程序包 org.apache.iotdb.confignode.manager

类 TriggerManager

java.lang.Object

org.apache.iotdb.confignode.manager.TriggerManager

public class TriggerManager
extends java.lang.Object

构造器概要

构造器

构造器	说明
TriggerManager(ConfigManager configManager, TriggerInfo triggerInfo)

方法概要

修饰符和类型	方法	说明
org.apache.iotdb.common.rpc.thrift.TSStatus	createTrigger(org.apache.iotdb.confignode.rpc.thrift.TCreateTriggerReq req)	Create a trigger in cluster.
org.apache.iotdb.common.rpc.thrift.TSStatus	dropTrigger(org.apache.iotdb.confignode.rpc.thrift.TDropTriggerReq req)
org.apache.iotdb.confignode.rpc.thrift.TGetLocationForTriggerResp	getLocationOfStatefulTrigger(java.lang.String triggerName)
TriggerInfo	getTriggerInfo()
org.apache.iotdb.confignode.rpc.thrift.TGetJarInListResp	getTriggerJar(org.apache.iotdb.confignode.rpc.thrift.TGetJarInListReq req)
org.apache.iotdb.confignode.rpc.thrift.TGetTriggerTableResp	getTriggerTable(boolean onlyStateful)
org.apache.iotdb.common.rpc.thrift.TSStatus	transferTrigger(java.util.List<org.apache.iotdb.common.rpc.thrift.TDataNodeLocation> newUnknownDataNodeList, java.util.Map<java.lang.Integer,org.apache.iotdb.common.rpc.thrift.TDataNodeLocation> dataNodeLocationMap)	Step1: Mark Stateful Triggers on UnknownDataNodes as TTriggerState.TRANSFERRING.
java.util.List<org.apache.iotdb.common.rpc.thrift.TSStatus>	updateTriggerLocation(java.lang.String triggerName, org.apache.iotdb.common.rpc.thrift.TDataNodeLocation dataNodeLocation, java.util.Map<java.lang.Integer,org.apache.iotdb.common.rpc.thrift.TDataNodeLocation> dataNodeLocationMap)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

TriggerManager

public TriggerManager(ConfigManager configManager,
                      TriggerInfo triggerInfo)

方法详细资料

getTriggerInfo

public TriggerInfo getTriggerInfo()

createTrigger

public org.apache.iotdb.common.rpc.thrift.TSStatus createTrigger(org.apache.iotdb.confignode.rpc.thrift.TCreateTriggerReq req)

Create a trigger in cluster.

If TriggerType is STATELESS, we should create TriggerInstance on all DataNodes, the DataNodeLocation in TriggerInformation will be null.

If TriggerType is STATEFUL, we should create TriggerInstance on the DataNode with the lowest load, and DataNodeLocation of this DataNode will be saved.

All DataNodes will add TriggerInformation of this trigger in local TriggerTable.

参数:

req - the createTrigger request

返回:

status of create this trigger

dropTrigger

public org.apache.iotdb.common.rpc.thrift.TSStatus dropTrigger(org.apache.iotdb.confignode.rpc.thrift.TDropTriggerReq req)

getTriggerTable

public org.apache.iotdb.confignode.rpc.thrift.TGetTriggerTableResp getTriggerTable(boolean onlyStateful)

getLocationOfStatefulTrigger

public org.apache.iotdb.confignode.rpc.thrift.TGetLocationForTriggerResp getLocationOfStatefulTrigger(java.lang.String triggerName)

getTriggerJar

public org.apache.iotdb.confignode.rpc.thrift.TGetJarInListResp getTriggerJar(org.apache.iotdb.confignode.rpc.thrift.TGetJarInListReq req)

transferTrigger

public org.apache.iotdb.common.rpc.thrift.TSStatus transferTrigger(java.util.List<org.apache.iotdb.common.rpc.thrift.TDataNodeLocation> newUnknownDataNodeList,
                                                                   java.util.Map<java.lang.Integer,org.apache.iotdb.common.rpc.thrift.TDataNodeLocation> dataNodeLocationMap)

Step1: Mark Stateful Triggers on UnknownDataNodes as TTriggerState.TRANSFERRING.

Step2: Get all Transferring Triggers marked in Step1.

Step3: For each trigger gotten in Step2, find the DataNode with the lowest load, then transfer the Stateful Trigger to it and update this information on all DataNodes.

Step4: Update the newest location on ConfigNodes.

参数:

dataNodeLocationMap - The DataNodes with NodeStatus.Running State

返回:

result of transferTrigger

updateTriggerLocation

public java.util.List<org.apache.iotdb.common.rpc.thrift.TSStatus> updateTriggerLocation(java.lang.String triggerName,
                                                                                         org.apache.iotdb.common.rpc.thrift.TDataNodeLocation dataNodeLocation,
                                                                                         java.util.Map<java.lang.Integer,org.apache.iotdb.common.rpc.thrift.TDataNodeLocation> dataNodeLocationMap)