Package org.apache.druid.java.util.metrics

Class NoopTaskHolder

java.lang.Object

org.apache.druid.java.util.metrics.NoopTaskHolder

All Implemented Interfaces:

TaskHolder

public class NoopTaskHolder
extends Object
implements TaskHolder

A TaskHolder implementation for all servers that are not CliPeon.

This holder does not provide task information and will return null from all its methods.

Constructor Summary

Constructors

Constructor	Description
NoopTaskHolder()

Method Summary

Modifier and Type	Method	Description
String	getDataSource()
String	getGroupId()
Map<String,String>	getMetricDimensions()
String	getTaskId()
String	getTaskType()

Methods inherited from class java.lang.Object

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

Constructor Details

NoopTaskHolder

public NoopTaskHolder()

Method Details

getDataSource

@Nullable
public String getDataSource()

Specified by:

getDataSource in interface TaskHolder

Returns:

the datasource name for the task, or null if called from a server that is not CliPeon.

getTaskId

@Nullable
public String getTaskId()

Specified by:

getTaskId in interface TaskHolder

Returns:

the taskId, or null if called from a server that is not CliPeon.

getTaskType

@Nullable
public String getTaskType()

Specified by:

getTaskType in interface TaskHolder

Returns:

the type name of this task, or null if called from a server that is not CliPeon.

getGroupId

@Nullable
public String getGroupId()

Specified by:

getGroupId in interface TaskHolder

Returns:

the group ID of this task, or null if called from a server that is not CliPeon.

getMetricDimensions

public Map<String,String> getMetricDimensions()

Specified by:

getMetricDimensions in interface TaskHolder

Returns:

a map of task holder dimensions, or an empty map if called from a server that is not CliPeon.