Moving all files to root directory

Change-Id: Ica5535fd6ec85f350fe1640b42137b49f83f10f0
Signed-off-by: Patrick Brady <pb071s@att.com>

7 files changed, 402 insertions, 0 deletions

diff --git a/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/ExecutionQueueService.java b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/ExecutionQueueService.java
new file mode 100644
index 000000000..c93920083
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/ExecutionQueueService.java
@@ -0,0 +1,32 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * 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.appc.executionqueue;
+
+import java.util.concurrent.TimeUnit;
+
+import org.openecomp.appc.exceptions.APPCException;
+
+public interface ExecutionQueueService<M extends Runnable> {
+    void putMessage(M message) throws APPCException;
+    void putMessage(M message, long timeout, TimeUnit unit) throws APPCException;
+    void registerMessageExpirationListener(MessageExpirationListener listener);
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/MessageExpirationListener.java b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/MessageExpirationListener.java
new file mode 100644
index 000000000..cd5cbeab1
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/MessageExpirationListener.java
@@ -0,0 +1,26 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * 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.appc.executionqueue;
+
+public interface MessageExpirationListener<M> {
+    void onMessageExpiration(M message);
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/helper/Util.java b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/helper/Util.java
new file mode 100644
index 000000000..835e881aa
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/helper/Util.java
@@ -0,0 +1,71 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * 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.appc.executionqueue.helper;
+
+import java.util.concurrent.Executors;
+import java.util.concurrent.ThreadFactory;
+
+import org.openecomp.appc.configuration.Configuration;
+import org.openecomp.appc.configuration.ConfigurationFactory;
+
+public class Util {
+
+    private static final Configuration configuration = ConfigurationFactory.getConfiguration();
+
+    public static int DEFAULT_QUEUE_SIZE = 10;
+    public static int DEFAULT_THREADPOOL_SIZE = 10;
+
+    public static int getExecutionQueSize(){
+        String sizeStr = configuration.getProperty("appc.dispatcher.executionqueue.backlog.size", String.valueOf(DEFAULT_QUEUE_SIZE));
+        int size = DEFAULT_QUEUE_SIZE;
+        try{
+            size = Integer.parseInt(sizeStr);
+        }
+        catch (NumberFormatException e){
+
+        }
+        return size;
+    }
+
+    public static int getThreadPoolSize(){
+        String sizeStr = configuration.getProperty("appc.dispatcher.executionqueue.threadpool.size", String.valueOf(DEFAULT_THREADPOOL_SIZE));
+        int size = DEFAULT_THREADPOOL_SIZE;
+        try{
+            size = Integer.parseInt(sizeStr);
+        }
+        catch (NumberFormatException e){
+
+        }
+        return size;
+    }
+
+    public static ThreadFactory getThreadFactory(final boolean isDaemon){
+        return new ThreadFactory() {
+            final ThreadFactory factory = Executors.defaultThreadFactory();
+            public Thread newThread(Runnable r) {
+                Thread t = factory.newThread(r);
+                t.setDaemon(isDaemon);
+                return t;
+            }
+        };
+    }
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/ExecutionQueueServiceFactory.java b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/ExecutionQueueServiceFactory.java
new file mode 100644
index 000000000..01e4358e9
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/ExecutionQueueServiceFactory.java
@@ -0,0 +1,40 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * 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.appc.executionqueue.impl;
+
+import org.openecomp.appc.executionqueue.ExecutionQueueService;
+
+public class ExecutionQueueServiceFactory {
+
+    private static ExecutionQueueService executionQueueService =null;
+
+    public static ExecutionQueueService getExecutionQueueService(){
+        if(executionQueueService == null){
+            synchronized (ExecutionQueueServiceFactory.class){
+                if(executionQueueService == null)
+                    executionQueueService = new ExecutionQueueServiceImpl();
+            }
+        }
+        return executionQueueService;
+    }
+
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/ExecutionQueueServiceImpl.java b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/ExecutionQueueServiceImpl.java
new file mode 100644
index 000000000..c2be1b4ac
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/ExecutionQueueServiceImpl.java
@@ -0,0 +1,83 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * 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.appc.executionqueue.impl;
+
+import java.util.Calendar;
+import java.util.Date;
+import java.util.concurrent.TimeUnit;
+
+import org.openecomp.appc.exceptions.APPCException;
+import org.openecomp.appc.executionqueue.ExecutionQueueService;
+import org.openecomp.appc.executionqueue.MessageExpirationListener;
+import org.openecomp.appc.executionqueue.impl.object.QueueMessage;
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+public class ExecutionQueueServiceImpl<M extends Runnable> implements ExecutionQueueService<M> {
+
+    private static final EELFLogger logger =
+            EELFManager.getInstance().getLogger(ExecutionQueueServiceImpl.class);
+
+    ExecutionQueueServiceImpl(){
+
+    }
+
+    @Override
+    public void putMessage(M message) throws APPCException {
+         this.putMessage(message,-1,null);
+    }
+
+    @Override
+    public void putMessage(M message, long timeout, TimeUnit unit) throws APPCException{
+        QueueMessage queueMessage = null;
+
+        try {
+            Date expirationTime = calculateExpirationTime(timeout,unit);
+            queueMessage = new QueueMessage(message,expirationTime);
+            QueueManager queueManager = QueueManager.getInstance();
+            boolean enqueueTask = queueManager.enqueueTask(queueMessage);
+            if(!enqueueTask){
+                throw new APPCException("failed to put message in queue");
+            }
+        } catch (Exception e) {
+            logger.error("Error in putMessage method of ExecutionQueueServiceImpl" + e.getMessage());
+            throw new APPCException(e);
+        }
+    }
+
+    @Override
+    public void registerMessageExpirationListener(MessageExpirationListener listener) {
+        QueueManager.getInstance().setListener(listener);
+    }
+
+    private Date calculateExpirationTime(long timeToLive, TimeUnit unit) {
+        Date expirationTime = null;
+        if(timeToLive > 0){
+            long currentTime = System.currentTimeMillis();
+            Calendar cal = Calendar.getInstance();
+            cal.setTimeInMillis(currentTime + unit.toMillis(timeToLive));
+            expirationTime = cal.getTime();
+        }
+        return expirationTime;
+    }
+
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/QueueManager.java b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/QueueManager.java
new file mode 100644
index 000000000..2d4907fa1
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/QueueManager.java
@@ -0,0 +1,108 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * 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.appc.executionqueue.impl;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.LinkedBlockingQueue;
+
+import org.openecomp.appc.executionqueue.MessageExpirationListener;
+import org.openecomp.appc.executionqueue.helper.Util;
+import org.openecomp.appc.executionqueue.impl.object.QueueMessage;
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+public class QueueManager {
+
+    private LinkedBlockingQueue<QueueMessage> queue;
+
+    private MessageExpirationListener listener;
+
+    private static int MAX_QUEUE_SIZE = Util.getExecutionQueSize();
+
+    private static int MAX_THREAD_SIZE = Util.getThreadPoolSize();
+
+    private ExecutorService messageExecutor;
+
+    private static final EELFLogger logger =
+            EELFManager.getInstance().getLogger(QueueManager.class);
+
+    private QueueManager(){
+        init();
+    }
+
+    private static class QueueManagerHolder {
+        private static final QueueManager INSTANCE = new QueueManager();
+    }
+
+    public static QueueManager getInstance() {
+        return QueueManagerHolder.INSTANCE;
+    }
+
+    private void init(){
+        queue = new LinkedBlockingQueue(MAX_QUEUE_SIZE);
+        messageExecutor = Executors.newFixedThreadPool(MAX_THREAD_SIZE,Util.getThreadFactory(true));
+
+        for(int i=0;i<MAX_THREAD_SIZE;i++){
+            messageExecutor.submit(new Runnable() {
+                @Override
+                public void run() {
+                    while (true){
+                        try{
+                            QueueMessage queueMessage = queue.take();
+                            if(messageExpired(queueMessage)){
+                                logger.debug("Message expired "+ queueMessage.getMessage());
+                                if(listener != null){
+                                    listener.onMessageExpiration(queueMessage.getMessage());
+                                }
+                                else{
+                                    logger.warn("Listener not available for expired message ");
+                                }
+                            }
+                            else{
+                                queueMessage.getMessage().run();
+                            }
+                        } catch (Exception e) {
+                            logger.error("Error in startMessagePolling method of ExecutionQueueServiceImpl" + e.getMessage());
+                        }
+                    }
+                }
+            });
+        }
+    }
+
+    public void setListener(MessageExpirationListener listener) {
+        this.listener = listener;
+    }
+
+    public boolean enqueueTask(QueueMessage queueMessage) {
+        return queue.offer(queueMessage);
+    }
+
+    private boolean messageExpired(QueueMessage queueMessage) {
+        if(queueMessage.getExpirationTime() != null){
+            return queueMessage.getExpirationTime().getTime() < System.currentTimeMillis();
+        }
+        return false;
+    }
+
+}
diff --git a/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/object/QueueMessage.java b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/object/QueueMessage.java
new file mode 100644
index 000000000..bbf805871
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/execution-queue-management-lib/src/main/java/org/openecomp/appc/executionqueue/impl/object/QueueMessage.java
@@ -0,0 +1,42 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : APP-C
+ * ================================================================================
+ * 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.appc.executionqueue.impl.object;
+
+import java.util.Date;
+
+
+public class QueueMessage<M extends Runnable> {
+    M message;
+    Date expirationTime;
+    public QueueMessage(M message, Date expirationTime){
+        this.message = message;
+        this.expirationTime = expirationTime;
+    }
+
+    public M getMessage() {
+        return message;
+    }
+
+    public Date getExpirationTime() {
+        return expirationTime;
+    }
+}