engine-d/src/main/java/org/onap/holmes/engine/dcae/DcaeConfigurationPolling.java

   1 /**
   2  * Copyright 2017 ZTE Corporation.
   3  *
   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
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  */
  16 package org.onap.holmes.engine.dcae;
  17
  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.dsa.dmaappolling.Subscriber;
  25 import org.onap.holmes.engine.dmaap.SubscriberAction;
  26
  27 @Slf4j
  28 public class DcaeConfigurationPolling implements Runnable {
  29
  30     private String hostname;
  31
  32     public static long POLLING_PERIOD = 30 * 1000L;
  33
  34     public DcaeConfigurationPolling(String hostname) {
  35         this.hostname = hostname;
  36     }
  37
  38     @Override
  39     public void run() {
  40         DcaeConfigurations dcaeConfigurations = null;
  41         try {
  42             dcaeConfigurations = DcaeConfigurationQuery
  43                     .getDcaeConfigurations(hostname);
  44         } catch (CorrelationException e) {
  45             log.error("Failed to poll the DCAE configurations. " + e.getMessage());
  46         }
  47         if (dcaeConfigurations != null) {
  48             DcaeConfigurationsCache.setDcaeConfigurations(dcaeConfigurations);
  49             addSubscribers(dcaeConfigurations);
  50         }
  51     }
  52
  53     private void addSubscribers(DcaeConfigurations dcaeConfigurations) {
  54         SubscriberAction subscriberAction = ServiceLocatorHolder.getLocator()
  55                 .getService(SubscriberAction.class);
  56         for (String key : dcaeConfigurations.getSubKeys()) {
  57             Subscriber subscriber = new Subscriber();
  58             subscriber.setTopic(key);
  59             subscriber.setUrl(dcaeConfigurations.getSubSecInfo(key).getDmaapInfo()
  60                     .getTopicUrl());
  61             subscriberAction.addSubscriber(subscriber);
  62         }
  63     }
  64 }