org.apache.slider.server.services.utility

Class LaunchedWorkflowCompositeService

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.service.CompositeService

org.apache.slider.server.services.workflow.WorkflowCompositeService

org.apache.slider.server.services.utility.LaunchedWorkflowCompositeService

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.service.Service, org.apache.hadoop.service.ServiceStateChangeListener, RunService, ServiceParent

Direct Known Subclasses:

AbstractSliderLaunchedService

public class LaunchedWorkflowCompositeService
extends WorkflowCompositeService
implements RunService

This is a workflow compositoe service which can be launched from the CLI ... catches the arguments and implements a stub runService operation.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.service.CompositeService

org.apache.hadoop.service.CompositeService.CompositeServiceShutdownHook

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

org.apache.hadoop.service.Service.STATE

Field Summary

Fields inherited from class org.apache.hadoop.service.CompositeService

STOP_ONLY_STARTED_SERVICES

Constructor Summary

Constructors

Constructor and Description
LaunchedWorkflowCompositeService(String name)
LaunchedWorkflowCompositeService(String name, org.apache.hadoop.service.Service... children)

Method Summary

Methods

Modifier and Type	Method and Description
void	addService(org.apache.hadoop.service.Service service) Add a service, and register it
org.apache.hadoop.conf.Configuration	bindArgs(org.apache.hadoop.conf.Configuration config, String... args) Pre-init argument binding
protected boolean	deployChildService(org.apache.hadoop.service.Service service) Run a child service -initing and starting it if this service has already passed those parts of its own lifecycle
protected String[]	getArgv()
protected static boolean	isSet(String s)
protected static boolean	isUnset(String s) Implementation of set-ness, groovy definition of true/false for a string
int	runService() Run a service.

Methods inherited from class org.apache.slider.server.services.workflow.WorkflowCompositeService

stateChanged

Methods inherited from class org.apache.hadoop.service.CompositeService

addIfService, getServices, removeService, serviceInit, serviceStart, serviceStop

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.service.Service

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, registerServiceListener, start, stop, unregisterServiceListener, waitForServiceToStop

Methods inherited from interface org.apache.slider.server.services.workflow.ServiceParent

getServices

Constructor Detail

LaunchedWorkflowCompositeService

public LaunchedWorkflowCompositeService(String name)

LaunchedWorkflowCompositeService

public LaunchedWorkflowCompositeService(String name,
                                org.apache.hadoop.service.Service... children)

Method Detail

isUnset

protected static boolean isUnset(String s)

Implementation of set-ness, groovy definition of true/false for a string

Parameters:

s -

Returns:

true iff the string is non-null and non-empty

isSet

protected static boolean isSet(String s)

getArgv

protected String[] getArgv()

bindArgs

public org.apache.hadoop.conf.Configuration bindArgs(org.apache.hadoop.conf.Configuration config,
                                            String... args)
                                              throws Exception

Pre-init argument binding

Specified by:

bindArgs in interface RunService

Parameters:

config - the initial configuration build up by the service launcher.

args - argument list list of arguments passed to the command line after any launcher-specific commands have been stripped.

Returns:

the configuration

Throws:

Exception

runService

public int runService()
               throws Throwable

Description copied from interface: RunService

Run a service. This called after Service.start()

Specified by:

runService in interface RunService

Returns:

the exit code

Throws:

Throwable - any exception to report

addService

public void addService(org.apache.hadoop.service.Service service)

Description copied from class: WorkflowCompositeService

Add a service, and register it

Specified by:

addService in interface ServiceParent

Overrides:

addService in class WorkflowCompositeService

Parameters:

service - the Service to be added. Important: do not add a service to a parent during your own serviceInit/start, in Hadoop 2.2; you will trigger a ConcurrentModificationException.

deployChildService

protected boolean deployChildService(org.apache.hadoop.service.Service service)

Run a child service -initing and starting it if this service has already passed those parts of its own lifecycle

Parameters:

service - the service to start