doc/hs-hosting-asset-type-structure.md

@@ -1,6 +1,49 @@
 ## HostingAsset Type Structure
 
 
+### Webspace+Server
+
+```plantuml
+@startuml
+left to right direction
+
+package Booking #feb28c {
+    entity BI_PRIVATE_CLOUD
+    entity BI_CLOUD_SERVER
+    entity BI_MANAGED_SERVER
+    entity BI_MANAGED_WEBSPACE
+}
+
+package Hosting #feb28c{
+    package Server #99bcdb {
+        entity HA_CLOUD_SERVER
+        entity HA_MANAGED_SERVER
+        entity HA_IPV4_NUMBER
+        entity HA_IPV6_NUMBER
+    }
+
+}
+
+BI_CLOUD_SERVER *--> BI_PRIVATE_CLOUD
+BI_MANAGED_SERVER *--> BI_PRIVATE_CLOUD
+BI_MANAGED_WEBSPACE *--> BI_MANAGED_SERVER
+
+HA_CLOUD_SERVER *==> BI_CLOUD_SERVER
+HA_MANAGED_SERVER *==> BI_MANAGED_SERVER
+HA_IPV4_NUMBER o..> HA_CLOUD_SERVER
+HA_IPV4_NUMBER o..> HA_MANAGED_SERVER
+HA_IPV6_NUMBER o..> HA_CLOUD_SERVER
+HA_IPV6_NUMBER o..> HA_MANAGED_SERVER
+
+package Legend #white {
+    SUB_ENTITY1 *--> REQUIRED_PARENT_ENTITY
+    SUB_ENTITY2 *..> OPTIONAL_PARENT_ENTITY
+    ASSIGNED_ENTITY1 o--> REQUIRED_ASSIGNED_TO_ENTITY1
+    ASSIGNED_ENTITY2 o..> OPTIONAL_ASSIGNED_TO_ENTITY2
+}
+Booking -down[hidden]->Legend
+```
+
 ### Domain
 
 ```plantuml
@@ -24,12 +67,6 @@ package Hosting #feb28c{
         entity HA_EMAIL_ADDRESS
     }
 
-    package Server #99bcdb {
-        entity HA_CLOUD_SERVER
-        entity HA_MANAGED_SERVER
-        entity HA_IP_NUMBER
-    }
-
     package Webspace #99bcdb {
         entity HA_MANAGED_WEBSPACE
         entity HA_UNIX_USER
@@ -42,25 +79,19 @@ BI_CLOUD_SERVER *--> BI_PRIVATE_CLOUD
 BI_MANAGED_SERVER *--> BI_PRIVATE_CLOUD
 BI_MANAGED_WEBSPACE *--> BI_MANAGED_SERVER
 
-HA_CLOUD_SERVER *==> BI_CLOUD_SERVER
-HA_MANAGED_SERVER *==> BI_MANAGED_SERVER
 HA_MANAGED_WEBSPACE *==> BI_MANAGED_WEBSPACE
-HA_MANAGED_WEBSPACE o..> HA_MANAGED_SERVER
 HA_UNIX_USER *==> HA_MANAGED_WEBSPACE
 HA_EMAIL_ALIAS *==> HA_MANAGED_WEBSPACE
 HA_DOMAIN_SETUP o..> HA_DOMAIN_SETUP
 HA_DOMAIN_DNS_SETUP *==> HA_DOMAIN_SETUP
-HA_DOMAIN_DNS_SETUP o..> HA_MANAGED_WEBSPACE
+HA_DOMAIN_DNS_SETUP o--> HA_MANAGED_WEBSPACE
 HA_DOMAIN_HTTP_SETUP *==> HA_DOMAIN_SETUP
-HA_DOMAIN_HTTP_SETUP o..> HA_UNIX_USER
+HA_DOMAIN_HTTP_SETUP o--> HA_UNIX_USER
 HA_DOMAIN_SMTP_SETUP *==> HA_DOMAIN_SETUP
-HA_DOMAIN_SMTP_SETUP o..> HA_MANAGED_WEBSPACE
+HA_DOMAIN_SMTP_SETUP o--> HA_MANAGED_WEBSPACE
 HA_DOMAIN_MBOX_SETUP *==> HA_DOMAIN_SETUP
-HA_DOMAIN_MBOX_SETUP o..> HA_MANAGED_WEBSPACE
+HA_DOMAIN_MBOX_SETUP o--> HA_MANAGED_WEBSPACE
 HA_EMAIL_ADDRESS *==> HA_DOMAIN_MBOX_SETUP
-HA_IP_NUMBER o..> HA_CLOUD_SERVER
-HA_IP_NUMBER o..> HA_MANAGED_SERVER
-HA_IP_NUMBER o..> HA_MANAGED_WEBSPACE
 
 package Legend #white {
     SUB_ENTITY1 *--> REQUIRED_PARENT_ENTITY
@@ -91,12 +122,6 @@ package Hosting #feb28c{
         entity HA_MARIADB_DATABASE
     }
 
-    package Server #99bcdb {
-        entity HA_CLOUD_SERVER
-        entity HA_MANAGED_SERVER
-        entity HA_IP_NUMBER
-    }
-
     package Webspace #99bcdb {
         entity HA_MANAGED_WEBSPACE
         entity HA_UNIX_USER
@@ -109,20 +134,12 @@ BI_CLOUD_SERVER *--> BI_PRIVATE_CLOUD
 BI_MANAGED_SERVER *--> BI_PRIVATE_CLOUD
 BI_MANAGED_WEBSPACE *--> BI_MANAGED_SERVER
 
-HA_CLOUD_SERVER *==> BI_CLOUD_SERVER
-HA_MANAGED_SERVER *==> BI_MANAGED_SERVER
 HA_MANAGED_WEBSPACE *==> BI_MANAGED_WEBSPACE
-HA_MANAGED_WEBSPACE o..> HA_MANAGED_SERVER
 HA_UNIX_USER *==> HA_MANAGED_WEBSPACE
 HA_EMAIL_ALIAS *==> HA_MANAGED_WEBSPACE
-HA_MARIADB_INSTANCE *==> HA_MANAGED_SERVER
 HA_MARIADB_USER *==> HA_MANAGED_WEBSPACE
-HA_MARIADB_USER o..> HA_MARIADB_INSTANCE
+HA_MARIADB_USER o--> HA_MARIADB_INSTANCE
 HA_MARIADB_DATABASE *==> HA_MARIADB_USER
-HA_MARIADB_DATABASE o..> HA_MARIADB_INSTANCE
-HA_IP_NUMBER o..> HA_CLOUD_SERVER
-HA_IP_NUMBER o..> HA_MANAGED_SERVER
-HA_IP_NUMBER o..> HA_MANAGED_WEBSPACE
 
 package Legend #white {
     SUB_ENTITY1 *--> REQUIRED_PARENT_ENTITY
@@ -153,12 +170,6 @@ package Hosting #feb28c{
         entity HA_PGSQL_DATABASE
     }
 
-    package Server #99bcdb {
-        entity HA_CLOUD_SERVER
-        entity HA_MANAGED_SERVER
-        entity HA_IP_NUMBER
-    }
-
     package Webspace #99bcdb {
         entity HA_MANAGED_WEBSPACE
         entity HA_UNIX_USER
@@ -171,20 +182,12 @@ BI_CLOUD_SERVER *--> BI_PRIVATE_CLOUD
 BI_MANAGED_SERVER *--> BI_PRIVATE_CLOUD
 BI_MANAGED_WEBSPACE *--> BI_MANAGED_SERVER
 
-HA_CLOUD_SERVER *==> BI_CLOUD_SERVER
-HA_MANAGED_SERVER *==> BI_MANAGED_SERVER
 HA_MANAGED_WEBSPACE *==> BI_MANAGED_WEBSPACE
-HA_MANAGED_WEBSPACE o..> HA_MANAGED_SERVER
 HA_UNIX_USER *==> HA_MANAGED_WEBSPACE
 HA_EMAIL_ALIAS *==> HA_MANAGED_WEBSPACE
-HA_PGSQL_INSTANCE *==> HA_MANAGED_SERVER
+HA_PGSQL_USER *==> HA_MANAGED_WEBSPACE
-HA_PGSQL_USER *==> HA_PGSQL_INSTANCE
+HA_PGSQL_USER o--> HA_PGSQL_INSTANCE
-HA_PGSQL_USER o..> HA_MANAGED_WEBSPACE
+HA_PGSQL_DATABASE *==> HA_PGSQL_USER
-HA_PGSQL_DATABASE *==> HA_MANAGED_WEBSPACE
-HA_PGSQL_DATABASE o..> HA_PGSQL_INSTANCE
-HA_IP_NUMBER o..> HA_CLOUD_SERVER
-HA_IP_NUMBER o..> HA_MANAGED_SERVER
-HA_IP_NUMBER o..> HA_MANAGED_WEBSPACE
 
 package Legend #white {
     SUB_ENTITY1 *--> REQUIRED_PARENT_ENTITY

src/main/java/net/hostsharing/hsadminng/hs/booking/item/HsBookingItemType.java

@@ -1,6 +1,7 @@
 package net.hostsharing.hsadminng.hs.booking.item;
 
 import java.util.List;
+import java.util.Set;
 
 import static java.util.Optional.ofNullable;
 
@@ -21,12 +22,17 @@ public enum HsBookingItemType implements Node {
     }
 
     @Override
-    public List<String> edges() {
+    public List<String> edges(final Set<String> inGroups) {
         return ofNullable(parentItemType)
                 .map(p -> (nodeName() + " *--> " + p.nodeName()))
                 .stream().toList();
     }
 
+    @Override
+    public boolean belongsToAny(final Set<String> groups) {
+        return true;
+    }
+
     @Override
     public String nodeName() {
         return "BI_" + name();

src/main/java/net/hostsharing/hsadminng/hs/booking/item/Node.java

@@ -1,9 +1,11 @@
 package net.hostsharing.hsadminng.hs.booking.item;
 
 import java.util.List;
+import java.util.Set;
 
 public interface Node {
 
     String nodeName();
-    List<String> edges();
+    boolean belongsToAny(Set<String> groups);
+    List<String> edges(final Set<String> inGroup);
 }

src/main/java/net/hostsharing/hsadminng/hs/hosting/asset/HsHostingAssetType.java

@@ -5,7 +5,6 @@ import net.hostsharing.hsadminng.hs.booking.item.HsBookingItemEntity;
 import net.hostsharing.hsadminng.hs.booking.item.HsBookingItemType;
 import net.hostsharing.hsadminng.hs.booking.item.Node;
 
-import jakarta.validation.constraints.NotNull;
 import javax.naming.NamingException;
 import java.io.IOException;
 import java.nio.file.Files;
@@ -30,7 +29,6 @@ import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.Rela
 import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.RelationType.ASSIGNED_TO_ASSET;
 import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.RelationType.BOOKING_ITEM;
 import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.RelationType.PARENT_ASSET;
-import static net.hostsharing.hsadminng.mapper.Array.emptyArray;
 
 public enum HsHostingAssetType implements Node {
     SAME_TYPE, // pseudo-type for recursive references
@@ -116,22 +114,27 @@ public enum HsHostingAssetType implements Node {
     IPV4_NUMBER(
             inGroup("Server"),
             optionallyAssignedTo(CLOUD_SERVER).or(MANAGED_SERVER).or(MANAGED_WEBSPACE)
+    ),
+
+    IPV6_NUMBER(
+            inGroup("Server"),
+            optionallyAssignedTo(CLOUD_SERVER).or(MANAGED_SERVER).or(MANAGED_WEBSPACE)
     );
 
     private final String groupName;
     private final EntityTypeRelation<?, ?>[] relations;
 
     HsHostingAssetType(
-            String groupName,
+            final String groupName,
-            @NotNull final EntityTypeRelation<?, ?>... relations
+            final EntityTypeRelation<?, ?>... relations
-    ) {
+            ) {
         this.groupName = groupName;
         this.relations = relations;
     }
 
     HsHostingAssetType() {
         this.groupName = null;
-        this.relations = emptyArray(EntityTypeRelation.class);
+        this.relations = null;
     }
 
     /// just syntactic sugar
@@ -200,14 +203,22 @@ public enum HsHostingAssetType implements Node {
     }
 
     @Override
-    public List<String> edges() {
+    public List<String> edges(final Set<String> inGroups) {
         return stream(relations)
-                .map(r -> r.relatedTypes(this).stream().map(x -> nodeName() + r.edge + x.nodeName()).toList())
+                .map(r -> r.relatedTypes(this).stream()
+                        .filter(x -> x.belongsToAny(inGroups))
+                        .map(x -> nodeName() + r.edge + x.nodeName())
+                        .toList())
                 .flatMap(List::stream)
                 .sorted()
                 .toList();
     }
 
+    @Override
+    public boolean belongsToAny(final Set<String> groups) {
+        return groups.contains(this.groupName);
+    }
+
     @Override
     public String nodeName() {
         return "HA_" + name();
@@ -233,12 +244,12 @@ public enum HsHostingAssetType implements Node {
                 .map(t -> "entity " + t.nodeName())
                 .collect(joining("\n"));
         final String bookingItemEdges = stream(HsBookingItemType.values())
-                .map(HsBookingItemType::edges)
+                .map(t -> t.edges(includedHostingGroups))
                 .flatMap(Collection::stream)
                 .collect(joining("\n"));
         final String hostingAssetEdges = stream(HsHostingAssetType.values())
                 .filter(t -> t.isInGroups(includedHostingGroups))
-                .map(HsHostingAssetType::edges)
+                .map(t -> t.edges(includedHostingGroups))
                 .flatMap(Collection::stream)
                 .collect(joining("\n"));
         return """
@@ -304,9 +315,11 @@ public enum HsHostingAssetType implements Node {
                 .map(t -> t.groupName)
                 .collect(toSet()));
 
-        markdown.append(renderAsPlantUML("Domain", Set.of("Domain", "Webspace", "Server")))
+        markdown
-                .append(renderAsPlantUML("MariaDB", Set.of("MariaDB", "Webspace", "Server")))
+                .append(renderAsPlantUML("Webspace+Server", Set.of("Server")))
-                .append(renderAsPlantUML("PostgreSQL", Set.of("PostgreSQL", "Webspace", "Server")));
+                .append(renderAsPlantUML("Domain", Set.of("Domain", "Webspace")))
+                .append(renderAsPlantUML("MariaDB", Set.of("MariaDB", "Webspace")))
+                .append(renderAsPlantUML("PostgreSQL", Set.of("PostgreSQL", "Webspace")));
 
         markdown.append("""
 

src/main/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HostingAssetEntityValidatorRegistry.java

@@ -33,6 +33,7 @@ public class HostingAssetEntityValidatorRegistry {
         register(PGSQL_USER, new HsPostgreSqlUserHostingAssetValidator());
         register(PGSQL_DATABASE, new HsPostgreSqlDatabaseHostingAssetValidator());
         register(IPV4_NUMBER, new HsIPv4NumberHostingAssetValidator());
+        register(IPV6_NUMBER, new HsIPv6NumberHostingAssetValidator());
     }
 
     private static void register(final Enum<HsHostingAssetType> type, final HsEntityValidator<HsHostingAssetEntity> validator) {

src/main/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsIPv4NumberHostingAssetValidator.java

@@ -8,7 +8,7 @@ import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.IPV4
 
 class HsIPv4NumberHostingAssetValidator extends HostingAssetEntityValidator {
 
-    public static Pattern IPV4_REGEX = Pattern.compile("^((25[0-5]|(2[0-4]|1\\d|[1-9]|)\\d)\\.?\\b){4}$");
+    private static final Pattern IPV4_REGEX = Pattern.compile("^((25[0-5]|(2[0-4]|1\\d|[1-9]|)\\d)\\.?\\b){4}$");
 
     HsIPv4NumberHostingAssetValidator() {
         super(

src/main/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsIPv6NumberHostingAssetValidator.java

@@ -0,0 +1,49 @@
+package net.hostsharing.hsadminng.hs.hosting.asset.validators;
+
+import net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetEntity;
+
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+import java.util.List;
+import java.util.regex.Pattern;
+
+import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.IPV6_NUMBER;
+
+class HsIPv6NumberHostingAssetValidator extends HostingAssetEntityValidator {
+
+    // simplified pattern, the real check is done by letting Java parse the address
+    private static final Pattern IPV6_REGEX = Pattern.compile("([a-f0-9:]+:+)+[a-f0-9]+");
+
+    HsIPv6NumberHostingAssetValidator() {
+        super(
+                IPV6_NUMBER,
+                AlarmContact.isOptional(),
+
+                NO_EXTRA_PROPERTIES
+        );
+    }
+
+    @Override
+    public List<String> validateEntity(final HsHostingAssetEntity assetEntity) {
+        final var violations = super.validateEntity(assetEntity);
+
+        if (!isValidIPv6Address(assetEntity.getIdentifier())) {
+            violations.add("'identifier' expected to be a valid IPv6 address, but is '" + assetEntity.getIdentifier() + "'");
+        }
+
+        return violations;
+    }
+
+    @Override
+    protected Pattern identifierPattern(final HsHostingAssetEntity assetEntity) {
+        return IPV6_REGEX;
+    }
+
+    private boolean isValidIPv6Address(final String identifier) {
+        try {
+            return InetAddress.getByName(identifier) instanceof java.net.Inet6Address;
+        } catch (UnknownHostException e) {
+            return false;
+        }
+    }
+}

src/main/resources/api-definition/hs-hosting/hs-hosting-asset-schemas.yaml

@@ -24,6 +24,7 @@ components:
                 - MARIADB_USER
                 - MARIADB_DATABASE
                 - IPV4_NUMBER
+                - IPV6_NUMBER
 
         HsHostingAsset:
             type: object

src/main/resources/db/changelog/7-hs-hosting/701-hosting-asset/7010-hs-hosting-asset.sql

@@ -22,7 +22,8 @@ create type HsHostingAssetType as enum (
     'MARIADB_INSTANCE',
     'MARIADB_USER',
     'MARIADB_DATABASE',
-    'IPV4_NUMBER'
+    'IPV4_NUMBER',
+    'IPV6_NUMBER'
 );
 
 CREATE CAST (character varying as HsHostingAssetType) WITH INOUT AS IMPLICIT;
@@ -88,6 +89,7 @@ begin
         when 'MARIADB_DATABASE' then 'MARIADB_USER'
 
         when 'IPV4_NUMBER' then null
+        when 'IPV6_NUMBER' then null
 
         else raiseException(format('[400] unknown asset type %s', NEW.type::text))
     end);

src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/HsHostingAssetControllerRestTest.java

@@ -507,6 +507,25 @@ public class HsHostingAssetControllerRestTest {
                             "config": {}
                         }
                     ]
+                """),
+        IPV6_NUMBER(
+                List.of(
+                        HsHostingAssetEntity.builder()
+                                .type(HsHostingAssetType.IPV4_NUMBER)
+                                .assignedToAsset(TEST_MANAGED_SERVER_HOSTING_ASSET)
+                                .identifier("2001:db8:3333:4444:5555:6666:7777:8888")
+                                .caption("some fake IPv6 number")
+                                .build()),
+                """
+                    [
+                        {
+                            "type": "IPV4_NUMBER",
+                            "identifier": "2001:db8:3333:4444:5555:6666:7777:8888",
+                            "caption": "some fake IPv6 number",
+                            "alarmContact": null,
+                            "config": {}
+                        }
+                    ]
                 """);
 
         final HsHostingAssetType assetType;

src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/HsHostingAssetPropsControllerAcceptanceTest.java

@@ -48,7 +48,8 @@ class HsHostingAssetPropsControllerAcceptanceTest {
                             "PGSQL_INSTANCE",
                             "PGSQL_USER",
                             "PGSQL_DATABASE",
-                            "IPV4_NUMBER"
+                            "IPV4_NUMBER",
+                            "IPV6_NUMBER"
                         ]
                         """));
         // @formatter:on

src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/HsHostingAssetTypeUnitTest.java

@@ -14,19 +14,62 @@ class HsHostingAssetTypeUnitTest {
                 ## HostingAsset Type Structure
 
 
-                ### Domain
+                ### Webspace+Server
-
+                
                 ```plantuml
                 @startuml
                 left to right direction
-
+                
                 package Booking #feb28c {
                     entity BI_PRIVATE_CLOUD
                     entity BI_CLOUD_SERVER
                     entity BI_MANAGED_SERVER
                     entity BI_MANAGED_WEBSPACE
                 }
-
+                
+                package Hosting #feb28c{
+                    package Server #99bcdb {
+                        entity HA_CLOUD_SERVER
+                        entity HA_MANAGED_SERVER
+                        entity HA_IPV4_NUMBER
+                        entity HA_IPV6_NUMBER
+                    }
+                
+                }
+                
+                BI_CLOUD_SERVER *--> BI_PRIVATE_CLOUD
+                BI_MANAGED_SERVER *--> BI_PRIVATE_CLOUD
+                BI_MANAGED_WEBSPACE *--> BI_MANAGED_SERVER
+                
+                HA_CLOUD_SERVER *==> BI_CLOUD_SERVER
+                HA_MANAGED_SERVER *==> BI_MANAGED_SERVER
+                HA_IPV4_NUMBER o..> HA_CLOUD_SERVER
+                HA_IPV4_NUMBER o..> HA_MANAGED_SERVER
+                HA_IPV6_NUMBER o..> HA_CLOUD_SERVER
+                HA_IPV6_NUMBER o..> HA_MANAGED_SERVER
+                
+                package Legend #white {
+                    SUB_ENTITY1 *--> REQUIRED_PARENT_ENTITY
+                    SUB_ENTITY2 *..> OPTIONAL_PARENT_ENTITY
+                    ASSIGNED_ENTITY1 o--> REQUIRED_ASSIGNED_TO_ENTITY1
+                    ASSIGNED_ENTITY2 o..> OPTIONAL_ASSIGNED_TO_ENTITY2
+                }
+                Booking -down[hidden]->Legend
+                ```
+                
+                ### Domain
+                
+                ```plantuml
+                @startuml
+                left to right direction
+                
+                package Booking #feb28c {
+                    entity BI_PRIVATE_CLOUD
+                    entity BI_CLOUD_SERVER
+                    entity BI_MANAGED_SERVER
+                    entity BI_MANAGED_WEBSPACE
+                }
+                
                 package Hosting #feb28c{
                     package Domain #99bcdb {
                         entity HA_DOMAIN_SETUP
@@ -36,29 +79,20 @@ class HsHostingAssetTypeUnitTest {
                         entity HA_DOMAIN_MBOX_SETUP
                         entity HA_EMAIL_ADDRESS
                     }
-
+                
-                    package Server #99bcdb {
-                        entity HA_CLOUD_SERVER
-                        entity HA_MANAGED_SERVER
-                        entity HA_IPV4_NUMBER
-                    }
-
                     package Webspace #99bcdb {
                         entity HA_MANAGED_WEBSPACE
                         entity HA_UNIX_USER
                         entity HA_EMAIL_ALIAS
                     }
-
+                
                 }
-
+                
                 BI_CLOUD_SERVER *--> BI_PRIVATE_CLOUD
                 BI_MANAGED_SERVER *--> BI_PRIVATE_CLOUD
                 BI_MANAGED_WEBSPACE *--> BI_MANAGED_SERVER
-
+                
-                HA_CLOUD_SERVER *==> BI_CLOUD_SERVER
-                HA_MANAGED_SERVER *==> BI_MANAGED_SERVER
                 HA_MANAGED_WEBSPACE *==> BI_MANAGED_WEBSPACE
-                HA_MANAGED_WEBSPACE o..> HA_MANAGED_SERVER
                 HA_UNIX_USER *==> HA_MANAGED_WEBSPACE
                 HA_EMAIL_ALIAS *==> HA_MANAGED_WEBSPACE
                 HA_DOMAIN_SETUP o..> HA_DOMAIN_SETUP
@@ -71,10 +105,7 @@ class HsHostingAssetTypeUnitTest {
                 HA_DOMAIN_MBOX_SETUP *==> HA_DOMAIN_SETUP
                 HA_DOMAIN_MBOX_SETUP o--> HA_MANAGED_WEBSPACE
                 HA_EMAIL_ADDRESS *==> HA_DOMAIN_MBOX_SETUP
-                HA_IPV4_NUMBER o..> HA_CLOUD_SERVER
+                
-                HA_IPV4_NUMBER o..> HA_MANAGED_SERVER
-                HA_IPV4_NUMBER o..> HA_MANAGED_WEBSPACE
-
                 package Legend #white {
                     SUB_ENTITY1 *--> REQUIRED_PARENT_ENTITY
                     SUB_ENTITY2 *..> OPTIONAL_PARENT_ENTITY
@@ -83,59 +114,46 @@ class HsHostingAssetTypeUnitTest {
                 }
                 Booking -down[hidden]->Legend
                 ```
-
+                
                 ### MariaDB
-
+                
                 ```plantuml
                 @startuml
                 left to right direction
-
+                
                 package Booking #feb28c {
                     entity BI_PRIVATE_CLOUD
                     entity BI_CLOUD_SERVER
                     entity BI_MANAGED_SERVER
                     entity BI_MANAGED_WEBSPACE
                 }
-
+                
                 package Hosting #feb28c{
                     package MariaDB #99bcdb {
                         entity HA_MARIADB_INSTANCE
                         entity HA_MARIADB_USER
                         entity HA_MARIADB_DATABASE
                     }
-
+                
-                    package Server #99bcdb {
-                        entity HA_CLOUD_SERVER
-                        entity HA_MANAGED_SERVER
-                        entity HA_IPV4_NUMBER
-                    }
-
                     package Webspace #99bcdb {
                         entity HA_MANAGED_WEBSPACE
                         entity HA_UNIX_USER
                         entity HA_EMAIL_ALIAS
                     }
-
+                
                 }
-
+                
                 BI_CLOUD_SERVER *--> BI_PRIVATE_CLOUD
                 BI_MANAGED_SERVER *--> BI_PRIVATE_CLOUD
                 BI_MANAGED_WEBSPACE *--> BI_MANAGED_SERVER
-
+                
-                HA_CLOUD_SERVER *==> BI_CLOUD_SERVER
-                HA_MANAGED_SERVER *==> BI_MANAGED_SERVER
                 HA_MANAGED_WEBSPACE *==> BI_MANAGED_WEBSPACE
-                HA_MANAGED_WEBSPACE o..> HA_MANAGED_SERVER
                 HA_UNIX_USER *==> HA_MANAGED_WEBSPACE
                 HA_EMAIL_ALIAS *==> HA_MANAGED_WEBSPACE
-                HA_MARIADB_INSTANCE *==> HA_MANAGED_SERVER
                 HA_MARIADB_USER *==> HA_MANAGED_WEBSPACE
                 HA_MARIADB_USER o--> HA_MARIADB_INSTANCE
                 HA_MARIADB_DATABASE *==> HA_MARIADB_USER
-                HA_IPV4_NUMBER o..> HA_CLOUD_SERVER
+                
-                HA_IPV4_NUMBER o..> HA_MANAGED_SERVER
-                HA_IPV4_NUMBER o..> HA_MANAGED_WEBSPACE
-
                 package Legend #white {
                     SUB_ENTITY1 *--> REQUIRED_PARENT_ENTITY
                     SUB_ENTITY2 *..> OPTIONAL_PARENT_ENTITY
@@ -144,59 +162,46 @@ class HsHostingAssetTypeUnitTest {
                 }
                 Booking -down[hidden]->Legend
                 ```
-
+                
                 ### PostgreSQL
-
+                
                 ```plantuml
                 @startuml
                 left to right direction
-
+                
                 package Booking #feb28c {
                     entity BI_PRIVATE_CLOUD
                     entity BI_CLOUD_SERVER
                     entity BI_MANAGED_SERVER
                     entity BI_MANAGED_WEBSPACE
                 }
-
+                
                 package Hosting #feb28c{
                     package PostgreSQL #99bcdb {
                         entity HA_PGSQL_INSTANCE
                         entity HA_PGSQL_USER
                         entity HA_PGSQL_DATABASE
                     }
-
+                
-                    package Server #99bcdb {
-                        entity HA_CLOUD_SERVER
-                        entity HA_MANAGED_SERVER
-                        entity HA_IPV4_NUMBER
-                    }
-
                     package Webspace #99bcdb {
                         entity HA_MANAGED_WEBSPACE
                         entity HA_UNIX_USER
                         entity HA_EMAIL_ALIAS
                     }
-
+                
                 }
-
+                
                 BI_CLOUD_SERVER *--> BI_PRIVATE_CLOUD
                 BI_MANAGED_SERVER *--> BI_PRIVATE_CLOUD
                 BI_MANAGED_WEBSPACE *--> BI_MANAGED_SERVER
-
+                
-                HA_CLOUD_SERVER *==> BI_CLOUD_SERVER
-                HA_MANAGED_SERVER *==> BI_MANAGED_SERVER
                 HA_MANAGED_WEBSPACE *==> BI_MANAGED_WEBSPACE
-                HA_MANAGED_WEBSPACE o..> HA_MANAGED_SERVER
                 HA_UNIX_USER *==> HA_MANAGED_WEBSPACE
                 HA_EMAIL_ALIAS *==> HA_MANAGED_WEBSPACE
-                HA_PGSQL_INSTANCE *==> HA_MANAGED_SERVER
                 HA_PGSQL_USER *==> HA_MANAGED_WEBSPACE
                 HA_PGSQL_USER o--> HA_PGSQL_INSTANCE
                 HA_PGSQL_DATABASE *==> HA_PGSQL_USER
-                HA_IPV4_NUMBER o..> HA_CLOUD_SERVER
+                
-                HA_IPV4_NUMBER o..> HA_MANAGED_SERVER
-                HA_IPV4_NUMBER o..> HA_MANAGED_WEBSPACE
-
                 package Legend #white {
                     SUB_ENTITY1 *--> REQUIRED_PARENT_ENTITY
                     SUB_ENTITY2 *..> OPTIONAL_PARENT_ENTITY
@@ -205,7 +210,7 @@ class HsHostingAssetTypeUnitTest {
                 }
                 Booking -down[hidden]->Legend
                 ```
-
+                
                 This code generated was by HsHostingAssetType.main, do not amend manually.
                 """);
     }

src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HostingAssetEntityValidatorRegistryUnitTest.java

@@ -46,7 +46,8 @@ class HostingAssetEntityValidatorRegistryUnitTest {
                 HsHostingAssetType.PGSQL_INSTANCE,
                 HsHostingAssetType.PGSQL_USER,
                 HsHostingAssetType.PGSQL_DATABASE,
-                HsHostingAssetType.IPV4_NUMBER
+                HsHostingAssetType.IPV4_NUMBER,
+                HsHostingAssetType.IPV6_NUMBER
         );
     }
 }

src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsIPv6NumberHostingAssetValidatorUnitTest.java

@@ -0,0 +1,120 @@
+package net.hostsharing.hsadminng.hs.hosting.asset.validators;
+
+import net.hostsharing.hsadminng.hs.booking.item.HsBookingItemEntity;
+import net.hostsharing.hsadminng.hs.booking.item.HsBookingItemType;
+import net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetEntity;
+import net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetEntity.HsHostingAssetEntityBuilder;
+import net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.EnumSource;
+import org.junit.jupiter.params.provider.ValueSource;
+
+import java.util.Map;
+
+import static java.util.Map.entry;
+import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.IPV6_NUMBER;
+import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.MANAGED_WEBSPACE;
+import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.UNIX_USER;
+import static org.assertj.core.api.Assertions.assertThat;
+
+class HsIPv6NumberHostingAssetValidatorUnitTest {
+
+    static HsHostingAssetEntityBuilder validEntityBuilder() {
+        return HsHostingAssetEntity.builder()
+                .type(IPV6_NUMBER)
+                .identifier("2001:db8:3333:4444:5555:6666:7777:8888");
+    }
+
+    @Test
+    void containsExpectedProperties() {
+        // when
+        final var validator = HostingAssetEntityValidatorRegistry.forType(IPV6_NUMBER);
+
+        // then
+        assertThat(validator.properties()).map(Map::toString).isEmpty();
+    }
+
+    @Test
+    void acceptsValidEntity() {
+        // given
+        final var givenEntity = validEntityBuilder().build();
+        final var validator = HostingAssetEntityValidatorRegistry.forType(givenEntity.getType());
+
+        // when
+        final var result = validator.validateEntity(givenEntity);
+
+        // then
+        assertThat(result).isEmpty();
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = {"83.223.95", "2a01:37:1000::53df:5f91:0:123::123"})
+    void rejectsInvalidIdentifier(final String givenIdentifier) {
+        // given
+        final var givenEntity = validEntityBuilder().identifier(givenIdentifier).build();
+        final var validator = HostingAssetEntityValidatorRegistry.forType(givenEntity.getType());
+
+        // when
+        final var result = validator.validateEntity(givenEntity);
+
+        // then
+        assertThat(result).contains(
+                "'identifier' expected to be a valid IPv6 address, but is '" + givenIdentifier + "'"
+        );
+    }
+
+    @ParameterizedTest
+    @EnumSource(value = HsHostingAssetType.class, names = { "CLOUD_SERVER", "MANAGED_SERVER", "MANAGED_WEBSPACE" })
+    void acceptsValidReferencedEntity(final HsHostingAssetType givenAssignedToAssetType) {
+        // given
+        final var ipNumberHostingAssetEntity = validEntityBuilder()
+                .assignedToAsset(HsHostingAssetEntity.builder().type(givenAssignedToAssetType).build())
+                .build();
+        final var validator = HostingAssetEntityValidatorRegistry.forType(ipNumberHostingAssetEntity.getType());
+
+        // when
+        final var result = validator.validateEntity(ipNumberHostingAssetEntity);
+
+        // then
+        assertThat(result).isEmpty();
+    }
+
+    @Test
+    void rejectsInvalidReferencedEntities() {
+        // given
+        final var ipNumberHostingAssetEntity = validEntityBuilder()
+                .bookingItem(HsBookingItemEntity.builder().type(HsBookingItemType.CLOUD_SERVER).build())
+                .parentAsset(HsHostingAssetEntity.builder().type(MANAGED_WEBSPACE).build())
+                .assignedToAsset(HsHostingAssetEntity.builder().type(UNIX_USER).build())
+                .build();
+        final var validator = HostingAssetEntityValidatorRegistry.forType(ipNumberHostingAssetEntity.getType());
+
+        // when
+        final var result = validator.validateEntity(ipNumberHostingAssetEntity);
+
+        // then
+        assertThat(result).containsExactlyInAnyOrder(
+                "'IPV6_NUMBER:2001:db8:3333:4444:5555:6666:7777:8888.bookingItem' must be null but is of type CLOUD_SERVER",
+                "'IPV6_NUMBER:2001:db8:3333:4444:5555:6666:7777:8888.parentAsset' must be null but is of type MANAGED_WEBSPACE",
+                "'IPV6_NUMBER:2001:db8:3333:4444:5555:6666:7777:8888.assignedToAsset' must be null or of type CLOUD_SERVER or MANAGED_SERVER or MANAGED_WEBSPACE but is of type UNIX_USER");
+    }
+
+    @Test
+    void rejectsInvalidProperties() {
+        // given
+        final var ipNumberHostingAssetEntity = validEntityBuilder()
+                .config(Map.ofEntries(
+                        entry("any", "false")
+                ))
+                .build();
+        final var validator = HostingAssetEntityValidatorRegistry.forType(ipNumberHostingAssetEntity.getType());
+
+        // when
+        final var result = validator.validateEntity(ipNumberHostingAssetEntity);
+
+        // then
+        assertThat(result).containsExactlyInAnyOrder(
+                "'IPV6_NUMBER:2001:db8:3333:4444:5555:6666:7777:8888.config.any' is not expected but is set to 'false'");
+    }
+}