Implement cluster admin RPCs to change member voting states
[controller.git] / opendaylight / md-sal / sal-distributed-datastore / src / main / java / org / opendaylight / controller / cluster / datastore / jmx / mbeans / shard / ShardStats.java
index 577a03c3a35ae018d4f33ecdc7bedb30022c474e..b01eb099a5707975515c00d7c661725ff8f16400 100644 (file)
@@ -8,17 +8,26 @@
 
 package org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard;
 
+import akka.actor.ActorRef;
+import akka.pattern.Patterns;
+import akka.util.Timeout;
+import com.google.common.base.Joiner;
+import com.google.common.base.Stopwatch;
+import com.google.common.cache.Cache;
+import com.google.common.cache.CacheBuilder;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.List;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicLong;
+import org.opendaylight.controller.cluster.datastore.Shard;
+import org.opendaylight.controller.cluster.raft.base.messages.InitiateCaptureSnapshot;
+import org.opendaylight.controller.cluster.raft.client.messages.FollowerInfo;
+import org.opendaylight.controller.cluster.raft.client.messages.GetOnDemandRaftState;
+import org.opendaylight.controller.cluster.raft.client.messages.OnDemandRaftState;
 import org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean;
-import org.opendaylight.controller.md.sal.common.util.jmx.QueuedNotificationManagerMXBeanImpl;
-import org.opendaylight.controller.md.sal.common.util.jmx.ThreadExecutorStats;
-import org.opendaylight.controller.md.sal.common.util.jmx.ThreadExecutorStatsMXBeanImpl;
-import org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore;
-import org.opendaylight.yangtools.util.concurrent.ListenerNotificationQueueStats;
-import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager;
+import scala.concurrent.Await;
 
 /**
  * Maintains statistics for a shard.
@@ -28,6 +37,11 @@ import org.opendaylight.yangtools.util.concurrent.QueuedNotificationManager;
 public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
     public static String JMX_CATEGORY_SHARD = "Shards";
 
+    private static final SimpleDateFormat DATE_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
+
+    private static final Cache<String, OnDemandRaftState> onDemandRaftStateCache =
+            CacheBuilder.newBuilder().expireAfterWrite(2, TimeUnit.SECONDS).build();
+
     private long committedTransactionsCount;
 
     private long readOnlyTransactionCount;
@@ -36,20 +50,6 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     private long readWriteTransactionCount;
 
-    private String leader;
-
-    private String raftState;
-
-    private long lastLogTerm = -1L;
-
-    private long lastLogIndex = -1L;
-
-    private long currentTerm = -1L;
-
-    private long commitIndex = -1L;
-
-    private long lastApplied = -1L;
-
     private long lastCommittedTransactionTime;
 
     private long failedTransactionsCount;
@@ -58,26 +58,52 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     private long abortTransactionsCount;
 
-    private ThreadExecutorStatsMXBeanImpl notificationExecutorStatsBean;
+    private boolean followerInitialSyncStatus = false;
+
+    private Shard shard;
 
-    private QueuedNotificationManagerMXBeanImpl notificationManagerStatsBean;
+    private String statRetrievalError;
 
-    private long dataSize = 0;
+    private String statRetrievalTime;
 
-    private final SimpleDateFormat sdf =
-        new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
+    private long leadershipChangeCount;
 
-    private boolean followerInitialSyncStatus = false;
+    private long lastLeadershipChangeTime;
 
     public ShardStats(final String shardName, final String mxBeanType) {
         super(shardName, mxBeanType, JMX_CATEGORY_SHARD);
     }
 
-    public void setNotificationManager(final QueuedNotificationManager<?, ?> manager) {
-        this.notificationManagerStatsBean = new QueuedNotificationManagerMXBeanImpl(manager,
-                "notification-manager", getMBeanType(), getMBeanCategory());
+    public void setShard(Shard shard) {
+        this.shard = shard;
+    }
+
+    private OnDemandRaftState getOnDemandRaftState() {
+        String name = getShardName();
+        OnDemandRaftState state = onDemandRaftStateCache.getIfPresent(name);
+        if(state == null) {
+            statRetrievalError = null;
+            statRetrievalTime = null;
+
+            if(shard != null) {
+                Timeout timeout = new Timeout(10, TimeUnit.SECONDS);
+                try {
+                    Stopwatch timer = Stopwatch.createStarted();
+
+                    state = (OnDemandRaftState) Await.result(Patterns.ask(shard.getSelf(),
+                            GetOnDemandRaftState.INSTANCE, timeout), timeout.duration());
+
+                    statRetrievalTime = timer.stop().toString();
+                    onDemandRaftStateCache.put(name, state);
+                } catch (Exception e) {
+                    statRetrievalError = e.toString();
+                }
+            }
 
-        this.notificationExecutorStatsBean = ThreadExecutorStatsMXBeanImpl.create(manager.getExecutor());
+            state = state != null ? state : OnDemandRaftState.builder().build();
+        }
+
+        return state;
     }
 
     @Override
@@ -92,12 +118,12 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     @Override
     public String getLeader() {
-        return leader;
+        return getOnDemandRaftState().getLeader();
     }
 
     @Override
     public String getRaftState() {
-        return raftState;
+        return getOnDemandRaftState().getRaftState();
     }
 
     @Override
@@ -117,33 +143,76 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     @Override
     public long getLastLogIndex() {
-        return lastLogIndex;
+        return getOnDemandRaftState().getLastLogIndex();
     }
 
     @Override
     public long getLastLogTerm() {
-        return lastLogTerm;
+        return getOnDemandRaftState().getLastLogTerm();
     }
 
     @Override
     public long getCurrentTerm() {
-        return currentTerm;
+        return getOnDemandRaftState().getCurrentTerm();
     }
 
     @Override
     public long getCommitIndex() {
-        return commitIndex;
+        return getOnDemandRaftState().getCommitIndex();
     }
 
     @Override
     public long getLastApplied() {
-        return lastApplied;
+        return getOnDemandRaftState().getLastApplied();
     }
 
     @Override
-    public String getLastCommittedTransactionTime() {
+    public long getLastIndex() {
+        return getOnDemandRaftState().getLastIndex();
+    }
+
+    @Override
+    public long getLastTerm() {
+        return getOnDemandRaftState().getLastTerm();
+    }
+
+    @Override
+    public long getSnapshotIndex() {
+        return getOnDemandRaftState().getSnapshotIndex();
+    }
 
-        return sdf.format(new Date(lastCommittedTransactionTime));
+    @Override
+    public long getSnapshotTerm() {
+        return getOnDemandRaftState().getSnapshotTerm();
+    }
+
+    @Override
+    public long getReplicatedToAllIndex() {
+        return getOnDemandRaftState().getReplicatedToAllIndex();
+    }
+
+    @Override
+    public String getVotedFor() {
+        return getOnDemandRaftState().getVotedFor();
+    }
+    @Override
+    public boolean isVoting() {
+        return getOnDemandRaftState().isVoting();
+    }
+
+    @Override
+    public String getPeerVotingStates() {
+        return toStringMap(getOnDemandRaftState().getPeerVotingStates());
+    }
+
+    @Override
+    public boolean isSnapshotCaptureInitiated() {
+        return getOnDemandRaftState().isSnapshotCaptureInitiated();
+    }
+
+    @Override
+    public String getLastCommittedTransactionTime() {
+        return DATE_FORMAT.format(new Date(lastCommittedTransactionTime));
     }
 
     @Override
@@ -190,66 +259,18 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
         return ++abortTransactionsCount;
     }
 
-    public void setLeader(final String leader) {
-        this.leader = leader;
-    }
-
-    public void setRaftState(final String raftState) {
-        this.raftState = raftState;
-    }
-
-    public void setLastLogTerm(final long lastLogTerm) {
-        this.lastLogTerm = lastLogTerm;
-    }
-
-    public void setLastLogIndex(final long lastLogIndex) {
-        this.lastLogIndex = lastLogIndex;
-    }
-
-    public void setCurrentTerm(final long currentTerm) {
-        this.currentTerm = currentTerm;
-    }
-
-    public void setCommitIndex(final long commitIndex) {
-        this.commitIndex = commitIndex;
-    }
-
-    public void setLastApplied(final long lastApplied) {
-        this.lastApplied = lastApplied;
-    }
-
     public void setLastCommittedTransactionTime(final long lastCommittedTransactionTime) {
         this.lastCommittedTransactionTime = lastCommittedTransactionTime;
     }
 
-    public void setInMemoryJournalDataSize(long dataSize){
-        this.dataSize = dataSize;
-    }
-
     @Override
     public long getInMemoryJournalDataSize(){
-        return dataSize;
-    }
-
-    @Override
-    public ThreadExecutorStats getDataStoreExecutorStats() {
-        // FIXME: this particular thing does not work, as it really is DS-specific
-        return null;
-    }
-
-    @Override
-    public ThreadExecutorStats getNotificationMgrExecutorStats() {
-        return notificationExecutorStatsBean.toThreadExecutorStats();
+        return getOnDemandRaftState().getInMemoryJournalDataSize();
     }
 
     @Override
-    public List<ListenerNotificationQueueStats> getCurrentNotificationMgrListenerQueueStats() {
-        return notificationManagerStatsBean.getCurrentListenerQueueStats();
-    }
-
-    @Override
-    public int getMaxNotificationMgrListenerQueueSize() {
-        return notificationManagerStatsBean.getMaxListenerQueueSize();
+    public long getInMemoryJournalLogSize() {
+        return getOnDemandRaftState().getInMemoryJournalLogSize();
     }
 
     /**
@@ -275,10 +296,6 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
 
     }
 
-    public void setDataStore(final InMemoryDOMDataStore store) {
-        setNotificationManager(store.getDataChangeListenerNotificationManager());
-    }
-
     public void setFollowerInitialSyncStatus(boolean followerInitialSyncStatus) {
         this.followerInitialSyncStatus = followerInitialSyncStatus;
     }
@@ -287,4 +304,62 @@ public class ShardStats extends AbstractMXBean implements ShardStatsMXBean {
     public boolean getFollowerInitialSyncStatus() {
         return followerInitialSyncStatus;
     }
+
+    @Override
+    public List<FollowerInfo> getFollowerInfo() {
+        return getOnDemandRaftState().getFollowerInfoList();
+    }
+
+    @Override
+    public String getPeerAddresses() {
+        return toStringMap(getOnDemandRaftState().getPeerAddresses());
+    }
+
+    private static String toStringMap(Map<?, ?> map) {
+        return Joiner.on(", ").withKeyValueSeparator(": ").join(map);
+    }
+
+    @Override
+    public String getStatRetrievalTime() {
+        getOnDemandRaftState();
+        return statRetrievalTime;
+    }
+
+    @Override
+    public String getStatRetrievalError() {
+        getOnDemandRaftState();
+        return statRetrievalError;
+    }
+
+    @Override
+    public long getLeadershipChangeCount() {
+        return leadershipChangeCount;
+    }
+
+    public void incrementLeadershipChangeCount() {
+        leadershipChangeCount++;
+        lastLeadershipChangeTime = System.currentTimeMillis();
+    }
+
+    @Override
+    public String getLastLeadershipChangeTime() {
+        return DATE_FORMAT.format(new Date(lastLeadershipChangeTime));
+    }
+
+    @Override
+    public int getPendingTxCommitQueueSize() {
+        return shard.getPendingTxCommitQueueSize();
+    }
+
+    @Override
+    public int getTxCohortCacheSize() {
+        return shard.getCohortCacheSize();
+    }
+
+    @Override
+    public void captureSnapshot() {
+        if(shard != null) {
+            shard.getSelf().tell(new InitiateCaptureSnapshot(), ActorRef.noSender());
+        }
+    }
 }