Java Code Examples for org.apache.curator.framework.state.connectionstate#SUSPENDED

public void stateChanged(CuratorFramework client, ConnectionState newState) {
    try {
        LogUtils.warn.warn(client.getData().toString() + " state change to " + newState);
    } catch (Throwable exp) {
        // catch any null pointer exception
    }

    if (newState == ConnectionState.SUSPENDED || newState == ConnectionState.LOST) {
        try {
            refreshLogPos(); // 链接状态变更 则需要将最新的binlog offset 刷新到 zk
        } catch (Exception e) {
            // 更新binlog 位置异常
            LogUtils.error.error("state change to " + newState + " refresh log position error", e);
        }
        killWorkAndAbandonLeader();
    }
}
 

@Override
public void stateChanged(CuratorFramework client, ConnectionState newState)
{
    if ( (newState == ConnectionState.SUSPENDED) || (newState == ConnectionState.LOST) )
    {
        throw new CancelLeadershipException();
    }
}
 

@Override
public void stateChanged(CuratorFramework curatorFramework, ConnectionState newState)
{
    if ( (newState == ConnectionState.LOST) || (newState == ConnectionState.SUSPENDED) )
    {
        if ( ourThread != null )
        {
            ourThread.interrupt();
        }
    }
}
 

@Override
public void stateChanged(CuratorFramework curatorFramework, ConnectionState state) {
    if (ConnectionState.SUSPENDED == state || ConnectionState.LOST == state) {
        logger.info(String.format("%s has lost connection from zookeeper", servicePath));
    } else if (ConnectionState.RECONNECTED == state) {
        try {
            PathUtil.rebalance(registryCenter, registryConfig, changeListener, servicePath);
        } catch (Exception e) {
            logger.error(String.format("%s connection reconnected to rebalance error", servicePath), e);
        }
    }
}
 

@Override
public void stateChanged(CuratorFramework client, ConnectionState newState) {
    if (newState == ConnectionState.SUSPENDED || newState == ConnectionState.LOST) {
        this.isLeader = false;
        leaderExecutor.shutdownNow();
        throw new CancelLeadershipException();
    }
}
 

@Override
public void stateChanged(final CuratorFramework client, final ConnectionState state) {
  if (state == ConnectionState.LOST || state == ConnectionState.SUSPENDED) {
    log.warn("connection state changed, now");
    isStop.set(true);
  }
}
 

@Override
public void stateChanged(final CuratorFramework client, final ConnectionState newState) {
    if (JobRegistry.getInstance().isShutdown(jobName)) {
        return;
    }
    JobScheduleController jobScheduleController = JobRegistry.getInstance().getJobScheduleController(jobName);
    if (ConnectionState.SUSPENDED == newState || ConnectionState.LOST == newState) {
        jobScheduleController.pauseJob();
    } else if (ConnectionState.RECONNECTED == newState) {
        serverService.persistOnline(serverService.isEnableServer(JobRegistry.getInstance().getJobInstance(jobName).getIp()));
        instanceService.persistOnline();
        executionService.clearRunningInfo(shardingService.getLocalShardingItems());
        jobScheduleController.resumeJob();
    }
}
 

@Override
public void stateChanged(CuratorFramework client, ConnectionState newState) {
    if ((newState == ConnectionState.SUSPENDED) || (newState == ConnectionState.LOST)) {
        try {
            shutdown();
        } catch (SchedulerException e) {
            throw new RuntimeException("failed to shutdown scheduler", e);
        }
    }
}
 

@Override
public void stateChanged(CuratorFramework curatorFramework, ConnectionState newState)
{
    if ( (newState == ConnectionState.LOST) || (newState == ConnectionState.SUSPENDED) )
    {
        if ( ourThread != null )
        {
            ourThread.interrupt();
        }
    }
}
 

@Override
public synchronized void stateChanged(final CuratorFramework client, final ConnectionState newState) {
    logger.info("{} Connection State changed to {}", this, newState.name());

    if (newState == ConnectionState.SUSPENDED || newState == ConnectionState.LOST) {
        if (leader) {
            logger.info("Because Connection State was changed to {}, will relinquish leadership for role '{}'", newState, roleName);
        }

        setLeader(false);
    }

    super.stateChanged(client, newState);
}
 

@Override
public void stateChanged(CuratorFramework curatorFramework, ConnectionState newState) {
    if (newState == ConnectionState.LOST || newState == ConnectionState.SUSPENDED) {
        LOG.debug("Lost leadership due to ZK state change to {}: {}", newState, getId());
        closeLeaderLatch();
    }
}
 

@Override
public void stateChanged(CuratorFramework client, ConnectionState newState) {
	if (newState == ConnectionState.SUSPENDED || newState == ConnectionState.LOST) {
		lastState = newState;
	}
}
 

@Override
public void stateChanged(CuratorFramework client, ConnectionState newState) {
	if (newState == ConnectionState.SUSPENDED || newState == ConnectionState.LOST) {
		lastState = newState;
	}
}
 

@Test
public void testDisconnectReconnectWithMultipleClients() throws Exception
{
    Timing timing = new Timing();
    CuratorFramework curatorFramework1 = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryNTimes(10, 500));
    CuratorFramework curatorFramework2 = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryNTimes(10, 500));

    curatorFramework1.start();
    curatorFramework1.checkExists().forPath("/");   // clear initial connect events
    curatorFramework2.start();
    curatorFramework2.checkExists().forPath("/");   // clear initial connect events

    final String sharedCountPath = "/count";
    final int initialCount = 10;
    SharedCount sharedCount1 = new SharedCount(curatorFramework1, sharedCountPath, initialCount);
    SharedCount sharedCountWithFaultyWatcher = createSharedCountWithFaultyWatcher(curatorFramework2, sharedCountPath, initialCount);

    class MySharedCountListener implements SharedCountListener
    {
        final public Phaser gotSuspendEvent = new Phaser(1);
        final public Phaser gotChangeEvent = new Phaser(1);
        final public Phaser getReconnectEvent = new Phaser(1);
        final public AtomicInteger numChangeEvents = new AtomicInteger(0);

        @Override
        public void countHasChanged(SharedCountReader sharedCount, int newCount) throws Exception
        {
            numChangeEvents.incrementAndGet();
            gotChangeEvent.arrive();
        }

        @Override
        public void stateChanged(CuratorFramework client, ConnectionState newState)
        {
            if (newState == ConnectionState.SUSPENDED) {
                gotSuspendEvent.arrive();
            } else if (newState == ConnectionState.RECONNECTED) {
                getReconnectEvent.arrive();
            }
        }
    }

    MySharedCountListener listener1 = new MySharedCountListener();
    sharedCount1.addListener(listener1);
    sharedCount1.start();
    MySharedCountListener listener2 = new MySharedCountListener();
    sharedCountWithFaultyWatcher.addListener(listener2);

    try
    {
        sharedCount1.setCount(12);
        Assert.assertEquals(listener1.gotChangeEvent.awaitAdvanceInterruptibly(0, timing.seconds(), TimeUnit.SECONDS), 1);
        Assert.assertEquals(sharedCount1.getCount(), 12);

        Assert.assertEquals(sharedCountWithFaultyWatcher.getCount(), 10);
        // new counter with faultyWatcher start
        sharedCountWithFaultyWatcher.start();

        for (int i = 0; i < 10; i++) {
            sharedCount1.setCount(13 + i);
            Assert.assertEquals(sharedCount1.getCount(), 13 + i);

            server.restart();

            Assert.assertEquals(listener2.getReconnectEvent.awaitAdvanceInterruptibly(i, timing.forWaiting().seconds(), TimeUnit.SECONDS), i + 1);
            // CURATOR-311 introduces to Curator's client reading server's shared count value
            // when client's state gets ConnectionState.RECONNECTED. Following tests ensures that.
            Assert.assertEquals(listener2.gotChangeEvent.awaitAdvanceInterruptibly(i, timing.forWaiting().seconds(), TimeUnit.SECONDS), i + 1);
            Assert.assertEquals(sharedCountWithFaultyWatcher.getCount(), 13 + i);
        }
    }
    finally
    {
        CloseableUtils.closeQuietly(sharedCount1);
        CloseableUtils.closeQuietly(curatorFramework1);
        CloseableUtils.closeQuietly(sharedCountWithFaultyWatcher);
        CloseableUtils.closeQuietly(curatorFramework2);
    }
}