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.restrequestor;
24 import java.util.Properties;
26 import org.onap.policy.apex.service.engine.event.ApexEventConsumer;
27 import org.onap.policy.apex.service.engine.event.ApexEventException;
28 import org.onap.policy.apex.service.engine.event.ApexEventRuntimeException;
29 import org.onap.policy.apex.service.engine.event.ApexPluginsEventProducer;
30 import org.onap.policy.apex.service.engine.event.PeeredReference;
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 requestor that manages the producer side of a REST request.
39 * @author Liam Fallon (liam.fallon@ericsson.com)
42 public class ApexRestRequestorProducer extends ApexPluginsEventProducer {
43 private static final Logger LOGGER = LoggerFactory.getLogger(ApexRestRequestorProducer.class);
45 // The REST carrier properties
46 private RestRequestorCarrierTechnologyParameters restProducerProperties;
48 // The number of events sent
49 private int eventsSent = 0;
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
61 .getCarrierTechnologyParameters() instanceof RestRequestorCarrierTechnologyParameters)) {
62 final String errorMessage =
63 "specified producer properties are not applicable to REST requestor producer (" + this.name + ")";
64 LOGGER.warn(errorMessage);
65 throw new ApexEventException(errorMessage);
67 restProducerProperties =
68 (RestRequestorCarrierTechnologyParameters) producerParameters.getCarrierTechnologyParameters();
70 // Check if we are in peered mode
71 if (!producerParameters.isPeeredMode(EventHandlerPeeredMode.REQUESTOR)) {
72 final String errorMessage = "REST Requestor producer (" + this.name
73 + ") must run in peered requestor mode with a REST Requestor consumer";
74 LOGGER.warn(errorMessage);
75 throw new ApexEventException(errorMessage);
78 // Check if the HTTP URL has been set
79 if (restProducerProperties.getUrl() != null) {
80 final String errorMessage = "URL may not be specified on REST Requestor producer (" + this.name + ")";
81 LOGGER.warn(errorMessage);
82 throw new ApexEventException(errorMessage);
85 // Check if the HTTP method has been set
86 if (restProducerProperties.getHttpMethod() != null) {
87 final String errorMessage =
88 "HTTP method may not be specified on REST Requestor producer (" + this.name + ")";
89 LOGGER.warn(errorMessage);
90 throw new ApexEventException(errorMessage);
95 * Get the number of events sent to date.
97 * @return the number of events received
99 public int getEventsSent() {
107 public void sendEvent(final long executionId, final Properties executionProperties, final String eventName,
108 final Object event) {
109 super.sendEvent(executionId, executionProperties, eventName, event);
111 // Find the peered consumer for this producer
112 final PeeredReference peeredRequestorReference = peerReferenceMap.get(EventHandlerPeeredMode.REQUESTOR);
113 if (peeredRequestorReference != null) {
114 // Find the REST Response Consumer that will handle this request
115 final ApexEventConsumer consumer = peeredRequestorReference.getPeeredConsumer();
116 if (!(consumer instanceof ApexRestRequestorConsumer)) {
117 final String errorMessage = "send of event to URL \"" + restProducerProperties.getUrl() + "\" failed,"
118 + " REST response consumer is not an instance of ApexRestRequestorConsumer\n" + event;
119 LOGGER.warn(errorMessage);
120 throw new ApexEventRuntimeException(errorMessage);
123 // Use the consumer to handle this event
124 final ApexRestRequestorConsumer restRequstConsumer = (ApexRestRequestorConsumer) consumer;
126 .processRestRequest(new ApexRestRequest(executionId, executionProperties, eventName, event));
130 // No peered consumer defined
131 final String errorMessage = "send of event to URL \"" + restProducerProperties.getUrl() + "\" failed,"
132 + " REST response consumer is not defined\n" + event;
133 LOGGER.warn(errorMessage);
134 throw new ApexEventRuntimeException(errorMessage);
143 // For REST requestor, all the implementation is in the consumer