org.apache.samza.zk.ZkBarrierListener类的使用及代码示例

x33g5p2x  于2022-02-05 转载在 其他  
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本文整理了Java中org.apache.samza.zk.ZkBarrierListener类的一些代码示例，展示了ZkBarrierListener类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ZkBarrierListener类的具体详情如下：
包路径：org.apache.samza.zk.ZkBarrierListener
类名称：ZkBarrierListener

ZkBarrierListener介绍

[英]An interface for listening to ZkBarrierForVersionUpgrade related events
[中]用于收听ZkBarrierForVersionUpgrade相关事件的接口

代码示例

代码示例来源：origin: apache/samza

@Override
public void doHandleDataChange(String dataPath, Object data) {
 LOG.info(String.format("Received barrierState change notification for barrier version: %s from zkNode: %s with data: %s.", barrierVersion, dataPath, data));
 State barrierState = (State) data;
 List<State> expectedBarrierStates = ImmutableList.of(State.DONE, State.TIMED_OUT);
 if (barrierState != null && expectedBarrierStates.contains(barrierState)) {
  zkUtils.unsubscribeDataChanges(barrierStatePath, this);
  barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierStateChanged(barrierVersion, (State) data));
 } else {
  LOG.debug("Barrier version: {} is at state: {}. Ignoring the barrierState change notification.", barrierVersion, barrierState);
 }
}

代码示例来源：origin: org.apache.samza/samza-core_2.12

/**
 * Creates a shared barrier sub-tree in ZK
 *
 * @param version Version associated with the Barrier
 * @param participants List of expected participated for this barrier to complete
 */
public void create(final String version, List<String> participants) {
 LOG.info(String.format("Creating barrier with version: %s, participants: %s.", version, participants));
 String barrierRoot = keyBuilder.getBarrierRoot();
 String barrierParticipantsPath = keyBuilder.getBarrierParticipantsPath(version);
 String barrierStatePath = keyBuilder.getBarrierStatePath(version);
 zkUtils.validatePaths(new String[]{
   barrierRoot,
   keyBuilder.getBarrierPath(version),
   barrierParticipantsPath,
   barrierStatePath});
 LOG.info("Marking the barrier state: {} as {}.", barrierStatePath, State.NEW);
 zkUtils.writeData(barrierStatePath, State.NEW);
 LOG.info("Subscribing child changes on the path: {} for barrier version: {}.", barrierParticipantsPath, version);
 zkUtils.subscribeChildChanges(barrierParticipantsPath, new ZkBarrierChangeHandler(version, participants, zkUtils));
 barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierCreated(version));
}

代码示例来源：origin: apache/samza

/**
 * Creates a shared barrier sub-tree in ZK
 *
 * @param version Version associated with the Barrier
 * @param participants List of expected participated for this barrier to complete
 */
public void create(final String version, List<String> participants) {
 LOG.info(String.format("Creating barrier with version: %s, participants: %s.", version, participants));
 String barrierRoot = keyBuilder.getBarrierRoot();
 String barrierParticipantsPath = keyBuilder.getBarrierParticipantsPath(version);
 String barrierStatePath = keyBuilder.getBarrierStatePath(version);
 zkUtils.validatePaths(new String[]{
   barrierRoot,
   keyBuilder.getBarrierPath(version),
   barrierParticipantsPath,
   barrierStatePath});
 LOG.info("Marking the barrier state: {} as {}.", barrierStatePath, State.NEW);
 zkUtils.writeData(barrierStatePath, State.NEW);
 LOG.info("Subscribing child changes on the path: {} for barrier version: {}.", barrierParticipantsPath, version);
 zkUtils.subscribeChildChanges(barrierParticipantsPath, new ZkBarrierChangeHandler(version, participants, zkUtils));
 barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierCreated(version));
}

代码示例来源：origin: org.apache.samza/samza-core_2.11

@Override
public void doHandleDataChange(String dataPath, Object data) {
 LOG.info(String.format("Received barrierState change notification for barrier version: %s from zkNode: %s with data: %s.", barrierVersion, dataPath, data));
 State barrierState = (State) data;
 List<State> expectedBarrierStates = ImmutableList.of(State.DONE, State.TIMED_OUT);
 if (barrierState != null && expectedBarrierStates.contains(barrierState)) {
  zkUtils.unsubscribeDataChanges(barrierStatePath, this);
  barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierStateChanged(barrierVersion, (State) data));
 } else {
  LOG.debug("Barrier version: {} is at state: {}. Ignoring the barrierState change notification.", barrierVersion, barrierState);
 }
}

代码示例来源：origin: org.apache.samza/samza-core_2.10

/**
 * Creates a shared barrier sub-tree in ZK
 *
 * @param version Version associated with the Barrier
 * @param participants List of expected participated for this barrier to complete
 */
public void create(final String version, List<String> participants) {
 LOG.info(String.format("Creating barrier with version: %s, participants: %s.", version, participants));
 String barrierRoot = keyBuilder.getBarrierRoot();
 String barrierParticipantsPath = keyBuilder.getBarrierParticipantsPath(version);
 String barrierStatePath = keyBuilder.getBarrierStatePath(version);
 zkUtils.validatePaths(new String[]{
   barrierRoot,
   keyBuilder.getBarrierPath(version),
   barrierParticipantsPath,
   barrierStatePath});
 LOG.info("Marking the barrier state: {} as {}.", barrierStatePath, State.NEW);
 zkUtils.writeData(barrierStatePath, State.NEW);
 LOG.info("Subscribing child changes on the path: {} for barrier version: {}.", barrierParticipantsPath, version);
 zkUtils.subscribeChildChanges(barrierParticipantsPath, new ZkBarrierChangeHandler(version, participants, zkUtils));
 barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierCreated(version));
}

代码示例来源：origin: org.apache.samza/samza-core

@Override
public void doHandleDataChange(String dataPath, Object data) {
 LOG.info(String.format("Received barrierState change notification for barrier version: %s from zkNode: %s with data: %s.", barrierVersion, dataPath, data));
 State barrierState = (State) data;
 List<State> expectedBarrierStates = ImmutableList.of(State.DONE, State.TIMED_OUT);
 if (barrierState != null && expectedBarrierStates.contains(barrierState)) {
  zkUtils.unsubscribeDataChanges(barrierStatePath, this);
  barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierStateChanged(barrierVersion, (State) data));
 } else {
  LOG.debug("Barrier version: {} is at state: {}. Ignoring the barrierState change notification.", barrierVersion, barrierState);
 }
}

代码示例来源：origin: org.apache.samza/samza-core

/**
 * Creates a shared barrier sub-tree in ZK
 *
 * @param version Version associated with the Barrier
 * @param participants List of expected participated for this barrier to complete
 */
public void create(final String version, List<String> participants) {
 LOG.info(String.format("Creating barrier with version: %s, participants: %s.", version, participants));
 String barrierRoot = keyBuilder.getBarrierRoot();
 String barrierParticipantsPath = keyBuilder.getBarrierParticipantsPath(version);
 String barrierStatePath = keyBuilder.getBarrierStatePath(version);
 zkUtils.validatePaths(new String[]{
   barrierRoot,
   keyBuilder.getBarrierPath(version),
   barrierParticipantsPath,
   barrierStatePath});
 LOG.info("Marking the barrier state: {} as {}.", barrierStatePath, State.NEW);
 zkUtils.writeData(barrierStatePath, State.NEW);
 LOG.info("Subscribing child changes on the path: {} for barrier version: {}.", barrierParticipantsPath, version);
 zkUtils.subscribeChildChanges(barrierParticipantsPath, new ZkBarrierChangeHandler(version, participants, zkUtils));
 barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierCreated(version));
}

代码示例来源：origin: org.apache.samza/samza-core_2.10

@Override
public void doHandleDataChange(String dataPath, Object data) {
 LOG.info(String.format("Received barrierState change notification for barrier version: %s from zkNode: %s with data: %s.", barrierVersion, dataPath, data));
 State barrierState = (State) data;
 List<State> expectedBarrierStates = ImmutableList.of(State.DONE, State.TIMED_OUT);
 if (barrierState != null && expectedBarrierStates.contains(barrierState)) {
  zkUtils.unsubscribeDataChanges(barrierStatePath, this);
  barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierStateChanged(barrierVersion, (State) data));
 } else {
  LOG.debug("Barrier version: {} is at state: {}. Ignoring the barrierState change notification.", barrierVersion, barrierState);
 }
}

代码示例来源：origin: org.apache.samza/samza-core_2.11

/**
 * Creates a shared barrier sub-tree in ZK
 *
 * @param version Version associated with the Barrier
 * @param participants List of expected participated for this barrier to complete
 */
public void create(final String version, List<String> participants) {
 LOG.info(String.format("Creating barrier with version: %s, participants: %s.", version, participants));
 String barrierRoot = keyBuilder.getBarrierRoot();
 String barrierParticipantsPath = keyBuilder.getBarrierParticipantsPath(version);
 String barrierStatePath = keyBuilder.getBarrierStatePath(version);
 zkUtils.validatePaths(new String[]{
   barrierRoot,
   keyBuilder.getBarrierPath(version),
   barrierParticipantsPath,
   barrierStatePath});
 LOG.info("Marking the barrier state: {} as {}.", barrierStatePath, State.NEW);
 zkUtils.writeData(barrierStatePath, State.NEW);
 LOG.info("Subscribing child changes on the path: {} for barrier version: {}.", barrierParticipantsPath, version);
 zkUtils.subscribeChildChanges(barrierParticipantsPath, new ZkBarrierChangeHandler(version, participants, zkUtils));
 barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierCreated(version));
}

代码示例来源：origin: org.apache.samza/samza-core_2.12

@Override
public void doHandleDataChange(String dataPath, Object data) {
 LOG.info(String.format("Received barrierState change notification for barrier version: %s from zkNode: %s with data: %s.", barrierVersion, dataPath, data));
 State barrierState = (State) data;
 List<State> expectedBarrierStates = ImmutableList.of(State.DONE, State.TIMED_OUT);
 if (barrierState != null && expectedBarrierStates.contains(barrierState)) {
  zkUtils.unsubscribeDataChanges(barrierStatePath, this);
  barrierListenerOptional.ifPresent(zkBarrierListener -> zkBarrierListener.onBarrierStateChanged(barrierVersion, (State) data));
 } else {
  LOG.debug("Barrier version: {} is at state: {}. Ignoring the barrierState change notification.", barrierVersion, barrierState);
 }
}

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