add MQ consumer

Issue-ID: HOLMES-47

Change-Id: I16109e668ca20819af2e53de906387ec12907e7b
Signed-off-by: Shiwei Tian <tian.shiwei@zte.com.cn>

1 files changed, 114 insertions, 0 deletions

diff --git a/engine-d/src/main/java/org/onap/holmes/engine/mqconsumer/MQConsumer.java b/engine-d/src/main/java/org/onap/holmes/engine/mqconsumer/MQConsumer.java
new file mode 100644
index 0000000..bd77312
--- /dev/null
+++ b/engine-d/src/main/java/org/onap/holmes/engine/mqconsumer/MQConsumer.java
@@ -0,0 +1,114 @@
+/**
+ * Copyright 2017 ZTE Corporation.
+ *
+ * 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.
+ */
+package org.onap.holmes.engine.mqconsumer;
+
+import java.io.Serializable;
+import javax.inject.Inject;
+import javax.jms.Connection;
+import javax.jms.ConnectionFactory;
+import javax.jms.Destination;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageConsumer;
+import javax.jms.MessageListener;
+import javax.jms.Session;
+import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.activemq.ActiveMQConnectionFactory;
+import org.apache.activemq.command.ActiveMQObjectMessage;
+import org.glassfish.hk2.api.IterableProvider;
+import org.jvnet.hk2.annotations.Service;
+import org.onap.holmes.common.api.stat.VesAlarm;
+import org.onap.holmes.common.config.MQConfig;
+import org.onap.holmes.common.constant.AlarmConst;
+import org.onap.holmes.engine.manager.DroolsEngine;
+
+@Service
+@Slf4j
+@NoArgsConstructor
+public class MQConsumer {
+
+    @Inject
+    private IterableProvider<MQConfig> mqConfigProvider;
+    private ConnectionFactory connectionFactory;
+    private ConnectionFactory connectionFactory1;
+    @Inject
+    private DroolsEngine engine;
+
+    public void registerAlarmTopicListener() {
+        String brokerURL =
+                "tcp://" + mqConfigProvider.get().brokerIp + ":" + mqConfigProvider.get().brokerPort;
+        connectionFactory = new ActiveMQConnectionFactory(mqConfigProvider.get().brokerUsername,
+                mqConfigProvider.get().brokerPassword, brokerURL);
+
+        AlarmMqMessageListener listener = new AlarmMqMessageListener();
+        listener.receive();
+    }
+    class AlarmMqMessageListener implements MessageListener {
+
+        private Connection connection = null;
+        private Session session = null;
+        private Destination destination = null;
+        private MessageConsumer consumer = null;
+
+        private void initialize() throws JMSException {
+            connection = connectionFactory.createConnection();
+            session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
+            destination = session.createTopic(AlarmConst.MQ_TOPIC_NAME_ALARM);
+            consumer = session.createConsumer(destination);
+            connection.start();
+        }
+
+        public void receive() {
+            try {
+                initialize();
+                consumer.setMessageListener(this);
+            } catch (JMSException e) {
+                log.error("Failed to connect to the MQ service : " + e.getMessage(), e);
+                try {
+                    close();
+                } catch (JMSException e1) {
+                    log.error("Failed close connection  " + e1.getMessage(), e1);
+                }
+            }
+        }
+
+        public void onMessage(Message arg0) {
+            ActiveMQObjectMessage objectMessage = (ActiveMQObjectMessage) arg0;
+            try {
+                Serializable object = objectMessage.getObject();
+                if (object instanceof VesAlarm) {
+                    VesAlarm vesAlarm = (VesAlarm) object;
+                    engine.putRaisedIntoStream(vesAlarm);
+                }
+            } catch (JMSException e) {
+                log.error("Failed get object : " + e.getMessage(), e);
+            }
+        }
+
+        private void close() throws JMSException {
+            if (consumer != null) {
+                consumer.close();
+            }
+            if (session != null) {
+                session.close();
+            }
+            if (connection != null) {
+                connection.close();
+            }
+        }
+    }
+}