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 com.google.common.collect.LinkedHashMultimap;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import java.util.concurrent.BlockingQueue;
  14 import java.util.concurrent.TimeUnit;
  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 public class ConfigPushingRunnable implements Runnable {
  24     private static final Logger LOG = LoggerFactory.getLogger(ConfigPushingRunnable.class);
  25     private static final int POLL_TIME = 1;
  26     private BlockingQueue<FeatureEvent> queue;
  27     private FeatureConfigPusher configPusher;
  28     public ConfigPushingRunnable(ConfigPusher p, FeaturesService f,BlockingQueue<FeatureEvent> q) {
  29         queue = q;
  30         configPusher = new FeatureConfigPusher(p, f);
  31     }
  32
  33     @Override
  34     public void run() {
  35         List<Feature> toInstall = new ArrayList<Feature>();
  36         FeatureEvent event = null;
  37         boolean interuppted = false;
  38         while(true) {
  39             try {
  40                 if(!interuppted) {
  41                     if(toInstall.isEmpty()) {
  42                         event = queue.take();
  43                     } else {
  44                         event = queue.poll(POLL_TIME, TimeUnit.MILLISECONDS);
  45                     }
  46                     if(event != null && event.getFeature() !=null) {
  47                         processFeatureEvent(event,toInstall);
  48                     }
  49                 } else if(toInstall.isEmpty()) {
  50                     LOG.error("ConfigPushingRunnable - exiting");
  51                     return;
  52                 }
  53             } catch (InterruptedException e) {
  54                 LOG.error("ConfigPushingRunnable - interupted");
  55                 interuppted = true;
  56             } catch (Exception e) {
  57                 LOG.error("Exception while processing features {} event {}", toInstall, event, e);
  58             }
  59         }
  60     }
  61
  62     protected void processFeatureEvent(FeatureEvent event, List<Feature> toInstall) throws InterruptedException, Exception {
  63         if(event.getType() == EventType.FeatureInstalled) {
  64             toInstall.add(event.getFeature());
  65             LinkedHashMultimap<Feature,FeatureConfigSnapshotHolder> result = configPusher.pushConfigs(toInstall);
  66             toInstall.removeAll(result.keySet());
  67         } else if(event.getType() == EventType.FeatureUninstalled) {
  68             toInstall.remove(event.getFeature());
  69         }
  70     }
  71
  72     protected void logPushResult(LinkedHashMultimap<Feature,FeatureConfigSnapshotHolder> results) {
  73         for(Feature f:results.keySet()) {
  74             LOG.info("Pushed configs for feature {} {}",f,results.get(f));
  75         }
  76     }
  77 }