Package org.springframework.integration.file.tail

Class OSDelegatingFileTailingMessageProducer

java.lang.Object

org.springframework.integration.context.IntegrationObjectSupport

org.springframework.integration.endpoint.AbstractEndpoint

org.springframework.integration.endpoint.MessageProducerSupport

org.springframework.integration.file.tail.FileTailingMessageProducerSupport

org.springframework.integration.file.tail.OSDelegatingFileTailingMessageProducer

All Implemented Interfaces:

Runnable, Aware, BeanFactoryAware, BeanNameAware, DisposableBean, InitializingBean, SmartInitializingSingleton, ApplicationContextAware, ApplicationEventPublisherAware, Lifecycle, Phased, SmartLifecycle, ExpressionCapable, MessageProducer, IntegrationPattern, NamedComponent, ManageableLifecycle, ManageableSmartLifecycle, TrackableComponent, SchedulingAwareRunnable

public class OSDelegatingFileTailingMessageProducer
extends FileTailingMessageProducerSupport
implements SchedulingAwareRunnable

A file tailing message producer that delegates to the OS tail program. This is likely the most efficient mechanism on platforms that support it. Default options are "-F -n 0" (follow file name, no existing records).

Since:

3.0

Author:

Gary Russell, Gavin Gray, Ali Shahbour, Artem Bilan, Trung Pham

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.integration.file.tail.FileTailingMessageProducerSupport

FileTailingMessageProducerSupport.FileTailingEvent, FileTailingMessageProducerSupport.FileTailingIdleEvent

Field Summary

Fields inherited from class org.springframework.integration.file.tail.FileTailingMessageProducerSupport

DEFAULT_TAIL_ATTEMPTS_DELAY

Fields inherited from class org.springframework.integration.endpoint.AbstractEndpoint

lifecycleCondition, lifecycleLock

Fields inherited from class org.springframework.integration.context.IntegrationObjectSupport

EXPRESSION_PARSER, logger

Fields inherited from interface org.springframework.context.SmartLifecycle

DEFAULT_PHASE

Constructor Summary

Constructors

Constructor	Description
OSDelegatingFileTailingMessageProducer()

Method Summary

Modifier and Type	Method	Description
protected void	doStart()	Take no action by default.
protected void	doStop()	Take no action by default.
String	getCommand()
String	getComponentType()	Subclasses may implement this method to provide component type information.
boolean	isLongLived()
protected void	onInit()	Subclasses may implement this for initialization logic.
void	run()	Reads lines from stdout and sends in a message to the output channel.
void	setEnableStatusReader(boolean enableStatusReader)	If false, thread for capturing stderr will not be started and stderr output will be ignored.
void	setOptions(String options)

Methods inherited from class org.springframework.integration.file.tail.FileTailingMessageProducerSupport

getFile, getMissingFileDelay, getTaskExecutor, publish, send, setApplicationEventPublisher, setFile, setIdleEventInterval, setTailAttemptsDelay, setTaskExecutor

Methods inherited from class org.springframework.integration.endpoint.MessageProducerSupport

afterSingletonsInstantiated, buildErrorMessage, getErrorChannel, getErrorMessageAttributes, getIntegrationPatternType, getMessagingTemplate, getOutputChannel, sendErrorMessageIfNecessary, sendMessage, setErrorChannel, setErrorChannelName, setErrorMessageStrategy, setOutputChannel, setOutputChannelName, setSendTimeout, setShouldTrack, subscribeToPublisher

Methods inherited from class org.springframework.integration.endpoint.AbstractEndpoint

destroy, doStop, getPhase, getRole, isActive, isAutoStartup, isRunning, setAutoStartup, setPhase, setRole, start, stop, stop

Methods inherited from class org.springframework.integration.context.IntegrationObjectSupport

afterPropertiesSet, extractTypeIfPossible, generateId, getApplicationContext, getApplicationContextId, getBeanDescription, getBeanFactory, getBeanName, getChannelResolver, getComponentName, getConversionService, getExpression, getIntegrationProperties, getIntegrationProperty, getMessageBuilderFactory, getTaskScheduler, isInitialized, setApplicationContext, setBeanFactory, setBeanName, setChannelResolver, setComponentName, setConversionService, setMessageBuilderFactory, setPrimaryExpression, setTaskScheduler, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.integration.support.context.NamedComponent

getBeanName, getComponentName

Constructor Details

OSDelegatingFileTailingMessageProducer

public OSDelegatingFileTailingMessageProducer()

Method Details

setOptions

public void setOptions(String options)

setEnableStatusReader

public void setEnableStatusReader(boolean enableStatusReader)

If false, thread for capturing stderr will not be started and stderr output will be ignored.

Parameters:

enableStatusReader - true or false

Since:

4.3.6

getCommand

public String getCommand()

getComponentType

public String getComponentType()

Description copied from class: IntegrationObjectSupport

Subclasses may implement this method to provide component type information.

Specified by:

getComponentType in interface NamedComponent

Overrides:

getComponentType in class FileTailingMessageProducerSupport

isLongLived

public boolean isLongLived()

Specified by:

isLongLived in interface SchedulingAwareRunnable

onInit

protected void onInit()

Description copied from class: IntegrationObjectSupport

Subclasses may implement this for initialization logic.

Overrides:

onInit in class MessageProducerSupport

doStart

protected void doStart()

Description copied from class: MessageProducerSupport

Take no action by default. Subclasses may override this if they need lifecycle-managed behavior. Protected by 'lifecycleLock'.

Overrides:

doStart in class FileTailingMessageProducerSupport

doStop

protected void doStop()

Description copied from class: MessageProducerSupport

Take no action by default. Subclasses may override this if they need lifecycle-managed behavior.

Overrides:

doStop in class FileTailingMessageProducerSupport

run

public void run()

Reads lines from stdout and sends in a message to the output channel.

Specified by:

run in interface Runnable