org.apache.helix.manager.zk.ZKHelixDataAccessor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.helix.manager.zk.ZKHelixDataAccessor类的一些代码示例，展示了ZKHelixDataAccessor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。ZKHelixDataAccessor类的具体详情如下：
包路径：org.apache.helix.manager.zk.ZKHelixDataAccessor
类名称：ZKHelixDataAccessor

ZKHelixDataAccessor介绍

暂无

代码示例

代码示例来源：origin: apache/incubator-pinot

zkClient.waitUntilConnected(CommonConstants.Helix.ZkClient.DEFAULT_CONNECT_TIMEOUT_SEC, TimeUnit.SECONDS);
ZkBaseDataAccessor<ZNRecord> baseDataAccessor = new ZkBaseDataAccessor<>(zkClient);
ZKHelixDataAccessor zkHelixDataAccessor = new ZKHelixDataAccessor(_clusterName, baseDataAccessor);
PropertyKey property = zkHelixDataAccessor.keyBuilder().liveInstances();
List<String> liveInstances = zkHelixDataAccessor.getChildNames(property);
PropertyKey controllerLeaderKey = zkHelixDataAccessor.keyBuilder().controllerLeader();
LiveInstance controllerLeaderLiveInstance = zkHelixDataAccessor.getProperty(controllerLeaderKey);
ControllerInfo controllerInfo = new ControllerInfo();
controllerInfo.leaderName = controllerLeaderLiveInstance.getId();

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

@Deprecated
@Override
public <T extends HelixProperty> List<T> getChildValues(PropertyKey key) {
 return getChildValues(key, false);
}

代码示例来源：origin: apache/helix

@Deprecated
@Override
public <T extends HelixProperty> Map<String, T> getChildValuesMap(PropertyKey key) {
 return getChildValuesMap(key, false);
}

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

@Override
public void removeInstanceTag(String clusterName, String instanceName, String tag) {
 logger.info("Remove instance tag {} for instance {} in cluster {}.", tag, instanceName,
   clusterName);
 if (!ZKUtil.isClusterSetup(clusterName, _zkClient)) {
  throw new HelixException("cluster " + clusterName + " is not setup yet");
 }
 if (!ZKUtil.isInstanceSetup(_zkClient, clusterName, instanceName, InstanceType.PARTICIPANT)) {
  throw new HelixException(
    "cluster " + clusterName + " instance " + instanceName + " is not setup yet");
 }
 ZKHelixDataAccessor accessor =
   new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_zkClient));
 Builder keyBuilder = accessor.keyBuilder();
 InstanceConfig config = accessor.getProperty(keyBuilder.instanceConfig(instanceName));
 config.removeTag(tag);
 accessor.setProperty(keyBuilder.instanceConfig(instanceName), config);
}

代码示例来源：origin: apache/helix

public static String getInstanceSessionId(ZkClient zkClient, String clusterName,
  String instanceName) {
 ZKHelixDataAccessor accessor =
   new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
 Builder keyBuilder = accessor.keyBuilder();
 ZNRecord liveInstance = accessor.getProperty(keyBuilder.liveInstance(instanceName)).getRecord();
 return liveInstance.getSimpleField(LiveInstanceProperty.SESSION_ID.toString());
}

代码示例来源：origin: apache/helix

public void createExternalView(List<String> instanceNames, int partitions, int replicas,
  String dbName, long randomSeed) {
 ZKHelixDataAccessor accessor =
   new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor(client));
 Builder keyBuilder = accessor.keyBuilder();
 ExternalView externalView =
   new ExternalView(computeRoutingTable(instanceNames, partitions, replicas, dbName,
     randomSeed));
 accessor.setProperty(keyBuilder.externalView(dbName), externalView);
}

代码示例来源：origin: apache/incubator-pinot

zkClient.setZkSerializer(new ZNRecordSerializer());
HelixDataAccessor accessor =
  new ZKHelixDataAccessor(helixClusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
PropertyKey.Builder keyBuilder = accessor.keyBuilder();
accessor.setProperty(keyBuilder.stateModelDef(segmentStateModelName), newStateModelDef);

代码示例来源：origin: apache/helix

private void clearStatusUpdate(String clusterName, String instance, String resource,
  String partition) {
 // clear status update for error partition so verify() will not fail on old
 // errors
 ZKHelixDataAccessor accessor =
   new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
 Builder keyBuilder = accessor.keyBuilder();
 LiveInstance liveInstance = accessor.getProperty(keyBuilder.liveInstance(instance));
 accessor.removeProperty(keyBuilder.stateTransitionStatus(instance, liveInstance.getSessionId(),
   resource, partition));
}
// TODO: throw exception in reset()

代码示例来源：origin: apache/helix

public static String getPropertyAsString(ZkClient zkClient, String clusterName,
  PropertyKey propertyKey, MediaType mediaType) throws JsonGenerationException,
  JsonMappingException, IOException {
 ZKHelixDataAccessor accessor =
   new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
 ZNRecord record = EMPTY_ZNRECORD;
 HelixProperty property = accessor.getProperty(propertyKey);
 if (property != null) {
  record = property.getRecord();
 }
 return ObjectToJson(record);
}

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

List<String> sessions = _dataAccessor.getChildNames(_keyBuilder.sessions(_instanceName));
   _dataAccessor.getChildValues(_keyBuilder.currentStates(_instanceName, session));
    _dataAccessor.getProperty(_keyBuilder.stateModelDef(stateModelDefRef));
  BaseDataAccessor<ZNRecord> baseAccessor = _dataAccessor.getBaseDataAccessor();
  String curStatePath =
    _keyBuilder.currentState(_instanceName, _sessionId, lastCurState.getResourceName())
   _dataAccessor.getBaseDataAccessor().update(curStatePath,
     new CurStateCarryOverUpdater(_sessionId, initState, lastCurState),
     AccessOption.PERSISTENT);

代码示例来源：origin: apache/helix

private void cleanupRebalanceError() {
 ZKHelixDataAccessor accessor = new ZKHelixDataAccessor(CLUSTER_NAME, _baseAccessor);
 PropertyKey errorNodeKey =
   accessor.keyBuilder().controllerTaskError(RebalanceResourceFailure.name());
 accessor.removeProperty(errorNodeKey);
}

代码示例来源：origin: apache/helix

public void testParticipantStatusUpdates() throws Exception {
 ZKHelixDataAccessor accessor =
   new ZKHelixDataAccessor(CLUSTER_NAME, new ZkBaseDataAccessor(_gZkClient));
 Builder keyBuilder = accessor.keyBuilder();
 List<ExternalView> extViews = accessor.getChildValues(keyBuilder.externalViews());
 Assert.assertNotNull(extViews);

代码示例来源：origin: apache/helix

new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
Builder keyBuilder = new Builder(clusterName);
LiveInstance liveInstance = new LiveInstance("localhost_12918");
liveInstance.setSessionId("session_0");
liveInstance.setHelixVersion("version_0");
accessor.setProperty(keyBuilder.liveInstance("localhost_12918"), liveInstance);
accessor.removeProperty(keyBuilder.liveInstance("localhost_12918"));
});
Assert.assertNull(accessor.getProperty(keyBuilder.instanceConfig("localhost_12918")),
  "Instance config should be dropped");
Assert.assertFalse(

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

@Deprecated
@Override
public <T extends HelixProperty> List<T> getProperty(List<PropertyKey> keys) {
 return getProperty(keys, false);
}

代码示例来源：origin: apache/helix

public static String getInstancePropertiesAsString(ZkClient zkClient, String clusterName,
  PropertyKey propertyKey, MediaType mediaType) throws JsonGenerationException,
  JsonMappingException, IOException {
 zkClient.setZkSerializer(new ZNRecordSerializer());
 ZKHelixDataAccessor accessor =
   new ZKHelixDataAccessor(clusterName, new ZkBaseDataAccessor<ZNRecord>(zkClient));
 List<ZNRecord> records = HelixProperty.convertToList(accessor.getChildValues(propertyKey));
 return ObjectToJson(records);
}

代码示例来源：origin: apache/helix

@Override
@BeforeClass
public void beforeClass() throws Exception {
 System.out.println("START " + CLASS_NAME + " at " + new Date(System.currentTimeMillis()));
 // setup storage cluster
 _gSetupTool.addCluster(CLUSTER_NAME, true);
 for (int i = 0; i < NODE_NR; i++) {
  String storageNodeName = PARTICIPANT_PREFIX + "_" + (START_PORT + i);
  _gSetupTool.addInstanceToCluster(CLUSTER_NAME, storageNodeName);
 }
 // start controller
 String controllerName = CONTROLLER_PREFIX + "_0";
 _controller = new ClusterControllerManager(ZK_ADDR, CLUSTER_NAME, controllerName);
 _controller.syncStart();
 // start dummy participants
 for (int i = 0; i < NODE_NR; i++) {
  String instanceName = PARTICIPANT_PREFIX + "_" + (START_PORT + i);
  _instanceNames.add(instanceName);
  _participants[i] = new MockParticipantManager(ZK_ADDR, CLUSTER_NAME, instanceName);
  _participants[i].syncStart();
 }
 enablePersistBestPossibleAssignment(_gZkClient, CLUSTER_NAME, true);
 accessor = new ZKHelixDataAccessor(CLUSTER_NAME, _baseAccessor);
 errorNodeKey = accessor.keyBuilder().controllerTaskError(RebalanceResourceFailure.name());
 _clusterVerifier =
   new BestPossibleExternalViewVerifier.Builder(CLUSTER_NAME).setZkAddr(ZK_ADDR).build();
}

代码示例来源：origin: apache/helix

private void setupCluster(String clusterName, ZKHelixDataAccessor accessor) throws Exception {
 TestHelper.setupCluster(clusterName, ZK_ADDR, 12918, // participant start port
   "localhost", // participant name prefix
   resourceNamePrefix, // resource name prefix
   1, // resources
   15, // partitions per resource
   participantCount, // number of nodes
   3, // replicas
   "MasterSlave", IdealState.RebalanceMode.FULL_AUTO, true); // do rebalance
 PropertyKey.Builder keyBuilder = accessor.keyBuilder();
 ClusterConfig clusterConfig = accessor.getProperty(accessor.keyBuilder().clusterConfig());
 clusterConfig.setResourcePriorityField("Name");
 List<StateTransitionThrottleConfig> throttleConfigs = new ArrayList<>();
 throttleConfigs.add(
   new StateTransitionThrottleConfig(StateTransitionThrottleConfig.RebalanceType.LOAD_BALANCE,
     StateTransitionThrottleConfig.ThrottleScope.CLUSTER, 100));
 throttleConfigs.add(new StateTransitionThrottleConfig(
   StateTransitionThrottleConfig.RebalanceType.RECOVERY_BALANCE,
   StateTransitionThrottleConfig.ThrottleScope.CLUSTER, 100));
 clusterConfig.setStateTransitionThrottleConfigs(throttleConfigs);
 accessor.setProperty(keyBuilder.clusterConfig(), clusterConfig);
}

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

@Override
public <T extends HelixProperty> Map<String, T> getChildValuesMap(PropertyKey key,
  boolean throwException) {
 PropertyType type = key.getType();
 String parentPath = key.getPath();
 int options = constructOptions(type);
 List<T> children = getChildValues(key, throwException);
 Map<String, T> childValuesMap = new HashMap<String, T>();
 for (T t : children) {
  childValuesMap.put(t.getRecord().getId(), t);
 }
 return childValuesMap;
}

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

private void persistHistory(ParticipantHistory history) {
 PropertyKey propertyKey = _keyBuilder.participantHistory(_instanceName);
 if (!_dataAccessor.setProperty(propertyKey, history)) {
  LOG.error("Failed to persist participant history to zk!");
 }
}

代码示例来源：origin: apache/helix

@Override
 public void handleChildChange(String parentPath, List<String> currentChilds)
   throws Exception {
  if (currentChilds != null && currentChilds.size() > 1) {
   List<ZNRecord> records =
     accessor.getBaseDataAccessor().getChildren(parentPath, null, 0);
   int transitionMsgCount = 0;
   for (ZNRecord record : records) {
    Message msg = new Message(record);
    if (msg.getMsgType().equals(Message.MessageType.STATE_TRANSITION.name())) {
     transitionMsgCount++;
    }
   }
   if (transitionMsgCount > 1) {
    success.set(false);
    Assert.fail("Should not see more than 1 message");
   }
  }
 }
});

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