implement insert trigger if no explicit grant rule is specified

src/main/java/net/hostsharing/hsadminng/rbac/rbacdef/InsertTriggerGenerator.java

@@ -1,6 +1,7 @@
 package net.hostsharing.hsadminng.rbac.rbacdef;
 
 import java.util.Optional;
+import java.util.stream.Stream;
 
 import static net.hostsharing.hsadminng.rbac.rbacdef.RbacView.Permission.INSERT;
 import static net.hostsharing.hsadminng.rbac.rbacdef.RbacView.RbacGrantDefinition.GrantType.PERM_TO_ROLE;
@@ -95,11 +96,7 @@ public class InsertTriggerGenerator {
     }
 
     private void generateInsertCheckTrigger(final StringWriter plPgSql) {
-        rbacDef.getGrantDefs().stream()
-            .filter(g -> g.isToCreate() && g.grantType() == PERM_TO_ROLE &&
-                    g.getPermDef().getPermission() == INSERT )
-            .forEach(g -> {
-                plPgSql.writeLn("""            
+        plPgSql.writeLn("""
                     /**
                         Checks if the user or assumed roles are allowed to insert a row to ${rawSubTable}.
                     */
@@ -107,24 +104,51 @@ public class InsertTriggerGenerator {
                         returns trigger
                         language plpgsql as $$
                     begin
-                        raise exception 'insert into ${rawSubTable} not allowed for current subjects %', currentSubjectsUuids();
+                        raise exception 'insert into ${rawSubTable} not allowed for current subjects % (%)',
+                            currentSubjects(), currentSubjectsUuids();
                     end; $$;
-                    
-                    create trigger ${rawSubTable}_insert_permission_check_tg
-                        before insert on ${rawSubTable}
-                        for each row
-                        when ( not hasInsertPermission(NEW.${referenceColumn}, 'INSERT', '${rawSubTable}') )
-                            execute procedure ${rawSubTable}_insert_permission_missing_tf();
                     """,
-                    with("rawSubTable", g.getPermDef().entityAlias.getRawTableName()),
-                    with("referenceColumn", g.getSuperRoleDef().getEntityAlias().dependsOnColumName() ));
-            });
+                    with("rawSubTable", rbacDef.getRootEntityAlias().getRawTableName()));
+        getOptionalInsertGrant().ifPresentOrElse(g -> {
+            plPgSql.writeLn("""            
+                create trigger ${rawSubTable}_insert_permission_check_tg
+                    before insert on ${rawSubTable}
+                    for each row
+                    when ( not hasInsertPermission(NEW.${referenceColumn}, 'INSERT', '${rawSubTable}') )
+                        execute procedure ${rawSubTable}_insert_permission_missing_tf();
+                """,
+                with("rawSubTable", rbacDef.getRootEntityAlias().getRawTableName()),
+                with("referenceColumn", g.getSuperRoleDef().getEntityAlias().dependsOnColumName() ));
+        },
+        () -> {
+            plPgSql.writeLn("""            
+                create trigger ${rawSubTable}_insert_permission_check_tg
+                    before insert on ${rawSubTable}
+                    for each row
+                    -- As there is no explicit INSERT grant specified for this table,
+                    -- only global admins are allowed to insert any rows.
+                    when ( not isGlobalAdmin() )
+                        execute procedure ${rawSubTable}_insert_permission_missing_tf();
+                """,
+                with("rawSubTable", rbacDef.getRootEntityAlias().getRawTableName()));
+        });
+    }
+
+    private Stream<RbacView.RbacGrantDefinition> getInsertGrants() {
+        return rbacDef.getGrantDefs().stream()
+                .filter(g -> g.grantType() == PERM_TO_ROLE)
+                .filter(g -> g.getPermDef().toCreate && g.getPermDef().getPermission() == INSERT);
+    }
+
+    private Optional<RbacView.RbacGrantDefinition> getOptionalInsertGrant() {
+        return getInsertGrants()
+                .reduce((x, y) -> {
+                    throw new IllegalStateException("only a single INSERT permission grant allowed");
+                });
     }
 
     private Optional<RbacView.RbacRoleDefinition> getOptionalInsertSuperRole() {
-        return rbacDef.getGrantDefs().stream()
-                .filter(g -> g.grantType() == PERM_TO_ROLE)
-                .filter(g -> g.getPermDef().toCreate && g.getPermDef().getPermission() == INSERT)
+        return getInsertGrants()
                 .map(RbacView.RbacGrantDefinition::getSuperRoleDef)
                 .reduce((x, y) -> {
                     throw new IllegalStateException("only a single INSERT permission grant allowed");

src/main/java/net/hostsharing/hsadminng/rbac/rbacdef/RolesGrantsAndPermissionsGenerator.java

@@ -334,6 +334,7 @@ class RolesGrantsAndPermissionsGenerator {
                     .map(RbacPermissionDefinition::getPermission)
                     .map(RbacView.Permission::permission)
                     .map(p -> "'" + p + "'")
+                    .sorted()
                     .toList();
             plPgSql.indented(() ->
                     plPgSql.writeLn("permissions => array[" + joinArrayElements(arrayElements, 3) + "],\n"));

src/main/resources/db/changelog/080-rbac-global.sql

@@ -22,6 +22,19 @@ grant select on global to ${HSADMINNG_POSTGRES_RESTRICTED_USERNAME};
 --//
 
 
+-- ============================================================================
+--changeset rbac-global-IS-GLOBAL-ADMIN:1 endDelimiter:--//
+-- ------------------------------------------------------------------
+
+create or replace function isGlobalAdmin()
+    returns boolean
+    language plpgsql as $$
+begin
+    return isGranted(currentSubjectsUuids(), findRoleId(globalAdmin()));
+end; $$;
+--//
+
+
 -- ============================================================================
 --changeset rbac-global-HAS-GLOBAL-PERMISSION:1 endDelimiter:--//
 -- ------------------------------------------------------------------

src/main/resources/db/changelog/113-test-customer-rbac.sql

@@ -1,5 +1,5 @@
 --liquibase formatted sql
--- This code generated was by RbacViewPostgresGenerator at 2024-03-06T15:40:13.239729250.
+-- This code generated was by RbacViewPostgresGenerator at 2024-03-07T12:25:36.376742633.
 
 
 -- ============================================================================
@@ -80,6 +80,25 @@ execute procedure insertTriggerForTestCustomer_tf();
 --changeset test-customer-rbac-INSERT:1 endDelimiter:--//
 -- ----------------------------------------------------------------------------
 
+/**
+    Checks if the user or assumed roles are allowed to insert a row to test_customer.
+*/
+create or replace function test_customer_insert_permission_missing_tf()
+    returns trigger
+    language plpgsql as $$
+begin
+    raise exception 'insert into test_customer not allowed for current subjects % (%)',
+        currentSubjects(), currentSubjectsUuids();
+end; $$;
+
+create trigger test_customer_insert_permission_check_tg
+    before insert on test_customer
+    for each row
+    -- As there is no explicit INSERT grant specified for this table,
+    -- only global admins are allowed to insert any rows.
+    when ( not isGlobalAdmin() )
+        execute procedure test_customer_insert_permission_missing_tf();
+
 --//
 
 -- ============================================================================

src/main/resources/db/changelog/123-test-package-rbac.sql

@@ -1,5 +1,5 @@
 --liquibase formatted sql
--- This code generated was by RbacViewPostgresGenerator at 2024-03-06T15:40:13.277446553.
+-- This code generated was by RbacViewPostgresGenerator at 2024-03-07T12:25:36.422351715.
 
 
 -- ============================================================================
@@ -194,7 +194,8 @@ create or replace function test_package_insert_permission_missing_tf()
     returns trigger
     language plpgsql as $$
 begin
-    raise exception 'insert into test_package not allowed for current subjects %', currentSubjectsUuids();
+    raise exception 'insert into test_package not allowed for current subjects % (%)',
+        currentSubjects(), currentSubjectsUuids();
 end; $$;
 
 create trigger test_package_insert_permission_check_tg

src/test/java/net/hostsharing/hsadminng/test/cust/TestCustomerRepositoryIntegrationTest.java

@@ -74,7 +74,7 @@ class TestCustomerRepositoryIntegrationTest extends ContextBasedTest {
             // then
             result.assertExceptionWithRootCauseMessage(
                     PersistenceException.class,
-                    "add-customer not permitted for test_customer#xxx.admin");
+                    "ERROR: insert into test_customer not allowed for current subjects {test_customer#xxx.admin}");
         }
 
         @Test
@@ -92,7 +92,7 @@ class TestCustomerRepositoryIntegrationTest extends ContextBasedTest {
             // then
             result.assertExceptionWithRootCauseMessage(
                     PersistenceException.class,
-                    "add-customer not permitted for customer-admin@xxx.example.com");
+                    "ERROR: insert into test_customer not allowed for current subjects {customer-admin@xxx.example.com}");
 
         }