Add resource collection /rest/v1/actions to Management REST API (#1299)

* Initial commit

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

* Added filtering by RSQL

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

* Support for filtering actions by distribution set, target, rollout

* Added REST docs

* Fixed REST docs

* Introduce a config property which allows to disable the actions endpoint

* Introduce representation mode parameter

* Adapt REST docs

* Incorporate review findings

* Adapt REST docs

* Improve unit tests

* Minor improvements

* Fix REST docs

* Fix REST docs

* Fix PR review findings

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

hawkbit-core/src/main/java/org/eclipse/hawkbit/repository/ActionFields.java

@@ -8,9 +8,12 @@
  */
 package org.eclipse.hawkbit.repository;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
 /**
  * Sort fields for {@link ActionRest}.
- *
  */
 public enum ActionFields implements FieldNameProvider, FieldValueConverter<ActionFields> {
 
@@ -18,22 +21,65 @@ public enum ActionFields implements FieldNameProvider, FieldValueConverter<Actio
      * The status field.
      */
     STATUS("active"),
+
+    /**
+     * The detailed action status
+     */
+    DETAILSTATUS("status"),
+
     /**
      * The id field.
      */
     ID("id"),
+
     /**
      * The weight field.
      */
-    WEIGHT("weight");
+    WEIGHT("weight"),
+
+    /**
+     * The target field
+     */
+    TARGET("target", TargetFields.ID.getFieldName(), TargetFields.NAME.getFieldName(),
+            TargetFields.UPDATESTATUS.getFieldName(), TargetFields.IPADDRESS.getFieldName()),
+
+    /**
+     * The distribution set field
+     */
+    DISTRIBUTIONSET("distributionSet", DistributionSetFields.ID.getFieldName(),
+            DistributionSetFields.NAME.getFieldName(), DistributionSetFields.VERSION.getFieldName(),
+            DistributionSetFields.TYPE.getFieldName()),
+
+    /**
+     * The rollout field
+     */
+    ROLLOUT("rollout", RolloutFields.ID.getFieldName(), RolloutFields.NAME.getFieldName()),
+
+    /**
+     * The rollout field
+     */
+    ROLLOUTGROUP("rolloutGroup", RolloutGroupFields.ID.getFieldName(), RolloutGroupFields.NAME.getFieldName());
 
     private static final String ACTIVE = "pending";
     private static final String INACTIVE = "finished";
 
     private final String fieldName;
 
+    private List<String> subEntityAttributes;
+
     private ActionFields(final String fieldName) {
         this.fieldName = fieldName;
+        this.subEntityAttributes = Collections.emptyList();
+    }
+
+    private ActionFields(final String fieldName, final String... subEntityAttributes) {
+        this.fieldName = fieldName;
+        this.subEntityAttributes = Arrays.asList(subEntityAttributes);
+    }
+
+    @Override
+    public List<String> getSubEntityAttributes() {
+        return subEntityAttributes;
     }
 
     @Override
@@ -49,6 +95,14 @@ public enum ActionFields implements FieldNameProvider, FieldValueConverter<Actio
         return value;
     }
 
+    @Override
+    public String[] possibleValues(final ActionFields e) {
+        if (STATUS == e) {
+            return new String[] { ACTIVE, INACTIVE };
+        }
+        return new String[0];
+    }
+
     private static Object convertStatusValue(final String value) {
         final String trimmedValue = value.trim();
         if (trimmedValue.equalsIgnoreCase(ACTIVE)) {
@@ -60,11 +114,4 @@ public enum ActionFields implements FieldNameProvider, FieldValueConverter<Actio
         }
     }
 
-    @Override
-    public String[] possibleValues(final ActionFields e) {
-        if (STATUS == e) {
-            return new String[] { ACTIVE, INACTIVE };
-        }
-        return new String[0];
-    }
 }