2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * Modifications Copyright (C) 2019-2020 Nordix Foundation.
5 * ================================================================================
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * SPDX-License-Identifier: Apache-2.0
19 * ============LICENSE_END=========================================================
22 package org.onap.policy.apex.plugins.event.carrier.jms;
24 import java.io.Serializable;
25 import java.util.EnumMap;
27 import java.util.Properties;
28 import javax.jms.Connection;
29 import javax.jms.ConnectionFactory;
30 import javax.jms.Message;
31 import javax.jms.MessageProducer;
32 import javax.jms.Session;
33 import javax.jms.Topic;
34 import javax.naming.InitialContext;
35 import org.onap.policy.apex.service.engine.event.ApexEventException;
36 import org.onap.policy.apex.service.engine.event.ApexEventProducer;
37 import org.onap.policy.apex.service.engine.event.ApexEventRuntimeException;
38 import org.onap.policy.apex.service.engine.event.PeeredReference;
39 import org.onap.policy.apex.service.engine.event.SynchronousEventCache;
40 import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerParameters;
41 import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerPeeredMode;
42 import org.slf4j.Logger;
43 import org.slf4j.LoggerFactory;
46 * Concrete implementation of an Apex event producer that sends events using JMS.
48 * @author Liam Fallon (liam.fallon@ericsson.com)
50 public class ApexJmsProducer implements ApexEventProducer {
51 // Get a reference to the logger
52 private static final Logger LOGGER = LoggerFactory.getLogger(ApexJmsProducer.class);
54 // Recurring string constants
55 private static final String COULD_NOT_SEND_PREFIX = "could not send event \"";
56 private static final String FOR_PRODUCER_TAG = "\" for producer (";
57 private static final String JMS_MESSAGE_PRODUCER_TAG = "\" on JMS message producer ";
59 // The JMS parameters read from the parameter service
60 private JmsCarrierTechnologyParameters jmsProducerProperties;
62 // The connection to the JMS server
63 private Connection connection;
65 // The JMS session on which we will send events
66 private Session jmsSession;
68 // The producer on which we will send events
69 private MessageProducer messageProducer;
71 // The name for this producer
72 private String name = null;
74 // The peer references for this event handler
75 private Map<EventHandlerPeeredMode, PeeredReference> peerReferenceMap = new EnumMap<>(EventHandlerPeeredMode.class);
81 public void init(final String producerName, final EventHandlerParameters producerParameters)
82 throws ApexEventException {
83 this.name = producerName;
85 // Check and get the JMS Properties
86 if (!(producerParameters.getCarrierTechnologyParameters() instanceof JmsCarrierTechnologyParameters)) {
87 final String errorMessage = "specified producer properties are not applicable to a JMS producer ("
89 throw new ApexEventException(errorMessage);
91 jmsProducerProperties = (JmsCarrierTechnologyParameters) producerParameters.getCarrierTechnologyParameters();
93 // Look up the JMS connection factory
94 InitialContext jmsContext = null;
95 ConnectionFactory connectionFactory = null;
97 jmsContext = new InitialContext(jmsProducerProperties.getJmsProducerProperties());
98 connectionFactory = (ConnectionFactory) jmsContext.lookup(jmsProducerProperties.getConnectionFactory());
100 // Check if we actually got a connection factory
101 if (connectionFactory == null) {
102 throw new IllegalArgumentException(
103 "JMS context lookup of \"" + jmsProducerProperties.getConnectionFactory()
104 + "\" returned null for producer (" + this.name + ")");
106 } catch (final Exception e) {
107 final String errorMessage = "lookup of JMS connection factory \""
108 + jmsProducerProperties.getConnectionFactory() + "\" failed for JMS producer properties \""
109 + jmsProducerProperties.getJmsConsumerProperties() + FOR_PRODUCER_TAG + this.name + ")";
110 throw new ApexEventException(errorMessage, e);
113 // Lookup the topic on which we will send events
114 Topic jmsOutgoingTopic;
116 jmsOutgoingTopic = (Topic) jmsContext.lookup(jmsProducerProperties.getProducerTopic());
118 // Check if we actually got a topic
119 if (jmsOutgoingTopic == null) {
120 throw new IllegalArgumentException("JMS context lookup of \"" + jmsProducerProperties.getProducerTopic()
121 + "\" returned null for producer (" + this.name + ")");
123 } catch (final Exception e) {
124 final String errorMessage = "lookup of JMS topic \"" + jmsProducerProperties.getProducerTopic()
125 + "\" failed for JMS producer properties \""
126 + jmsProducerProperties.getJmsProducerProperties() + FOR_PRODUCER_TAG + this.name + ")";
127 throw new ApexEventException(errorMessage, e);
130 // Create and start a connection to the JMS server
132 connection = connectionFactory.createConnection(jmsProducerProperties.getSecurityPrincipal(),
133 jmsProducerProperties.getSecurityCredentials());
135 } catch (final Exception e) {
136 final String errorMessage = "connection to JMS server failed for JMS properties \""
137 + jmsProducerProperties.getJmsConsumerProperties() + FOR_PRODUCER_TAG + this.name + ")";
138 throw new ApexEventException(errorMessage, e);
141 // Create a JMS session for sending events
143 jmsSession = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
144 } catch (final Exception e) {
145 final String errorMessage = "creation of session to JMS server failed for JMS properties \""
146 + jmsProducerProperties.getJmsConsumerProperties() + FOR_PRODUCER_TAG + this.name + ")";
147 throw new ApexEventException(errorMessage, e);
150 // Create a JMS message producer for sending events
152 messageProducer = jmsSession.createProducer(jmsOutgoingTopic);
153 } catch (final Exception e) {
154 final String errorMessage = "creation of producer for sending events "
155 + "to JMS server failed for JMS properties \""
156 + jmsProducerProperties.getJmsConsumerProperties() + "\"";
157 throw new ApexEventException(errorMessage, e);
165 public String getName() {
173 public PeeredReference getPeeredReference(final EventHandlerPeeredMode peeredMode) {
174 return peerReferenceMap.get(peeredMode);
181 public void setPeeredReference(final EventHandlerPeeredMode peeredMode, final PeeredReference peeredReference) {
182 peerReferenceMap.put(peeredMode, peeredReference);
189 public void sendEvent(final long executionId, final Properties executionProperties, final String eventname,
190 final Object eventObject) {
191 // Check if this is a synchronized event, if so we have received a reply
192 final SynchronousEventCache synchronousEventCache = (SynchronousEventCache) peerReferenceMap
193 .get(EventHandlerPeeredMode.SYNCHRONOUS);
194 if (synchronousEventCache != null) {
195 synchronousEventCache.removeCachedEventToApexIfExists(executionId);
198 // Check if the object to be sent is serializable
199 if (!Serializable.class.isAssignableFrom(eventObject.getClass())) {
200 final String errorMessage = COULD_NOT_SEND_PREFIX + eventname + JMS_MESSAGE_PRODUCER_TAG + this.name
201 + ", object of type \"" + eventObject.getClass().getName() + "\" is not serializable";
202 LOGGER.warn(errorMessage);
203 throw new ApexEventRuntimeException(errorMessage);
206 // The JMS message to send is constructed using the JMS session
207 Message jmsMessage = null;
209 // Check the type of JMS message to send
210 if (jmsProducerProperties.isObjectMessageSending()) {
211 // We should send a JMS Object Message
213 jmsMessage = jmsSession.createObjectMessage((Serializable) eventObject);
214 } catch (final Exception e) {
215 final String errorMessage = COULD_NOT_SEND_PREFIX + eventname + JMS_MESSAGE_PRODUCER_TAG + this.name
216 + ", could not create JMS Object Message for object \"" + eventObject;
217 LOGGER.warn(errorMessage, e);
218 throw new ApexEventRuntimeException(errorMessage);
221 // We should send a JMS Text Message
223 jmsMessage = jmsSession.createTextMessage(eventObject.toString());
224 } catch (final Exception e) {
225 final String errorMessage = COULD_NOT_SEND_PREFIX + eventname + JMS_MESSAGE_PRODUCER_TAG + this.name
226 + ", could not create JMS Text Message for object \"" + eventObject;
227 LOGGER.warn(errorMessage, e);
228 throw new ApexEventRuntimeException(errorMessage);
233 messageProducer.send(jmsMessage);
234 } catch (final Exception e) {
235 final String errorMessage = COULD_NOT_SEND_PREFIX + eventname + JMS_MESSAGE_PRODUCER_TAG + this.name
236 + ", send failed for object \"" + eventObject;
237 LOGGER.warn(errorMessage, e);
238 throw new ApexEventRuntimeException(errorMessage);
247 // Close the message producer
249 messageProducer.close();
250 } catch (final Exception e) {
251 final String errorMessage = "failed to close JMS message producer " + this.name + " for sending messages";
252 LOGGER.warn(errorMessage, e);
258 } catch (final Exception e) {
259 final String errorMessage = "failed to close the JMS session for " + this.name + " for sending messages";
260 LOGGER.warn(errorMessage, e);
263 // Close the connection to the JMS server
266 } catch (final Exception e) {
267 final String errorMessage = "close of connection to the JMS server for " + this.name + " failed";
268 LOGGER.warn(errorMessage, e);