Examples with ZkException org.I0Itec.zkclient.exception.ZkException used on opensource projects

Example 1 with ZkException

use of org.I0Itec.zkclient.exception.ZkException in project motan by weibocom.

the class ZookeeperRegistryFactory method createRegistry.

@Override
protected Registry createRegistry(URL registryUrl) {
    try {
        int timeout = registryUrl.getIntParameter(URLParamType.connectTimeout.getName(), URLParamType.connectTimeout.getIntValue());
        int sessionTimeout = registryUrl.getIntParameter(URLParamType.registrySessionTimeout.getName(), URLParamType.registrySessionTimeout.getIntValue());
        ZkClient zkClient = createInnerZkClient(registryUrl.getParameter("address"), sessionTimeout, timeout);
        return new ZookeeperRegistry(registryUrl, zkClient);
    } catch (ZkException e) {
        LoggerUtil.error("[ZookeeperRegistry] fail to connect zookeeper, cause: " + e.getMessage());
        throw e;
    }
}

Example 2 with ZkException

use of org.I0Itec.zkclient.exception.ZkException in project otter by alibaba.

the class MainstemMonitor method check.

/**
 * 检查当前的状态
 */
public boolean check() {
    String path = StagePathUtils.getMainStem(getPipelineId());
    try {
        byte[] bytes = zookeeper.readData(path);
        Long nid = ArbitrateConfigUtils.getCurrentNid();
        MainStemEventData eventData = JsonUtils.unmarshalFromByte(bytes, MainStemEventData.class);
        // 更新下为最新值
        activeData = eventData;
        // 检查下nid是否为自己
        boolean result = nid.equals(eventData.getNid());
        if (!result) {
            logger.warn("mainstem is running in node[{}] , but not in node[{}]", eventData.getNid(), nid);
        }
        return result;
    } catch (ZkNoNodeException e) {
        logger.warn("mainstem is not run any in node");
        return false;
    } catch (ZkInterruptedException e) {
        logger.warn("mainstem check is interrupt");
        // 清除interrupt标记
        Thread.interrupted();
        return check();
    } catch (ZkException e) {
        logger.warn("mainstem check is failed");
        return false;
    }
}

Example 3 with ZkException

use of org.I0Itec.zkclient.exception.ZkException in project otter by alibaba.

the class ExtractZooKeeperArbitrateEvent method single.

/**
 * <pre>
 * 算法:
 * 1. 创建对应的extracted节点,标志extract已完成
 * </pre>
 *
 * @param pipelineId 同步流id
 */
public void single(EtlEventData data) {
    Assert.notNull(data);
    String path = StagePathUtils.getExtractStage(data.getPipelineId(), data.getProcessId());
    data.setCurrNid(ArbitrateConfigUtils.getCurrentNid());
    // 序列化
    byte[] bytes = JsonUtils.marshalToByte(data, SerializerFeature.WriteClassName);
    try {
        zookeeper.create(path, bytes, CreateMode.PERSISTENT);
    } catch (ZkNoNodeException e) {
        // process节点不存在，出现了rollback/shutdown操作，直接忽略
        logger.warn("pipelineId[{}] extract ignore processId[{}] single by data:{}", new Object[] { data.getPipelineId(), data.getProcessId(), data });
    } catch (ZkNodeExistsException e) {
        // process节点已存在，出现了ConnectionLoss retry操作
        logger.warn("pipelineId[{}] extract ignore processId[{}] single by data:{}", new Object[] { data.getPipelineId(), data.getProcessId(), data });
    } catch (ZkInterruptedException e) {
    // ignore
    } catch (ZkException e) {
        throw new ArbitrateException("Extract_single", e.getMessage(), e);
    }
}

Example 4 with ZkException

use of org.I0Itec.zkclient.exception.ZkException in project otter by alibaba.

the class SelectZooKeeperArbitrateEvent method await.

// private TerminArbitrateEvent terminEvent;
/**
 * <pre>
 * 算法:
 * 1. 检查当前的Permit，阻塞等待其授权(解决Channel的pause状态处理)
 * 2. 开始阻塞获取符合条件的processId，创建空的EventData对象,添加next node信息后直接返回
 * </pre>
 */
public EtlEventData await(Long pipelineId) throws InterruptedException {
    Assert.notNull(pipelineId);
    PermitMonitor permitMonitor = ArbitrateFactory.getInstance(pipelineId, PermitMonitor.class);
    // 阻塞等待授权
    permitMonitor.waitForPermit();
    SelectStageListener selectStageListener = ArbitrateFactory.getInstance(pipelineId, SelectStageListener.class);
    // 符合条件的processId
    Long processId = selectStageListener.waitForProcess();
    ChannelStatus status = permitMonitor.getChannelPermit();
    if (status.isStart()) {
        try {
            EtlEventData eventData = new EtlEventData();
            eventData.setPipelineId(pipelineId);
            eventData.setProcessId(processId);
            // 返回当前时间
            eventData.setStartTime(new Date().getTime());
            // 获取下一个处理节点信息
            Node node = LoadBalanceFactory.getNextExtractNode(pipelineId);
            if (node == null) {
                // terminEvent.single(termin);
                throw new ArbitrateException("Select_single", "no next node");
            } else {
                eventData.setNextNid(node.getId());
                // 标记为已使用
                markUsed(eventData);
                // 只有这一条路返回
                return eventData;
            }
        } catch (ZkNoNodeException e) {
            logger.error("pipeline[{}] processId[{}] is invalid , retry again", pipelineId, processId);
            // /出现节点不存在，说明出现了error情况,递归调用重新获取一次
            return await(pipelineId);
        } catch (ZkException e) {
            throw new ArbitrateException("Select_await", e.getMessage(), e);
        }
    } else {
        logger.warn("pipelineId[{}] select ignore processId[{}] by status[{}]", new Object[] { pipelineId, processId, status });
        // add by ljh 2013-02-01
        // 遇到一个bug:
        // a. 某台机器发起了一个RESTART指令，然后开始删除process列表
        // b. 此时另一个台机器(select工作节点)，并没有收到PAUSE的推送，导致还会再创建一个process节点
        // c. 后续收到PAUSE指令后，丢弃了processId，就出现了unused的processId
        // 这里删除了，要考虑一个问题，就是和restart指令在并行删除同一个processId时的并发考虑，目前来看没问题
        String path = StagePathUtils.getProcess(pipelineId, processId);
        // 忽略删除失败
        zookeeper.delete(path);
        // 递归调用
        return await(pipelineId);
    }
}

Example 5 with ZkException

use of org.I0Itec.zkclient.exception.ZkException in project otter by alibaba.

the class SelectZooKeeperArbitrateEvent method single.

/**
 * <pre>
 * 算法:
 * 1. 创建对应的selected节点,标志selected已完成
 * </pre>
 *
 * @param pipelineId 同步流id
 */
public void single(EtlEventData data) {
    Assert.notNull(data);
    String path = StagePathUtils.getSelectStage(data.getPipelineId(), data.getProcessId());
    data.setCurrNid(ArbitrateConfigUtils.getCurrentNid());
    // 序列化
    byte[] bytes = JsonUtils.marshalToByte(data, SerializerFeature.WriteClassName);
    try {
        zookeeper.create(path, bytes, CreateMode.PERSISTENT);
    } catch (ZkNoNodeException e) {
        // process节点不存在，出现了rollback/shutdown操作，直接忽略
        logger.warn("pipelineId[{}] select ignore processId[{}] single by data:{}", new Object[] { data.getPipelineId(), data.getProcessId(), data });
    } catch (ZkNodeExistsException e) {
        // process节点已存在，出现了ConnectionLoss retry操作
        logger.warn("pipelineId[{}] select ignore processId[{}] single by data:{}", new Object[] { data.getPipelineId(), data.getProcessId(), data });
    } catch (ZkException e) {
        throw new ArbitrateException("Select_single", e.getMessage(), e);
    }
}