backtype.storm.task

Class WorkerTopologyContext

java.lang.Object

backtype.storm.task.GeneralTopologyContext

backtype.storm.task.WorkerTopologyContext

All Implemented Interfaces:

org.json.simple.JSONAware

Direct Known Subclasses:

TopologyContext

public class WorkerTopologyContext
extends GeneralTopologyContext

Field Summary

Fields

Modifier and Type	Field and Description
static String	SHARED_EXECUTOR

Fields inherited from class backtype.storm.task.GeneralTopologyContext

_stormConf

Constructor Summary

Constructors

Constructor and Description
WorkerTopologyContext(StormTopology topology, Map stormConf, Map<Integer,String> taskToComponent, Map<String,List<Integer>> componentToSortedTasks, Map<String,Map<String,Fields>> componentToStreamToFields, String stormId, String codeDir, String pidDir, Integer workerPort, List<Integer> workerTasks, Map<String,Object> defaultResources, Map<String,Object> userResources)

Method Summary

Modifier and Type	Method and Description
String	getCodeDir() Gets the location of the external resources for this worker on the local filesystem.
String	getPIDDir() If this task spawns any subprocesses, those subprocesses must immediately write their PID to this directory on the local filesystem to ensure that Storm properly destroys that process when the worker is shutdown.
Object	getResource(String name)
ExecutorService	getSharedExecutor()
Integer	getThisWorkerPort()
List<Integer>	getThisWorkerTasks() Gets all the task ids that are running in this worker process (including the task for this task).

Methods inherited from class backtype.storm.task.GeneralTopologyContext

getComponentCommon, getComponentId, getComponentIds, getComponentOutputFields, getComponentOutputFields, getComponentStreams, getComponentTasks, getRawTopology, getSources, getStormId, getTargets, getTaskToComponent, maxTopologyMessageTimeout, toJSONString

Methods inherited from class java.lang.Object

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

Field Detail

SHARED_EXECUTOR

public static final String SHARED_EXECUTOR

See Also:

Constant Field Values

Constructor Detail

WorkerTopologyContext

public WorkerTopologyContext(StormTopology topology,
                             Map stormConf,
                             Map<Integer,String> taskToComponent,
                             Map<String,List<Integer>> componentToSortedTasks,
                             Map<String,Map<String,Fields>> componentToStreamToFields,
                             String stormId,
                             String codeDir,
                             String pidDir,
                             Integer workerPort,
                             List<Integer> workerTasks,
                             Map<String,Object> defaultResources,
                             Map<String,Object> userResources)

Method Detail

getThisWorkerTasks

public List<Integer> getThisWorkerTasks()

Gets all the task ids that are running in this worker process (including the task for this task).

getThisWorkerPort

public Integer getThisWorkerPort()

getCodeDir

public String getCodeDir()

Gets the location of the external resources for this worker on the local filesystem. These external resources typically include bolts implemented in other languages, such as Ruby or Python.

getPIDDir

public String getPIDDir()

If this task spawns any subprocesses, those subprocesses must immediately write their PID to this directory on the local filesystem to ensure that Storm properly destroys that process when the worker is shutdown.

getResource

public Object getResource(String name)

getSharedExecutor

public ExecutorService getSharedExecutor()