2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2016-2018 Ericsson. All rights reserved.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.apex.plugins.event.protocol.jms;
23 import java.util.List;
25 import javax.jms.TextMessage;
27 import org.onap.policy.apex.service.engine.event.ApexEvent;
28 import org.onap.policy.apex.service.engine.event.ApexEventException;
29 import org.onap.policy.apex.service.engine.event.ApexEventRuntimeException;
30 import org.onap.policy.apex.service.engine.event.impl.jsonprotocolplugin.Apex2JSONEventConverter;
31 import org.slf4j.ext.XLogger;
32 import org.slf4j.ext.XLoggerFactory;
35 * The Class Apex2JMSTextEventConverter converts {@link ApexEvent} instances into string instances of
36 * {@link javax.jms.TextMessage} message events for JMS. It is a proxy for the built in
37 * {@link org.onap.policy.apex.service.engine.event.impl.jsonprotocolplugin.Apex2JSONEventConverter} plugin.
39 * @author Liam Fallon (liam.fallon@ericsson.com)
41 public final class Apex2JMSTextEventConverter extends Apex2JSONEventConverter {
42 private static final XLogger LOGGER = XLoggerFactory.getXLogger(Apex2JMSTextEventConverter.class);
45 * Constructor to create the Apex to JMS Object converter.
47 * @throws ApexEventException the apex event exception
49 public Apex2JMSTextEventConverter() throws ApexEventException {}
54 * @see org.onap.policy.apex.service.engine.event.ApexEventConverter#toApexEvent(java.lang.String, java.lang.Object)
57 public List<ApexEvent> toApexEvent(final String eventName, final Object eventObject) throws ApexEventException {
58 // Check if this is an TextMessage from JMS
59 if (!(eventObject instanceof TextMessage)) {
60 final String errorMessage = "message \"" + eventObject + "\" received from JMS is not an instance of \""
61 + TextMessage.class.getCanonicalName() + "\"";
62 LOGGER.debug(errorMessage);
63 throw new ApexEventRuntimeException(errorMessage);
66 // Get the string from the object message
67 final TextMessage textMessage = (TextMessage) eventObject;
70 jmsString = textMessage.getText();
71 } catch (final Exception e) {
72 final String errorMessage = "object contained in message \"" + eventObject
73 + "\" received from JMS could not be retrieved as a Java String";
74 LOGGER.debug(errorMessage, e);
75 throw new ApexEventRuntimeException(errorMessage, e);
78 // Use the generic JSON plugin from here
79 return super.toApexEvent(eventName, jmsString);
86 * org.onap.policy.apex.service.engine.event.ApexEventConverter#fromApexEvent(org.onap.policy.apex.service.engine.
90 public Object fromApexEvent(final ApexEvent apexEvent) throws ApexEventException {
91 // Check the Apex event
92 if (apexEvent == null) {
93 LOGGER.warn("event processing failed, Apex event is null");
94 throw new ApexEventException("event processing failed, Apex event is null");
97 // Return the Apex event as a string object
98 return super.fromApexEvent(apexEvent);