Package com.linkedin.venice.controller

Class AdminCommandExecutionTracker

java.lang.Object

com.linkedin.venice.controller.AdminCommandExecutionTracker

public class AdminCommandExecutionTracker
extends java.lang.Object

This class is used to track the execution of the async admin command. Async admin command is a kind of admin command which is sent to a parent controller and propagated through a Kafka admin topic. Eventually command would be executed by the controller in each PROD fabric.

The context of command execution would be stored in this tracker and expired in case it lives longer than TTL. It also provides a way to check the latest execution status of given command by sending requests to remote fabric. But the checking logic is defined in a closure when the command was created.

This class is Thread-safe.

Constructor Summary

Constructors

Constructor	Description
AdminCommandExecutionTracker(java.lang.String cluster, ExecutionIdAccessor executionIdAccessor, java.util.Map<java.lang.String,ControllerClient> fabricToControllerClientsMap)
AdminCommandExecutionTracker(java.lang.String cluster, ExecutionIdAccessor executionIdAccessor, java.util.Map<java.lang.String,ControllerClient> fabricToControllerClientsMap, int executionTTLHour)

Method Summary

Modifier and Type	Method	Description
AdminCommandExecution	checkExecutionStatus(long id)	Check the latest status of execution in remote fabrics.
AdminCommandExecution	createExecution(java.lang.String operation)	Create an execution context of a command.
long	getLastExecutionId()
void	startTrackingExecution(AdminCommandExecution execution)	Add execution context into local memory and expired old executions if needed.

Methods inherited from class java.lang.Object

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

Constructor Detail

AdminCommandExecutionTracker

public AdminCommandExecutionTracker(java.lang.String cluster,
                                    ExecutionIdAccessor executionIdAccessor,
                                    java.util.Map<java.lang.String,ControllerClient> fabricToControllerClientsMap,
                                    int executionTTLHour)

AdminCommandExecutionTracker

public AdminCommandExecutionTracker(java.lang.String cluster,
                                    ExecutionIdAccessor executionIdAccessor,
                                    java.util.Map<java.lang.String,ControllerClient> fabricToControllerClientsMap)

Method Detail

createExecution

public AdminCommandExecution createExecution(java.lang.String operation)

Create an execution context of a command.

startTrackingExecution

public void startTrackingExecution(AdminCommandExecution execution)

Add execution context into local memory and expired old executions if needed.

checkExecutionStatus

public AdminCommandExecution checkExecutionStatus(long id)

Check the latest status of execution in remote fabrics.

getLastExecutionId

public long getLastExecutionId()