Feature action cleanup (#704)

* Initial commit
* Tenant configuration enhancements
* Update REST documentation
* Enhance System Configuration view in UI
* Add unit tests
* Fix delete query for H2
* Improve test coverage
* Fix Sonar findings
* Fix Hawkbit bot findings
* Fix PR review findings
* Fix peer review findings

Signed-off-by: Stefan Behl <stefan.behl@bosch-si.com>

hawkbit-repository/hawkbit-repository-api/src/main/java/org/eclipse/hawkbit/repository/DeploymentManagement.java

@@ -10,6 +10,7 @@ package org.eclipse.hawkbit.repository;
 
 import java.util.Collection;
 import java.util.Optional;
+import java.util.Set;
 
 import javax.validation.constraints.NotEmpty;
 import javax.validation.constraints.NotNull;
@@ -457,4 +458,19 @@ public interface DeploymentManagement {
      *             if target with given ID does not exist
      */
     Optional<DistributionSet> getInstalledDistributionSet(@NotEmpty String controllerId);
+
+    /**
+     * Deletes actions which match one of the given action status and which have
+     * not been modified since the given (absolute) time-stamp.
+     * 
+     * @param status
+     *            Set of action status.
+     * @param lastModified
+     *            A time-stamp in milliseconds.
+     * 
+     * @return The number of action entries that were deleted.
+     */
+    @PreAuthorize(SpringEvalExpressions.IS_SYSTEM_CODE)
+    int deleteActionsByStatusAndLastModifiedBefore(@NotNull Set<Action.Status> status, long lastModified);
+
 }

hawkbit-repository/hawkbit-repository-api/src/main/java/org/eclipse/hawkbit/tenancy/configuration/TenantConfigurationProperties.java

@@ -61,6 +61,7 @@ public class TenantConfigurationProperties {
      *
      */
     public static class TenantConfigurationKey {
+
         /**
          * Header based authentication enabled.
          */
@@ -70,6 +71,7 @@ public class TenantConfigurationProperties {
          * Header based authentication authority name.
          */
         public static final String AUTHENTICATION_MODE_HEADER_AUTHORITY_NAME = "authentication.header.authority";
+
         /**
          * Target token based authentication enabled.
          */
@@ -125,6 +127,21 @@ public class TenantConfigurationProperties {
          */
         public static final String REPOSITORY_ACTIONS_AUTOCLOSE_ENABLED = "repository.actions.autoclose.enabled";
 
+        /**
+         * Switch to enable/disable automatic action cleanup.
+         */
+        public static final String ACTION_CLEANUP_ENABLED = "action.cleanup.enabled";
+
+        /**
+         * Specifies the action expiry in milli-seconds.
+         */
+        public static final String ACTION_CLEANUP_ACTION_EXPIRY = "action.cleanup.actionExpiry";
+
+        /**
+         * Specifies the action status.
+         */
+        public static final String ACTION_CLEANUP_ACTION_STATUS = "action.cleanup.actionStatus";
+
         private String keyName;
         private String defaultValue = "";
         private Class<?> dataType = String.class;

hawkbit-repository/hawkbit-repository-api/src/main/java/org/eclipse/hawkbit/tenancy/configuration/validator/TenantConfigurationLongValidator.java

@@ -0,0 +1,21 @@
+/**
+ * Copyright (c) 2018 Bosch Software Innovations GmbH and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.eclipse.hawkbit.tenancy.configuration.validator;
+
+/**
+ * Specific tenant configuration validator, which validates that the given value
+ * is a {@link Long}.
+ */
+public class TenantConfigurationLongValidator implements TenantConfigurationValidator {
+
+    @Override
+    public Class<?> validateToClass() {
+        return Long.class;
+    }
+}