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 String memberName;
  33     private final List<String> localShards;
  34
  35     private boolean syncStatus = false;
  36
  37     private ShardManager shardManager;
  38
  39     public 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     public 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     @Override
  55     public List<String> getLocalShards() {
  56         return localShards;
  57     }
  58
  59     @Override
  60     public boolean getSyncStatus() {
  61         return this.syncStatus;
  62     }
  63
  64     @Override
  65     public String getMemberName() {
  66         return memberName;
  67     }
  68
  69     @Override
  70     public void switchAllLocalShardsState(String newState, long term) {
  71         LOG.info("switchAllLocalShardsState called newState = {}, term = {}", newState, term);
  72
  73         for(String shardName : localShards){
  74             switchShardState(shardName, newState, term);
  75         }
  76     }
  77
  78     @Override
  79     public void switchShardState(String shardName, String newState, long term) {
  80         LOG.info("switchShardState called shardName = {}, newState = {}, term = {}", shardName, newState, term);
  81
  82         Preconditions.checkArgument(localShards.contains(shardName), shardName + " is not local");
  83         Preconditions.checkArgument(ACCEPTABLE_STATES.contains(newState));
  84
  85         shardManager.getSelf().tell(new SwitchShardBehavior(shardName, newState, term), ActorRef.noSender());
  86     }
  87
  88     public void setSyncStatus(boolean syncStatus){
  89         this.syncStatus = syncStatus;
  90     }
  91
  92     public void setShardManager(ShardManager shardManager){
  93         this.shardManager = shardManager;
  94     }
  95 }