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