2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021 Nordix Foundation.
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.clamp.controlloop.participant.intermediary.comm;
23 import java.util.function.Consumer;
24 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantMessage;
25 import org.onap.policy.clamp.controlloop.participant.intermediary.handler.ParticipantHandler;
26 import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
27 import org.onap.policy.common.endpoints.listeners.ScoListener;
28 import org.onap.policy.common.utils.coder.StandardCoderObject;
31 * Abstract Listener for Participant messages sent by CLAMP.
33 public abstract class ParticipantListener<T extends ParticipantMessage> extends ScoListener<T> {
35 private final ParticipantHandler participantHandler;
36 private final Consumer<T> consumer;
39 * Constructs the object.
41 * @param clazz class of message this handles
42 * @param participantHandler ParticipantHandler
43 * @param consumer function that handles the message
45 protected ParticipantListener(Class<T> clazz, ParticipantHandler participantHandler, Consumer<T> consumer) {
47 this.participantHandler = participantHandler;
48 this.consumer = consumer;
52 public void onTopicEvent(CommInfrastructure infra, String topic, StandardCoderObject sco, T message) {
53 if (participantHandler.appliesTo(message)) {
54 consumer.accept(message);