opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/jmx/mbeans/shardmanager/ShardManagerInfo.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
   9 package org.opendaylight.controller.cluster.datastore.jmx.mbeans.shardmanager;
  10
  11 import akka.actor.ActorRef;
  12 import com.google.common.base.Preconditions;
  13 import com.google.common.collect.Lists;
  14 import java.util.List;
  15 import org.opendaylight.controller.cluster.datastore.ShardManager;
  16 import org.opendaylight.controller.cluster.datastore.messages.SwitchShardBehavior;
  17 import org.opendaylight.controller.cluster.raft.RaftState;
  18 import org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 public class ShardManagerInfo extends AbstractMXBean implements ShardManagerInfoMBean {
  23
  24     public static String JMX_CATEGORY_SHARD_MANAGER = "ShardManager";
  25
  26     // The only states that you can switch to from outside. You cannot switch to Candidate/IsolatedLeader for example
  27     private static final List<String> ACCEPTABLE_STATES
  28             = Lists.newArrayList(RaftState.Leader.name(), RaftState.Follower.name());
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(ShardManagerInfo.class);
  31
  32     private final List<String> localShards;
  33
  34     private boolean syncStatus = false;
  35
  36     private ShardManager shardManager;
  37
  38     public ShardManagerInfo(String name, String mxBeanType, List<String> localShards) {
  39         super(name, mxBeanType, JMX_CATEGORY_SHARD_MANAGER);
  40         this.localShards = localShards;
  41     }
  42
  43     public static ShardManagerInfo createShardManagerMBean(String name, String mxBeanType,
  44             List<String> localShards){
  45         ShardManagerInfo shardManagerInfo = new ShardManagerInfo(name, mxBeanType, localShards);
  46
  47         shardManagerInfo.registerMBean();
  48
  49         return shardManagerInfo;
  50     }
  51
  52     @Override
  53     public List<String> getLocalShards() {
  54         return localShards;
  55     }
  56
  57     @Override
  58     public boolean getSyncStatus() {
  59         return this.syncStatus;
  60     }
  61
  62     @Override
  63     public void switchAllLocalShardsState(String newState, long term) {
  64         LOG.info("switchAllLocalShardsState called newState = {}, term = {}", newState, term);
  65
  66         for(String shardName : localShards){
  67             switchShardState(shardName, newState, term);
  68         }
  69     }
  70
  71     @Override
  72     public void switchShardState(String shardName, String newState, long term) {
  73         LOG.info("switchShardState called shardName = {}, newState = {}, term = {}", shardName, newState, term);
  74
  75         Preconditions.checkArgument(localShards.contains(shardName), shardName + " is not local");
  76         Preconditions.checkArgument(ACCEPTABLE_STATES.contains(newState));
  77
  78         shardManager.getSelf().tell(new SwitchShardBehavior(shardName, newState, term), ActorRef.noSender());
  79     }
  80
  81     public void setSyncStatus(boolean syncStatus){
  82         this.syncStatus = syncStatus;
  83     }
  84
  85     public void setShardManager(ShardManager shardManager){
  86         this.shardManager = shardManager;
  87     }
  88 }