1 files changed, 82 insertions, 0 deletions
diff --git a/appc-client/client-lib/src/main/java/org/onap/appc/client/impl/core/TimerServiceImpl.java b/appc-client/client-lib/src/main/java/org/onap/appc/client/impl/core/TimerServiceImpl.java
new file mode 100644
index 000000000..fa2d0804d
--- /dev/null
+++ b/appc-client/client-lib/src/main/java/org/onap/appc/client/impl/core/TimerServiceImpl.java
@@ -0,0 +1,82 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.client.impl.core;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+import java.util.List;
+import java.util.concurrent.*;
+
+class TimerServiceImpl implements ITimerService {
+
+    private final EELFLogger LOG = EELFManager.getInstance().getLogger(TimerServiceImpl.class);
+    private final ScheduledExecutorService scheduler = Executors.newSingleThreadScheduledExecutor();
+    private final ConcurrentHashMap<String, Future> timeOutEvents = new ConcurrentHashMap<>();
+    private final long responseTimeout;
+
+    TimerServiceImpl(long responseTimeout) {
+        this.responseTimeout = responseTimeout;
+    }
+
+    @Override
+    public synchronized void cancel(String correlationID) {
+        Future timeOutEvent = timeOutEvents.remove(correlationID);
+        if (timeOutEvent != null){
+            timeOutEvent.cancel(true);
+        }
+    }
+
+    @Override
+    public synchronized void add(String correlationID, ITimeoutHandler handler) {
+        Future timeOutEvent = scheduler.schedule(new HandleTimeout(correlationID, handler), responseTimeout, TimeUnit.MILLISECONDS);
+        timeOutEvents.put(correlationID, timeOutEvent);
+    }
+
+    @Override
+    public void shutdown() {
+        List<Runnable> listTask = scheduler.shutdownNow();
+        LOG.info("the amount of tasks that never commenced execution " + listTask.size());
+    }
+
+    private class HandleTimeout implements Runnable {
+
+        String correlationID;
+        ITimeoutHandler handler;
+
+        HandleTimeout(String correlationID, ITimeoutHandler handler) {
+            this.correlationID = correlationID;
+            this.handler = handler;
+        }
+
+        @Override
+        public void run(){
+            System.out.println("Timeout event of request " + correlationID);
+            handler.onTimeout();
+            timeOutEvents.remove(correlationID);
+        }
+    }
+
+}