Initial application generated by JHipster-5.8.2

.editorconfig

@@ -0,0 +1,24 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# editorconfig.org
+
+root = true
+
+[*]
+
+# Change these settings to your own preference
+indent_style = space
+indent_size = 4
+
+# We recommend you to keep these unchanged
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[package.json]
+indent_style = space
+indent_size = 2

.gitattributes

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+# This file is inspired by https://github.com/alexkaratarakis/gitattributes
+#
+# Auto detect text files and perform LF normalization
+# http://davidlaing.com/2012/09/19/customise-your-gitattributes-to-become-a-git-ninja/
+* text=auto
+
+# The above will handle all files NOT found below
+# These files are text and should be normalized (Convert crlf => lf)
+
+*.bat           text eol=crlf
+*.coffee        text
+*.css           text
+*.cql           text
+*.df            text
+*.ejs           text
+*.html          text
+*.java          text
+*.js            text
+*.json          text
+*.less          text
+*.properties    text
+*.sass          text
+*.scss          text
+*.sh            text eol=lf
+*.sql           text
+*.txt           text
+*.ts            text
+*.xml           text
+*.yaml          text
+*.yml           text
+
+# Documents
+*.doc           diff=astextplain
+*.DOC           diff=astextplain
+*.docx          diff=astextplain
+*.DOCX          diff=astextplain
+*.dot           diff=astextplain
+*.DOT           diff=astextplain
+*.pdf           diff=astextplain
+*.PDF           diff=astextplain
+*.rtf           diff=astextplain
+*.RTF           diff=astextplain
+*.markdown      text
+*.md            text
+*.adoc          text
+*.textile       text
+*.mustache      text
+*.csv           text
+*.tab           text
+*.tsv           text
+*.txt           text
+AUTHORS         text
+CHANGELOG       text
+CHANGES         text
+CONTRIBUTING    text
+COPYING         text
+copyright       text
+*COPYRIGHT*     text
+INSTALL         text
+license         text
+LICENSE         text
+NEWS            text
+readme          text
+*README*        text
+TODO            text
+
+# Graphics
+*.png           binary
+*.jpg           binary
+*.jpeg          binary
+*.gif           binary
+*.tif           binary
+*.tiff          binary
+*.ico           binary
+# SVG treated as an asset (binary) by default. If you want to treat it as text,
+# comment-out the following line and uncomment the line after.
+*.svg           binary
+#*.svg          text
+*.eps           binary
+
+# These files are binary and should be left untouched
+# (binary is a macro for -text -diff)
+*.class         binary
+*.jar           binary
+*.war           binary
+
+## LINTERS
+.csslintrc      text
+.eslintrc       text
+.jscsrc         text
+.jshintrc       text
+.jshintignore   text
+.stylelintrc    text
+
+## CONFIGS
+*.conf          text
+*.config        text
+.editorconfig   text
+.gitattributes  text
+.gitconfig      text
+.gitignore      text
+.htaccess       text
+*.npmignore     text
+
+## HEROKU
+Procfile        text
+.slugignore     text
+
+## AUDIO
+*.kar           binary
+*.m4a           binary
+*.mid           binary
+*.midi          binary
+*.mp3           binary
+*.ogg           binary
+*.ra            binary
+
+## VIDEO
+*.3gpp          binary
+*.3gp           binary
+*.as            binary
+*.asf           binary
+*.asx           binary
+*.fla           binary
+*.flv           binary
+*.m4v           binary
+*.mng           binary
+*.mov           binary
+*.mp4           binary
+*.mpeg          binary
+*.mpg           binary
+*.swc           binary
+*.swf           binary
+*.webm          binary
+
+## ARCHIVES
+*.7z            binary
+*.gz            binary
+*.rar           binary
+*.tar           binary
+*.zip           binary
+
+## FONTS
+*.ttf           binary
+*.eot           binary
+*.otf           binary
+*.woff          binary
+*.woff2         binary

.gitignore

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+######################
+# Project Specific
+######################
+/build/www/**
+/src/test/javascript/coverage/
+
+######################
+# Node
+######################
+/node/
+node_tmp/
+node_modules/
+npm-debug.log.*
+/.awcache/*
+/.cache-loader/*
+
+######################
+# SASS
+######################
+.sass-cache/
+
+######################
+# Eclipse
+######################
+*.pydevproject
+.project
+.metadata
+tmp/
+tmp/**/*
+*.tmp
+*.bak
+*.swp
+*~.nib
+local.properties
+.classpath
+.settings/
+.loadpath
+.factorypath
+/src/main/resources/rebel.xml
+
+# External tool builders
+.externalToolBuilders/**
+
+# Locally stored "Eclipse launch configurations"
+*.launch
+
+# CDT-specific
+.cproject
+
+# PDT-specific
+.buildpath
+
+######################
+# Intellij
+######################
+.idea/
+*.iml
+*.iws
+*.ipr
+*.ids
+*.orig
+classes/
+out/
+
+######################
+# Visual Studio Code
+######################
+.vscode/
+
+######################
+# Maven
+######################
+/log/
+/target/
+
+######################
+# Gradle
+######################
+.gradle/
+/build/
+
+######################
+# Package Files
+######################
+*.jar
+*.war
+*.ear
+*.db
+
+######################
+# Windows
+######################
+# Windows image file caches
+Thumbs.db
+
+# Folder config file
+Desktop.ini
+
+######################
+# Mac OSX
+######################
+.DS_Store
+.svn
+
+# Thumbnails
+._*
+
+# Files that might appear on external disk
+.Spotlight-V100
+.Trashes
+
+######################
+# Directories
+######################
+/bin/
+/deploy/
+
+######################
+# Logs
+######################
+*.log*
+
+######################
+# Others
+######################
+*.class
+*.*~
+*~
+.merge_file*
+
+######################
+# Gradle Wrapper
+######################
+!gradle/wrapper/gradle-wrapper.jar
+
+######################
+# Maven Wrapper
+######################
+!.mvn/wrapper/maven-wrapper.jar
+
+######################
+# ESLint
+######################
+.eslintcache

.huskyrc

@@ -0,0 +1,5 @@
+{
+  "hooks": {
+     "pre-commit": "lint-staged"
+  }
+}

.prettierignore

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+node_modules
+target
+package-lock.json

.prettierrc

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+# Prettier configuration
+
+printWidth: 140
+singleQuote: true
+tabWidth: 4
+useTabs: false
+
+# js and ts rules:
+arrowParens: avoid
+
+# jsx and tsx rules:
+jsxBracketSameLine: false

.yo-rc.json

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+{
+    "generator-jhipster": {
+        "promptValues": {
+            "packageName": "org.hostsharing.hsadminng",
+            "nativeLanguage": "de"
+        },
+        "jhipsterVersion": "5.8.2",
+        "applicationType": "monolith",
+        "baseName": "hsadminNg",
+        "packageName": "org.hostsharing.hsadminng",
+        "packageFolder": "org/hostsharing/hsadminng",
+        "serverPort": "8080",
+        "authenticationType": "jwt",
+        "cacheProvider": "ehcache",
+        "enableHibernateCache": false,
+        "websocket": false,
+        "databaseType": "sql",
+        "devDatabaseType": "h2Memory",
+        "prodDatabaseType": "postgresql",
+        "searchEngine": false,
+        "messageBroker": false,
+        "serviceDiscoveryType": false,
+        "buildTool": "gradle",
+        "enableSwaggerCodegen": true,
+        "jwtSecretKey": "ZDFlMDUzODIzMTUzZDEwZjExN2E5ZjAzY2VhZmYzNDE1YjhlYWUxZGRhMGU3ODZiNjRkNjVlNzEwZjExYWY4YzczM2NlYzI5YWE1OTRkNWM0YThlYjZjZjA5Zjc5YWJkOTgzYjdhZjQxZWQyZGUyYjFlYjI5ZDE3NmE4M2UzYjQ=",
+        "clientFramework": "angularX",
+        "useSass": false,
+        "clientPackageManager": "npm",
+        "testFrameworks": ["cucumber"],
+        "jhiPrefix": "jhi",
+        "entitySuffix": "",
+        "dtoSuffix": "DTO",
+        "otherModules": [],
+        "enableTranslation": true,
+        "nativeLanguage": "de",
+        "languages": ["de", "en"]
+    }
+}

README.md

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+# hsadminNg
+
+This application was generated using JHipster 5.8.2, you can find documentation and help at [https://www.jhipster.tech/documentation-archive/v5.8.2](https://www.jhipster.tech/documentation-archive/v5.8.2).
+
+## Development
+
+Before you can build this project, you must install and configure the following dependencies on your machine:
+
+1.  [Node.js][]: We use Node to run a development web server and build the project.
+    Depending on your system, you can install Node either from source or as a pre-packaged bundle.
+
+After installing Node, you should be able to run the following command to install development tools.
+You will only need to run this command when dependencies change in [package.json](package.json).
+
+    npm install
+
+We use npm scripts and [Webpack][] as our build system.
+
+Run the following commands in two separate terminals to create a blissful development experience where your browser
+auto-refreshes when files change on your hard drive.
+
+    ./gradlew
+    npm start
+
+Npm is also used to manage CSS and JavaScript dependencies used in this application. You can upgrade dependencies by
+specifying a newer version in [package.json](package.json). You can also run `npm update` and `npm install` to manage dependencies.
+Add the `help` flag on any command to see how you can use it. For example, `npm help update`.
+
+The `npm run` command will list all of the scripts available to run for this project.
+
+### Service workers
+
+Service workers are commented by default, to enable them please uncomment the following code.
+
+-   The service worker registering script in index.html
+
+```html
+<script>
+    if ('serviceWorker' in navigator) {
+        navigator.serviceWorker.register('./service-worker.js').then(function() {
+            console.log('Service Worker Registered');
+        });
+    }
+</script>
+```
+
+Note: workbox creates the respective service worker and dynamically generate the `service-worker.js`
+
+### Managing dependencies
+
+For example, to add [Leaflet][] library as a runtime dependency of your application, you would run following command:
+
+    npm install --save --save-exact leaflet
+
+To benefit from TypeScript type definitions from [DefinitelyTyped][] repository in development, you would run following command:
+
+    npm install --save-dev --save-exact @types/leaflet
+
+Then you would import the JS and CSS files specified in library's installation instructions so that [Webpack][] knows about them:
+Edit [src/main/webapp/app/vendor.ts](src/main/webapp/app/vendor.ts) file:
+
+```
+import 'leaflet/dist/leaflet.js';
+```
+
+Edit [src/main/webapp/content/css/vendor.css](src/main/webapp/content/css/vendor.css) file:
+
+```
+@import '~leaflet/dist/leaflet.css';
+```
+
+Note: there are still few other things remaining to do for Leaflet that we won't detail here.
+
+For further instructions on how to develop with JHipster, have a look at [Using JHipster in development][].
+
+### Using angular-cli
+
+You can also use [Angular CLI][] to generate some custom client code.
+
+For example, the following command:
+
+    ng generate component my-component
+
+will generate few files:
+
+    create src/main/webapp/app/my-component/my-component.component.html
+    create src/main/webapp/app/my-component/my-component.component.ts
+    update src/main/webapp/app/app.module.ts
+
+### Doing API-First development using openapi-generator
+
+[OpenAPI-Generator]() is configured for this application. You can generate API code from the `src/main/resources/swagger/api.yml` definition file by running:
+
+```bash
+./gradlew openApiGenerate
+```
+
+Then implements the generated delegate classes with `@Service` classes.
+
+To edit the `api.yml` definition file, you can use a tool such as [Swagger-Editor](). Start a local instance of the swagger-editor using docker by running: `docker-compose -f src/main/docker/swagger-editor.yml up -d`. The editor will then be reachable at [http://localhost:7742](http://localhost:7742).
+
+Refer to [Doing API-First development][] for more details.
+
+## Building for production
+
+To optimize the hsadminNg application for production, run:
+
+    ./gradlew -Pprod clean bootWar
+
+This will concatenate and minify the client CSS and JavaScript files. It will also modify `index.html` so it references these new files.
+To ensure everything worked, run:
+
+    java -jar build/libs/*.war
+
+Then navigate to [http://localhost:8080](http://localhost:8080) in your browser.
+
+Refer to [Using JHipster in production][] for more details.
+
+## Testing
+
+To launch your application's tests, run:
+
+    ./gradlew test
+
+### Client tests
+
+Unit tests are run by [Jest][] and written with [Jasmine][]. They're located in [src/test/javascript/](src/test/javascript/) and can be run with:
+
+    npm test
+
+For more information, refer to the [Running tests page][].
+
+### Code quality
+
+Sonar is used to analyse code quality. You can start a local Sonar server (accessible on http://localhost:9001) with:
+
+```
+docker-compose -f src/main/docker/sonar.yml up -d
+```
+
+Then, run a Sonar analysis:
+
+```
+./gradlew -Pprod clean test sonarqube
+```
+
+For more information, refer to the [Code quality page][].
+
+## Using Docker to simplify development (optional)
+
+You can use Docker to improve your JHipster development experience. A number of docker-compose configuration are available in the [src/main/docker](src/main/docker) folder to launch required third party services.
+
+For example, to start a postgresql database in a docker container, run:
+
+    docker-compose -f src/main/docker/postgresql.yml up -d
+
+To stop it and remove the container, run:
+
+    docker-compose -f src/main/docker/postgresql.yml down
+
+You can also fully dockerize your application and all the services that it depends on.
+To achieve this, first build a docker image of your app by running:
+
+    ./gradlew bootWar -Pprod jibDockerBuild
+
+Then run:
+
+    docker-compose -f src/main/docker/app.yml up -d
+
+For more information refer to [Using Docker and Docker-Compose][], this page also contains information on the docker-compose sub-generator (`jhipster docker-compose`), which is able to generate docker configurations for one or several JHipster applications.
+
+## Continuous Integration (optional)
+
+To configure CI for your project, run the ci-cd sub-generator (`jhipster ci-cd`), this will let you generate configuration files for a number of Continuous Integration systems. Consult the [Setting up Continuous Integration][] page for more information.
+
+[jhipster homepage and latest documentation]: https://www.jhipster.tech
+[jhipster 5.8.2 archive]: https://www.jhipster.tech/documentation-archive/v5.8.2
+[using jhipster in development]: https://www.jhipster.tech/documentation-archive/v5.8.2/development/
+[using docker and docker-compose]: https://www.jhipster.tech/documentation-archive/v5.8.2/docker-compose
+[using jhipster in production]: https://www.jhipster.tech/documentation-archive/v5.8.2/production/
+[running tests page]: https://www.jhipster.tech/documentation-archive/v5.8.2/running-tests/
+[code quality page]: https://www.jhipster.tech/documentation-archive/v5.8.2/code-quality/
+[setting up continuous integration]: https://www.jhipster.tech/documentation-archive/v5.8.2/setting-up-ci/
+[node.js]: https://nodejs.org/
+[yarn]: https://yarnpkg.org/
+[webpack]: https://webpack.github.io/
+[angular cli]: https://cli.angular.io/
+[browsersync]: http://www.browsersync.io/
+[jest]: https://facebook.github.io/jest/
+[jasmine]: http://jasmine.github.io/2.0/introduction.html
+[protractor]: https://angular.github.io/protractor/
+[leaflet]: http://leafletjs.com/
+[definitelytyped]: http://definitelytyped.org/
+[openapi-generator]: https://openapi-generator.tech
+[swagger-editor]: http://editor.swagger.io
+[doing api-first development]: https://www.jhipster.tech/documentation-archive/v5.8.2/doing-api-first-development/

angular.json

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+{
+    "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
+    "version": 1,
+    "newProjectRoot": "projects",
+    "projects": {
+        "hsadmin-ng": {
+            "root": "",
+            "sourceRoot": "src/main/webapp",
+            "projectType": "application",
+            "architect": {}
+        }
+    },
+    "defaultProject": "hsadmin-ng",
+    "cli": {
+        "packageManager": "npm"
+    },
+    "schematics": {
+        "@schematics/angular:component": {
+            "inlineStyle": true,
+            "inlineTemplate": false,
+            "spec": false,
+            "prefix": "jhi",
+            "styleExt": "css"
+        },
+        "@schematics/angular:directive": {
+            "spec": false,
+            "prefix": "jhi"
+        },
+        "@schematics/angular:guard": {
+            "spec": false
+        },
+        "@schematics/angular:pipe": {
+            "spec": false
+        },
+        "@schematics/angular:service": {
+            "spec": false
+        }
+    }
+}

build.gradle

@@ -0,0 +1,287 @@
+import org.gradle.internal.os.OperatingSystem
+
+buildscript {
+    repositories {
+        mavenLocal()
+        mavenCentral()
+        maven { url "http://repo.spring.io/plugins-release" }
+        maven { url "https://plugins.gradle.org/m2/" }
+    }
+    dependencies {
+        classpath "org.springframework.boot:spring-boot-gradle-plugin:${spring_boot_version}"
+        classpath "io.spring.gradle:propdeps-plugin:0.0.10.RELEASE"
+        classpath "org.openapitools:openapi-generator-gradle-plugin:3.3.0"
+        classpath "gradle.plugin.com.gorylenko.gradle-git-properties:gradle-git-properties:1.5.2"
+        //jhipster-needle-gradle-buildscript-dependency - JHipster will add additional gradle build script plugins here
+    }
+}
+
+plugins {
+    id "org.sonarqube" version "2.6.2"
+    id "net.ltgt.apt-eclipse" version "0.19"
+    id "net.ltgt.apt-idea" version "0.19"
+    id "net.ltgt.apt" version "0.19"
+    id "io.spring.dependency-management" version "1.0.6.RELEASE"
+    id "com.moowork.node" version "1.2.0"
+    id 'org.liquibase.gradle' version '2.0.1'
+    //jhipster-needle-gradle-plugins - JHipster will add additional gradle plugins here
+}
+
+apply plugin: 'java'
+sourceCompatibility=1.8
+targetCompatibility=1.8
+// Until JHipster supports JDK 9
+assert System.properties['java.specification.version'] == '1.8'
+
+apply plugin: 'maven'
+apply plugin: 'org.springframework.boot'
+apply plugin: 'war'
+apply plugin: 'propdeps'
+apply plugin: 'com.moowork.node'
+apply plugin: 'io.spring.dependency-management'
+apply plugin: 'idea'
+
+idea {
+  module {
+    excludeDirs += files('node_modules')
+  }
+}
+
+dependencyManagement {
+  imports {
+    mavenBom 'io.github.jhipster:jhipster-dependencies:' + jhipster_dependencies_version
+    //jhipster-needle-gradle-dependency-management - JHipster will add additional dependencies management here
+  }
+}
+
+defaultTasks 'bootRun'
+
+group = 'org.hostsharing.hsadminng'
+version = '0.0.1-SNAPSHOT'
+
+description = ''
+
+bootWar {
+    mainClassName = 'org.hostsharing.hsadminng.HsadminNgApp'
+}
+
+war {
+    webAppDirName = 'build/www/'
+    enabled = true
+    extension = 'war.original'
+}
+
+springBoot {
+    mainClassName = 'org.hostsharing.hsadminng.HsadminNgApp'
+}
+
+if (OperatingSystem.current().isWindows()) {
+    // https://stackoverflow.com/questions/40037487/the-filename-or-extension-is-too-long-error-using-gradle
+    task classpathJar(type: Jar) {
+        dependsOn configurations.runtime
+        appendix = 'classpath'
+
+        doFirst {
+            manifest {
+                attributes 'Class-Path': configurations.runtime.files.collect {
+                    it.toURI().toURL().toString().replaceFirst(/file:\/+/, '/').replaceAll(' ', '%20')
+                }.join(' ')
+            }
+        }
+    }
+
+    bootRun {
+        dependsOn classpathJar
+        doFirst {
+            classpath = files("$buildDir/classes/java/main", "$buildDir/resources/main", classpathJar.archivePath)
+        }
+    }
+}
+
+test {
+    exclude '**/CucumberTest*'
+
+    // uncomment if the tests reports are not generated
+    // see https://github.com/jhipster/generator-jhipster/pull/2771 and https://github.com/jhipster/generator-jhipster/pull/4484
+    // ignoreFailures true
+    reports.html.enabled = false
+}
+
+task cucumberTest(type: Test) {
+    description = "Execute cucumber BDD tests."
+    group = "verification"
+    include '**/CucumberTest*'
+
+    // uncomment if the tests reports are not generated
+    // see https://github.com/jhipster/generator-jhipster/pull/2771 and https://github.com/jhipster/generator-jhipster/pull/4484
+    // ignoreFailures true
+    reports.html.enabled = false
+}
+
+check.dependsOn cucumberTest
+task testReport(type: TestReport) {
+    destinationDir = file("$buildDir/reports/tests")
+    reportOn test
+}
+
+task cucumberTestReport(type: TestReport) {
+    destinationDir = file("$buildDir/reports/tests")
+    reportOn cucumberTest
+}
+
+apply from: 'gradle/docker.gradle'
+apply from: 'gradle/sonar.gradle'
+apply from: 'gradle/swagger.gradle'
+//jhipster-needle-gradle-apply-from - JHipster will add additional gradle scripts to be applied here
+
+if (project.hasProperty('prod')) {
+    apply from: 'gradle/profile_prod.gradle'
+} else {
+    apply from: 'gradle/profile_dev.gradle'
+}
+
+
+if (!project.hasProperty('runList')) {
+    project.ext.runList = 'main'
+}
+
+project.ext.diffChangelogFile = 'src/main/resources/config/liquibase/changelog/' + new Date().format('yyyyMMddHHmmss') + '_changelog.xml'
+
+liquibase {
+    activities {
+        main {
+            driver ''
+            url ''
+            username 'hsadminNg'
+            password ''
+            changeLogFile 'src/main/resources/config/liquibase/master.xml'
+            defaultSchemaName ''
+            logLevel 'debug'
+            classpath 'src/main/resources/'
+        }
+        diffLog {
+            driver ''
+            url ''
+            username 'hsadminNg'
+            password ''
+            changeLogFile project.ext.diffChangelogFile
+            referenceUrl 'hibernate:spring:org.hostsharing.hsadminng.domain?dialect=&hibernate.physical_naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy&hibernate.implicit_naming_strategy=org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy'
+            defaultSchemaName ''
+            logLevel 'debug'
+            classpath "$buildDir/classes/java/main"
+        }
+    }
+
+    runList = project.ext.runList
+}
+
+configurations {
+    providedRuntime
+    compile.exclude module: "spring-boot-starter-tomcat"
+}
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+    jcenter()
+    //jhipster-needle-gradle-repositories - JHipster will add additional repositories
+}
+
+dependencies {
+    // Use ", version: jhipster_dependencies_version, changing: true" if you want
+    // to use a SNAPSHOT release instead of a stable release
+    compile group: "io.github.jhipster", name: "jhipster-framework"
+    compile "org.springframework.boot:spring-boot-starter-cache"
+    compile "io.dropwizard.metrics:metrics-core"
+    compile 'io.micrometer:micrometer-registry-prometheus'
+    compile "net.logstash.logback:logstash-logback-encoder"
+    compile "com.fasterxml.jackson.datatype:jackson-datatype-hppc"
+    compile "com.fasterxml.jackson.datatype:jackson-datatype-jsr310"
+    compile "com.fasterxml.jackson.datatype:jackson-datatype-hibernate5"
+    compile "com.fasterxml.jackson.core:jackson-annotations"
+    compile "com.fasterxml.jackson.core:jackson-databind"
+    compile "com.fasterxml.jackson.module:jackson-module-afterburner"
+    compile "javax.cache:cache-api"
+    compile "org.hibernate:hibernate-core"
+    compile "com.zaxxer:HikariCP"
+    compile "org.apache.commons:commons-lang3"
+    compile "commons-io:commons-io"
+    compile "javax.transaction:javax.transaction-api"
+    compile "org.ehcache:ehcache"
+    compile "org.hibernate:hibernate-entitymanager"
+    compile "org.hibernate:hibernate-envers"
+    compile "org.hibernate.validator:hibernate-validator"
+    compile "org.liquibase:liquibase-core"
+    compile "com.mattbertolini:liquibase-slf4j"
+    liquibaseRuntime "org.liquibase:liquibase-core"
+    liquibaseRuntime "org.liquibase.ext:liquibase-hibernate5:${liquibase_hibernate5_version}"
+    liquibaseRuntime sourceSets.main.compileClasspath
+    compile "org.springframework.boot:spring-boot-loader-tools"
+    compile "org.springframework.boot:spring-boot-starter-mail"
+    compile "org.springframework.boot:spring-boot-starter-logging"
+    compile "org.springframework.boot:spring-boot-starter-actuator"
+    compile "org.springframework.boot:spring-boot-starter-aop"
+    compile "org.springframework.boot:spring-boot-starter-data-jpa"
+    compile "org.springframework.boot:spring-boot-starter-security"
+    compile ("org.springframework.boot:spring-boot-starter-web") {
+        exclude module: 'spring-boot-starter-tomcat'
+    }
+    compile "org.springframework.boot:spring-boot-starter-undertow"
+    compile "org.springframework.boot:spring-boot-starter-thymeleaf"
+    compile "org.zalando:problem-spring-web:0.24.0-RC.0"
+    compile "org.springframework.boot:spring-boot-starter-cloud-connectors"
+    compile "org.springframework.security:spring-security-config"
+    compile "org.springframework.security:spring-security-data"
+    compile "org.springframework.security:spring-security-web"
+    compile "io.jsonwebtoken:jjwt-api"
+    runtime "io.jsonwebtoken:jjwt-impl"
+    runtime "io.jsonwebtoken:jjwt-jackson"
+    compile ("io.springfox:springfox-swagger2") {
+        exclude module: 'mapstruct'
+    }
+    compile "io.springfox:springfox-bean-validators"
+    compile "org.postgresql:postgresql"
+    liquibaseRuntime "org.postgresql:postgresql"
+    compile "org.mapstruct:mapstruct-jdk8:${mapstruct_version}"
+    annotationProcessor "org.mapstruct:mapstruct-processor:${mapstruct_version}"
+    annotationProcessor "org.hibernate:hibernate-jpamodelgen"
+    annotationProcessor ("org.springframework.boot:spring-boot-configuration-processor") {
+        exclude group: 'com.vaadin.external.google', module: 'android-json'
+    }
+    testCompile "com.jayway.jsonpath:json-path"
+    testCompile "io.cucumber:cucumber-junit"
+    testCompile "io.cucumber:cucumber-spring"
+    testCompile ("org.springframework.boot:spring-boot-starter-test") {
+        exclude group: 'com.vaadin.external.google', module: 'android-json'
+    }
+    testCompile "org.springframework.security:spring-security-test"
+    testCompile "org.springframework.boot:spring-boot-test"
+    testCompile "org.assertj:assertj-core"
+    testCompile "junit:junit"
+    testCompile "org.mockito:mockito-core"
+    testCompile "com.mattbertolini:liquibase-slf4j"
+    testCompile "org.hamcrest:hamcrest-library"
+    testCompile "com.h2database:h2"
+    liquibaseRuntime "com.h2database:h2"
+    //jhipster-needle-gradle-dependency - JHipster will add additional dependencies here
+}
+
+task cleanResources(type: Delete) {
+    delete 'build/resources'
+}
+
+wrapper {
+    gradleVersion = '4.10.2'
+}
+
+task stage(dependsOn: 'bootWar') {
+}
+
+if (project.hasProperty('nodeInstall')) {
+    node {
+        version = "${node_version}"
+        npmVersion = "${npm_version}"
+        yarnVersion = "${yarn_version}"
+        download = true
+    }
+}

gradle.properties

@@ -0,0 +1,53 @@
+rootProject.name=hsadmin-ng
+profile=dev
+
+# Build properties
+node_version=10.15.0
+npm_version=6.4.1
+yarn_version=1.13.0
+
+# Dependency versions
+jhipster_dependencies_version=2.1.1
+# The spring-boot version should match the one managed by
+# https://mvnrepository.com/artifact/io.github.jhipster/jhipster-dependencies/${jhipster_dependencies_version}
+spring_boot_version=2.0.8.RELEASE
+# The hibernate version should match the one managed by
+# https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-dependencies/${spring-boot.version} -->
+hibernate_version=5.2.17.Final
+mapstruct_version=1.2.0.Final
+
+liquibase_hibernate5_version=3.6
+liquibaseTaskPrefix=liquibase
+
+# jhipster-needle-gradle-property - JHipster will add additional properties here
+
+## below are some of the gradle performance improvement settings that can be used as required, these are not enabled by default
+
+## The Gradle daemon aims to improve the startup and execution time of Gradle.
+## The daemon is enabled by default in Gradle 3+ setting this to false will disable this.
+## TODO: disable daemon on CI, since builds should be clean and reliable on servers
+## https://docs.gradle.org/current/userguide/gradle_daemon.html#sec:ways_to_disable_gradle_daemon
+## un comment the below line to disable the daemon
+
+#org.gradle.daemon=false
+
+## Specifies the JVM arguments used for the daemon process.
+## The setting is particularly useful for tweaking memory settings.
+## Default value: -Xmx1024m -XX:MaxPermSize=256m
+## un comment the below line to override the daemon defaults
+
+#org.gradle.jvmargs=-Xmx1024m -XX:MaxPermSize=256m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
+
+## When configured, Gradle will run in incubating parallel mode.
+## This option should only be used with decoupled projects. More details, visit
+## http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+## un comment the below line to enable parallel mode
+
+#org.gradle.parallel=true
+
+## Enables new incubating mode that makes Gradle selective when configuring projects.
+## Only relevant projects are configured which results in faster builds for large multi-projects.
+## http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:configuration_on_demand
+## un comment the below line to enable the selective mode
+
+#org.gradle.configureondemand=true

gradle/docker.gradle

@@ -0,0 +1,35 @@
+buildscript {
+    repositories {
+        gradlePluginPortal()
+    }
+    dependencies {
+        classpath "gradle.plugin.com.google.cloud.tools:jib-gradle-plugin:0.9.11"
+    }
+}
+
+apply plugin: com.google.cloud.tools.jib.gradle.JibPlugin
+
+jib {
+    from {
+        image = 'openjdk:8-jre-alpine'
+    }
+    to {
+        image = 'hsadminng:latest'
+    }
+    container {
+        entrypoint = ['sh', '-c', 'chmod +x /entrypoint.sh && sync && /entrypoint.sh']
+        ports = ['8080']
+        environment = [
+            SPRING_OUTPUT_ANSI_ENABLED: 'ALWAYS',
+            JHIPSTER_SLEEP: '0'
+        ]
+        useCurrentTimestamp = true
+    }
+}
+
+task copyWwwIntoStatic (type: Copy) {
+    from 'build/www/'
+    into 'build/resources/main/static'
+}
+
+jibDockerBuild.dependsOn copyWwwIntoStatic

gradle/profile_dev.gradle

@@ -0,0 +1,63 @@
+import org.gradle.internal.os.OperatingSystem
+
+apply plugin: 'org.springframework.boot'
+apply plugin: 'com.moowork.node'
+
+dependencies {
+    compile "org.springframework.boot:spring-boot-devtools"
+    compile "com.h2database:h2"
+}
+
+def profiles = 'dev'
+if (project.hasProperty('no-liquibase')) {
+    profiles += ',no-liquibase'
+}
+if (project.hasProperty('tls')) {
+    profiles += ',tls'
+}
+
+springBoot {
+    buildInfo {
+		properties {
+			time = null
+		}
+	}
+}
+
+bootRun {
+    args = []
+}
+
+task webpackBuildDev(type: NpmTask) {
+    inputs.files(fileTree('src/main/webapp/'))
+
+    def webpackDevFiles = fileTree('webpack//')
+    webpackDevFiles.exclude('webpack.prod.js')
+    inputs.files(webpackDevFiles)
+
+    outputs.files(fileTree("build/www/"))
+
+    dependsOn npmInstall
+
+    args = ["run", "webpack:build"]
+}
+
+task copyIntoStatic (type: Copy) {
+    from 'build/www/'
+    into 'build/resources/main/static'
+}
+
+processResources {
+    filesMatching('**/application.yml') {
+        filter {
+            it.replace('#project.version#', version)
+        }
+        filter {
+            it.replace('#spring.profiles.active#', profiles)
+        }
+    }
+}
+
+processResources.dependsOn webpackBuildDev
+copyIntoStatic.dependsOn processResources
+bootJar.dependsOn copyIntoStatic

gradle/profile_prod.gradle

@@ -0,0 +1,63 @@
+apply plugin: 'org.springframework.boot'
+apply plugin: 'com.gorylenko.gradle-git-properties'
+apply plugin: 'com.moowork.node'
+
+dependencies {
+    testCompile "com.h2database:h2"
+}
+
+def profiles = 'prod'
+if (project.hasProperty('no-liquibase')) {
+    profiles += ',no-liquibase'
+}
+
+if (project.hasProperty('swagger')) {
+    profiles += ',swagger'
+}
+
+springBoot {
+    buildInfo()
+}
+
+bootRun {
+    args = []
+}
+
+task webpack_test(type: NpmTask, dependsOn: 'npm_install') {
+    args = ["run", "webpack:test"]
+}
+
+task webpack(type: NpmTask, dependsOn: 'npm_install') {
+    args = ["run", "webpack:prod"]
+}
+
+task copyIntoStatic (type: Copy) {
+    from 'build/www/'
+    into 'build/resources/main/static'
+}
+
+processResources {
+    filesMatching('**/application.yml') {
+        filter {
+            it.replace('#project.version#', version)
+        }
+        filter {
+            it.replace('#spring.profiles.active#', profiles)
+        }
+    }
+}
+
+generateGitProperties {
+    onlyIf {
+        !source.isEmpty()
+    }
+}
+
+gitProperties {
+    keys = ['git.branch', 'git.commit.id.abbrev', 'git.commit.id.describe']
+}
+
+test.dependsOn webpack_test
+processResources.dependsOn webpack
+copyIntoStatic.dependsOn processResources
+bootJar.dependsOn copyIntoStatic

gradle/sonar.gradle

@@ -0,0 +1,47 @@
+apply plugin: "org.sonarqube"
+apply plugin: 'jacoco'
+
+jacoco {
+    toolVersion = '0.8.2'
+}
+
+jacocoTestReport {
+    reports {
+        xml.enabled true
+    }
+}
+
+sonarqube {
+    properties {
+        property "sonar.host.url", "http://localhost:9001"
+        property "sonar.exclusions", "src/main/webapp/content/**/*.*,src/main/webapp/i18n/*.js, build/www/**/*.*"
+
+        property "sonar.issue.ignore.multicriteria", "S3437,S4502,S4684,UndocumentedApi,BoldAndItalicTagsCheck"
+
+        // Rule https://sonarcloud.io/coding_rules?open=Web%3ABoldAndItalicTagsCheck&rule_key=Web%3ABoldAndItalicTagsCheck is ignored. Even if we agree that using the "i" tag is an awful practice, this is what is recommended by http://fontawesome.io/examples/
+        property "sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.resourceKey", ">src/main/webapp/app/**/*.*"
+        property "sonar.issue.ignore.multicriteria.BoldAndItalicTagsCheck.ruleKey", "Web:BoldAndItalicTagsCheck"
+
+        // Rule https://sonarcloud.io/coding_rules?open=squid%3AS3437&rule_key=squid%3AS3437 is ignored, as a JPA-managed field cannot be transient
+        property "sonar.issue.ignore.multicriteria.S3437.resourceKey", "src/main/java/**/*"
+        property "sonar.issue.ignore.multicriteria.S3437.ruleKey", "squid:S3437"
+
+        // Rule https://sonarcloud.io/coding_rules?open=squid%3AUndocumentedApi&rule_key=squid%3AUndocumentedApi is ignored, as we want to follow "clean code" guidelines and classes, methods and arguments names should be self-explanatory
+        property "sonar.issue.ignore.multicriteria.UndocumentedApi.resourceKey", "src/main/java/**/*"
+        property "sonar.issue.ignore.multicriteria.UndocumentedApi.ruleKey", "squid:UndocumentedApi"
+        // Rule https://sonarcloud.io/coding_rules?open=squid%3AS4502&rule_key=squid%3AS4502 is ignored, as for JWT tokens we are not subject to CSRF attack
+        property "sonar.issue.ignore.multicriteria.S4502.resourceKey", "src/main/java/**/*"
+        property "sonar.issue.ignore.multicriteria.S4502.ruleKey", "squid:S4502"
+
+        // Rule https://sonarcloud.io/coding_rules?open=squid%3AS4684&rule_key=squid%3AS4684
+        property "sonar.issue.ignore.multicriteria.S4684.resourceKey", "src/main/java/**/*"
+        property "sonar.issue.ignore.multicriteria.S4684.ruleKey", "squid:S4684"
+
+        property "sonar.jacoco.reportPaths", "${project.buildDir}/jacoco/test.exec"
+        property "sonar.java.codeCoveragePlugin", "jacoco"
+        property "sonar.typescript.lcov.reportPaths", "${project.buildDir}/test-results/lcov.info"
+        property "sonar.junit.reportPaths", "${project.buildDir}/test-results"
+        property "sonar.sources", "${project.projectDir}/src/main/"
+        property "sonar.tests", "${project.projectDir}/src/test/"
+    }
+}

gradle/swagger.gradle

@@ -0,0 +1,28 @@
+/*
+ * Plugin that provides API-first development using OpenAPI-generator to
+ * generate Spring-MVC endpoint stubs at compile time from an OpenAPI definition file
+ */
+apply plugin: 'org.openapi.generator'
+
+openApiGenerate {
+    generatorName = "spring"
+    inputSpec = "$rootDir/src/main/resources/swagger/api.yml".toString()
+    outputDir = "$buildDir/openapi".toString()
+    apiPackage = "org.hostsharing.hsadminng.web.api"
+    modelPackage = "org.hostsharing.hsadminng.web.api.model"
+    apiFilesConstrainedTo = [""]
+    modelFilesConstrainedTo = [""]
+    supportingFilesConstrainedTo = ["ApiUtil.java"]
+    configOptions = [delegatePattern: "true"]
+    validateSpec = true
+}
+
+sourceSets {
+    main {
+        java {
+            srcDir file("${project.buildDir.path}/openapi/src/main/java")
+        }
+    }
+}
+
+compileJava.dependsOn("openApiGenerate")

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradle/zipkin.gradle

@@ -0,0 +1,3 @@
+dependencies {
+    compile "org.springframework.cloud:spring-cloud-starter-zipkin"
+}

gradlew

@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

package.json

@@ -0,0 +1,126 @@
+{
+    "name": "hsadmin-ng",
+    "version": "0.0.0",
+    "description": "Description for hsadminNg",
+    "private": true,
+    "license": "UNLICENSED",
+    "cacheDirectories": [
+        "node_modules"
+    ],
+    "dependencies": {
+        "@angular/common": "7.2.4",
+        "@angular/compiler": "7.2.4",
+        "@angular/core": "7.2.4",
+        "@angular/forms": "7.2.4",
+        "@angular/platform-browser": "7.2.4",
+        "@angular/platform-browser-dynamic": "7.2.4",
+        "@angular/router": "7.2.4",
+        "@fortawesome/angular-fontawesome": "0.3.0",
+        "@fortawesome/fontawesome-svg-core": "1.2.14",
+        "@fortawesome/free-solid-svg-icons": "5.7.1",
+        "@ng-bootstrap/ng-bootstrap": "4.0.2",
+        "@ngx-translate/core": "11.0.1",
+        "@ngx-translate/http-loader": "4.0.0",
+        "bootstrap": "4.2.1",
+        "core-js": "2.6.4",
+        "moment": "2.24.0",
+        "ng-jhipster": "0.9.1",
+        "ngx-cookie": "2.0.1",
+        "ngx-infinite-scroll": "7.0.1",
+        "ngx-webstorage": "2.0.1",
+        "rxjs": "6.4.0",
+        "swagger-ui": "2.2.10",
+        "tslib": "1.9.3",
+        "zone.js": "0.8.29"
+    },
+    "devDependencies": {
+        "@angular/cli": "7.3.1",
+        "@angular/compiler-cli": "7.2.4",
+        "@ngtools/webpack": "7.3.1",
+        "@types/jest": "24.0.0",
+        "@types/node": "10.12.24",
+        "angular-router-loader": "0.8.5",
+        "angular2-template-loader": "0.6.2",
+        "autoprefixer": "9.4.7",
+        "browser-sync": "2.26.3",
+        "browser-sync-webpack-plugin": "2.2.2",
+        "cache-loader": "2.0.1",
+        "codelyzer": "4.5.0",
+        "copy-webpack-plugin": "4.6.0",
+        "css-loader": "2.1.0",
+        "file-loader": "3.0.1",
+        "fork-ts-checker-webpack-plugin": "0.5.2",
+        "friendly-errors-webpack-plugin": "1.7.0",
+        "generator-jhipster": "5.8.2",
+        "html-loader": "0.5.5",
+        "html-webpack-plugin": "3.2.0",
+        "husky": "1.3.1",
+        "jest": "24.1.0",
+        "jest-junit": "6.2.1",
+        "jest-preset-angular": "6.0.2",
+        "jest-sonar-reporter": "2.0.0",
+        "lint-staged": "8.1.3",
+        "merge-jsons-webpack-plugin": "1.0.18",
+        "mini-css-extract-plugin": "0.5.0",
+        "moment-locales-webpack-plugin": "1.0.7",
+        "optimize-css-assets-webpack-plugin": "5.0.1",
+        "prettier": "1.16.4",
+        "reflect-metadata": "0.1.13",
+        "rimraf": "2.6.3",
+        "simple-progress-webpack-plugin": "1.1.2",
+        "style-loader": "0.23.1",
+        "terser-webpack-plugin": "1.2.2",
+        "thread-loader": "2.1.2",
+        "to-string-loader": "1.1.5",
+        "ts-loader": "5.3.3",
+        "tslint": "5.12.1",
+        "tslint-config-prettier": "1.18.0",
+        "tslint-loader": "3.6.0",
+        "typescript": "3.2.4",
+        "postcss-loader": "3.0.0",
+        "webpack": "4.29.3",
+        "webpack-cli": "3.2.3",
+        "webpack-dev-server": "3.1.14",
+        "webpack-merge": "4.2.1",
+        "webpack-notifier": "1.7.0",
+        "webpack-visualizer-plugin": "0.1.11",
+        "workbox-webpack-plugin": "3.6.3",
+        "write-file-webpack-plugin": "4.5.0"
+    },
+    "engines": {
+        "node": ">=8.9.0"
+    },
+    "lint-staged": {
+        "{,src/**/}*.{md,json,ts,css,scss}": [
+            "prettier --write",
+            "git add"
+        ]
+    },
+    "scripts": {
+        "prettier:format": "prettier --write \"{,src/**/}*.{md,json,ts,css,scss}\"",
+        "lint": "tslint --project tsconfig.json -e 'node_modules/**'",
+        "lint:fix": "npm run lint -- --fix",
+        "ngc": "ngc -p tsconfig-aot.json",
+        "cleanup": "rimraf build/{aot,www}",
+        "clean-www": "rimraf build//www/app/{src,build/}",
+        "start": "npm run webpack:dev",
+        "start-tls": "npm run webpack:dev -- --env.tls",
+        "serve": "npm run start",
+        "build": "npm run webpack:prod",
+        "test": "npm run lint && jest --coverage --logHeapUsage -w=2 --config src/test/javascript/jest.conf.js",
+        "test:watch": "npm run test -- --watch",
+        "webpack:dev": "npm run webpack-dev-server -- --config webpack/webpack.dev.js --inline --hot --port=9060 --watch-content-base --env.stats=minimal",
+        "webpack:dev-verbose": "npm run webpack-dev-server -- --config webpack/webpack.dev.js --inline --hot --port=9060 --watch-content-base --profile --progress --env.stats=normal",
+        "webpack:build:main": "npm run webpack -- --config webpack/webpack.dev.js --env.stats=minimal",
+        "webpack:build": "npm run cleanup && npm run webpack:build:main",
+        "webpack:prod:main": "npm run webpack -- --config webpack/webpack.prod.js --profile",
+        "webpack:prod": "npm run cleanup && npm run webpack:prod:main && npm run clean-www",
+        "webpack:test": "npm run test",
+        "webpack-dev-server": "node --max_old_space_size=4096 node_modules/webpack-dev-server/bin/webpack-dev-server.js",
+        "webpack": "node --max_old_space_size=4096 node_modules/webpack/bin/webpack.js"
+    },
+    "jestSonar": {
+        "reportPath": "build/test-results/jest",
+        "reportFile": "TESTS-results-sonar.xml"
+    }
+}

postcss.config.js

@@ -0,0 +1,5 @@
+module.exports = {
+    plugins: [
+        require('autoprefixer')
+    ]
+}

proxy.conf.json

@@ -0,0 +1,7 @@
+{
+    "*": {
+        "target": "http://localhost:8080",
+        "secure": false,
+        "loglevel": "debug"
+    }
+}

settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'hsadmin-ng'

src/main/docker/.dockerignore

@@ -0,0 +1,14 @@
+# https://docs.docker.com/engine/reference/builder/#dockerignore-file
+classes/
+generated-sources/
+generated-test-sources/
+h2db/
+maven-archiver/
+maven-status/
+reports/
+surefire-reports/
+test-classes/
+test-results/
+www/
+!*.jar
+!*.war

src/main/docker/Dockerfile

@@ -0,0 +1,20 @@
+FROM openjdk:8-jre-alpine
+
+ENV SPRING_OUTPUT_ANSI_ENABLED=ALWAYS \
+    JHIPSTER_SLEEP=0 \
+    JAVA_OPTS=""
+
+# Add a jhipster user to run our application so that it doesn't need to run as root
+RUN adduser -D -s /bin/sh jhipster
+WORKDIR /home/jhipster
+
+ADD entrypoint.sh entrypoint.sh
+RUN chmod 755 entrypoint.sh && chown jhipster:jhipster entrypoint.sh
+USER jhipster
+
+ENTRYPOINT ["./entrypoint.sh"]
+
+EXPOSE 8080
+
+ADD *.war app.war
+

src/main/docker/app.yml

@@ -0,0 +1,15 @@
+version: '2'
+services:
+    hsadminng-app:
+        image: hsadminng
+        environment:
+            - _JAVA_OPTIONS=-Xmx512m -Xms256m
+            - SPRING_PROFILES_ACTIVE=prod,swagger
+            - SPRING_DATASOURCE_URL=jdbc:postgresql://hsadminng-postgresql:5432/hsadminNg
+            - JHIPSTER_SLEEP=10 # gives time for the database to boot before the application
+        ports:
+            - 8080:8080
+    hsadminng-postgresql:
+        extends:
+            file: postgresql.yml
+            service: hsadminng-postgresql

src/main/docker/entrypoint.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+echo "The application will start in ${JHIPSTER_SLEEP}s..." && sleep ${JHIPSTER_SLEEP}
+exec java ${JAVA_OPTS} -Djava.security.egd=file:/dev/./urandom -jar "${HOME}/app.war" "$@"

src/main/docker/postgresql.yml

@@ -0,0 +1,11 @@
+version: '2'
+services:
+    hsadminng-postgresql:
+        image: postgres:10.4
+        # volumes:
+        #     - ~/volumes/jhipster/hsadminNg/postgresql/:/var/lib/postgresql/data/
+        environment:
+            - POSTGRES_USER=hsadminNg
+            - POSTGRES_PASSWORD=
+        ports:
+            - 5432:5432

src/main/docker/sonar.yml

@@ -0,0 +1,7 @@
+version: '2'
+services:
+    hsadminng-sonar:
+        image: sonarqube:7.1
+        ports:
+            - 9001:9000
+            - 9092:9092

src/main/docker/swagger-editor.yml

@@ -0,0 +1,6 @@
+version: '2'
+services:
+    swagger-editor:
+        image: swaggerapi/swagger-editor:latest
+        ports:
+            - 7742:8080

src/main/java/org/hostsharing/hsadminng/ApplicationWebXml.java

@@ -0,0 +1,21 @@
+package org.hostsharing.hsadminng;
+
+import org.hostsharing.hsadminng.config.DefaultProfileUtil;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
+
+/**
+ * This is a helper Java class that provides an alternative to creating a web.xml.
+ * This will be invoked only when the application is deployed to a Servlet container like Tomcat, JBoss etc.
+ */
+public class ApplicationWebXml extends SpringBootServletInitializer {
+
+    @Override
+    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
+        /**
+         * set a default to use when no profile is configured.
+         */
+        DefaultProfileUtil.addDefaultProfile(application.application());
+        return application.sources(HsadminNgApp.class);
+    }
+}

src/main/java/org/hostsharing/hsadminng/HsadminNgApp.java

@@ -0,0 +1,98 @@
+package org.hostsharing.hsadminng;
+
+import org.hostsharing.hsadminng.config.ApplicationProperties;
+import org.hostsharing.hsadminng.config.DefaultProfileUtil;
+
+import io.github.jhipster.config.JHipsterConstants;
+
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.liquibase.LiquibaseProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.core.env.Environment;
+
+import javax.annotation.PostConstruct;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.Arrays;
+import java.util.Collection;
+
+@SpringBootApplication
+@EnableConfigurationProperties({LiquibaseProperties.class, ApplicationProperties.class})
+public class HsadminNgApp {
+
+    private static final Logger log = LoggerFactory.getLogger(HsadminNgApp.class);
+
+    private final Environment env;
+
+    public HsadminNgApp(Environment env) {
+        this.env = env;
+    }
+
+    /**
+     * Initializes hsadminNg.
+     * <p>
+     * Spring profiles can be configured with a program argument --spring.profiles.active=your-active-profile
+     * <p>
+     * You can find more information on how profiles work with JHipster on <a href="https://www.jhipster.tech/profiles/">https://www.jhipster.tech/profiles/</a>.
+     */
+    @PostConstruct
+    public void initApplication() {
+        Collection<String> activeProfiles = Arrays.asList(env.getActiveProfiles());
+        if (activeProfiles.contains(JHipsterConstants.SPRING_PROFILE_DEVELOPMENT) && activeProfiles.contains(JHipsterConstants.SPRING_PROFILE_PRODUCTION)) {
+            log.error("You have misconfigured your application! It should not run " +
+                "with both the 'dev' and 'prod' profiles at the same time.");
+        }
+        if (activeProfiles.contains(JHipsterConstants.SPRING_PROFILE_DEVELOPMENT) && activeProfiles.contains(JHipsterConstants.SPRING_PROFILE_CLOUD)) {
+            log.error("You have misconfigured your application! It should not " +
+                "run with both the 'dev' and 'cloud' profiles at the same time.");
+        }
+    }
+
+    /**
+     * Main method, used to run the application.
+     *
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        SpringApplication app = new SpringApplication(HsadminNgApp.class);
+        DefaultProfileUtil.addDefaultProfile(app);
+        Environment env = app.run(args).getEnvironment();
+        logApplicationStartup(env);
+    }
+
+    private static void logApplicationStartup(Environment env) {
+        String protocol = "http";
+        if (env.getProperty("server.ssl.key-store") != null) {
+            protocol = "https";
+        }
+        String serverPort = env.getProperty("server.port");
+        String contextPath = env.getProperty("server.servlet.context-path");
+        if (StringUtils.isBlank(contextPath)) {
+            contextPath = "/";
+        }
+        String hostAddress = "localhost";
+        try {
+            hostAddress = InetAddress.getLocalHost().getHostAddress();
+        } catch (UnknownHostException e) {
+            log.warn("The host name could not be determined, using `localhost` as fallback");
+        }
+        log.info("\n----------------------------------------------------------\n\t" +
+                "Application '{}' is running! Access URLs:\n\t" +
+                "Local: \t\t{}://localhost:{}{}\n\t" +
+                "External: \t{}://{}:{}{}\n\t" +
+                "Profile(s): \t{}\n----------------------------------------------------------",
+            env.getProperty("spring.application.name"),
+            protocol,
+            serverPort,
+            contextPath,
+            protocol,
+            hostAddress,
+            serverPort,
+            contextPath,
+            env.getActiveProfiles());
+    }
+}

src/main/java/org/hostsharing/hsadminng/aop/logging/LoggingAspect.java

@@ -0,0 +1,98 @@
+package org.hostsharing.hsadminng.aop.logging;
+
+import io.github.jhipster.config.JHipsterConstants;
+
+import org.aspectj.lang.JoinPoint;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.AfterThrowing;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Pointcut;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.core.env.Environment;
+
+import java.util.Arrays;
+
+/**
+ * Aspect for logging execution of service and repository Spring components.
+ *
+ * By default, it only runs with the "dev" profile.
+ */
+@Aspect
+public class LoggingAspect {
+
+    private final Logger log = LoggerFactory.getLogger(this.getClass());
+
+    private final Environment env;
+
+    public LoggingAspect(Environment env) {
+        this.env = env;
+    }
+
+    /**
+     * Pointcut that matches all repositories, services and Web REST endpoints.
+     */
+    @Pointcut("within(@org.springframework.stereotype.Repository *)" +
+        " || within(@org.springframework.stereotype.Service *)" +
+        " || within(@org.springframework.web.bind.annotation.RestController *)")
+    public void springBeanPointcut() {
+        // Method is empty as this is just a Pointcut, the implementations are in the advices.
+    }
+
+    /**
+     * Pointcut that matches all Spring beans in the application's main packages.
+     */
+    @Pointcut("within(org.hostsharing.hsadminng.repository..*)"+
+        " || within(org.hostsharing.hsadminng.service..*)"+
+        " || within(org.hostsharing.hsadminng.web.rest..*)")
+    public void applicationPackagePointcut() {
+        // Method is empty as this is just a Pointcut, the implementations are in the advices.
+    }
+
+    /**
+     * Advice that logs methods throwing exceptions.
+     *
+     * @param joinPoint join point for advice
+     * @param e exception
+     */
+    @AfterThrowing(pointcut = "applicationPackagePointcut() && springBeanPointcut()", throwing = "e")
+    public void logAfterThrowing(JoinPoint joinPoint, Throwable e) {
+        if (env.acceptsProfiles(JHipsterConstants.SPRING_PROFILE_DEVELOPMENT)) {
+            log.error("Exception in {}.{}() with cause = \'{}\' and exception = \'{}\'", joinPoint.getSignature().getDeclaringTypeName(),
+                joinPoint.getSignature().getName(), e.getCause() != null? e.getCause() : "NULL", e.getMessage(), e);
+
+        } else {
+            log.error("Exception in {}.{}() with cause = {}", joinPoint.getSignature().getDeclaringTypeName(),
+                joinPoint.getSignature().getName(), e.getCause() != null? e.getCause() : "NULL");
+        }
+    }
+
+    /**
+     * Advice that logs when a method is entered and exited.
+     *
+     * @param joinPoint join point for advice
+     * @return result
+     * @throws Throwable throws IllegalArgumentException
+     */
+    @Around("applicationPackagePointcut() && springBeanPointcut()")
+    public Object logAround(ProceedingJoinPoint joinPoint) throws Throwable {
+        if (log.isDebugEnabled()) {
+            log.debug("Enter: {}.{}() with argument[s] = {}", joinPoint.getSignature().getDeclaringTypeName(),
+                joinPoint.getSignature().getName(), Arrays.toString(joinPoint.getArgs()));
+        }
+        try {
+            Object result = joinPoint.proceed();
+            if (log.isDebugEnabled()) {
+                log.debug("Exit: {}.{}() with result = {}", joinPoint.getSignature().getDeclaringTypeName(),
+                    joinPoint.getSignature().getName(), result);
+            }
+            return result;
+        } catch (IllegalArgumentException e) {
+            log.error("Illegal argument: {} in {}.{}()", Arrays.toString(joinPoint.getArgs()),
+                joinPoint.getSignature().getDeclaringTypeName(), joinPoint.getSignature().getName());
+
+            throw e;
+        }
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/ApplicationProperties.java

@@ -0,0 +1,14 @@
+package org.hostsharing.hsadminng.config;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * Properties specific to Hsadmin Ng.
+ * <p>
+ * Properties are configured in the application.yml file.
+ * See {@link io.github.jhipster.config.JHipsterProperties} for a good example.
+ */
+@ConfigurationProperties(prefix = "application", ignoreUnknownFields = false)
+public class ApplicationProperties {
+
+}

src/main/java/org/hostsharing/hsadminng/config/AsyncConfiguration.java

@@ -0,0 +1,59 @@
+package org.hostsharing.hsadminng.config;
+
+import io.github.jhipster.async.ExceptionHandlingAsyncTaskExecutor;
+import io.github.jhipster.config.JHipsterProperties;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
+import org.springframework.aop.interceptor.SimpleAsyncUncaughtExceptionHandler;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.scheduling.annotation.*;
+import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
+import org.springframework.scheduling.annotation.SchedulingConfigurer;
+import org.springframework.scheduling.config.ScheduledTaskRegistrar;
+
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+
+@Configuration
+@EnableAsync
+@EnableScheduling
+public class AsyncConfiguration implements AsyncConfigurer, SchedulingConfigurer {
+
+    private final Logger log = LoggerFactory.getLogger(AsyncConfiguration.class);
+
+    private final JHipsterProperties jHipsterProperties;
+
+    public AsyncConfiguration(JHipsterProperties jHipsterProperties) {
+        this.jHipsterProperties = jHipsterProperties;
+    }
+
+    @Override
+    @Bean(name = "taskExecutor")
+    public Executor getAsyncExecutor() {
+        log.debug("Creating Async Task Executor");
+        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+        executor.setCorePoolSize(jHipsterProperties.getAsync().getCorePoolSize());
+        executor.setMaxPoolSize(jHipsterProperties.getAsync().getMaxPoolSize());
+        executor.setQueueCapacity(jHipsterProperties.getAsync().getQueueCapacity());
+        executor.setThreadNamePrefix("hsadmin-ng-Executor-");
+        return new ExceptionHandlingAsyncTaskExecutor(executor);
+    }
+
+    @Override
+    public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
+        return new SimpleAsyncUncaughtExceptionHandler();
+    }
+    
+    @Override
+    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
+        taskRegistrar.setScheduler(scheduledTaskExecutor());
+    }
+
+    @Bean
+    public Executor scheduledTaskExecutor() {
+        return Executors.newScheduledThreadPool(jHipsterProperties.getAsync().getCorePoolSize());
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/CacheConfiguration.java

@@ -0,0 +1,39 @@
+package org.hostsharing.hsadminng.config;
+
+import java.time.Duration;
+
+import org.ehcache.config.builders.*;
+import org.ehcache.jsr107.Eh107Configuration;
+
+import io.github.jhipster.config.JHipsterProperties;
+
+import org.springframework.boot.autoconfigure.cache.JCacheManagerCustomizer;
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.context.annotation.*;
+
+@Configuration
+@EnableCaching
+public class CacheConfiguration {
+
+    private final javax.cache.configuration.Configuration<Object, Object> jcacheConfiguration;
+
+    public CacheConfiguration(JHipsterProperties jHipsterProperties) {
+        JHipsterProperties.Cache.Ehcache ehcache =
+            jHipsterProperties.getCache().getEhcache();
+
+        jcacheConfiguration = Eh107Configuration.fromEhcacheCacheConfiguration(
+            CacheConfigurationBuilder.newCacheConfigurationBuilder(Object.class, Object.class,
+                ResourcePoolsBuilder.heap(ehcache.getMaxEntries()))
+                .withExpiry(ExpiryPolicyBuilder.timeToLiveExpiration(Duration.ofSeconds(ehcache.getTimeToLiveSeconds())))
+                .build());
+    }
+
+    @Bean
+    public JCacheManagerCustomizer cacheManagerCustomizer() {
+        return cm -> {
+            cm.createCache(org.hostsharing.hsadminng.repository.UserRepository.USERS_BY_LOGIN_CACHE, jcacheConfiguration);
+            cm.createCache(org.hostsharing.hsadminng.repository.UserRepository.USERS_BY_EMAIL_CACHE, jcacheConfiguration);
+            // jhipster-needle-ehcache-add-entry
+        };
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/CloudDatabaseConfiguration.java

@@ -0,0 +1,28 @@
+package org.hostsharing.hsadminng.config;
+
+import io.github.jhipster.config.JHipsterConstants;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.cloud.config.java.AbstractCloudConfig;
+import org.springframework.context.annotation.*;
+
+import javax.sql.DataSource;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+
+@Configuration
+@Profile(JHipsterConstants.SPRING_PROFILE_CLOUD)
+public class CloudDatabaseConfiguration extends AbstractCloudConfig {
+
+    private final Logger log = LoggerFactory.getLogger(CloudDatabaseConfiguration.class);
+    
+    private static final String CLOUD_CONFIGURATION_HIKARI_PREFIX = "spring.datasource.hikari";
+
+    @Bean
+    @ConfigurationProperties(CLOUD_CONFIGURATION_HIKARI_PREFIX)
+    public DataSource dataSource() {
+        log.info("Configuring JDBC datasource from a cloud provider");
+        return connectionFactory().dataSource();
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/Constants.java

@@ -0,0 +1,17 @@
+package org.hostsharing.hsadminng.config;
+
+/**
+ * Application constants.
+ */
+public final class Constants {
+
+    // Regex for acceptable logins
+    public static final String LOGIN_REGEX = "^[_.@A-Za-z0-9-]*$";
+
+    public static final String SYSTEM_ACCOUNT = "system";
+    public static final String ANONYMOUS_USER = "anonymoususer";
+    public static final String DEFAULT_LANGUAGE = "de";
+    
+    private Constants() {
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/DatabaseConfiguration.java

@@ -0,0 +1,59 @@
+package org.hostsharing.hsadminng.config;
+
+import io.github.jhipster.config.JHipsterConstants;
+import io.github.jhipster.config.h2.H2ConfigurationHelper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Profile;
+
+import org.springframework.core.env.Environment;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+import org.springframework.transaction.annotation.EnableTransactionManagement;
+
+import java.sql.SQLException;
+
+@Configuration
+@EnableJpaRepositories("org.hostsharing.hsadminng.repository")
+@EnableJpaAuditing(auditorAwareRef = "springSecurityAuditorAware")
+@EnableTransactionManagement
+public class DatabaseConfiguration {
+
+    private final Logger log = LoggerFactory.getLogger(DatabaseConfiguration.class);
+
+    private final Environment env;
+
+    public DatabaseConfiguration(Environment env) {
+        this.env = env;
+    }
+
+    /**
+     * Open the TCP port for the H2 database, so it is available remotely.
+     *
+     * @return the H2 database TCP server
+     * @throws SQLException if the server failed to start
+     */
+    @Bean(initMethod = "start", destroyMethod = "stop")
+    @Profile(JHipsterConstants.SPRING_PROFILE_DEVELOPMENT)
+    public Object h2TCPServer() throws SQLException {
+        String port = getValidPortForH2();
+        log.debug("H2 database is available on port {}", port);
+        return H2ConfigurationHelper.createServer(port);
+    }
+	
+    private String getValidPortForH2() {
+        int port = Integer.parseInt(env.getProperty("server.port"));
+        if (port < 10000) {
+            port = 10000 + port;
+        } else {
+            if (port < 63536) {
+                port = port + 2000;
+            } else {
+                port = port - 2000;
+            }
+        }
+        return String.valueOf(port);
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/DateTimeFormatConfiguration.java

@@ -0,0 +1,20 @@
+package org.hostsharing.hsadminng.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.format.FormatterRegistry;
+import org.springframework.format.datetime.standard.DateTimeFormatterRegistrar;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+/**
+ * Configure the converters to use the ISO format for dates by default.
+ */
+@Configuration
+public class DateTimeFormatConfiguration implements WebMvcConfigurer {
+
+    @Override
+    public void addFormatters(FormatterRegistry registry) {
+        DateTimeFormatterRegistrar registrar = new DateTimeFormatterRegistrar();
+        registrar.setUseIsoFormat(true);
+        registrar.registerFormatters(registry);
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/DefaultProfileUtil.java

@@ -0,0 +1,51 @@
+package org.hostsharing.hsadminng.config;
+
+import io.github.jhipster.config.JHipsterConstants;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.core.env.Environment;
+
+import java.util.*;
+
+/**
+ * Utility class to load a Spring profile to be used as default
+ * when there is no <code>spring.profiles.active</code> set in the environment or as command line argument.
+ * If the value is not available in <code>application.yml</code> then <code>dev</code> profile will be used as default.
+ */
+public final class DefaultProfileUtil {
+
+    private static final String SPRING_PROFILE_DEFAULT = "spring.profiles.default";
+
+    private DefaultProfileUtil() {
+    }
+
+    /**
+     * Set a default to use when no profile is configured.
+     *
+     * @param app the Spring application
+     */
+    public static void addDefaultProfile(SpringApplication app) {
+        Map<String, Object> defProperties = new HashMap<>();
+        /*
+        * The default profile to use when no other profiles are defined
+        * This cannot be set in the <code>application.yml</code> file.
+        * See https://github.com/spring-projects/spring-boot/issues/1219
+        */
+        defProperties.put(SPRING_PROFILE_DEFAULT, JHipsterConstants.SPRING_PROFILE_DEVELOPMENT);
+        app.setDefaultProperties(defProperties);
+    }
+
+    /**
+     * Get the profiles that are applied else get default profiles.
+     *
+     * @param env spring environment
+     * @return profiles
+     */
+    public static String[] getActiveProfiles(Environment env) {
+        String[] profiles = env.getActiveProfiles();
+        if (profiles.length == 0) {
+            return env.getDefaultProfiles();
+        }
+        return profiles;
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/JacksonConfiguration.java

@@ -0,0 +1,63 @@
+package org.hostsharing.hsadminng.config;
+
+import com.fasterxml.jackson.datatype.hibernate5.Hibernate5Module;
+import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import com.fasterxml.jackson.module.afterburner.AfterburnerModule;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.zalando.problem.ProblemModule;
+import org.zalando.problem.violations.ConstraintViolationProblemModule;
+
+@Configuration
+public class JacksonConfiguration {
+
+    /**
+     * Support for Java date and time API.
+     * @return the corresponding Jackson module.
+     */
+    @Bean
+    public JavaTimeModule javaTimeModule() {
+        return new JavaTimeModule();
+    }
+
+    @Bean
+    public Jdk8Module jdk8TimeModule() {
+        return new Jdk8Module();
+    }
+
+
+    /*
+     * Support for Hibernate types in Jackson.
+     */
+    @Bean
+    public Hibernate5Module hibernate5Module() {
+        return new Hibernate5Module();
+    }
+
+    /*
+     * Jackson Afterburner module to speed up serialization/deserialization.
+     */
+    @Bean
+    public AfterburnerModule afterburnerModule() {
+        return new AfterburnerModule();
+    }
+
+    /*
+     * Module for serialization/deserialization of RFC7807 Problem.
+     */
+    @Bean
+    ProblemModule problemModule() {
+        return new ProblemModule();
+    }
+
+    /*
+     * Module for serialization/deserialization of ConstraintViolationProblem.
+     */
+    @Bean
+    ConstraintViolationProblemModule constraintViolationProblemModule() {
+        return new ConstraintViolationProblemModule();
+    }
+
+}

src/main/java/org/hostsharing/hsadminng/config/LiquibaseConfiguration.java

@@ -0,0 +1,50 @@
+package org.hostsharing.hsadminng.config;
+
+import javax.sql.DataSource;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.autoconfigure.liquibase.LiquibaseProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.env.Environment;
+import org.springframework.core.task.TaskExecutor;
+
+import io.github.jhipster.config.JHipsterConstants;
+import io.github.jhipster.config.liquibase.AsyncSpringLiquibase;
+import liquibase.integration.spring.SpringLiquibase;
+
+@Configuration
+public class LiquibaseConfiguration {
+
+    private final Logger log = LoggerFactory.getLogger(LiquibaseConfiguration.class);
+
+    private final Environment env;
+
+
+    public LiquibaseConfiguration(Environment env) {
+        this.env = env;
+    }
+
+    @Bean
+    public SpringLiquibase liquibase(@Qualifier("taskExecutor") TaskExecutor taskExecutor,
+            DataSource dataSource, LiquibaseProperties liquibaseProperties) {
+
+        // Use liquibase.integration.spring.SpringLiquibase if you don't want Liquibase to start asynchronously
+        SpringLiquibase liquibase = new AsyncSpringLiquibase(taskExecutor, env);
+        liquibase.setDataSource(dataSource);
+        liquibase.setChangeLog("classpath:config/liquibase/master.xml");
+        liquibase.setContexts(liquibaseProperties.getContexts());
+        liquibase.setDefaultSchema(liquibaseProperties.getDefaultSchema());
+        liquibase.setDropFirst(liquibaseProperties.isDropFirst());
+        liquibase.setChangeLogParameters(liquibaseProperties.getParameters());
+        if (env.acceptsProfiles(JHipsterConstants.SPRING_PROFILE_NO_LIQUIBASE)) {
+            liquibase.setShouldRun(false);
+        } else {
+            liquibase.setShouldRun(liquibaseProperties.isEnabled());
+            log.debug("Configuring Liquibase");
+        }
+        return liquibase;
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/LocaleConfiguration.java

@@ -0,0 +1,27 @@
+package org.hostsharing.hsadminng.config;
+
+import io.github.jhipster.config.locale.AngularCookieLocaleResolver;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.LocaleResolver;
+import org.springframework.web.servlet.config.annotation.*;
+import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
+
+@Configuration
+public class LocaleConfiguration implements WebMvcConfigurer {
+
+    @Bean(name = "localeResolver")
+    public LocaleResolver localeResolver() {
+        AngularCookieLocaleResolver cookieLocaleResolver = new AngularCookieLocaleResolver();
+        cookieLocaleResolver.setCookieName("NG_TRANSLATE_LANG_KEY");
+        return cookieLocaleResolver;
+    }
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor();
+        localeChangeInterceptor.setParamName("language");
+        registry.addInterceptor(localeChangeInterceptor);
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/LoggingAspectConfiguration.java

@@ -0,0 +1,19 @@
+package org.hostsharing.hsadminng.config;
+
+import org.hostsharing.hsadminng.aop.logging.LoggingAspect;
+
+import io.github.jhipster.config.JHipsterConstants;
+
+import org.springframework.context.annotation.*;
+import org.springframework.core.env.Environment;
+
+@Configuration
+@EnableAspectJAutoProxy
+public class LoggingAspectConfiguration {
+
+    @Bean
+    @Profile(JHipsterConstants.SPRING_PROFILE_DEVELOPMENT)
+    public LoggingAspect loggingAspect(Environment env) {
+        return new LoggingAspect(env);
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/LoggingConfiguration.java

@@ -0,0 +1,154 @@
+package org.hostsharing.hsadminng.config;
+
+import java.net.InetSocketAddress;
+import java.util.Iterator;
+
+import io.github.jhipster.config.JHipsterProperties;
+
+import ch.qos.logback.classic.AsyncAppender;
+import ch.qos.logback.classic.Level;
+import ch.qos.logback.classic.LoggerContext;
+import ch.qos.logback.classic.boolex.OnMarkerEvaluator;
+import ch.qos.logback.classic.spi.ILoggingEvent;
+import ch.qos.logback.classic.spi.LoggerContextListener;
+import ch.qos.logback.core.Appender;
+import ch.qos.logback.core.filter.EvaluatorFilter;
+import ch.qos.logback.core.spi.ContextAwareBase;
+import ch.qos.logback.core.spi.FilterReply;
+import net.logstash.logback.appender.LogstashTcpSocketAppender;
+import net.logstash.logback.encoder.LogstashEncoder;
+import net.logstash.logback.stacktrace.ShortenedThrowableConverter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class LoggingConfiguration {
+
+    private static final String LOGSTASH_APPENDER_NAME = "LOGSTASH";
+
+    private static final String ASYNC_LOGSTASH_APPENDER_NAME = "ASYNC_LOGSTASH";
+
+    private final Logger log = LoggerFactory.getLogger(LoggingConfiguration.class);
+
+    private LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
+
+    private final String appName;
+
+    private final String serverPort;
+
+    private final JHipsterProperties jHipsterProperties;
+
+    public LoggingConfiguration(@Value("${spring.application.name}") String appName, @Value("${server.port}") String serverPort,
+         JHipsterProperties jHipsterProperties) {
+        this.appName = appName;
+        this.serverPort = serverPort;
+        this.jHipsterProperties = jHipsterProperties;
+        if (jHipsterProperties.getLogging().getLogstash().isEnabled()) {
+            addLogstashAppender(context);
+            addContextListener(context);
+        }
+        if (jHipsterProperties.getMetrics().getLogs().isEnabled()) {
+            setMetricsMarkerLogbackFilter(context);
+        }
+    }
+
+    private void addContextListener(LoggerContext context) {
+        LogbackLoggerContextListener loggerContextListener = new LogbackLoggerContextListener();
+        loggerContextListener.setContext(context);
+        context.addListener(loggerContextListener);
+    }
+
+    private void addLogstashAppender(LoggerContext context) {
+        log.info("Initializing Logstash logging");
+
+        LogstashTcpSocketAppender logstashAppender = new LogstashTcpSocketAppender();
+        logstashAppender.setName(LOGSTASH_APPENDER_NAME);
+        logstashAppender.setContext(context);
+        String customFields = "{\"app_name\":\"" + appName + "\",\"app_port\":\"" + serverPort + "\"}";
+
+        // More documentation is available at: https://github.com/logstash/logstash-logback-encoder
+        LogstashEncoder logstashEncoder = new LogstashEncoder();
+        // Set the Logstash appender config from JHipster properties
+        logstashAppender.addDestinations(new InetSocketAddress(jHipsterProperties.getLogging().getLogstash().getHost(), jHipsterProperties.getLogging().getLogstash().getPort()));
+
+        ShortenedThrowableConverter throwableConverter = new ShortenedThrowableConverter();
+        throwableConverter.setRootCauseFirst(true);
+        logstashEncoder.setThrowableConverter(throwableConverter);
+        logstashEncoder.setCustomFields(customFields);
+
+        logstashAppender.setEncoder(logstashEncoder);
+        logstashAppender.start();
+
+        // Wrap the appender in an Async appender for performance
+        AsyncAppender asyncLogstashAppender = new AsyncAppender();
+        asyncLogstashAppender.setContext(context);
+        asyncLogstashAppender.setName(ASYNC_LOGSTASH_APPENDER_NAME);
+        asyncLogstashAppender.setQueueSize(jHipsterProperties.getLogging().getLogstash().getQueueSize());
+        asyncLogstashAppender.addAppender(logstashAppender);
+        asyncLogstashAppender.start();
+
+        context.getLogger("ROOT").addAppender(asyncLogstashAppender);
+    }
+
+    // Configure a log filter to remove "metrics" logs from all appenders except the "LOGSTASH" appender
+    private void setMetricsMarkerLogbackFilter(LoggerContext context) {
+        log.info("Filtering metrics logs from all appenders except the {} appender", LOGSTASH_APPENDER_NAME);
+        OnMarkerEvaluator onMarkerMetricsEvaluator = new OnMarkerEvaluator();
+        onMarkerMetricsEvaluator.setContext(context);
+        onMarkerMetricsEvaluator.addMarker("metrics");
+        onMarkerMetricsEvaluator.start();
+        EvaluatorFilter<ILoggingEvent> metricsFilter = new EvaluatorFilter<>();
+        metricsFilter.setContext(context);
+        metricsFilter.setEvaluator(onMarkerMetricsEvaluator);
+        metricsFilter.setOnMatch(FilterReply.DENY);
+        metricsFilter.start();
+
+        for (ch.qos.logback.classic.Logger logger : context.getLoggerList()) {
+            for (Iterator<Appender<ILoggingEvent>> it = logger.iteratorForAppenders(); it.hasNext();) {
+                Appender<ILoggingEvent> appender = it.next();
+                if (!appender.getName().equals(ASYNC_LOGSTASH_APPENDER_NAME)) {
+                    log.debug("Filter metrics logs from the {} appender", appender.getName());
+                    appender.setContext(context);
+                    appender.addFilter(metricsFilter);
+                    appender.start();
+                }
+            }
+        }
+    }
+
+    /**
+     * Logback configuration is achieved by configuration file and API.
+     * When configuration file change is detected, the configuration is reset.
+     * This listener ensures that the programmatic configuration is also re-applied after reset.
+     */
+    class LogbackLoggerContextListener extends ContextAwareBase implements LoggerContextListener {
+
+        @Override
+        public boolean isResetResistant() {
+            return true;
+        }
+
+        @Override
+        public void onStart(LoggerContext context) {
+            addLogstashAppender(context);
+        }
+
+        @Override
+        public void onReset(LoggerContext context) {
+            addLogstashAppender(context);
+        }
+
+        @Override
+        public void onStop(LoggerContext context) {
+            // Nothing to do.
+        }
+
+        @Override
+        public void onLevelChange(ch.qos.logback.classic.Logger logger, Level level) {
+            // Nothing to do.
+        }
+    }
+
+}

src/main/java/org/hostsharing/hsadminng/config/SecurityConfiguration.java

@@ -0,0 +1,121 @@
+package org.hostsharing.hsadminng.config;
+
+import org.hostsharing.hsadminng.security.*;
+import org.hostsharing.hsadminng.security.jwt.*;
+
+import org.springframework.beans.factory.BeanInitializationException;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.http.HttpMethod;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
+import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.builders.WebSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
+import org.springframework.web.filter.CorsFilter;
+import org.zalando.problem.spring.web.advice.security.SecurityProblemSupport;
+
+import javax.annotation.PostConstruct;
+
+@Configuration
+@EnableWebSecurity
+@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
+@Import(SecurityProblemSupport.class)
+public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
+
+    private final AuthenticationManagerBuilder authenticationManagerBuilder;
+
+    private final UserDetailsService userDetailsService;
+
+    private final TokenProvider tokenProvider;
+
+    private final CorsFilter corsFilter;
+
+    private final SecurityProblemSupport problemSupport;
+
+    public SecurityConfiguration(AuthenticationManagerBuilder authenticationManagerBuilder, UserDetailsService userDetailsService, TokenProvider tokenProvider, CorsFilter corsFilter, SecurityProblemSupport problemSupport) {
+        this.authenticationManagerBuilder = authenticationManagerBuilder;
+        this.userDetailsService = userDetailsService;
+        this.tokenProvider = tokenProvider;
+        this.corsFilter = corsFilter;
+        this.problemSupport = problemSupport;
+    }
+
+    @PostConstruct
+    public void init() {
+        try {
+            authenticationManagerBuilder
+                .userDetailsService(userDetailsService)
+                .passwordEncoder(passwordEncoder());
+        } catch (Exception e) {
+            throw new BeanInitializationException("Security configuration failed", e);
+        }
+    }
+
+    @Override
+    @Bean
+    public AuthenticationManager authenticationManagerBean() throws Exception {
+        return super.authenticationManagerBean();
+    }
+
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+
+    @Override
+    public void configure(WebSecurity web) throws Exception {
+        web.ignoring()
+            .antMatchers(HttpMethod.OPTIONS, "/**")
+            .antMatchers("/app/**/*.{js,html}")
+            .antMatchers("/i18n/**")
+            .antMatchers("/content/**")
+            .antMatchers("/h2-console/**")
+            .antMatchers("/swagger-ui/index.html")
+            .antMatchers("/test/**");
+    }
+
+    @Override
+    public void configure(HttpSecurity http) throws Exception {
+        http
+            .csrf()
+            .disable()
+            .addFilterBefore(corsFilter, UsernamePasswordAuthenticationFilter.class)
+            .exceptionHandling()
+            .authenticationEntryPoint(problemSupport)
+            .accessDeniedHandler(problemSupport)
+        .and()
+            .headers()
+            .frameOptions()
+            .disable()
+        .and()
+            .sessionManagement()
+            .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
+        .and()
+            .authorizeRequests()
+            .antMatchers("/api/register").permitAll()
+            .antMatchers("/api/activate").permitAll()
+            .antMatchers("/api/authenticate").permitAll()
+            .antMatchers("/api/account/reset-password/init").permitAll()
+            .antMatchers("/api/account/reset-password/finish").permitAll()
+            .antMatchers("/api/**").authenticated()
+            .antMatchers("/management/health").permitAll()
+            .antMatchers("/management/info").permitAll()
+            .antMatchers("/management/**").hasAuthority(AuthoritiesConstants.ADMIN)
+        .and()
+            .apply(securityConfigurerAdapter());
+
+    }
+
+    private JWTConfigurer securityConfigurerAdapter() {
+        return new JWTConfigurer(tokenProvider);
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/WebConfigurer.java

@@ -0,0 +1,170 @@
+package org.hostsharing.hsadminng.config;
+
+import io.github.jhipster.config.JHipsterConstants;
+import io.github.jhipster.config.JHipsterProperties;
+import io.github.jhipster.config.h2.H2ConfigurationHelper;
+import io.github.jhipster.web.filter.CachingHttpHeadersFilter;
+import io.undertow.UndertowOptions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.web.embedded.undertow.UndertowServletWebServerFactory;
+import org.springframework.boot.web.server.*;
+import org.springframework.boot.web.servlet.ServletContextInitializer;
+import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.env.Environment;
+import org.springframework.http.MediaType;
+import org.springframework.web.cors.CorsConfiguration;
+import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
+import org.springframework.web.filter.CorsFilter;
+
+import javax.servlet.*;
+import java.io.File;
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Paths;
+import java.util.*;
+
+import static java.net.URLDecoder.decode;
+
+/**
+ * Configuration of web application with Servlet 3.0 APIs.
+ */
+@Configuration
+public class WebConfigurer implements ServletContextInitializer, WebServerFactoryCustomizer<WebServerFactory> {
+
+    private final Logger log = LoggerFactory.getLogger(WebConfigurer.class);
+
+    private final Environment env;
+
+    private final JHipsterProperties jHipsterProperties;
+
+    public WebConfigurer(Environment env, JHipsterProperties jHipsterProperties) {
+
+        this.env = env;
+        this.jHipsterProperties = jHipsterProperties;
+    }
+
+    @Override
+    public void onStartup(ServletContext servletContext) throws ServletException {
+        if (env.getActiveProfiles().length != 0) {
+            log.info("Web application configuration, using profiles: {}", (Object[]) env.getActiveProfiles());
+        }
+        EnumSet<DispatcherType> disps = EnumSet.of(DispatcherType.REQUEST, DispatcherType.FORWARD, DispatcherType.ASYNC);
+        if (env.acceptsProfiles(JHipsterConstants.SPRING_PROFILE_PRODUCTION)) {
+            initCachingHttpHeadersFilter(servletContext, disps);
+        }
+        if (env.acceptsProfiles(JHipsterConstants.SPRING_PROFILE_DEVELOPMENT)) {
+            initH2Console(servletContext);
+        }
+        log.info("Web application fully configured");
+    }
+
+    /**
+     * Customize the Servlet engine: Mime types, the document root, the cache.
+     */
+    @Override
+    public void customize(WebServerFactory server) {
+        setMimeMappings(server);
+        // When running in an IDE or with ./gradlew bootRun, set location of the static web assets.
+        setLocationForStaticAssets(server);
+
+        /*
+         * Enable HTTP/2 for Undertow - https://twitter.com/ankinson/status/829256167700492288
+         * HTTP/2 requires HTTPS, so HTTP requests will fallback to HTTP/1.1.
+         * See the JHipsterProperties class and your application-*.yml configuration files
+         * for more information.
+         */
+        if (jHipsterProperties.getHttp().getVersion().equals(JHipsterProperties.Http.Version.V_2_0) &&
+            server instanceof UndertowServletWebServerFactory) {
+
+            ((UndertowServletWebServerFactory) server)
+                .addBuilderCustomizers(builder ->
+                    builder.setServerOption(UndertowOptions.ENABLE_HTTP2, true));
+        }
+    }
+
+    private void setMimeMappings(WebServerFactory server) {
+        if (server instanceof ConfigurableServletWebServerFactory) {
+            MimeMappings mappings = new MimeMappings(MimeMappings.DEFAULT);
+            // IE issue, see https://github.com/jhipster/generator-jhipster/pull/711
+            mappings.add("html", MediaType.TEXT_HTML_VALUE + ";charset=" + StandardCharsets.UTF_8.name().toLowerCase());
+            // CloudFoundry issue, see https://github.com/cloudfoundry/gorouter/issues/64
+            mappings.add("json", MediaType.TEXT_HTML_VALUE + ";charset=" + StandardCharsets.UTF_8.name().toLowerCase());
+            ConfigurableServletWebServerFactory servletWebServer = (ConfigurableServletWebServerFactory) server;
+            servletWebServer.setMimeMappings(mappings);
+        }
+    }
+
+    private void setLocationForStaticAssets(WebServerFactory server) {
+        if (server instanceof ConfigurableServletWebServerFactory) {
+            ConfigurableServletWebServerFactory servletWebServer = (ConfigurableServletWebServerFactory) server;
+            File root;
+            String prefixPath = resolvePathPrefix();
+            root = new File(prefixPath + "build/www/");
+            if (root.exists() && root.isDirectory()) {
+                servletWebServer.setDocumentRoot(root);
+            }
+        }
+    }
+
+    /**
+     * Resolve path prefix to static resources.
+     */
+    private String resolvePathPrefix() {
+        String fullExecutablePath;
+        try {
+            fullExecutablePath = decode(this.getClass().getResource("").getPath(), StandardCharsets.UTF_8.name());
+        } catch (UnsupportedEncodingException e) {
+            /* try without decoding if this ever happens */
+            fullExecutablePath = this.getClass().getResource("").getPath();
+        }
+        String rootPath = Paths.get(".").toUri().normalize().getPath();
+        String extractedPath = fullExecutablePath.replace(rootPath, "");
+        int extractionEndIndex = extractedPath.indexOf("build/");
+        if (extractionEndIndex <= 0) {
+            return "";
+        }
+        return extractedPath.substring(0, extractionEndIndex);
+    }
+
+    /**
+     * Initializes the caching HTTP Headers Filter.
+     */
+    private void initCachingHttpHeadersFilter(ServletContext servletContext,
+                                              EnumSet<DispatcherType> disps) {
+        log.debug("Registering Caching HTTP Headers Filter");
+        FilterRegistration.Dynamic cachingHttpHeadersFilter =
+            servletContext.addFilter("cachingHttpHeadersFilter",
+                new CachingHttpHeadersFilter(jHipsterProperties));
+
+        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/i18n/*");
+        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/content/*");
+        cachingHttpHeadersFilter.addMappingForUrlPatterns(disps, true, "/app/*");
+        cachingHttpHeadersFilter.setAsyncSupported(true);
+    }
+
+    @Bean
+    public CorsFilter corsFilter() {
+        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
+        CorsConfiguration config = jHipsterProperties.getCors();
+        if (config.getAllowedOrigins() != null && !config.getAllowedOrigins().isEmpty()) {
+            log.debug("Registering CORS filter");
+            source.registerCorsConfiguration("/api/**", config);
+            source.registerCorsConfiguration("/management/**", config);
+            source.registerCorsConfiguration("/v2/api-docs", config);
+        }
+        return new CorsFilter(source);
+    }
+
+    /**
+     * Initializes H2 console.
+     */
+    private void initH2Console(ServletContext servletContext) {
+        log.debug("Initialize H2 console");
+        H2ConfigurationHelper.initH2Console(servletContext);
+    }
+
+}

src/main/java/org/hostsharing/hsadminng/config/audit/AuditEventConverter.java

@@ -0,0 +1,86 @@
+package org.hostsharing.hsadminng.config.audit;
+
+import org.hostsharing.hsadminng.domain.PersistentAuditEvent;
+
+import org.springframework.boot.actuate.audit.AuditEvent;
+import org.springframework.security.web.authentication.WebAuthenticationDetails;
+import org.springframework.stereotype.Component;
+
+import java.util.*;
+
+@Component
+public class AuditEventConverter {
+
+    /**
+     * Convert a list of PersistentAuditEvent to a list of AuditEvent
+     *
+     * @param persistentAuditEvents the list to convert
+     * @return the converted list.
+     */
+    public List<AuditEvent> convertToAuditEvent(Iterable<PersistentAuditEvent> persistentAuditEvents) {
+        if (persistentAuditEvents == null) {
+            return Collections.emptyList();
+        }
+        List<AuditEvent> auditEvents = new ArrayList<>();
+        for (PersistentAuditEvent persistentAuditEvent : persistentAuditEvents) {
+            auditEvents.add(convertToAuditEvent(persistentAuditEvent));
+        }
+        return auditEvents;
+    }
+
+    /**
+     * Convert a PersistentAuditEvent to an AuditEvent
+     *
+     * @param persistentAuditEvent the event to convert
+     * @return the converted list.
+     */
+    public AuditEvent convertToAuditEvent(PersistentAuditEvent persistentAuditEvent) {
+        if (persistentAuditEvent == null) {
+            return null;
+        }
+        return new AuditEvent(persistentAuditEvent.getAuditEventDate(), persistentAuditEvent.getPrincipal(),
+            persistentAuditEvent.getAuditEventType(), convertDataToObjects(persistentAuditEvent.getData()));
+    }
+
+    /**
+     * Internal conversion. This is needed to support the current SpringBoot actuator AuditEventRepository interface
+     *
+     * @param data the data to convert
+     * @return a map of String, Object
+     */
+    public Map<String, Object> convertDataToObjects(Map<String, String> data) {
+        Map<String, Object> results = new HashMap<>();
+
+        if (data != null) {
+            for (Map.Entry<String, String> entry : data.entrySet()) {
+                results.put(entry.getKey(), entry.getValue());
+            }
+        }
+        return results;
+    }
+
+    /**
+     * Internal conversion. This method will allow to save additional data.
+     * By default, it will save the object as string
+     *
+     * @param data the data to convert
+     * @return a map of String, String
+     */
+    public Map<String, String> convertDataToStrings(Map<String, Object> data) {
+        Map<String, String> results = new HashMap<>();
+
+        if (data != null) {
+            for (Map.Entry<String, Object> entry : data.entrySet()) {
+                // Extract the data that will be saved.
+                if (entry.getValue() instanceof WebAuthenticationDetails) {
+                    WebAuthenticationDetails authenticationDetails = (WebAuthenticationDetails) entry.getValue();
+                    results.put("remoteAddress", authenticationDetails.getRemoteAddress());
+                    results.put("sessionId", authenticationDetails.getSessionId());
+                } else {
+                    results.put(entry.getKey(), Objects.toString(entry.getValue()));
+                }
+            }
+        }
+        return results;
+    }
+}

src/main/java/org/hostsharing/hsadminng/config/audit/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Audit specific code.
+ */
+package org.hostsharing.hsadminng.config.audit;

src/main/java/org/hostsharing/hsadminng/config/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Spring Framework configuration files.
+ */
+package org.hostsharing.hsadminng.config;

src/main/java/org/hostsharing/hsadminng/domain/AbstractAuditingEntity.java

@@ -0,0 +1,79 @@
+package org.hostsharing.hsadminng.domain;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import org.hibernate.envers.Audited;
+import org.springframework.data.annotation.CreatedBy;
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.annotation.LastModifiedBy;
+import org.springframework.data.annotation.LastModifiedDate;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+import java.io.Serializable;
+import java.time.Instant;
+import javax.persistence.Column;
+import javax.persistence.EntityListeners;
+import javax.persistence.MappedSuperclass;
+
+/**
+ * Base abstract class for entities which will hold definitions for created, last modified by and created,
+ * last modified by date.
+ */
+@MappedSuperclass
+@Audited
+@EntityListeners(AuditingEntityListener.class)
+public abstract class AbstractAuditingEntity implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @CreatedBy
+    @Column(name = "created_by", nullable = false, length = 50, updatable = false)
+    @JsonIgnore
+    private String createdBy;
+
+    @CreatedDate
+    @Column(name = "created_date", updatable = false)
+    @JsonIgnore
+    private Instant createdDate = Instant.now();
+
+    @LastModifiedBy
+    @Column(name = "last_modified_by", length = 50)
+    @JsonIgnore
+    private String lastModifiedBy;
+
+    @LastModifiedDate
+    @Column(name = "last_modified_date")
+    @JsonIgnore
+    private Instant lastModifiedDate = Instant.now();
+
+    public String getCreatedBy() {
+        return createdBy;
+    }
+
+    public void setCreatedBy(String createdBy) {
+        this.createdBy = createdBy;
+    }
+
+    public Instant getCreatedDate() {
+        return createdDate;
+    }
+
+    public void setCreatedDate(Instant createdDate) {
+        this.createdDate = createdDate;
+    }
+
+    public String getLastModifiedBy() {
+        return lastModifiedBy;
+    }
+
+    public void setLastModifiedBy(String lastModifiedBy) {
+        this.lastModifiedBy = lastModifiedBy;
+    }
+
+    public Instant getLastModifiedDate() {
+        return lastModifiedDate;
+    }
+
+    public void setLastModifiedDate(Instant lastModifiedDate) {
+        this.lastModifiedDate = lastModifiedDate;
+    }
+}

src/main/java/org/hostsharing/hsadminng/domain/Authority.java

@@ -0,0 +1,59 @@
+package org.hostsharing.hsadminng.domain;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+import javax.persistence.Column;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Size;
+import java.io.Serializable;
+
+/**
+ * An authority (a security role) used by Spring Security.
+ */
+@Entity
+@Table(name = "jhi_authority")
+public class Authority implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @NotNull
+    @Size(max = 50)
+    @Id
+    @Column(length = 50)
+    private String name;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        Authority authority = (Authority) o;
+
+        return !(name != null ? !name.equals(authority.name) : authority.name != null);
+    }
+
+    @Override
+    public int hashCode() {
+        return name != null ? name.hashCode() : 0;
+    }
+
+    @Override
+    public String toString() {
+        return "Authority{" +
+            "name='" + name + '\'' +
+            "}";
+    }
+}

src/main/java/org/hostsharing/hsadminng/domain/PersistentAuditEvent.java

@@ -0,0 +1,110 @@
+package org.hostsharing.hsadminng.domain;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+import java.io.Serializable;
+import java.time.Instant;
+import java.util.HashMap;
+import java.util.Objects;
+import java.util.Map;
+
+/**
+ * Persist AuditEvent managed by the Spring Boot actuator.
+ *
+ * @see org.springframework.boot.actuate.audit.AuditEvent
+ */
+@Entity
+@Table(name = "jhi_persistent_audit_event")
+public class PersistentAuditEvent implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sequenceGenerator")
+    @SequenceGenerator(name = "sequenceGenerator")
+    @Column(name = "event_id")
+    private Long id;
+
+    @NotNull
+    @Column(nullable = false)
+    private String principal;
+
+    @Column(name = "event_date")
+    private Instant auditEventDate;
+
+    @Column(name = "event_type")
+    private String auditEventType;
+
+    @ElementCollection
+    @MapKeyColumn(name = "name")
+    @Column(name = "value")
+    @CollectionTable(name = "jhi_persistent_audit_evt_data", joinColumns=@JoinColumn(name="event_id"))
+    private Map<String, String> data = new HashMap<>();
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getPrincipal() {
+        return principal;
+    }
+
+    public void setPrincipal(String principal) {
+        this.principal = principal;
+    }
+
+    public Instant getAuditEventDate() {
+        return auditEventDate;
+    }
+
+    public void setAuditEventDate(Instant auditEventDate) {
+        this.auditEventDate = auditEventDate;
+    }
+
+    public String getAuditEventType() {
+        return auditEventType;
+    }
+
+    public void setAuditEventType(String auditEventType) {
+        this.auditEventType = auditEventType;
+    }
+
+    public Map<String, String> getData() {
+        return data;
+    }
+
+    public void setData(Map<String, String> data) {
+        this.data = data;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        PersistentAuditEvent persistentAuditEvent = (PersistentAuditEvent) o;
+        return !(persistentAuditEvent.getId() == null || getId() == null) && Objects.equals(getId(), persistentAuditEvent.getId());
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(getId());
+    }
+
+    @Override
+    public String toString() {
+        return "PersistentAuditEvent{" +
+            "principal='" + principal + '\'' +
+            ", auditEventDate=" + auditEventDate +
+            ", auditEventType='" + auditEventType + '\'' +
+            '}';
+    }
+}

src/main/java/org/hostsharing/hsadminng/domain/User.java

@@ -0,0 +1,232 @@
+package org.hostsharing.hsadminng.domain;
+
+import org.hostsharing.hsadminng.config.Constants;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import org.apache.commons.lang3.StringUtils;
+import org.hibernate.annotations.BatchSize;
+import javax.validation.constraints.Email;
+
+import javax.persistence.*;
+import javax.validation.constraints.NotNull;
+import javax.validation.constraints.Pattern;
+import javax.validation.constraints.Size;
+import java.io.Serializable;
+import java.util.HashSet;
+import java.util.Locale;
+import java.util.Objects;
+import java.util.Set;
+import java.time.Instant;
+
+/**
+ * A user.
+ */
+@Entity
+@Table(name = "jhi_user")
+
+public class User extends AbstractAuditingEntity implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "sequenceGenerator")
+    @SequenceGenerator(name = "sequenceGenerator")
+    private Long id;
+
+    @NotNull
+    @Pattern(regexp = Constants.LOGIN_REGEX)
+    @Size(min = 1, max = 50)
+    @Column(length = 50, unique = true, nullable = false)
+    private String login;
+
+    @JsonIgnore
+    @NotNull
+    @Size(min = 60, max = 60)
+    @Column(name = "password_hash", length = 60, nullable = false)
+    private String password;
+
+    @Size(max = 50)
+    @Column(name = "first_name", length = 50)
+    private String firstName;
+
+    @Size(max = 50)
+    @Column(name = "last_name", length = 50)
+    private String lastName;
+
+    @Email
+    @Size(min = 5, max = 254)
+    @Column(length = 254, unique = true)
+    private String email;
+
+    @NotNull
+    @Column(nullable = false)
+    private boolean activated = false;
+
+    @Size(min = 2, max = 6)
+    @Column(name = "lang_key", length = 6)
+    private String langKey;
+
+    @Size(max = 256)
+    @Column(name = "image_url", length = 256)
+    private String imageUrl;
+
+    @Size(max = 20)
+    @Column(name = "activation_key", length = 20)
+    @JsonIgnore
+    private String activationKey;
+
+    @Size(max = 20)
+    @Column(name = "reset_key", length = 20)
+    @JsonIgnore
+    private String resetKey;
+
+    @Column(name = "reset_date")
+    private Instant resetDate = null;
+
+    @JsonIgnore
+    @ManyToMany
+    @JoinTable(
+        name = "jhi_user_authority",
+        joinColumns = {@JoinColumn(name = "user_id", referencedColumnName = "id")},
+        inverseJoinColumns = {@JoinColumn(name = "authority_name", referencedColumnName = "name")})
+
+    @BatchSize(size = 20)
+    private Set<Authority> authorities = new HashSet<>();
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getLogin() {
+        return login;
+    }
+
+    // Lowercase the login before saving it in database
+    public void setLogin(String login) {
+        this.login = StringUtils.lowerCase(login, Locale.ENGLISH);
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getImageUrl() {
+        return imageUrl;
+    }
+
+    public void setImageUrl(String imageUrl) {
+        this.imageUrl = imageUrl;
+    }
+
+    public boolean getActivated() {
+        return activated;
+    }
+
+    public void setActivated(boolean activated) {
+        this.activated = activated;
+    }
+
+    public String getActivationKey() {
+        return activationKey;
+    }
+
+    public void setActivationKey(String activationKey) {
+        this.activationKey = activationKey;
+    }
+
+    public String getResetKey() {
+        return resetKey;
+    }
+
+    public void setResetKey(String resetKey) {
+        this.resetKey = resetKey;
+    }
+
+    public Instant getResetDate() {
+        return resetDate;
+    }
+
+    public void setResetDate(Instant resetDate) {
+        this.resetDate = resetDate;
+    }
+
+    public String getLangKey() {
+        return langKey;
+    }
+
+    public void setLangKey(String langKey) {
+        this.langKey = langKey;
+    }
+
+    public Set<Authority> getAuthorities() {
+        return authorities;
+    }
+
+    public void setAuthorities(Set<Authority> authorities) {
+        this.authorities = authorities;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+
+        User user = (User) o;
+        return !(user.getId() == null || getId() == null) && Objects.equals(getId(), user.getId());
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(getId());
+    }
+
+    @Override
+    public String toString() {
+        return "User{" +
+            "login='" + login + '\'' +
+            ", firstName='" + firstName + '\'' +
+            ", lastName='" + lastName + '\'' +
+            ", email='" + email + '\'' +
+            ", imageUrl='" + imageUrl + '\'' +
+            ", activated='" + activated + '\'' +
+            ", langKey='" + langKey + '\'' +
+            ", activationKey='" + activationKey + '\'' +
+            "}";
+    }
+}

src/main/java/org/hostsharing/hsadminng/domain/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * JPA domain objects.
+ */
+package org.hostsharing.hsadminng.domain;

src/main/java/org/hostsharing/hsadminng/repository/AuthorityRepository.java

@@ -0,0 +1,11 @@
+package org.hostsharing.hsadminng.repository;
+
+import org.hostsharing.hsadminng.domain.Authority;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * Spring Data JPA repository for the Authority entity.
+ */
+public interface AuthorityRepository extends JpaRepository<Authority, String> {
+}

src/main/java/org/hostsharing/hsadminng/repository/CustomAuditEventRepository.java

@@ -0,0 +1,89 @@
+package org.hostsharing.hsadminng.repository;
+
+import org.hostsharing.hsadminng.config.Constants;
+import org.hostsharing.hsadminng.config.audit.AuditEventConverter;
+import org.hostsharing.hsadminng.domain.PersistentAuditEvent;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.actuate.audit.AuditEvent;
+import org.springframework.boot.actuate.audit.AuditEventRepository;
+import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Propagation;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.Instant;
+import java.util.*;
+
+/**
+ * An implementation of Spring Boot's AuditEventRepository.
+ */
+@Repository
+public class CustomAuditEventRepository implements AuditEventRepository {
+
+    private static final String AUTHORIZATION_FAILURE = "AUTHORIZATION_FAILURE";
+
+    /**
+     * Should be the same as in Liquibase migration.
+     */
+    protected static final int EVENT_DATA_COLUMN_MAX_LENGTH = 255;
+
+    private final PersistenceAuditEventRepository persistenceAuditEventRepository;
+
+    private final AuditEventConverter auditEventConverter;
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    public CustomAuditEventRepository(PersistenceAuditEventRepository persistenceAuditEventRepository,
+            AuditEventConverter auditEventConverter) {
+
+        this.persistenceAuditEventRepository = persistenceAuditEventRepository;
+        this.auditEventConverter = auditEventConverter;
+    }
+
+    @Override
+    public List<AuditEvent> find(String principal, Instant after, String type) {
+        Iterable<PersistentAuditEvent> persistentAuditEvents =
+            persistenceAuditEventRepository.findByPrincipalAndAuditEventDateAfterAndAuditEventType(principal, after, type);
+        return auditEventConverter.convertToAuditEvent(persistentAuditEvents);
+    }
+
+    @Override
+    @Transactional(propagation = Propagation.REQUIRES_NEW)
+    public void add(AuditEvent event) {
+        if (!AUTHORIZATION_FAILURE.equals(event.getType()) &&
+            !Constants.ANONYMOUS_USER.equals(event.getPrincipal())) {
+
+            PersistentAuditEvent persistentAuditEvent = new PersistentAuditEvent();
+            persistentAuditEvent.setPrincipal(event.getPrincipal());
+            persistentAuditEvent.setAuditEventType(event.getType());
+            persistentAuditEvent.setAuditEventDate(event.getTimestamp());
+            Map<String, String> eventData = auditEventConverter.convertDataToStrings(event.getData());
+            persistentAuditEvent.setData(truncate(eventData));
+            persistenceAuditEventRepository.save(persistentAuditEvent);
+        }
+    }
+
+    /**
+     * Truncate event data that might exceed column length.
+     */
+    private Map<String, String> truncate(Map<String, String> data) {
+        Map<String, String> results = new HashMap<>();
+
+        if (data != null) {
+            for (Map.Entry<String, String> entry : data.entrySet()) {
+                String value = entry.getValue();
+                if (value != null) {
+                    int length = value.length();
+                    if (length > EVENT_DATA_COLUMN_MAX_LENGTH) {
+                        value = value.substring(0, EVENT_DATA_COLUMN_MAX_LENGTH);
+                        log.warn("Event data for {} too long ({}) has been truncated to {}. Consider increasing column width.",
+                                 entry.getKey(), length, EVENT_DATA_COLUMN_MAX_LENGTH);
+                    }
+                }
+                results.put(entry.getKey(), value);
+            }
+        }
+        return results;
+    }
+}

src/main/java/org/hostsharing/hsadminng/repository/PersistenceAuditEventRepository.java

@@ -0,0 +1,25 @@
+package org.hostsharing.hsadminng.repository;
+
+import org.hostsharing.hsadminng.domain.PersistentAuditEvent;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.time.Instant;
+import java.util.List;
+
+/**
+ * Spring Data JPA repository for the PersistentAuditEvent entity.
+ */
+public interface PersistenceAuditEventRepository extends JpaRepository<PersistentAuditEvent, Long> {
+
+    List<PersistentAuditEvent> findByPrincipal(String principal);
+
+    List<PersistentAuditEvent> findByAuditEventDateAfter(Instant after);
+
+    List<PersistentAuditEvent> findByPrincipalAndAuditEventDateAfter(String principal, Instant after);
+
+    List<PersistentAuditEvent> findByPrincipalAndAuditEventDateAfterAndAuditEventType(String principal, Instant after, String type);
+
+    Page<PersistentAuditEvent> findAllByAuditEventDateBetween(Instant fromDate, Instant toDate, Pageable pageable);
+}

src/main/java/org/hostsharing/hsadminng/repository/UserRepository.java

@@ -0,0 +1,47 @@
+package org.hostsharing.hsadminng.repository;
+
+import org.hostsharing.hsadminng.domain.User;
+
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.EntityGraph;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+import java.util.List;
+import java.util.Optional;
+import java.time.Instant;
+
+/**
+ * Spring Data JPA repository for the User entity.
+ */
+@Repository
+public interface UserRepository extends JpaRepository<User, Long> {
+
+    String USERS_BY_LOGIN_CACHE = "usersByLogin";
+
+    String USERS_BY_EMAIL_CACHE = "usersByEmail";
+
+    Optional<User> findOneByActivationKey(String activationKey);
+
+    List<User> findAllByActivatedIsFalseAndCreatedDateBefore(Instant dateTime);
+
+    Optional<User> findOneByResetKey(String resetKey);
+
+    Optional<User> findOneByEmailIgnoreCase(String email);
+
+    Optional<User> findOneByLogin(String login);
+
+    @EntityGraph(attributePaths = "authorities")
+    Optional<User> findOneWithAuthoritiesById(Long id);
+
+    @EntityGraph(attributePaths = "authorities")
+    @Cacheable(cacheNames = USERS_BY_LOGIN_CACHE)
+    Optional<User> findOneWithAuthoritiesByLogin(String login);
+
+    @EntityGraph(attributePaths = "authorities")
+    @Cacheable(cacheNames = USERS_BY_EMAIL_CACHE)
+    Optional<User> findOneWithAuthoritiesByEmail(String email);
+
+    Page<User> findAllByLoginNot(Pageable pageable, String login);
+}

src/main/java/org/hostsharing/hsadminng/repository/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Spring Data JPA repositories.
+ */
+package org.hostsharing.hsadminng.repository;

src/main/java/org/hostsharing/hsadminng/security/AuthoritiesConstants.java

@@ -0,0 +1,16 @@
+package org.hostsharing.hsadminng.security;
+
+/**
+ * Constants for Spring Security authorities.
+ */
+public final class AuthoritiesConstants {
+
+    public static final String ADMIN = "ROLE_ADMIN";
+
+    public static final String USER = "ROLE_USER";
+
+    public static final String ANONYMOUS = "ROLE_ANONYMOUS";
+
+    private AuthoritiesConstants() {
+    }
+}

src/main/java/org/hostsharing/hsadminng/security/DomainUserDetailsService.java

@@ -0,0 +1,62 @@
+package org.hostsharing.hsadminng.security;
+
+import org.hostsharing.hsadminng.domain.User;
+import org.hostsharing.hsadminng.repository.UserRepository;
+import org.hibernate.validator.internal.constraintvalidators.hv.EmailValidator;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.security.core.userdetails.UsernameNotFoundException;
+import org.springframework.stereotype.Component;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+/**
+ * Authenticate a user from the database.
+ */
+@Component("userDetailsService")
+public class DomainUserDetailsService implements UserDetailsService {
+
+    private final Logger log = LoggerFactory.getLogger(DomainUserDetailsService.class);
+
+    private final UserRepository userRepository;
+
+    public DomainUserDetailsService(UserRepository userRepository) {
+        this.userRepository = userRepository;
+    }
+
+    @Override
+    @Transactional
+    public UserDetails loadUserByUsername(final String login) {
+        log.debug("Authenticating {}", login);
+
+        if (new EmailValidator().isValid(login, null)) {
+            return userRepository.findOneWithAuthoritiesByEmail(login)
+                .map(user -> createSpringSecurityUser(login, user))
+                .orElseThrow(() -> new UsernameNotFoundException("User with email " + login + " was not found in the database"));
+        }
+
+        String lowercaseLogin = login.toLowerCase(Locale.ENGLISH);
+        return userRepository.findOneWithAuthoritiesByLogin(lowercaseLogin)
+            .map(user -> createSpringSecurityUser(lowercaseLogin, user))
+            .orElseThrow(() -> new UsernameNotFoundException("User " + lowercaseLogin + " was not found in the database"));
+
+    }
+
+    private org.springframework.security.core.userdetails.User createSpringSecurityUser(String lowercaseLogin, User user) {
+        if (!user.getActivated()) {
+            throw new UserNotActivatedException("User " + lowercaseLogin + " was not activated");
+        }
+        List<GrantedAuthority> grantedAuthorities = user.getAuthorities().stream()
+            .map(authority -> new SimpleGrantedAuthority(authority.getName()))
+            .collect(Collectors.toList());
+        return new org.springframework.security.core.userdetails.User(user.getLogin(),
+            user.getPassword(),
+            grantedAuthorities);
+    }
+}

src/main/java/org/hostsharing/hsadminng/security/SecurityUtils.java

@@ -0,0 +1,76 @@
+package org.hostsharing.hsadminng.security;
+
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.core.userdetails.UserDetails;
+
+import java.util.Optional;
+
+/**
+ * Utility class for Spring Security.
+ */
+public final class SecurityUtils {
+
+    private SecurityUtils() {
+    }
+
+    /**
+     * Get the login of the current user.
+     *
+     * @return the login of the current user
+     */
+    public static Optional<String> getCurrentUserLogin() {
+        SecurityContext securityContext = SecurityContextHolder.getContext();
+        return Optional.ofNullable(securityContext.getAuthentication())
+            .map(authentication -> {
+                if (authentication.getPrincipal() instanceof UserDetails) {
+                    UserDetails springSecurityUser = (UserDetails) authentication.getPrincipal();
+                    return springSecurityUser.getUsername();
+                } else if (authentication.getPrincipal() instanceof String) {
+                    return (String) authentication.getPrincipal();
+                }
+                return null;
+            });
+    }
+
+    /**
+     * Get the JWT of the current user.
+     *
+     * @return the JWT of the current user
+     */
+    public static Optional<String> getCurrentUserJWT() {
+        SecurityContext securityContext = SecurityContextHolder.getContext();
+        return Optional.ofNullable(securityContext.getAuthentication())
+            .filter(authentication -> authentication.getCredentials() instanceof String)
+            .map(authentication -> (String) authentication.getCredentials());
+    }
+
+    /**
+     * Check if a user is authenticated.
+     *
+     * @return true if the user is authenticated, false otherwise
+     */
+    public static boolean isAuthenticated() {
+        SecurityContext securityContext = SecurityContextHolder.getContext();
+        return Optional.ofNullable(securityContext.getAuthentication())
+            .map(authentication -> authentication.getAuthorities().stream()
+                .noneMatch(grantedAuthority -> grantedAuthority.getAuthority().equals(AuthoritiesConstants.ANONYMOUS)))
+            .orElse(false);
+    }
+
+    /**
+     * If the current user has a specific authority (security role).
+     * <p>
+     * The name of this method comes from the isUserInRole() method in the Servlet API
+     *
+     * @param authority the authority to check
+     * @return true if the current user has the authority, false otherwise
+     */
+    public static boolean isCurrentUserInRole(String authority) {
+        SecurityContext securityContext = SecurityContextHolder.getContext();
+        return Optional.ofNullable(securityContext.getAuthentication())
+            .map(authentication -> authentication.getAuthorities().stream()
+                .anyMatch(grantedAuthority -> grantedAuthority.getAuthority().equals(authority)))
+            .orElse(false);
+    }
+}

src/main/java/org/hostsharing/hsadminng/security/SpringSecurityAuditorAware.java

@@ -0,0 +1,20 @@
+package org.hostsharing.hsadminng.security;
+
+import org.hostsharing.hsadminng.config.Constants;
+
+import java.util.Optional;
+
+import org.springframework.data.domain.AuditorAware;
+import org.springframework.stereotype.Component;
+
+/**
+ * Implementation of AuditorAware based on Spring Security.
+ */
+@Component
+public class SpringSecurityAuditorAware implements AuditorAware<String> {
+
+    @Override
+    public Optional<String> getCurrentAuditor() {
+        return Optional.of(SecurityUtils.getCurrentUserLogin().orElse(Constants.SYSTEM_ACCOUNT));
+    }
+}

src/main/java/org/hostsharing/hsadminng/security/UserNotActivatedException.java

@@ -0,0 +1,19 @@
+package org.hostsharing.hsadminng.security;
+
+import org.springframework.security.core.AuthenticationException;
+
+/**
+ * This exception is thrown in case of a not activated user trying to authenticate.
+ */
+public class UserNotActivatedException extends AuthenticationException {
+
+    private static final long serialVersionUID = 1L;
+
+    public UserNotActivatedException(String message) {
+        super(message);
+    }
+
+    public UserNotActivatedException(String message, Throwable t) {
+        super(message, t);
+    }
+}

src/main/java/org/hostsharing/hsadminng/security/jwt/JWTConfigurer.java

@@ -0,0 +1,21 @@
+package org.hostsharing.hsadminng.security.jwt;
+
+import org.springframework.security.config.annotation.SecurityConfigurerAdapter;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.web.DefaultSecurityFilterChain;
+import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
+
+public class JWTConfigurer extends SecurityConfigurerAdapter<DefaultSecurityFilterChain, HttpSecurity> {
+
+    private TokenProvider tokenProvider;
+
+    public JWTConfigurer(TokenProvider tokenProvider) {
+        this.tokenProvider = tokenProvider;
+    }
+
+    @Override
+    public void configure(HttpSecurity http) throws Exception {
+        JWTFilter customFilter = new JWTFilter(tokenProvider);
+        http.addFilterBefore(customFilter, UsernamePasswordAuthenticationFilter.class);
+    }
+}

src/main/java/org/hostsharing/hsadminng/security/jwt/JWTFilter.java

@@ -0,0 +1,48 @@
+package org.hostsharing.hsadminng.security.jwt;
+
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.util.StringUtils;
+import org.springframework.web.filter.GenericFilterBean;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import java.io.IOException;
+
+/**
+ * Filters incoming requests and installs a Spring Security principal if a header corresponding to a valid user is
+ * found.
+ */
+public class JWTFilter extends GenericFilterBean {
+
+    public static final String AUTHORIZATION_HEADER = "Authorization";
+
+    private TokenProvider tokenProvider;
+
+    public JWTFilter(TokenProvider tokenProvider) {
+        this.tokenProvider = tokenProvider;
+    }
+
+    @Override
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
+        throws IOException, ServletException {
+        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
+        String jwt = resolveToken(httpServletRequest);
+        if (StringUtils.hasText(jwt) && this.tokenProvider.validateToken(jwt)) {
+            Authentication authentication = this.tokenProvider.getAuthentication(jwt);
+            SecurityContextHolder.getContext().setAuthentication(authentication);
+        }
+        filterChain.doFilter(servletRequest, servletResponse);
+    }
+
+    private String resolveToken(HttpServletRequest request){
+        String bearerToken = request.getHeader(AUTHORIZATION_HEADER);
+        if (StringUtils.hasText(bearerToken) && bearerToken.startsWith("Bearer ")) {
+            return bearerToken.substring(7);
+        }
+        return null;
+    }
+}

src/main/java/org/hostsharing/hsadminng/security/jwt/TokenProvider.java

@@ -0,0 +1,119 @@
+package org.hostsharing.hsadminng.security.jwt;
+
+import java.nio.charset.StandardCharsets;
+import java.security.Key;
+import java.util.*;
+import java.util.stream.Collectors;
+import javax.annotation.PostConstruct;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.GrantedAuthority;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+import io.github.jhipster.config.JHipsterProperties;
+import io.jsonwebtoken.*;
+import io.jsonwebtoken.io.Decoders;
+import io.jsonwebtoken.security.Keys;
+
+@Component
+public class TokenProvider {
+
+    private final Logger log = LoggerFactory.getLogger(TokenProvider.class);
+
+    private static final String AUTHORITIES_KEY = "auth";
+
+    private Key key;
+
+    private long tokenValidityInMilliseconds;
+
+    private long tokenValidityInMillisecondsForRememberMe;
+
+    private final JHipsterProperties jHipsterProperties;
+
+    public TokenProvider(JHipsterProperties jHipsterProperties) {
+        this.jHipsterProperties = jHipsterProperties;
+    }
+
+    @PostConstruct
+    public void init() {
+        byte[] keyBytes;
+        String secret = jHipsterProperties.getSecurity().getAuthentication().getJwt().getSecret();
+        if (!StringUtils.isEmpty(secret)) {
+            log.warn("Warning: the JWT key used is not Base64-encoded. " +
+                "We recommend using the `jhipster.security.authentication.jwt.base64-secret` key for optimum security.");
+            keyBytes = secret.getBytes(StandardCharsets.UTF_8);
+        } else {
+            log.debug("Using a Base64-encoded JWT secret key");
+            keyBytes = Decoders.BASE64.decode(jHipsterProperties.getSecurity().getAuthentication().getJwt().getBase64Secret());
+        }
+        this.key = Keys.hmacShaKeyFor(keyBytes);
+        this.tokenValidityInMilliseconds =
+            1000 * jHipsterProperties.getSecurity().getAuthentication().getJwt().getTokenValidityInSeconds();
+        this.tokenValidityInMillisecondsForRememberMe =
+            1000 * jHipsterProperties.getSecurity().getAuthentication().getJwt()
+                .getTokenValidityInSecondsForRememberMe();
+    }
+
+    public String createToken(Authentication authentication, boolean rememberMe) {
+        String authorities = authentication.getAuthorities().stream()
+            .map(GrantedAuthority::getAuthority)
+            .collect(Collectors.joining(","));
+
+        long now = (new Date()).getTime();
+        Date validity;
+        if (rememberMe) {
+            validity = new Date(now + this.tokenValidityInMillisecondsForRememberMe);
+        } else {
+            validity = new Date(now + this.tokenValidityInMilliseconds);
+        }
+
+        return Jwts.builder()
+            .setSubject(authentication.getName())
+            .claim(AUTHORITIES_KEY, authorities)
+            .signWith(key, SignatureAlgorithm.HS512)
+            .setExpiration(validity)
+            .compact();
+    }
+
+    public Authentication getAuthentication(String token) {
+        Claims claims = Jwts.parser()
+            .setSigningKey(key)
+            .parseClaimsJws(token)
+            .getBody();
+
+        Collection<? extends GrantedAuthority> authorities =
+            Arrays.stream(claims.get(AUTHORITIES_KEY).toString().split(","))
+                .map(SimpleGrantedAuthority::new)
+                .collect(Collectors.toList());
+
+        User principal = new User(claims.getSubject(), "", authorities);
+
+        return new UsernamePasswordAuthenticationToken(principal, token, authorities);
+    }
+
+    public boolean validateToken(String authToken) {
+        try {
+            Jwts.parser().setSigningKey(key).parseClaimsJws(authToken);
+            return true;
+        } catch (io.jsonwebtoken.security.SecurityException | MalformedJwtException e) {
+            log.info("Invalid JWT signature.");
+            log.trace("Invalid JWT signature trace: {}", e);
+        } catch (ExpiredJwtException e) {
+            log.info("Expired JWT token.");
+            log.trace("Expired JWT token trace: {}", e);
+        } catch (UnsupportedJwtException e) {
+            log.info("Unsupported JWT token.");
+            log.trace("Unsupported JWT token trace: {}", e);
+        } catch (IllegalArgumentException e) {
+            log.info("JWT token compact of handler are invalid.");
+            log.trace("JWT token compact of handler are invalid trace: {}", e);
+        }
+        return false;
+    }
+}

src/main/java/org/hostsharing/hsadminng/security/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Spring Security configuration.
+ */
+package org.hostsharing.hsadminng.security;

src/main/java/org/hostsharing/hsadminng/service/AuditEventService.java

@@ -0,0 +1,51 @@
+package org.hostsharing.hsadminng.service;
+
+import org.hostsharing.hsadminng.config.audit.AuditEventConverter;
+import org.hostsharing.hsadminng.repository.PersistenceAuditEventRepository;
+import org.springframework.boot.actuate.audit.AuditEvent;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.Instant;
+import java.util.Optional;
+
+/**
+ * Service for managing audit events.
+ * <p>
+ * This is the default implementation to support SpringBoot Actuator AuditEventRepository
+ */
+@Service
+@Transactional
+public class AuditEventService {
+
+    private final PersistenceAuditEventRepository persistenceAuditEventRepository;
+
+    private final AuditEventConverter auditEventConverter;
+
+    public AuditEventService(
+        PersistenceAuditEventRepository persistenceAuditEventRepository,
+        AuditEventConverter auditEventConverter) {
+
+        this.persistenceAuditEventRepository = persistenceAuditEventRepository;
+        this.auditEventConverter = auditEventConverter;
+    }
+
+    public Page<AuditEvent> findAll(Pageable pageable) {
+        return persistenceAuditEventRepository.findAll(pageable)
+            .map(auditEventConverter::convertToAuditEvent);
+    }
+
+    public Page<AuditEvent> findByDates(Instant fromDate, Instant toDate, Pageable pageable) {
+        return persistenceAuditEventRepository.findAllByAuditEventDateBetween(fromDate, toDate, pageable)
+            .map(auditEventConverter::convertToAuditEvent);
+    }
+
+    public Optional<AuditEvent> find(Long id) {
+        return Optional.ofNullable(persistenceAuditEventRepository.findById(id))
+            .filter(Optional::isPresent)
+            .map(Optional::get)
+            .map(auditEventConverter::convertToAuditEvent);
+    }
+}

src/main/java/org/hostsharing/hsadminng/service/MailService.java

@@ -0,0 +1,105 @@
+package org.hostsharing.hsadminng.service;
+
+import org.hostsharing.hsadminng.domain.User;
+
+import io.github.jhipster.config.JHipsterProperties;
+
+import java.nio.charset.StandardCharsets;
+import java.util.Locale;
+import javax.mail.internet.MimeMessage;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.MessageSource;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.MimeMessageHelper;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Service;
+import org.thymeleaf.context.Context;
+import org.thymeleaf.spring5.SpringTemplateEngine;
+
+/**
+ * Service for sending emails.
+ * <p>
+ * We use the @Async annotation to send emails asynchronously.
+ */
+@Service
+public class MailService {
+
+    private final Logger log = LoggerFactory.getLogger(MailService.class);
+
+    private static final String USER = "user";
+
+    private static final String BASE_URL = "baseUrl";
+
+    private final JHipsterProperties jHipsterProperties;
+
+    private final JavaMailSender javaMailSender;
+
+    private final MessageSource messageSource;
+
+    private final SpringTemplateEngine templateEngine;
+
+    public MailService(JHipsterProperties jHipsterProperties, JavaMailSender javaMailSender,
+            MessageSource messageSource, SpringTemplateEngine templateEngine) {
+
+        this.jHipsterProperties = jHipsterProperties;
+        this.javaMailSender = javaMailSender;
+        this.messageSource = messageSource;
+        this.templateEngine = templateEngine;
+    }
+
+    @Async
+    public void sendEmail(String to, String subject, String content, boolean isMultipart, boolean isHtml) {
+        log.debug("Send email[multipart '{}' and html '{}'] to '{}' with subject '{}' and content={}",
+            isMultipart, isHtml, to, subject, content);
+
+        // Prepare message using a Spring helper
+        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
+        try {
+            MimeMessageHelper message = new MimeMessageHelper(mimeMessage, isMultipart, StandardCharsets.UTF_8.name());
+            message.setTo(to);
+            message.setFrom(jHipsterProperties.getMail().getFrom());
+            message.setSubject(subject);
+            message.setText(content, isHtml);
+            javaMailSender.send(mimeMessage);
+            log.debug("Sent email to User '{}'", to);
+        } catch (Exception e) {
+            if (log.isDebugEnabled()) {
+                log.warn("Email could not be sent to user '{}'", to, e);
+            } else {
+                log.warn("Email could not be sent to user '{}': {}", to, e.getMessage());
+            }
+        }
+    }
+
+    @Async
+    public void sendEmailFromTemplate(User user, String templateName, String titleKey) {
+        Locale locale = Locale.forLanguageTag(user.getLangKey());
+        Context context = new Context(locale);
+        context.setVariable(USER, user);
+        context.setVariable(BASE_URL, jHipsterProperties.getMail().getBaseUrl());
+        String content = templateEngine.process(templateName, context);
+        String subject = messageSource.getMessage(titleKey, null, locale);
+        sendEmail(user.getEmail(), subject, content, false, true);
+
+    }
+
+    @Async
+    public void sendActivationEmail(User user) {
+        log.debug("Sending activation email to '{}'", user.getEmail());
+        sendEmailFromTemplate(user, "mail/activationEmail", "email.activation.title");
+    }
+
+    @Async
+    public void sendCreationEmail(User user) {
+        log.debug("Sending creation email to '{}'", user.getEmail());
+        sendEmailFromTemplate(user, "mail/creationEmail", "email.activation.title");
+    }
+
+    @Async
+    public void sendPasswordResetMail(User user) {
+        log.debug("Sending password reset email to '{}'", user.getEmail());
+        sendEmailFromTemplate(user, "mail/passwordResetEmail", "email.reset.title");
+    }
+}

src/main/java/org/hostsharing/hsadminng/service/UserService.java

@@ -0,0 +1,294 @@
+package org.hostsharing.hsadminng.service;
+
+import org.hostsharing.hsadminng.config.Constants;
+import org.hostsharing.hsadminng.domain.Authority;
+import org.hostsharing.hsadminng.domain.User;
+import org.hostsharing.hsadminng.repository.AuthorityRepository;
+import org.hostsharing.hsadminng.repository.UserRepository;
+import org.hostsharing.hsadminng.security.AuthoritiesConstants;
+import org.hostsharing.hsadminng.security.SecurityUtils;
+import org.hostsharing.hsadminng.service.dto.UserDTO;
+import org.hostsharing.hsadminng.service.util.RandomUtil;
+import org.hostsharing.hsadminng.web.rest.errors.*;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.cache.CacheManager;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.*;
+import java.util.stream.Collectors;
+
+/**
+ * Service class for managing users.
+ */
+@Service
+@Transactional
+public class UserService {
+
+    private final Logger log = LoggerFactory.getLogger(UserService.class);
+
+    private final UserRepository userRepository;
+
+    private final PasswordEncoder passwordEncoder;
+
+    private final AuthorityRepository authorityRepository;
+
+    private final CacheManager cacheManager;
+
+    public UserService(UserRepository userRepository, PasswordEncoder passwordEncoder, AuthorityRepository authorityRepository, CacheManager cacheManager) {
+        this.userRepository = userRepository;
+        this.passwordEncoder = passwordEncoder;
+        this.authorityRepository = authorityRepository;
+        this.cacheManager = cacheManager;
+    }
+
+    public Optional<User> activateRegistration(String key) {
+        log.debug("Activating user for activation key {}", key);
+        return userRepository.findOneByActivationKey(key)
+            .map(user -> {
+                // activate given user for the registration key.
+                user.setActivated(true);
+                user.setActivationKey(null);
+                this.clearUserCaches(user);
+                log.debug("Activated user: {}", user);
+                return user;
+            });
+    }
+
+    public Optional<User> completePasswordReset(String newPassword, String key) {
+        log.debug("Reset user password for reset key {}", key);
+        return userRepository.findOneByResetKey(key)
+            .filter(user -> user.getResetDate().isAfter(Instant.now().minusSeconds(86400)))
+            .map(user -> {
+                user.setPassword(passwordEncoder.encode(newPassword));
+                user.setResetKey(null);
+                user.setResetDate(null);
+                this.clearUserCaches(user);
+                return user;
+            });
+    }
+
+    public Optional<User> requestPasswordReset(String mail) {
+        return userRepository.findOneByEmailIgnoreCase(mail)
+            .filter(User::getActivated)
+            .map(user -> {
+                user.setResetKey(RandomUtil.generateResetKey());
+                user.setResetDate(Instant.now());
+                this.clearUserCaches(user);
+                return user;
+            });
+    }
+
+    public User registerUser(UserDTO userDTO, String password) {
+        userRepository.findOneByLogin(userDTO.getLogin().toLowerCase()).ifPresent(existingUser -> {
+            boolean removed = removeNonActivatedUser(existingUser);
+            if (!removed) {
+                throw new LoginAlreadyUsedException();
+            }
+        });
+        userRepository.findOneByEmailIgnoreCase(userDTO.getEmail()).ifPresent(existingUser -> {
+            boolean removed = removeNonActivatedUser(existingUser);
+            if (!removed) {
+                throw new EmailAlreadyUsedException();
+            }
+        });
+        User newUser = new User();
+        String encryptedPassword = passwordEncoder.encode(password);
+        newUser.setLogin(userDTO.getLogin().toLowerCase());
+        // new user gets initially a generated password
+        newUser.setPassword(encryptedPassword);
+        newUser.setFirstName(userDTO.getFirstName());
+        newUser.setLastName(userDTO.getLastName());
+        newUser.setEmail(userDTO.getEmail().toLowerCase());
+        newUser.setImageUrl(userDTO.getImageUrl());
+        newUser.setLangKey(userDTO.getLangKey());
+        // new user is not active
+        newUser.setActivated(false);
+        // new user gets registration key
+        newUser.setActivationKey(RandomUtil.generateActivationKey());
+        Set<Authority> authorities = new HashSet<>();
+        authorityRepository.findById(AuthoritiesConstants.USER).ifPresent(authorities::add);
+        newUser.setAuthorities(authorities);
+        userRepository.save(newUser);
+        this.clearUserCaches(newUser);
+        log.debug("Created Information for User: {}", newUser);
+        return newUser;
+    }
+
+    private boolean removeNonActivatedUser(User existingUser){
+        if (existingUser.getActivated()) {
+             return false;
+        }
+        userRepository.delete(existingUser);
+        userRepository.flush();
+        this.clearUserCaches(existingUser);
+        return true;
+    }
+
+    public User createUser(UserDTO userDTO) {
+        User user = new User();
+        user.setLogin(userDTO.getLogin().toLowerCase());
+        user.setFirstName(userDTO.getFirstName());
+        user.setLastName(userDTO.getLastName());
+        user.setEmail(userDTO.getEmail().toLowerCase());
+        user.setImageUrl(userDTO.getImageUrl());
+        if (userDTO.getLangKey() == null) {
+            user.setLangKey(Constants.DEFAULT_LANGUAGE); // default language
+        } else {
+            user.setLangKey(userDTO.getLangKey());
+        }
+        String encryptedPassword = passwordEncoder.encode(RandomUtil.generatePassword());
+        user.setPassword(encryptedPassword);
+        user.setResetKey(RandomUtil.generateResetKey());
+        user.setResetDate(Instant.now());
+        user.setActivated(true);
+        if (userDTO.getAuthorities() != null) {
+            Set<Authority> authorities = userDTO.getAuthorities().stream()
+                .map(authorityRepository::findById)
+                .filter(Optional::isPresent)
+                .map(Optional::get)
+                .collect(Collectors.toSet());
+            user.setAuthorities(authorities);
+        }
+        userRepository.save(user);
+        this.clearUserCaches(user);
+        log.debug("Created Information for User: {}", user);
+        return user;
+    }
+
+    /**
+     * Update basic information (first name, last name, email, language) for the current user.
+     *
+     * @param firstName first name of user
+     * @param lastName last name of user
+     * @param email email id of user
+     * @param langKey language key
+     * @param imageUrl image URL of user
+     */
+    public void updateUser(String firstName, String lastName, String email, String langKey, String imageUrl) {
+        SecurityUtils.getCurrentUserLogin()
+            .flatMap(userRepository::findOneByLogin)
+            .ifPresent(user -> {
+                user.setFirstName(firstName);
+                user.setLastName(lastName);
+                user.setEmail(email.toLowerCase());
+                user.setLangKey(langKey);
+                user.setImageUrl(imageUrl);
+                this.clearUserCaches(user);
+                log.debug("Changed Information for User: {}", user);
+            });
+    }
+
+    /**
+     * Update all information for a specific user, and return the modified user.
+     *
+     * @param userDTO user to update
+     * @return updated user
+     */
+    public Optional<UserDTO> updateUser(UserDTO userDTO) {
+        return Optional.of(userRepository
+            .findById(userDTO.getId()))
+            .filter(Optional::isPresent)
+            .map(Optional::get)
+            .map(user -> {
+                this.clearUserCaches(user);
+                user.setLogin(userDTO.getLogin().toLowerCase());
+                user.setFirstName(userDTO.getFirstName());
+                user.setLastName(userDTO.getLastName());
+                user.setEmail(userDTO.getEmail().toLowerCase());
+                user.setImageUrl(userDTO.getImageUrl());
+                user.setActivated(userDTO.isActivated());
+                user.setLangKey(userDTO.getLangKey());
+                Set<Authority> managedAuthorities = user.getAuthorities();
+                managedAuthorities.clear();
+                userDTO.getAuthorities().stream()
+                    .map(authorityRepository::findById)
+                    .filter(Optional::isPresent)
+                    .map(Optional::get)
+                    .forEach(managedAuthorities::add);
+                this.clearUserCaches(user);
+                log.debug("Changed Information for User: {}", user);
+                return user;
+            })
+            .map(UserDTO::new);
+    }
+
+    public void deleteUser(String login) {
+        userRepository.findOneByLogin(login).ifPresent(user -> {
+            userRepository.delete(user);
+            this.clearUserCaches(user);
+            log.debug("Deleted User: {}", user);
+        });
+    }
+
+    public void changePassword(String currentClearTextPassword, String newPassword) {
+        SecurityUtils.getCurrentUserLogin()
+            .flatMap(userRepository::findOneByLogin)
+            .ifPresent(user -> {
+                String currentEncryptedPassword = user.getPassword();
+                if (!passwordEncoder.matches(currentClearTextPassword, currentEncryptedPassword)) {
+                    throw new InvalidPasswordException();
+                }
+                String encryptedPassword = passwordEncoder.encode(newPassword);
+                user.setPassword(encryptedPassword);
+                this.clearUserCaches(user);
+                log.debug("Changed password for User: {}", user);
+            });
+    }
+
+    @Transactional(readOnly = true)
+    public Page<UserDTO> getAllManagedUsers(Pageable pageable) {
+        return userRepository.findAllByLoginNot(pageable, Constants.ANONYMOUS_USER).map(UserDTO::new);
+    }
+
+    @Transactional(readOnly = true)
+    public Optional<User> getUserWithAuthoritiesByLogin(String login) {
+        return userRepository.findOneWithAuthoritiesByLogin(login);
+    }
+
+    @Transactional(readOnly = true)
+    public Optional<User> getUserWithAuthorities(Long id) {
+        return userRepository.findOneWithAuthoritiesById(id);
+    }
+
+    @Transactional(readOnly = true)
+    public Optional<User> getUserWithAuthorities() {
+        return SecurityUtils.getCurrentUserLogin().flatMap(userRepository::findOneWithAuthoritiesByLogin);
+    }
+
+    /**
+     * Not activated users should be automatically deleted after 3 days.
+     * <p>
+     * This is scheduled to get fired everyday, at 01:00 (am).
+     */
+    @Scheduled(cron = "0 0 1 * * ?")
+    public void removeNotActivatedUsers() {
+        userRepository
+            .findAllByActivatedIsFalseAndCreatedDateBefore(Instant.now().minus(3, ChronoUnit.DAYS))
+            .forEach(user -> {
+                log.debug("Deleting not activated user {}", user.getLogin());
+                userRepository.delete(user);
+                this.clearUserCaches(user);
+            });
+    }
+
+    /**
+     * @return a list of all the authorities
+     */
+    public List<String> getAuthorities() {
+        return authorityRepository.findAll().stream().map(Authority::getName).collect(Collectors.toList());
+    }
+
+    private void clearUserCaches(User user) {
+        Objects.requireNonNull(cacheManager.getCache(UserRepository.USERS_BY_LOGIN_CACHE)).evict(user.getLogin());
+        Objects.requireNonNull(cacheManager.getCache(UserRepository.USERS_BY_EMAIL_CACHE)).evict(user.getEmail());
+    }
+}

src/main/java/org/hostsharing/hsadminng/service/dto/PasswordChangeDTO.java

@@ -0,0 +1,35 @@
+package org.hostsharing.hsadminng.service.dto;
+
+/**
+ * A DTO representing a password change required data - current and new password.
+ */
+public class PasswordChangeDTO {
+    private String currentPassword;
+    private String newPassword;
+
+    public PasswordChangeDTO() {
+        // Empty constructor needed for Jackson.
+    }
+
+    public PasswordChangeDTO(String currentPassword, String newPassword) {
+        this.currentPassword = currentPassword;
+        this.newPassword = newPassword;
+    }
+
+    public String getCurrentPassword() {
+
+        return currentPassword;
+    }
+
+    public void setCurrentPassword(String currentPassword) {
+        this.currentPassword = currentPassword;
+    }
+
+    public String getNewPassword() {
+        return newPassword;
+    }
+
+    public void setNewPassword(String newPassword) {
+        this.newPassword = newPassword;
+    }
+}

src/main/java/org/hostsharing/hsadminng/service/dto/UserDTO.java

@@ -0,0 +1,199 @@
+package org.hostsharing.hsadminng.service.dto;
+
+import org.hostsharing.hsadminng.config.Constants;
+
+import org.hostsharing.hsadminng.domain.Authority;
+import org.hostsharing.hsadminng.domain.User;
+
+import javax.validation.constraints.Email;
+import javax.validation.constraints.NotBlank;
+
+import javax.validation.constraints.*;
+import java.time.Instant;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+/**
+ * A DTO representing a user, with his authorities.
+ */
+public class UserDTO {
+
+    private Long id;
+
+    @NotBlank
+    @Pattern(regexp = Constants.LOGIN_REGEX)
+    @Size(min = 1, max = 50)
+    private String login;
+
+    @Size(max = 50)
+    private String firstName;
+
+    @Size(max = 50)
+    private String lastName;
+
+    @Email
+    @Size(min = 5, max = 254)
+    private String email;
+
+    @Size(max = 256)
+    private String imageUrl;
+
+    private boolean activated = false;
+
+    @Size(min = 2, max = 6)
+    private String langKey;
+
+    private String createdBy;
+
+    private Instant createdDate;
+
+    private String lastModifiedBy;
+
+    private Instant lastModifiedDate;
+
+    private Set<String> authorities;
+
+    public UserDTO() {
+        // Empty constructor needed for Jackson.
+    }
+
+    public UserDTO(User user) {
+        this.id = user.getId();
+        this.login = user.getLogin();
+        this.firstName = user.getFirstName();
+        this.lastName = user.getLastName();
+        this.email = user.getEmail();
+        this.activated = user.getActivated();
+        this.imageUrl = user.getImageUrl();
+        this.langKey = user.getLangKey();
+        this.createdBy = user.getCreatedBy();
+        this.createdDate = user.getCreatedDate();
+        this.lastModifiedBy = user.getLastModifiedBy();
+        this.lastModifiedDate = user.getLastModifiedDate();
+        this.authorities = user.getAuthorities().stream()
+            .map(Authority::getName)
+            .collect(Collectors.toSet());
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getLogin() {
+        return login;
+    }
+
+    public void setLogin(String login) {
+        this.login = login;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public String getImageUrl() {
+        return imageUrl;
+    }
+
+    public void setImageUrl(String imageUrl) {
+        this.imageUrl = imageUrl;
+    }
+
+    public boolean isActivated() {
+        return activated;
+    }
+
+    public void setActivated(boolean activated) {
+        this.activated = activated;
+    }
+
+    public String getLangKey() {
+        return langKey;
+    }
+
+    public void setLangKey(String langKey) {
+        this.langKey = langKey;
+    }
+
+    public String getCreatedBy() {
+        return createdBy;
+    }
+
+    public void setCreatedBy(String createdBy) {
+        this.createdBy = createdBy;
+    }
+
+    public Instant getCreatedDate() {
+        return createdDate;
+    }
+
+    public void setCreatedDate(Instant createdDate) {
+        this.createdDate = createdDate;
+    }
+
+    public String getLastModifiedBy() {
+        return lastModifiedBy;
+    }
+
+    public void setLastModifiedBy(String lastModifiedBy) {
+        this.lastModifiedBy = lastModifiedBy;
+    }
+
+    public Instant getLastModifiedDate() {
+        return lastModifiedDate;
+    }
+
+    public void setLastModifiedDate(Instant lastModifiedDate) {
+        this.lastModifiedDate = lastModifiedDate;
+    }
+
+    public Set<String> getAuthorities() {
+        return authorities;
+    }
+
+    public void setAuthorities(Set<String> authorities) {
+        this.authorities = authorities;
+    }
+
+    @Override
+    public String toString() {
+        return "UserDTO{" +
+            "login='" + login + '\'' +
+            ", firstName='" + firstName + '\'' +
+            ", lastName='" + lastName + '\'' +
+            ", email='" + email + '\'' +
+            ", imageUrl='" + imageUrl + '\'' +
+            ", activated=" + activated +
+            ", langKey='" + langKey + '\'' +
+            ", createdBy=" + createdBy +
+            ", createdDate=" + createdDate +
+            ", lastModifiedBy='" + lastModifiedBy + '\'' +
+            ", lastModifiedDate=" + lastModifiedDate +
+            ", authorities=" + authorities +
+            "}";
+    }
+}

src/main/java/org/hostsharing/hsadminng/service/dto/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Data Transfer Objects.
+ */
+package org.hostsharing.hsadminng.service.dto;

src/main/java/org/hostsharing/hsadminng/service/mapper/UserMapper.java

@@ -0,0 +1,81 @@
+package org.hostsharing.hsadminng.service.mapper;
+
+import org.hostsharing.hsadminng.domain.Authority;
+import org.hostsharing.hsadminng.domain.User;
+import org.hostsharing.hsadminng.service.dto.UserDTO;
+
+import org.springframework.stereotype.Service;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+/**
+ * Mapper for the entity User and its DTO called UserDTO.
+ *
+ * Normal mappers are generated using MapStruct, this one is hand-coded as MapStruct
+ * support is still in beta, and requires a manual step with an IDE.
+ */
+@Service
+public class UserMapper {
+
+    public List<UserDTO> usersToUserDTOs(List<User> users) {
+        return users.stream()
+            .filter(Objects::nonNull)
+            .map(this::userToUserDTO)
+            .collect(Collectors.toList());
+    }
+
+    public UserDTO userToUserDTO(User user) {
+        return new UserDTO(user);
+    }
+
+    public List<User> userDTOsToUsers(List<UserDTO> userDTOs) {
+        return userDTOs.stream()
+            .filter(Objects::nonNull)
+            .map(this::userDTOToUser)
+            .collect(Collectors.toList());
+    }
+
+    public User userDTOToUser(UserDTO userDTO) {
+        if (userDTO == null) {
+            return null;
+        } else {
+            User user = new User();
+            user.setId(userDTO.getId());
+            user.setLogin(userDTO.getLogin());
+            user.setFirstName(userDTO.getFirstName());
+            user.setLastName(userDTO.getLastName());
+            user.setEmail(userDTO.getEmail());
+            user.setImageUrl(userDTO.getImageUrl());
+            user.setActivated(userDTO.isActivated());
+            user.setLangKey(userDTO.getLangKey());
+            Set<Authority> authorities = this.authoritiesFromStrings(userDTO.getAuthorities());
+            user.setAuthorities(authorities);
+            return user;
+        }
+    }
+
+
+    private Set<Authority> authoritiesFromStrings(Set<String> authoritiesAsString) {
+        Set<Authority> authorities = new HashSet<>();
+
+        if(authoritiesAsString != null){
+            authorities = authoritiesAsString.stream().map(string -> {
+                Authority auth = new Authority();
+                auth.setName(string);
+                return auth;
+            }).collect(Collectors.toSet());
+        }
+
+        return authorities;
+    }
+
+    public User userFromId(Long id) {
+        if (id == null) {
+            return null;
+        }
+        User user = new User();
+        user.setId(id);
+        return user;
+    }
+}

src/main/java/org/hostsharing/hsadminng/service/mapper/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * MapStruct mappers for mapping domain objects and Data Transfer Objects.
+ */
+package org.hostsharing.hsadminng.service.mapper;

src/main/java/org/hostsharing/hsadminng/service/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Service layer beans.
+ */
+package org.hostsharing.hsadminng.service;

src/main/java/org/hostsharing/hsadminng/service/util/RandomUtil.java

@@ -0,0 +1,41 @@
+package org.hostsharing.hsadminng.service.util;
+
+import org.apache.commons.lang3.RandomStringUtils;
+
+/**
+ * Utility class for generating random Strings.
+ */
+public final class RandomUtil {
+
+    private static final int DEF_COUNT = 20;
+
+    private RandomUtil() {
+    }
+
+    /**
+     * Generate a password.
+     *
+     * @return the generated password
+     */
+    public static String generatePassword() {
+        return RandomStringUtils.randomAlphanumeric(DEF_COUNT);
+    }
+
+    /**
+     * Generate an activation key.
+     *
+     * @return the generated activation key
+     */
+    public static String generateActivationKey() {
+        return RandomStringUtils.randomNumeric(DEF_COUNT);
+    }
+
+    /**
+     * Generate a reset key.
+     *
+     * @return the generated reset key
+     */
+    public static String generateResetKey() {
+        return RandomStringUtils.randomNumeric(DEF_COUNT);
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/AccountResource.java

@@ -0,0 +1,179 @@
+package org.hostsharing.hsadminng.web.rest;
+
+
+import org.hostsharing.hsadminng.domain.User;
+import org.hostsharing.hsadminng.repository.UserRepository;
+import org.hostsharing.hsadminng.security.SecurityUtils;
+import org.hostsharing.hsadminng.service.MailService;
+import org.hostsharing.hsadminng.service.UserService;
+import org.hostsharing.hsadminng.service.dto.PasswordChangeDTO;
+import org.hostsharing.hsadminng.service.dto.UserDTO;
+import org.hostsharing.hsadminng.web.rest.errors.*;
+import org.hostsharing.hsadminng.web.rest.vm.KeyAndPasswordVM;
+import org.hostsharing.hsadminng.web.rest.vm.ManagedUserVM;
+
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.validation.Valid;
+import java.util.*;
+
+/**
+ * REST controller for managing the current user's account.
+ */
+@RestController
+@RequestMapping("/api")
+public class AccountResource {
+
+    private final Logger log = LoggerFactory.getLogger(AccountResource.class);
+
+    private final UserRepository userRepository;
+
+    private final UserService userService;
+
+    private final MailService mailService;
+
+    public AccountResource(UserRepository userRepository, UserService userService, MailService mailService) {
+
+        this.userRepository = userRepository;
+        this.userService = userService;
+        this.mailService = mailService;
+    }
+
+    /**
+     * POST  /register : register the user.
+     *
+     * @param managedUserVM the managed user View Model
+     * @throws InvalidPasswordException 400 (Bad Request) if the password is incorrect
+     * @throws EmailAlreadyUsedException 400 (Bad Request) if the email is already used
+     * @throws LoginAlreadyUsedException 400 (Bad Request) if the login is already used
+     */
+    @PostMapping("/register")
+    @ResponseStatus(HttpStatus.CREATED)
+    public void registerAccount(@Valid @RequestBody ManagedUserVM managedUserVM) {
+        if (!checkPasswordLength(managedUserVM.getPassword())) {
+            throw new InvalidPasswordException();
+        }
+        User user = userService.registerUser(managedUserVM, managedUserVM.getPassword());
+        mailService.sendActivationEmail(user);
+    }
+
+    /**
+     * GET  /activate : activate the registered user.
+     *
+     * @param key the activation key
+     * @throws RuntimeException 500 (Internal Server Error) if the user couldn't be activated
+     */
+    @GetMapping("/activate")
+    public void activateAccount(@RequestParam(value = "key") String key) {
+        Optional<User> user = userService.activateRegistration(key);
+        if (!user.isPresent()) {
+            throw new InternalServerErrorException("No user was found for this activation key");
+        }
+    }
+
+    /**
+     * GET  /authenticate : check if the user is authenticated, and return its login.
+     *
+     * @param request the HTTP request
+     * @return the login if the user is authenticated
+     */
+    @GetMapping("/authenticate")
+    public String isAuthenticated(HttpServletRequest request) {
+        log.debug("REST request to check if the current user is authenticated");
+        return request.getRemoteUser();
+    }
+
+    /**
+     * GET  /account : get the current user.
+     *
+     * @return the current user
+     * @throws RuntimeException 500 (Internal Server Error) if the user couldn't be returned
+     */
+    @GetMapping("/account")
+    public UserDTO getAccount() {
+        return userService.getUserWithAuthorities()
+            .map(UserDTO::new)
+            .orElseThrow(() -> new InternalServerErrorException("User could not be found"));
+    }
+
+    /**
+     * POST  /account : update the current user information.
+     *
+     * @param userDTO the current user information
+     * @throws EmailAlreadyUsedException 400 (Bad Request) if the email is already used
+     * @throws RuntimeException 500 (Internal Server Error) if the user login wasn't found
+     */
+    @PostMapping("/account")
+    public void saveAccount(@Valid @RequestBody UserDTO userDTO) {
+        String userLogin = SecurityUtils.getCurrentUserLogin().orElseThrow(() -> new InternalServerErrorException("Current user login not found"));
+        Optional<User> existingUser = userRepository.findOneByEmailIgnoreCase(userDTO.getEmail());
+        if (existingUser.isPresent() && (!existingUser.get().getLogin().equalsIgnoreCase(userLogin))) {
+            throw new EmailAlreadyUsedException();
+        }
+        Optional<User> user = userRepository.findOneByLogin(userLogin);
+        if (!user.isPresent()) {
+            throw new InternalServerErrorException("User could not be found");
+        }
+        userService.updateUser(userDTO.getFirstName(), userDTO.getLastName(), userDTO.getEmail(),
+            userDTO.getLangKey(), userDTO.getImageUrl());
+    }
+
+    /**
+     * POST  /account/change-password : changes the current user's password
+     *
+     * @param passwordChangeDto current and new password
+     * @throws InvalidPasswordException 400 (Bad Request) if the new password is incorrect
+     */
+    @PostMapping(path = "/account/change-password")
+    public void changePassword(@RequestBody PasswordChangeDTO passwordChangeDto) {
+        if (!checkPasswordLength(passwordChangeDto.getNewPassword())) {
+            throw new InvalidPasswordException();
+        }
+        userService.changePassword(passwordChangeDto.getCurrentPassword(), passwordChangeDto.getNewPassword());
+    }
+
+    /**
+     * POST   /account/reset-password/init : Send an email to reset the password of the user
+     *
+     * @param mail the mail of the user
+     * @throws EmailNotFoundException 400 (Bad Request) if the email address is not registered
+     */
+    @PostMapping(path = "/account/reset-password/init")
+    public void requestPasswordReset(@RequestBody String mail) {
+       mailService.sendPasswordResetMail(
+           userService.requestPasswordReset(mail)
+               .orElseThrow(EmailNotFoundException::new)
+       );
+    }
+
+    /**
+     * POST   /account/reset-password/finish : Finish to reset the password of the user
+     *
+     * @param keyAndPassword the generated key and the new password
+     * @throws InvalidPasswordException 400 (Bad Request) if the password is incorrect
+     * @throws RuntimeException 500 (Internal Server Error) if the password could not be reset
+     */
+    @PostMapping(path = "/account/reset-password/finish")
+    public void finishPasswordReset(@RequestBody KeyAndPasswordVM keyAndPassword) {
+        if (!checkPasswordLength(keyAndPassword.getNewPassword())) {
+            throw new InvalidPasswordException();
+        }
+        Optional<User> user =
+            userService.completePasswordReset(keyAndPassword.getNewPassword(), keyAndPassword.getKey());
+
+        if (!user.isPresent()) {
+            throw new InternalServerErrorException("No user was found for this reset key");
+        }
+    }
+
+    private static boolean checkPasswordLength(String password) {
+        return !StringUtils.isEmpty(password) &&
+            password.length() >= ManagedUserVM.PASSWORD_MIN_LENGTH &&
+            password.length() <= ManagedUserVM.PASSWORD_MAX_LENGTH;
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/AuditResource.java

@@ -0,0 +1,77 @@
+package org.hostsharing.hsadminng.web.rest;
+
+import org.hostsharing.hsadminng.service.AuditEventService;
+import org.hostsharing.hsadminng.web.rest.util.PaginationUtil;
+
+import io.github.jhipster.web.util.ResponseUtil;
+import org.springframework.boot.actuate.audit.AuditEvent;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.time.LocalDate;
+import java.time.ZoneId;
+import java.util.List;
+
+/**
+ * REST controller for getting the audit events.
+ */
+@RestController
+@RequestMapping("/management/audits")
+public class AuditResource {
+
+    private final AuditEventService auditEventService;
+
+    public AuditResource(AuditEventService auditEventService) {
+        this.auditEventService = auditEventService;
+    }
+
+    /**
+     * GET /audits : get a page of AuditEvents.
+     *
+     * @param pageable the pagination information
+     * @return the ResponseEntity with status 200 (OK) and the list of AuditEvents in body
+     */
+    @GetMapping
+    public ResponseEntity<List<AuditEvent>> getAll(Pageable pageable) {
+        Page<AuditEvent> page = auditEventService.findAll(pageable);
+        HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(page, "/management/audits");
+        return new ResponseEntity<>(page.getContent(), headers, HttpStatus.OK);
+    }
+
+    /**
+     * GET  /audits : get a page of AuditEvents between the fromDate and toDate.
+     *
+     * @param fromDate the start of the time period of AuditEvents to get
+     * @param toDate the end of the time period of AuditEvents to get
+     * @param pageable the pagination information
+     * @return the ResponseEntity with status 200 (OK) and the list of AuditEvents in body
+     */
+    @GetMapping(params = {"fromDate", "toDate"})
+    public ResponseEntity<List<AuditEvent>> getByDates(
+        @RequestParam(value = "fromDate") LocalDate fromDate,
+        @RequestParam(value = "toDate") LocalDate toDate,
+        Pageable pageable) {
+
+        Page<AuditEvent> page = auditEventService.findByDates(
+            fromDate.atStartOfDay(ZoneId.systemDefault()).toInstant(),
+            toDate.atStartOfDay(ZoneId.systemDefault()).plusDays(1).toInstant(),
+            pageable);
+        HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(page, "/management/audits");
+        return new ResponseEntity<>(page.getContent(), headers, HttpStatus.OK);
+    }
+
+    /**
+     * GET  /audits/:id : get an AuditEvent by id.
+     *
+     * @param id the id of the entity to get
+     * @return the ResponseEntity with status 200 (OK) and the AuditEvent in body, or status 404 (Not Found)
+     */
+    @GetMapping("/{id:.+}")
+    public ResponseEntity<AuditEvent> get(@PathVariable Long id) {
+        return ResponseUtil.wrapOrNotFound(auditEventService.find(id));
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/LogsResource.java

@@ -0,0 +1,36 @@
+package org.hostsharing.hsadminng.web.rest;
+
+import org.hostsharing.hsadminng.web.rest.vm.LoggerVM;
+
+import ch.qos.logback.classic.Level;
+import ch.qos.logback.classic.LoggerContext;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * Controller for view and managing Log Level at runtime.
+ */
+@RestController
+@RequestMapping("/management")
+public class LogsResource {
+
+    @GetMapping("/logs")
+    public List<LoggerVM> getList() {
+        LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
+        return context.getLoggerList()
+            .stream()
+            .map(LoggerVM::new)
+            .collect(Collectors.toList());
+    }
+
+    @PutMapping("/logs")
+    @ResponseStatus(HttpStatus.NO_CONTENT)
+    public void changeLevel(@RequestBody LoggerVM jsonLogger) {
+        LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();
+        context.getLogger(jsonLogger.getName()).setLevel(Level.valueOf(jsonLogger.getLevel()));
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/UserJWTController.java

@@ -0,0 +1,71 @@
+package org.hostsharing.hsadminng.web.rest;
+
+import org.hostsharing.hsadminng.security.jwt.JWTFilter;
+import org.hostsharing.hsadminng.security.jwt.TokenProvider;
+import org.hostsharing.hsadminng.web.rest.vm.LoginVM;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.Valid;
+
+/**
+ * Controller to authenticate users.
+ */
+@RestController
+@RequestMapping("/api")
+public class UserJWTController {
+
+    private final TokenProvider tokenProvider;
+
+    private final AuthenticationManager authenticationManager;
+
+    public UserJWTController(TokenProvider tokenProvider, AuthenticationManager authenticationManager) {
+        this.tokenProvider = tokenProvider;
+        this.authenticationManager = authenticationManager;
+    }
+
+    @PostMapping("/authenticate")
+    public ResponseEntity<JWTToken> authorize(@Valid @RequestBody LoginVM loginVM) {
+
+        UsernamePasswordAuthenticationToken authenticationToken =
+            new UsernamePasswordAuthenticationToken(loginVM.getUsername(), loginVM.getPassword());
+
+        Authentication authentication = this.authenticationManager.authenticate(authenticationToken);
+        SecurityContextHolder.getContext().setAuthentication(authentication);
+        boolean rememberMe = (loginVM.isRememberMe() == null) ? false : loginVM.isRememberMe();
+        String jwt = tokenProvider.createToken(authentication, rememberMe);
+        HttpHeaders httpHeaders = new HttpHeaders();
+        httpHeaders.add(JWTFilter.AUTHORIZATION_HEADER, "Bearer " + jwt);
+        return new ResponseEntity<>(new JWTToken(jwt), httpHeaders, HttpStatus.OK);
+    }
+
+    /**
+     * Object to return as body in JWT Authentication.
+     */
+    static class JWTToken {
+
+        private String idToken;
+
+        JWTToken(String idToken) {
+            this.idToken = idToken;
+        }
+
+        @JsonProperty("id_token")
+        String getIdToken() {
+            return idToken;
+        }
+
+        void setIdToken(String idToken) {
+            this.idToken = idToken;
+        }
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/UserResource.java

@@ -0,0 +1,183 @@
+package org.hostsharing.hsadminng.web.rest;
+
+import org.hostsharing.hsadminng.config.Constants;
+import org.hostsharing.hsadminng.domain.User;
+import org.hostsharing.hsadminng.repository.UserRepository;
+import org.hostsharing.hsadminng.security.AuthoritiesConstants;
+import org.hostsharing.hsadminng.service.MailService;
+import org.hostsharing.hsadminng.service.UserService;
+import org.hostsharing.hsadminng.service.dto.UserDTO;
+import org.hostsharing.hsadminng.web.rest.errors.BadRequestAlertException;
+import org.hostsharing.hsadminng.web.rest.errors.EmailAlreadyUsedException;
+import org.hostsharing.hsadminng.web.rest.errors.LoginAlreadyUsedException;
+import org.hostsharing.hsadminng.web.rest.util.HeaderUtil;
+import org.hostsharing.hsadminng.web.rest.util.PaginationUtil;
+import io.github.jhipster.web.util.ResponseUtil;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.Valid;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.*;
+
+/**
+ * REST controller for managing users.
+ * <p>
+ * This class accesses the User entity, and needs to fetch its collection of authorities.
+ * <p>
+ * For a normal use-case, it would be better to have an eager relationship between User and Authority,
+ * and send everything to the client side: there would be no View Model and DTO, a lot less code, and an outer-join
+ * which would be good for performance.
+ * <p>
+ * We use a View Model and a DTO for 3 reasons:
+ * <ul>
+ * <li>We want to keep a lazy association between the user and the authorities, because people will
+ * quite often do relationships with the user, and we don't want them to get the authorities all
+ * the time for nothing (for performance reasons). This is the #1 goal: we should not impact our users'
+ * application because of this use-case.</li>
+ * <li> Not having an outer join causes n+1 requests to the database. This is not a real issue as
+ * we have by default a second-level cache. This means on the first HTTP call we do the n+1 requests,
+ * but then all authorities come from the cache, so in fact it's much better than doing an outer join
+ * (which will get lots of data from the database, for each HTTP call).</li>
+ * <li> As this manages users, for security reasons, we'd rather have a DTO layer.</li>
+ * </ul>
+ * <p>
+ * Another option would be to have a specific JPA entity graph to handle this case.
+ */
+@RestController
+@RequestMapping("/api")
+public class UserResource {
+
+    private final Logger log = LoggerFactory.getLogger(UserResource.class);
+
+    private final UserService userService;
+
+    private final UserRepository userRepository;
+
+    private final MailService mailService;
+
+    public UserResource(UserService userService, UserRepository userRepository, MailService mailService) {
+
+        this.userService = userService;
+        this.userRepository = userRepository;
+        this.mailService = mailService;
+    }
+
+    /**
+     * POST  /users  : Creates a new user.
+     * <p>
+     * Creates a new user if the login and email are not already used, and sends an
+     * mail with an activation link.
+     * The user needs to be activated on creation.
+     *
+     * @param userDTO the user to create
+     * @return the ResponseEntity with status 201 (Created) and with body the new user, or with status 400 (Bad Request) if the login or email is already in use
+     * @throws URISyntaxException if the Location URI syntax is incorrect
+     * @throws BadRequestAlertException 400 (Bad Request) if the login or email is already in use
+     */
+    @PostMapping("/users")
+    @PreAuthorize("hasRole(\"" + AuthoritiesConstants.ADMIN + "\")")
+    public ResponseEntity<User> createUser(@Valid @RequestBody UserDTO userDTO) throws URISyntaxException {
+        log.debug("REST request to save User : {}", userDTO);
+
+        if (userDTO.getId() != null) {
+            throw new BadRequestAlertException("A new user cannot already have an ID", "userManagement", "idexists");
+            // Lowercase the user login before comparing with database
+        } else if (userRepository.findOneByLogin(userDTO.getLogin().toLowerCase()).isPresent()) {
+            throw new LoginAlreadyUsedException();
+        } else if (userRepository.findOneByEmailIgnoreCase(userDTO.getEmail()).isPresent()) {
+            throw new EmailAlreadyUsedException();
+        } else {
+            User newUser = userService.createUser(userDTO);
+            mailService.sendCreationEmail(newUser);
+            return ResponseEntity.created(new URI("/api/users/" + newUser.getLogin()))
+                .headers(HeaderUtil.createAlert( "userManagement.created", newUser.getLogin()))
+                .body(newUser);
+        }
+    }
+
+    /**
+     * PUT /users : Updates an existing User.
+     *
+     * @param userDTO the user to update
+     * @return the ResponseEntity with status 200 (OK) and with body the updated user
+     * @throws EmailAlreadyUsedException 400 (Bad Request) if the email is already in use
+     * @throws LoginAlreadyUsedException 400 (Bad Request) if the login is already in use
+     */
+    @PutMapping("/users")
+    @PreAuthorize("hasRole(\"" + AuthoritiesConstants.ADMIN + "\")")
+    public ResponseEntity<UserDTO> updateUser(@Valid @RequestBody UserDTO userDTO) {
+        log.debug("REST request to update User : {}", userDTO);
+        Optional<User> existingUser = userRepository.findOneByEmailIgnoreCase(userDTO.getEmail());
+        if (existingUser.isPresent() && (!existingUser.get().getId().equals(userDTO.getId()))) {
+            throw new EmailAlreadyUsedException();
+        }
+        existingUser = userRepository.findOneByLogin(userDTO.getLogin().toLowerCase());
+        if (existingUser.isPresent() && (!existingUser.get().getId().equals(userDTO.getId()))) {
+            throw new LoginAlreadyUsedException();
+        }
+        Optional<UserDTO> updatedUser = userService.updateUser(userDTO);
+
+        return ResponseUtil.wrapOrNotFound(updatedUser,
+            HeaderUtil.createAlert("userManagement.updated", userDTO.getLogin()));
+    }
+
+    /**
+     * GET /users : get all users.
+     *
+     * @param pageable the pagination information
+     * @return the ResponseEntity with status 200 (OK) and with body all users
+     */
+    @GetMapping("/users")
+    public ResponseEntity<List<UserDTO>> getAllUsers(Pageable pageable) {
+        final Page<UserDTO> page = userService.getAllManagedUsers(pageable);
+        HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(page, "/api/users");
+        return new ResponseEntity<>(page.getContent(), headers, HttpStatus.OK);
+    }
+
+    /**
+     * @return a string list of the all of the roles
+     */
+    @GetMapping("/users/authorities")
+    @PreAuthorize("hasRole(\"" + AuthoritiesConstants.ADMIN + "\")")
+    public List<String> getAuthorities() {
+        return userService.getAuthorities();
+    }
+
+    /**
+     * GET /users/:login : get the "login" user.
+     *
+     * @param login the login of the user to find
+     * @return the ResponseEntity with status 200 (OK) and with body the "login" user, or with status 404 (Not Found)
+     */
+    @GetMapping("/users/{login:" + Constants.LOGIN_REGEX + "}")
+    public ResponseEntity<UserDTO> getUser(@PathVariable String login) {
+        log.debug("REST request to get User : {}", login);
+        return ResponseUtil.wrapOrNotFound(
+            userService.getUserWithAuthoritiesByLogin(login)
+                .map(UserDTO::new));
+    }
+
+    /**
+     * DELETE /users/:login : delete the "login" User.
+     *
+     * @param login the login of the user to delete
+     * @return the ResponseEntity with status 200 (OK)
+     */
+    @DeleteMapping("/users/{login:" + Constants.LOGIN_REGEX + "}")
+    @PreAuthorize("hasRole(\"" + AuthoritiesConstants.ADMIN + "\")")
+    public ResponseEntity<Void> deleteUser(@PathVariable String login) {
+        log.debug("REST request to delete User: {}", login);
+        userService.deleteUser(login);
+        return ResponseEntity.ok().headers(HeaderUtil.createAlert( "userManagement.deleted", login)).build();
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/BadRequestAlertException.java

@@ -0,0 +1,42 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+import org.zalando.problem.AbstractThrowableProblem;
+import org.zalando.problem.Status;
+
+import java.net.URI;
+import java.util.HashMap;
+import java.util.Map;
+
+public class BadRequestAlertException extends AbstractThrowableProblem {
+
+    private static final long serialVersionUID = 1L;
+
+    private final String entityName;
+
+    private final String errorKey;
+
+    public BadRequestAlertException(String defaultMessage, String entityName, String errorKey) {
+        this(ErrorConstants.DEFAULT_TYPE, defaultMessage, entityName, errorKey);
+    }
+
+    public BadRequestAlertException(URI type, String defaultMessage, String entityName, String errorKey) {
+        super(type, defaultMessage, Status.BAD_REQUEST, null, null, null, getAlertParameters(entityName, errorKey));
+        this.entityName = entityName;
+        this.errorKey = errorKey;
+    }
+
+    public String getEntityName() {
+        return entityName;
+    }
+
+    public String getErrorKey() {
+        return errorKey;
+    }
+
+    private static Map<String, Object> getAlertParameters(String entityName, String errorKey) {
+        Map<String, Object> parameters = new HashMap<>();
+        parameters.put("message", "error." + errorKey);
+        parameters.put("params", entityName);
+        return parameters;
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/CustomParameterizedException.java

@@ -0,0 +1,54 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+import org.zalando.problem.AbstractThrowableProblem;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.zalando.problem.Status.BAD_REQUEST;
+
+/**
+ * Custom, parameterized exception, which can be translated on the client side.
+ * For example:
+ *
+ * <pre>
+ * throw new CustomParameterizedException(&quot;myCustomError&quot;, &quot;hello&quot;, &quot;world&quot;);
+ * </pre>
+ *
+ * Can be translated with:
+ *
+ * <pre>
+ * "error.myCustomError" :  "The server says {{param0}} to {{param1}}"
+ * </pre>
+ */
+public class CustomParameterizedException extends AbstractThrowableProblem {
+
+    private static final long serialVersionUID = 1L;
+
+    private static final String PARAM = "param";
+
+    public CustomParameterizedException(String message, String... params) {
+        this(message, toParamMap(params));
+    }
+
+    public CustomParameterizedException(String message, Map<String, Object> paramMap) {
+        super(ErrorConstants.PARAMETERIZED_TYPE, "Parameterized Exception", BAD_REQUEST, null, null, null, toProblemParameters(message, paramMap));
+    }
+
+    public static Map<String, Object> toParamMap(String... params) {
+        Map<String, Object> paramMap = new HashMap<>();
+        if (params != null && params.length > 0) {
+            for (int i = 0; i < params.length; i++) {
+                paramMap.put(PARAM + i, params[i]);
+            }
+        }
+        return paramMap;
+    }
+
+    public static Map<String, Object> toProblemParameters(String message, Map<String, Object> paramMap) {
+        Map<String, Object> parameters = new HashMap<>();
+        parameters.put("message", message);
+        parameters.put("params", paramMap);
+        return parameters;
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/EmailAlreadyUsedException.java

@@ -0,0 +1,10 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+public class EmailAlreadyUsedException extends BadRequestAlertException {
+
+    private static final long serialVersionUID = 1L;
+
+    public EmailAlreadyUsedException() {
+        super(ErrorConstants.EMAIL_ALREADY_USED_TYPE, "Email is already in use!", "userManagement", "emailexists");
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/EmailNotFoundException.java

@@ -0,0 +1,13 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+import org.zalando.problem.AbstractThrowableProblem;
+import org.zalando.problem.Status;
+
+public class EmailNotFoundException extends AbstractThrowableProblem {
+
+    private static final long serialVersionUID = 1L;
+
+    public EmailNotFoundException() {
+        super(ErrorConstants.EMAIL_NOT_FOUND_TYPE, "Email address not registered", Status.BAD_REQUEST);
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/ErrorConstants.java

@@ -0,0 +1,21 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+import java.net.URI;
+
+public final class ErrorConstants {
+
+    public static final String ERR_CONCURRENCY_FAILURE = "error.concurrencyFailure";
+    public static final String ERR_VALIDATION = "error.validation";
+    public static final String PROBLEM_BASE_URL = "https://www.jhipster.tech/problem";
+    public static final URI DEFAULT_TYPE = URI.create(PROBLEM_BASE_URL + "/problem-with-message");
+    public static final URI CONSTRAINT_VIOLATION_TYPE = URI.create(PROBLEM_BASE_URL + "/constraint-violation");
+    public static final URI PARAMETERIZED_TYPE = URI.create(PROBLEM_BASE_URL + "/parameterized");
+    public static final URI ENTITY_NOT_FOUND_TYPE = URI.create(PROBLEM_BASE_URL + "/entity-not-found");
+    public static final URI INVALID_PASSWORD_TYPE = URI.create(PROBLEM_BASE_URL + "/invalid-password");
+    public static final URI EMAIL_ALREADY_USED_TYPE = URI.create(PROBLEM_BASE_URL + "/email-already-used");
+    public static final URI LOGIN_ALREADY_USED_TYPE = URI.create(PROBLEM_BASE_URL + "/login-already-used");
+    public static final URI EMAIL_NOT_FOUND_TYPE = URI.create(PROBLEM_BASE_URL + "/email-not-found");
+
+    private ErrorConstants() {
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/ExceptionTranslator.java

@@ -0,0 +1,112 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+import org.hostsharing.hsadminng.web.rest.util.HeaderUtil;
+
+import org.springframework.dao.ConcurrencyFailureException;
+import org.springframework.http.ResponseEntity;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.zalando.problem.DefaultProblem;
+import org.zalando.problem.Problem;
+import org.zalando.problem.ProblemBuilder;
+import org.zalando.problem.Status;
+import org.zalando.problem.spring.web.advice.ProblemHandling;
+import org.zalando.problem.violations.ConstraintViolationProblem;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import javax.servlet.http.HttpServletRequest;
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.stream.Collectors;
+
+/**
+ * Controller advice to translate the server side exceptions to client-friendly json structures.
+ * The error response follows RFC7807 - Problem Details for HTTP APIs (https://tools.ietf.org/html/rfc7807)
+ */
+@ControllerAdvice
+public class ExceptionTranslator implements ProblemHandling {
+
+    private static final String FIELD_ERRORS_KEY = "fieldErrors";
+    private static final String MESSAGE_KEY = "message";
+    private static final String PATH_KEY = "path";
+    private static final String VIOLATIONS_KEY = "violations";
+
+    /**
+     * Post-process the Problem payload to add the message key for the front-end if needed
+     */
+    @Override
+    public ResponseEntity<Problem> process(@Nullable ResponseEntity<Problem> entity, NativeWebRequest request) {
+        if (entity == null) {
+            return entity;
+        }
+        Problem problem = entity.getBody();
+        if (!(problem instanceof ConstraintViolationProblem || problem instanceof DefaultProblem)) {
+            return entity;
+        }
+        ProblemBuilder builder = Problem.builder()
+            .withType(Problem.DEFAULT_TYPE.equals(problem.getType()) ? ErrorConstants.DEFAULT_TYPE : problem.getType())
+            .withStatus(problem.getStatus())
+            .withTitle(problem.getTitle())
+            .with(PATH_KEY, request.getNativeRequest(HttpServletRequest.class).getRequestURI());
+
+        if (problem instanceof ConstraintViolationProblem) {
+            builder
+                .with(VIOLATIONS_KEY, ((ConstraintViolationProblem) problem).getViolations())
+                .with(MESSAGE_KEY, ErrorConstants.ERR_VALIDATION);
+        } else {
+            builder
+                .withCause(((DefaultProblem) problem).getCause())
+                .withDetail(problem.getDetail())
+                .withInstance(problem.getInstance());
+            problem.getParameters().forEach(builder::with);
+            if (!problem.getParameters().containsKey(MESSAGE_KEY) && problem.getStatus() != null) {
+                builder.with(MESSAGE_KEY, "error.http." + problem.getStatus().getStatusCode());
+            }
+        }
+        return new ResponseEntity<>(builder.build(), entity.getHeaders(), entity.getStatusCode());
+    }
+
+    @Override
+    public ResponseEntity<Problem> handleMethodArgumentNotValid(MethodArgumentNotValidException ex, @Nonnull NativeWebRequest request) {
+        BindingResult result = ex.getBindingResult();
+        List<FieldErrorVM> fieldErrors = result.getFieldErrors().stream()
+            .map(f -> new FieldErrorVM(f.getObjectName(), f.getField(), f.getCode()))
+            .collect(Collectors.toList());
+
+        Problem problem = Problem.builder()
+            .withType(ErrorConstants.CONSTRAINT_VIOLATION_TYPE)
+            .withTitle("Method argument not valid")
+            .withStatus(defaultConstraintViolationStatus())
+            .with(MESSAGE_KEY, ErrorConstants.ERR_VALIDATION)
+            .with(FIELD_ERRORS_KEY, fieldErrors)
+            .build();
+        return create(ex, problem, request);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<Problem> handleNoSuchElementException(NoSuchElementException ex, NativeWebRequest request) {
+        Problem problem = Problem.builder()
+            .withStatus(Status.NOT_FOUND)
+            .with(MESSAGE_KEY, ErrorConstants.ENTITY_NOT_FOUND_TYPE)
+            .build();
+        return create(ex, problem, request);
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<Problem> handleBadRequestAlertException(BadRequestAlertException ex, NativeWebRequest request) {
+        return create(ex, request, HeaderUtil.createFailureAlert(ex.getEntityName(), ex.getErrorKey(), ex.getMessage()));
+    }
+
+    @ExceptionHandler
+    public ResponseEntity<Problem> handleConcurrencyFailure(ConcurrencyFailureException ex, NativeWebRequest request) {
+        Problem problem = Problem.builder()
+            .withStatus(Status.CONFLICT)
+            .with(MESSAGE_KEY, ErrorConstants.ERR_CONCURRENCY_FAILURE)
+            .build();
+        return create(ex, problem, request);
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/FieldErrorVM.java

@@ -0,0 +1,33 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+import java.io.Serializable;
+
+public class FieldErrorVM implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    private final String objectName;
+
+    private final String field;
+
+    private final String message;
+
+    public FieldErrorVM(String dto, String field, String message) {
+        this.objectName = dto;
+        this.field = field;
+        this.message = message;
+    }
+
+    public String getObjectName() {
+        return objectName;
+    }
+
+    public String getField() {
+        return field;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/InternalServerErrorException.java

@@ -0,0 +1,16 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+import org.zalando.problem.AbstractThrowableProblem;
+import org.zalando.problem.Status;
+
+/**
+ * Simple exception with a message, that returns an Internal Server Error code.
+ */
+public class InternalServerErrorException extends AbstractThrowableProblem {
+
+    private static final long serialVersionUID = 1L;
+
+    public InternalServerErrorException(String message) {
+        super(ErrorConstants.DEFAULT_TYPE, message, Status.INTERNAL_SERVER_ERROR);
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/InvalidPasswordException.java

@@ -0,0 +1,13 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+import org.zalando.problem.AbstractThrowableProblem;
+import org.zalando.problem.Status;
+
+public class InvalidPasswordException extends AbstractThrowableProblem {
+
+    private static final long serialVersionUID = 1L;
+
+    public InvalidPasswordException() {
+        super(ErrorConstants.INVALID_PASSWORD_TYPE, "Incorrect password", Status.BAD_REQUEST);
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/LoginAlreadyUsedException.java

@@ -0,0 +1,10 @@
+package org.hostsharing.hsadminng.web.rest.errors;
+
+public class LoginAlreadyUsedException extends BadRequestAlertException {
+
+    private static final long serialVersionUID = 1L;
+
+    public LoginAlreadyUsedException() {
+        super(ErrorConstants.LOGIN_ALREADY_USED_TYPE, "Login name already used!", "userManagement", "userexists");
+    }
+}

src/main/java/org/hostsharing/hsadminng/web/rest/errors/package-info.java

@@ -0,0 +1,6 @@
+/**
+ * Specific errors used with Zalando's "problem-spring-web" library.
+ *
+ * More information on https://github.com/zalando/problem-spring-web
+ */
+package org.hostsharing.hsadminng.web.rest.errors;

src/main/java/org/hostsharing/hsadminng/web/rest/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * Spring MVC REST controllers.
+ */
+package org.hostsharing.hsadminng.web.rest;