1 files changed, 56 insertions, 0 deletions
diff --git a/rulemgt/src/main/java/org/onap/holmes/rulemgt/controller/EngineInstanceController.java b/rulemgt/src/main/java/org/onap/holmes/rulemgt/controller/EngineInstanceController.java
new file mode 100644
index 0000000..2850708
--- /dev/null
+++ b/rulemgt/src/main/java/org/onap/holmes/rulemgt/controller/EngineInstanceController.java
@@ -0,0 +1,56 @@
+/**
+ * Copyright 2020 ZTE Corporation.
+ * <p>
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onap.holmes.rulemgt.controller;
+
+import org.jvnet.hk2.annotations.Service;
+import org.onap.holmes.common.engine.entity.EngineEntity;
+import org.onap.holmes.common.engine.service.EngineEntityService;
+
+import javax.annotation.PostConstruct;
+import javax.inject.Inject;
+import javax.inject.Named;
+import java.util.List;
+import java.util.Timer;
+import java.util.TimerTask;
+
+import static java.util.concurrent.TimeUnit.MINUTES;
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+@Service
+public class EngineInstanceController extends TimerTask {
+    private static final long INTERVAL = SECONDS.toMillis(15);
+    private static final long THRESHOLD = 3 * INTERVAL;
+    private Timer timer = new Timer("EngineInstanceController", true);
+
+    @Inject
+    private EngineEntityService engineEntityService;
+
+    @PostConstruct
+    public void initialize() {
+        timer.schedule(this, MINUTES.toMillis(1), INTERVAL);
+    }
+
+    @Override
+    public void run() {
+        List<EngineEntity> entityList = engineEntityService.getAllEntities();
+        for (EngineEntity entity : entityList) {
+            if (System.currentTimeMillis() - entity.getLastModified() > THRESHOLD) {
+                engineEntityService.deleteEntity(entity.getId());
+            }
+        }
+    }
+}