2 * Copyright 2017 ZTE Corporation.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.onap.holmes.engine.dcae;
18 import lombok.extern.slf4j.Slf4j;
19 import org.onap.holmes.common.dcae.DcaeConfigurationQuery;
20 import org.onap.holmes.common.dcae.DcaeConfigurationsCache;
21 import org.onap.holmes.common.dcae.entity.DcaeConfigurations;
22 import org.onap.holmes.common.dropwizard.ioc.utils.ServiceLocatorHolder;
23 import org.onap.holmes.common.exception.CorrelationException;
24 import org.onap.holmes.common.utils.Md5Util;
25 import org.onap.holmes.dsa.dmaappolling.Subscriber;
26 import org.onap.holmes.engine.dmaap.SubscriberAction;
29 public class DcaeConfigurationPolling implements Runnable {
31 private String hostname;
33 public static final long POLLING_PERIOD = 30 * 1000L;
35 private String prevConfigMd5 = Md5Util.md5(null);
37 public DcaeConfigurationPolling(String hostname) {
38 this.hostname = hostname;
43 DcaeConfigurations dcaeConfigurations = null;
45 dcaeConfigurations = DcaeConfigurationQuery.getDcaeConfigurations(hostname);
46 String md5 = Md5Util.md5(dcaeConfigurations);
47 if (prevConfigMd5.equals(md5)){
48 log.info("Operation aborted due to identical Configurations.");
52 } catch (CorrelationException e) {
53 log.error("Failed to poll the DCAE configurations. " + e.getMessage(), e);
54 } catch (Exception e) {
55 log.info("Failed to generate the MD5 information for new configurations.", e);
57 if (dcaeConfigurations != null) {
58 DcaeConfigurationsCache.setDcaeConfigurations(dcaeConfigurations);
59 addSubscribers(dcaeConfigurations);
63 private void addSubscribers(DcaeConfigurations dcaeConfigurations) {
64 SubscriberAction subscriberAction = ServiceLocatorHolder.getLocator()
65 .getService(SubscriberAction.class);
66 for (String key : dcaeConfigurations.getSubKeys()) {
67 Subscriber subscriber = new Subscriber();
68 subscriber.setTopic(key);
69 subscriber.setUrl(dcaeConfigurations.getSubSecInfo(key).getDmaapInfo()
71 subscriberAction.addSubscriber(subscriber);