opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/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.shardmanager;
  10
  11 import akka.actor.ActorRef;
  12 import com.google.common.base.Preconditions;
  13 import com.google.common.collect.ImmutableList;
  14 import java.util.Collection;
  15 import java.util.List;
  16 import org.opendaylight.controller.cluster.raft.RaftState;
  17 import org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 final class ShardManagerInfo extends AbstractMXBean implements ShardManagerInfoMBean {
  22
  23     public static final String JMX_CATEGORY_SHARD_MANAGER = "ShardManager";
  24
  25     // The only states that you can switch to from outside. You cannot switch to Candidate/IsolatedLeader for example
  26     private static final Collection<String> ACCEPTABLE_STATES
  27             = ImmutableList.of(RaftState.Leader.name(), RaftState.Follower.name());
  28
  29     private static final Logger LOG = LoggerFactory.getLogger(ShardManagerInfo.class);
  30
  31     private final String memberName;
  32     private final List<String> localShards;
  33
  34     private boolean syncStatus = false;
  35
  36     private ShardManager shardManager;
  37
  38     private ShardManagerInfo(String memberName, String name, String mxBeanType, List<String> localShards) {
  39         super(name, mxBeanType, JMX_CATEGORY_SHARD_MANAGER);
  40         this.memberName = memberName;
  41         this.localShards = localShards;
  42     }
  43
  44     static ShardManagerInfo createShardManagerMBean(String memberName, String name, String mxBeanType,
  45             List<String> localShards){
  46         ShardManagerInfo shardManagerInfo = new ShardManagerInfo(memberName, name, mxBeanType, localShards);
  47
  48         shardManagerInfo.registerMBean();
  49
  50         return shardManagerInfo;
  51     }
  52
  53     public void addLocalShard(String shardName) {
  54         localShards.add(shardName);
  55     }
  56
  57     @Override
  58     public List<String> getLocalShards() {
  59         return localShards;
  60     }
  61
  62     @Override
  63     public boolean getSyncStatus() {
  64         return this.syncStatus;
  65     }
  66
  67     @Override
  68     public String getMemberName() {
  69         return memberName;
  70     }
  71
  72     @Override
  73     public void switchAllLocalShardsState(String newState, long term) {
  74         LOG.info("switchAllLocalShardsState called newState = {}, term = {}", newState, term);
  75
  76         for(String shardName : localShards){
  77             switchShardState(shardName, newState, term);
  78         }
  79     }
  80
  81     @Override
  82     public void switchShardState(String shardName, String newState, long term) {
  83         LOG.info("switchShardState called shardName = {}, newState = {}, term = {}", shardName, newState, term);
  84
  85         Preconditions.checkArgument(localShards.contains(shardName), shardName + " is not local");
  86         Preconditions.checkArgument(ACCEPTABLE_STATES.contains(newState));
  87
  88         shardManager.getSelf().tell(new SwitchShardBehavior(shardName, RaftState.valueOf(newState), term),
  89             ActorRef.noSender());
  90     }
  91
  92     public void setSyncStatus(boolean syncStatus){
  93         this.syncStatus = syncStatus;
  94     }
  95
  96     public void setShardManager(ShardManager shardManager){
  97         this.shardManager = shardManager;
  98     }
  99 }