2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021,2023 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.acm.participant.intermediary.comm;
23 import java.io.Closeable;
24 import java.util.TimerTask;
25 import java.util.concurrent.Executors;
26 import java.util.concurrent.ScheduledExecutorService;
27 import java.util.concurrent.TimeUnit;
28 import org.onap.policy.clamp.acm.participant.intermediary.handler.ParticipantHandler;
29 import org.onap.policy.clamp.acm.participant.intermediary.parameters.ParticipantParameters;
30 import org.slf4j.Logger;
31 import org.slf4j.LoggerFactory;
32 import org.springframework.context.event.ContextRefreshedEvent;
33 import org.springframework.context.event.EventListener;
34 import org.springframework.stereotype.Component;
37 * This class sends messages from participants to CLAMP.
40 public class MessageSender extends TimerTask implements Closeable {
41 private static final Logger LOGGER = LoggerFactory.getLogger(MessageSender.class);
43 private final ParticipantHandler participantHandler;
44 private final ScheduledExecutorService timerPool;
45 private final long interval;
48 * Constructor, set the publisher.
50 * @param participantHandler the participant handler to use for gathering information
51 * @param parameters the parameters of the participant
53 public MessageSender(ParticipantHandler participantHandler, ParticipantParameters parameters) {
54 this.participantHandler = participantHandler;
57 timerPool = makeTimerPool();
58 interval = parameters.getIntermediaryParameters().getReportingTimeIntervalMs();
62 public void handleContextRefreshEvent(ContextRefreshedEvent ctxRefreshedEvent) {
63 timerPool.scheduleAtFixedRate(this, interval, interval, TimeUnit.MILLISECONDS);
68 LOGGER.debug("Sent heartbeat to CLAMP");
69 participantHandler.sendHeartbeat();
78 * Makes a new timer pool.
80 * @return a new timer pool
82 protected ScheduledExecutorService makeTimerPool() {
83 return Executors.newScheduledThreadPool(1);