opendaylight/config/config-persister-feature-adapter/src/main/java/org/opendaylight/controller/configpusherfeature/internal/ConfigPushingRunnable.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.configpusherfeature.internal;
   9
  10 import java.util.ArrayList;
  11 import java.util.List;
  12 import java.util.concurrent.BlockingQueue;
  13 import java.util.concurrent.TimeUnit;
  14
  15 import org.apache.karaf.features.Feature;
  16 import org.apache.karaf.features.FeatureEvent;
  17 import org.apache.karaf.features.FeatureEvent.EventType;
  18 import org.apache.karaf.features.FeaturesService;
  19 import org.opendaylight.controller.config.persist.api.ConfigPusher;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 import com.google.common.collect.LinkedHashMultimap;
  24
  25 public class ConfigPushingRunnable implements Runnable {
  26     private static final Logger logger = LoggerFactory.getLogger(ConfigPushingRunnable.class);
  27     private static final int POLL_TIME = 1;
  28     private BlockingQueue<FeatureEvent> queue;
  29     private FeatureConfigPusher configPusher;
  30     public ConfigPushingRunnable(ConfigPusher p, FeaturesService f,BlockingQueue<FeatureEvent> q) {
  31         queue = q;
  32         configPusher = new FeatureConfigPusher(p, f);
  33     }
  34
  35     @Override
  36     public void run() {
  37         List<Feature> toInstall = new ArrayList<Feature>();
  38         FeatureEvent event;
  39         boolean interuppted = false;
  40         while(true) {
  41             try {
  42                 if(!interuppted) {
  43                         if(toInstall.isEmpty()) {
  44                             event = queue.take();
  45                         } else {
  46                             event = queue.poll(POLL_TIME, TimeUnit.MILLISECONDS);
  47                         }
  48                         if(event != null && event.getFeature() !=null) {
  49                             processFeatureEvent(event,toInstall);
  50                         }
  51                 } else if(toInstall.isEmpty()) {
  52                     logger.error("ConfigPushingRunnable - exiting");
  53                     return;
  54                 }
  55             } catch (InterruptedException e) {
  56                 logger.error("ConfigPushingRunnable - interupted");
  57                 interuppted = true;
  58             } catch (Exception e) {
  59                 logger.error("Exception while processing features {}", e);
  60             }
  61         }
  62     }
  63
  64     protected void processFeatureEvent(FeatureEvent event, List<Feature> toInstall) throws InterruptedException, Exception {
  65         if(event.getType() == EventType.FeatureInstalled) {
  66             toInstall.add(event.getFeature());
  67             LinkedHashMultimap<Feature,FeatureConfigSnapshotHolder> result = configPusher.pushConfigs(toInstall);
  68             toInstall.removeAll(result.keySet());
  69         } else if(event.getType() == EventType.FeatureUninstalled) {
  70             toInstall.remove(event.getFeature());
  71         }
  72     }
  73
  74     protected void logPushResult(LinkedHashMultimap<Feature,FeatureConfigSnapshotHolder> results) {
  75         for(Feature f:results.keySet()) {
  76             logger.info("Pushed configs for feature {} {}",f,results.get(f));
  77         }
  78     }
  79 }