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.carrier.restserver;
23 import java.util.EnumMap;
25 import java.util.Properties;
26 import org.onap.policy.apex.service.engine.event.ApexEventException;
27 import org.onap.policy.apex.service.engine.event.ApexEventProducer;
28 import org.onap.policy.apex.service.engine.event.PeeredReference;
29 import org.onap.policy.apex.service.engine.event.SynchronousEventCache;
30 import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerParameters;
31 import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerPeeredMode;
32 import org.slf4j.Logger;
33 import org.slf4j.LoggerFactory;
36 * Concrete implementation of an Apex event producer that sends events using REST.
38 * @author Liam Fallon (liam.fallon@ericsson.com)
41 public class ApexRestServerProducer implements ApexEventProducer {
42 private static final Logger LOGGER = LoggerFactory.getLogger(ApexRestServerProducer.class);
44 // The name for this producer
45 private String name = null;
47 // The peer references for this event handler
48 private Map<EventHandlerPeeredMode, PeeredReference> peerReferenceMap = new EnumMap<>(EventHandlerPeeredMode.class);
54 public void init(final String producerName, final EventHandlerParameters producerParameters)
55 throws ApexEventException {
56 this.name = producerName;
58 // Check and get the REST Properties
59 if (!(producerParameters.getCarrierTechnologyParameters() instanceof RestServerCarrierTechnologyParameters)) {
60 final String errorMessage =
61 "specified producer properties are not applicable to REST Server producer (" + this.name + ")";
62 LOGGER.warn(errorMessage);
63 throw new ApexEventException(errorMessage);
66 // The REST carrier properties
67 RestServerCarrierTechnologyParameters restProducerProperties =
68 (RestServerCarrierTechnologyParameters) producerParameters.getCarrierTechnologyParameters();
70 // Check if host and port are defined
71 if (restProducerProperties.getHost() != null || restProducerProperties.getPort() != -1
72 || restProducerProperties.isStandalone()) {
73 final String errorMessage =
74 "the parameters \"host\", \"port\", and \"standalone\" are illegal on REST Server producer ("
76 LOGGER.warn(errorMessage);
77 throw new ApexEventException(errorMessage);
80 // Check if we are in synchronous mode
81 if (!producerParameters.isPeeredMode(EventHandlerPeeredMode.SYNCHRONOUS)) {
82 final String errorMessage =
83 "REST Server producer (" + this.name + ") must run in synchronous mode with a REST Server consumer";
84 LOGGER.warn(errorMessage);
85 throw new ApexEventException(errorMessage);
93 public String getName() {
101 public PeeredReference getPeeredReference(final EventHandlerPeeredMode peeredMode) {
102 return peerReferenceMap.get(peeredMode);
109 public void setPeeredReference(final EventHandlerPeeredMode peeredMode, final PeeredReference peeredReference) {
110 peerReferenceMap.put(peeredMode, peeredReference);
117 public void sendEvent(final long executionId, final Properties executionProperties, final String eventName,
118 final Object event) {
119 if (LOGGER.isDebugEnabled()) {
120 String message = name + ": event " + executionId + ':' + eventName + " recevied from Apex, event=" + event;
121 LOGGER.debug(message);
124 // If we are not synchronized, then exit
125 final SynchronousEventCache synchronousEventCache =
126 (SynchronousEventCache) peerReferenceMap.get(EventHandlerPeeredMode.SYNCHRONOUS);
127 if (synchronousEventCache == null) {
131 // We see all events on the receiver, even those that are not replies to events sent by the synchronized
132 // consumer of this producer, ignore those
134 if (!synchronousEventCache.existsEventToApex(executionId)) {
138 if (LOGGER.isDebugEnabled()) {
139 LOGGER.debug(name + ": event " + executionId + ':' + eventName + " is a reply to a REST server call from "
143 // Add the event to the received event cache
144 synchronousEventCache.cacheSynchronizedEventFromApex(executionId, event);
152 // Implementation not required on this class