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.datastore.jmx.mbeans.shardmanager.ShardManagerInfoMBean;
  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 final class ShardManagerInfo extends AbstractMXBean implements ShardManagerInfoMBean {
  23
  24     public static final 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 Collection<String> ACCEPTABLE_STATES
  28             = ImmutableList.of(RaftState.Leader.name(), RaftState.Follower.name());
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(ShardManagerInfo.class);
  31
  32     private final String memberName;
  33     private final List<String> localShards;
  34
  35     private boolean syncStatus = false;
  36
  37     private ShardManager shardManager;
  38
  39     private ShardManagerInfo(String memberName, String name, String mxBeanType, List<String> localShards) {
  40         super(name, mxBeanType, JMX_CATEGORY_SHARD_MANAGER);
  41         this.memberName = memberName;
  42         this.localShards = localShards;
  43     }
  44
  45     static ShardManagerInfo createShardManagerMBean(String memberName, String name, String mxBeanType,
  46             List<String> localShards){
  47         ShardManagerInfo shardManagerInfo = new ShardManagerInfo(memberName, name, mxBeanType, localShards);
  48
  49         shardManagerInfo.registerMBean();
  50
  51         return shardManagerInfo;
  52     }
  53
  54     public void addLocalShard(String shardName) {
  55         localShards.add(shardName);
  56     }
  57
  58     @Override
  59     public List<String> getLocalShards() {
  60         return localShards;
  61     }
  62
  63     @Override
  64     public boolean getSyncStatus() {
  65         return this.syncStatus;
  66     }
  67
  68     @Override
  69     public String getMemberName() {
  70         return memberName;
  71     }
  72
  73     @Override
  74     public void switchAllLocalShardsState(String newState, long term) {
  75         LOG.info("switchAllLocalShardsState called newState = {}, term = {}", newState, term);
  76
  77         for(String shardName : localShards){
  78             switchShardState(shardName, newState, term);
  79         }
  80     }
  81
  82     @Override
  83     public void switchShardState(String shardName, String newState, long term) {
  84         LOG.info("switchShardState called shardName = {}, newState = {}, term = {}", shardName, newState, term);
  85
  86         Preconditions.checkArgument(localShards.contains(shardName), shardName + " is not local");
  87         Preconditions.checkArgument(ACCEPTABLE_STATES.contains(newState));
  88
  89         shardManager.getSelf().tell(new SwitchShardBehavior(shardName, RaftState.valueOf(newState), term),
  90             ActorRef.noSender());
  91     }
  92
  93     public void setSyncStatus(boolean syncStatus){
  94         this.syncStatus = syncStatus;
  95     }
  96
  97     public void setShardManager(ShardManager shardManager){
  98         this.shardManager = shardManager;
  99     }
 100 }