com.netflix.hystrix.contrib.javanica.collapser

Class CommandCollapser

java.lang.Object

com.netflix.hystrix.HystrixCollapser<java.util.List<java.lang.Object>,java.lang.Object,java.lang.Object>

com.netflix.hystrix.contrib.javanica.collapser.CommandCollapser

All Implemented Interfaces:

com.netflix.hystrix.HystrixExecutable<java.lang.Object>, com.netflix.hystrix.HystrixInvokable<java.lang.Object>, com.netflix.hystrix.HystrixObservable<java.lang.Object>

public class CommandCollapser
extends com.netflix.hystrix.HystrixCollapser<java.util.List<java.lang.Object>,java.lang.Object,java.lang.Object>

Collapses multiple requests into a single HystrixCommand execution based on a time window and optionally a max batch size.

Nested Class Summary

Nested classes/interfaces inherited from class com.netflix.hystrix.HystrixCollapser

com.netflix.hystrix.HystrixCollapser.CollapsedRequest<ResponseType,RequestArgumentType>, com.netflix.hystrix.HystrixCollapser.Scope, com.netflix.hystrix.HystrixCollapser.Setter

Constructor Summary

Constructors

Constructor and Description
CommandCollapser(MetaHolder metaHolder) Constructor with parameters.

Method Summary

Modifier and Type	Method and Description
protected com.netflix.hystrix.HystrixCommand<java.util.List<java.lang.Object>>	createCommand(java.util.Collection<com.netflix.hystrix.HystrixCollapser.CollapsedRequest<java.lang.Object,java.lang.Object>> collapsedRequests) Creates batch command.
java.lang.Object	getRequestArgument()
protected void	mapResponseToRequests(java.util.List<java.lang.Object> batchResponse, java.util.Collection<com.netflix.hystrix.HystrixCollapser.CollapsedRequest<java.lang.Object,java.lang.Object>> collapsedRequests)

Methods inherited from class com.netflix.hystrix.HystrixCollapser

execute, getCacheKey, getCollapserKey, getMetrics, getScope, observe, queue, shardRequests, toObservable, toObservable

Methods inherited from class java.lang.Object

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

Constructor Detail

CommandCollapser

public CommandCollapser(MetaHolder metaHolder)

Constructor with parameters.

Parameters:

metaHolder - the MetaHolder

Method Detail

getRequestArgument

public java.lang.Object getRequestArgument()

Specified by:

getRequestArgument in class com.netflix.hystrix.HystrixCollapser<java.util.List<java.lang.Object>,java.lang.Object,java.lang.Object>

createCommand

protected com.netflix.hystrix.HystrixCommand<java.util.List<java.lang.Object>> createCommand(java.util.Collection<com.netflix.hystrix.HystrixCollapser.CollapsedRequest<java.lang.Object,java.lang.Object>> collapsedRequests)

Creates batch command.

Specified by:

createCommand in class com.netflix.hystrix.HystrixCollapser<java.util.List<java.lang.Object>,java.lang.Object,java.lang.Object>

mapResponseToRequests

protected void mapResponseToRequests(java.util.List<java.lang.Object> batchResponse,
                                     java.util.Collection<com.netflix.hystrix.HystrixCollapser.CollapsedRequest<java.lang.Object,java.lang.Object>> collapsedRequests)

Specified by:

mapResponseToRequests in class com.netflix.hystrix.HystrixCollapser<java.util.List<java.lang.Object>,java.lang.Object,java.lang.Object>