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;
25 import org.onap.policy.apex.service.engine.event.ApexEventConsumer;
26 import org.onap.policy.apex.service.engine.event.ApexEventException;
27 import org.onap.policy.apex.service.engine.event.ApexEventRuntimeException;
28 import org.onap.policy.apex.service.engine.event.ApexPluginsEventProducer;
29 import org.onap.policy.apex.service.engine.event.PeeredReference;
30 import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerParameters;
31 import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerPeeredMode;
34 * Concrete implementation of an Apex event requestor that manages the producer side of a REST request.
36 * @author Liam Fallon (liam.fallon@ericsson.com)
39 public class ApexRestRequestorProducer extends ApexPluginsEventProducer {
40 // The number of events sent
41 private int eventsSent = 0;
47 public void init(final String producerName, final EventHandlerParameters producerParameters)
48 throws ApexEventException {
49 this.name = producerName;
51 // Check and get the REST Properties
52 if (!(producerParameters
53 .getCarrierTechnologyParameters() instanceof RestRequestorCarrierTechnologyParameters)) {
54 final String errorMessage =
55 "specified producer properties are not applicable to REST requestor producer (" + this.name + ")";
56 throw new ApexEventException(errorMessage);
58 RestRequestorCarrierTechnologyParameters restProducerProperties =
59 (RestRequestorCarrierTechnologyParameters) producerParameters.getCarrierTechnologyParameters();
61 // Check if we are in peered mode
62 if (!producerParameters.isPeeredMode(EventHandlerPeeredMode.REQUESTOR)) {
63 final String errorMessage = "REST Requestor producer (" + this.name
64 + ") must run in peered requestor mode with a REST Requestor consumer";
65 throw new ApexEventException(errorMessage);
68 // Check if the HTTP URL has been set
69 if (restProducerProperties.getUrl() != null) {
70 final String errorMessage = "URL may not be specified on REST Requestor producer (" + this.name + ")";
71 throw new ApexEventException(errorMessage);
74 // Check if the HTTP method has been set
75 if (restProducerProperties.getHttpMethod() != null) {
76 final String errorMessage =
77 "HTTP method may not be specified on REST Requestor producer (" + this.name + ")";
78 throw new ApexEventException(errorMessage);
83 * Get the number of events sent to date.
85 * @return the number of events received
87 public int getEventsSent() {
95 public void sendEvent(final long executionId, final Properties executionProperties, final String eventName,
97 super.sendEvent(executionId, executionProperties, eventName, event);
99 // Find the peered consumer for this producer
100 final PeeredReference peeredRequestorReference = peerReferenceMap.get(EventHandlerPeeredMode.REQUESTOR);
101 if (peeredRequestorReference != null) {
102 // Find the REST Response Consumer that will handle this request
103 final ApexEventConsumer consumer = peeredRequestorReference.getPeeredConsumer();
104 if (!(consumer instanceof ApexRestRequestorConsumer)) {
105 final String errorMessage = "send of event failed,"
106 + " REST response consumer is not an instance of ApexRestRequestorConsumer\n" + event;
107 throw new ApexEventRuntimeException(errorMessage);
110 // Use the consumer to handle this event
111 final ApexRestRequestorConsumer restRequstConsumer = (ApexRestRequestorConsumer) consumer;
113 .processRestRequest(new ApexRestRequest(executionId, executionProperties, eventName, event));
117 // No peered consumer defined
118 final String errorMessage = "send of event failed," + " REST response consumer is not defined\n" + event;
119 throw new ApexEventRuntimeException(errorMessage);
128 // For REST requestor, all the implementation is in the consumer