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;
35 * Concrete implementation of an Apex event requestor that manages the producer side of a REST request.
37 * @author Liam Fallon (liam.fallon@ericsson.com)
40 public class ApexRestRequestorProducer extends ApexPluginsEventProducer {
41 // The number of events sent
42 private int eventsSent = 0;
48 public void init(final String producerName, final EventHandlerParameters producerParameters)
49 throws ApexEventException {
50 this.name = producerName;
52 // Check and get the REST Properties
53 if (!(producerParameters
54 .getCarrierTechnologyParameters() instanceof RestRequestorCarrierTechnologyParameters)) {
55 final String errorMessage =
56 "specified producer properties are not applicable to REST requestor producer (" + this.name + ")";
57 throw new ApexEventException(errorMessage);
59 RestRequestorCarrierTechnologyParameters restProducerProperties =
60 (RestRequestorCarrierTechnologyParameters) producerParameters.getCarrierTechnologyParameters();
62 // Check if we are in peered mode
63 if (!producerParameters.isPeeredMode(EventHandlerPeeredMode.REQUESTOR)) {
64 final String errorMessage = "REST Requestor producer (" + this.name
65 + ") must run in peered requestor mode with a REST Requestor consumer";
66 throw new ApexEventException(errorMessage);
69 // Check if the HTTP URL has been set
70 if (restProducerProperties.getUrl() != null) {
71 final String errorMessage = "URL may not be specified on REST Requestor producer (" + this.name + ")";
72 throw new ApexEventException(errorMessage);
75 // Check if the HTTP method has been set
76 if (restProducerProperties.getHttpMethod() != null) {
77 final String errorMessage =
78 "HTTP method may not be specified on REST Requestor producer (" + this.name + ")";
79 throw new ApexEventException(errorMessage);
84 * Get the number of events sent to date.
86 * @return the number of events received
88 public int getEventsSent() {
96 public void sendEvent(final long executionId, final Properties executionProperties, final String eventName,
98 super.sendEvent(executionId, executionProperties, eventName, event);
100 // Find the peered consumer for this producer
101 final PeeredReference peeredRequestorReference = peerReferenceMap.get(EventHandlerPeeredMode.REQUESTOR);
102 if (peeredRequestorReference != null) {
103 // Find the REST Response Consumer that will handle this request
104 final ApexEventConsumer consumer = peeredRequestorReference.getPeeredConsumer();
105 if (!(consumer instanceof ApexRestRequestorConsumer)) {
106 final String errorMessage = "send of event failed,"
107 + " REST response consumer is not an instance of ApexRestRequestorConsumer\n" + event;
108 throw new ApexEventRuntimeException(errorMessage);
111 // Use the consumer to handle this event
112 final ApexRestRequestorConsumer restRequstConsumer = (ApexRestRequestorConsumer) consumer;
114 .processRestRequest(new ApexRestRequest(executionId, executionProperties, eventName, event));
118 // No peered consumer defined
119 final String errorMessage = "send of event failed," + " REST response consumer is not defined\n" + event;
120 throw new ApexEventRuntimeException(errorMessage);
129 // For REST requestor, all the implementation is in the consumer