2 * ========================LICENSE_START=================================
5 * Copyright (C) 2019 Nordix Foundation
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ========================LICENSE_END===================================
21 package org.oransc.policyagent.dmaap;
23 import com.google.common.collect.Iterables;
25 import java.io.IOException;
26 import java.time.Duration;
27 import java.util.Properties;
29 import org.onap.dmaap.mr.client.MRBatchingPublisher;
30 import org.onap.dmaap.mr.client.MRClientFactory;
31 import org.onap.dmaap.mr.client.MRConsumer;
32 import org.onap.dmaap.mr.client.response.MRConsumerResponse;
33 import org.oransc.policyagent.clients.AsyncRestClient;
34 import org.oransc.policyagent.configuration.ApplicationConfig;
35 import org.oransc.policyagent.exceptions.ServiceException;
36 import org.slf4j.Logger;
37 import org.slf4j.LoggerFactory;
38 import org.springframework.beans.factory.annotation.Autowired;
39 import org.springframework.beans.factory.annotation.Value;
40 import org.springframework.stereotype.Component;
43 public class DmaapMessageConsumer implements Runnable {
45 private static final Logger logger = LoggerFactory.getLogger(DmaapMessageConsumer.class);
47 final Duration TIME_BETWEEN_DMAAP_POLLS = Duration.ofSeconds(10);
48 private final ApplicationConfig applicationConfig;
50 @Value("${server.port}")
51 private int localServerPort;
54 public DmaapMessageConsumer(ApplicationConfig applicationConfig) {
55 this.applicationConfig = applicationConfig;
57 Thread thread = new Thread(this);
61 private boolean isDmaapConfigured() {
62 Properties consumerCfg = applicationConfig.getDmaapConsumerConfig();
63 Properties producerCfg = applicationConfig.getDmaapPublisherConfig();
64 return (consumerCfg != null && consumerCfg.size() > 0 && producerCfg != null && producerCfg.size() > 0);
69 while (sleep(TIME_BETWEEN_DMAAP_POLLS) && isDmaapConfigured()) {
71 Iterable<String> dmaapMsgs = fetchAllMessages();
72 if (dmaapMsgs != null && Iterables.size(dmaapMsgs) > 0) {
73 logger.debug("Fetched all the messages from DMAAP and will start to process the messages");
74 for (String msg : dmaapMsgs) {
78 } catch (Exception e) {
79 logger.warn("{}: cannot fetch because of ", this, e.getMessage(), e);
80 sleep(TIME_BETWEEN_DMAAP_POLLS);
85 private Iterable<String> fetchAllMessages() throws ServiceException, IOException {
86 Properties dmaapConsumerProperties = this.applicationConfig.getDmaapConsumerConfig();
87 MRConsumer consumer = MRClientFactory.createConsumer(dmaapConsumerProperties);
88 MRConsumerResponse response = consumer.fetchWithReturnConsumerResponse();
89 if (response == null || !"200".equals(response.getResponseCode())) {
90 throw new ServiceException("DMaaP NULL response received");
92 logger.debug("DMaaP consumer received {} : {}", response.getResponseCode(), response.getResponseMessage());
93 return response.getActualMessages();
97 private void processMsg(String msg) throws IOException {
98 logger.debug("Message Reveived from DMAAP : {}", msg);
99 createDmaapMessageHandler().handleDmaapMsg(msg);
102 private DmaapMessageHandler createDmaapMessageHandler() throws IOException {
103 String agentBaseUrl = "http://localhost:" + this.localServerPort;
104 AsyncRestClient agentClient = new AsyncRestClient(agentBaseUrl);
105 Properties dmaapPublisherProperties = applicationConfig.getDmaapPublisherConfig();
106 MRBatchingPublisher producer = MRClientFactory.createBatchingPublisher(dmaapPublisherProperties);
108 return new DmaapMessageHandler(producer, agentClient);
111 private boolean sleep(Duration duration) {
113 Thread.sleep(duration.toMillis());
115 } catch (Exception e) {
116 logger.error("Failed to put the thread to sleep", e);