1 files changed, 65 insertions, 0 deletions
diff --git a/appc-client/client-lib/src/main/java/org/openecomp/appc/client/impl/core/TaskQueue.java b/appc-client/client-lib/src/main/java/org/openecomp/appc/client/impl/core/TaskQueue.java
new file mode 100644
index 000000000..e75d33f91
--- /dev/null
+++ b/appc-client/client-lib/src/main/java/org/openecomp/appc/client/impl/core/TaskQueue.java
@@ -0,0 +1,65 @@
+/*-
+ * ============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.openecomp.appc.client.impl.core;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+
+/** Responsible to ensure synchronous handling of responses and timouts.
+ */
+class TaskQueue implements Runnable{
+
+    private final BlockingQueue<Runnable> queue = new LinkedBlockingQueue<>();
+    private final EELFLogger LOG = EELFManager.getInstance().getLogger(TaskQueue.class);
+
+    private boolean isShutdown;
+
+    synchronized void addTask(Runnable task) throws InterruptedException {
+            queue.put(task);
+    }
+
+    public void run() {
+        Runnable task;
+        while(!Thread.currentThread().isInterrupted() && !isShutdown){
+            try {
+                task = queue.take();
+                task.run();
+            } catch (InterruptedException e) {
+                LOG.error("could not take task from queue", e);
+            } catch (RuntimeException e) {
+                LOG.error("could not run task", e);
+            }
+            LOG.info("THR# <" + Thread.currentThread().getId() + "> shutdown indicator " + isShutdown);
+        }
+        LOG.info("THR# <" + Thread.currentThread().getId() + "> in shutdown process.");
+    }
+
+    void stopQueue(){
+        isShutdown = true;
+    }
+}