1 files changed, 85 insertions, 0 deletions
diff --git a/common-be/src/main/java/org/openecomp/sdc/be/workers/Manager.java b/common-be/src/main/java/org/openecomp/sdc/be/workers/Manager.java
new file mode 100644
index 0000000000..76d2cc5a6d
--- /dev/null
+++ b/common-be/src/main/java/org/openecomp/sdc/be/workers/Manager.java
@@ -0,0 +1,85 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.workers;
+
+import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.util.concurrent.*;
+
+/**
+ * Created by michael on 6/24/2016.
+ */
+public class Manager<T extends Job, E> {
+	private static Logger log = LoggerFactory.getLogger(Manager.class.getName());
+	private ExecutorService executor;
+	private LinkedBlockingQueue<T> inputQueue;
+	private LinkedBlockingQueue<E> outputQueue;
+	private int numberOfWorkers;
+
+	public void init(int numberOfWorkers) {
+		log.debug("initializing workers, creating {} workers", numberOfWorkers);
+		this.numberOfWorkers = numberOfWorkers;
+		final ThreadFactory threadFactory = new ThreadFactoryBuilder().setNameFormat("Worker-%d").build();
+		this.executor = Executors.newFixedThreadPool(numberOfWorkers, threadFactory);
+		this.inputQueue = new LinkedBlockingQueue<T>();
+		this.outputQueue = new LinkedBlockingQueue<E>();
+	}
+
+	public void addJob(T job) {
+		log.trace("job add to input queue");
+		this.inputQueue.add(job);
+	}
+
+	public LinkedBlockingQueue<E> start() {
+		for (int i = 0; i < numberOfWorkers; i++) {
+			String workerName = "worker-" + i;
+			log.debug("starting worker:{}", workerName);
+			this.executor.submit(new Worker(workerName, this.inputQueue, this.outputQueue));
+		}
+		executor.shutdown();
+		try {
+			if (!executor.awaitTermination(30, TimeUnit.MINUTES)) {
+				log.error("timer elapsed while waiting for the worker's to finish. ");
+			}
+			log.debug("all workers finished");
+		} catch (InterruptedException e) {
+			log.error("failed while waiting for", e);
+		}
+		return outputQueue;
+	}
+
+	//
+	// public static void main(String[] args) {
+	// ExecutorService executor = Executors.newFixedThreadPool(NTHREDS);
+	// for (int i = 0; i < 500; i++) {
+	// Runnable worker = new MyRunnable(10000000L + i);
+	// executor.execute(worker);
+	// }
+	// // This will make the executor accept no new threads
+	// // and finish all existing threads in the queue
+	// executor.shutdown();
+	// // Wait until all threads are finish
+	// executor.awaitTermination();
+	// System.out.println("Finished all threads");
+	// }
+	// }
+}