org.apache.flink.runtime.rest.handler.job

Class AbstractSubtaskHandler<R extends ResponseBody,M extends SubtaskMessageParameters>

java.lang.Object

org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandlerAdapter

org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter

org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler<RoutedRequest>

org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler<T>

org.apache.flink.runtime.rest.handler.AbstractHandler<T,R,M>

org.apache.flink.runtime.rest.handler.AbstractRestHandler<RestfulGateway,EmptyRequestBody,R,M>

org.apache.flink.runtime.rest.handler.job.AbstractExecutionGraphHandler<R,M>

org.apache.flink.runtime.rest.handler.job.AbstractAccessExecutionGraphHandler<R,M>

org.apache.flink.runtime.rest.handler.job.AbstractJobVertexHandler<R,M>

org.apache.flink.runtime.rest.handler.job.AbstractSubtaskHandler<R,M>

Type Parameters:

R - the response type

M - the message parameters type

All Implemented Interfaces:

AutoCloseable, org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandler, org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandler, AutoCloseableAsync

Direct Known Subclasses:

AbstractSubtaskAttemptHandler, SubtaskCurrentAttemptDetailsHandler

public abstract class AbstractSubtaskHandler<R extends ResponseBody,M extends SubtaskMessageParameters>
extends AbstractJobVertexHandler<R,M>

Base class for request handlers whose response depends on a specific subtask (defined via the "SubtaskIndexPathParameter.KEY" in a specific job vertex, (defined via the "JobVertexIdPathParameter.KEY" parameter) in a specific job, defined via (defined via the "JobIDPathParameter.KEY" parameter).

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandler

org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields inherited from class org.apache.flink.runtime.rest.handler.AbstractHandler

log, MAPPER

Fields inherited from class org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler

leaderRetriever, logger, responseHeaders, timeout

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractSubtaskHandler(GatewayRetriever<? extends RestfulGateway> leaderRetriever, Time timeout, Map<String,String> responseHeaders, MessageHeaders<EmptyRequestBody,R,M> messageHeaders, ExecutionGraphCache executionGraphCache, Executor executor) Instantiates a new Abstract job vertex handler.

Method Summary

Modifier and Type	Method and Description
protected R	handleRequest(HandlerRequest<EmptyRequestBody> request, AccessExecutionJobVertex jobVertex) Called for each request after the corresponding AccessExecutionJobVertex has been retrieved from the AccessExecutionGraph.
protected abstract R	handleRequest(HandlerRequest<EmptyRequestBody> request, AccessExecutionVertex executionVertex) Called for each request after the corresponding AccessExecutionVertex has been retrieved from the AccessExecutionJobVertex.

Methods inherited from class org.apache.flink.runtime.rest.handler.job.AbstractJobVertexHandler

handleRequest

Methods inherited from class org.apache.flink.runtime.rest.handler.job.AbstractAccessExecutionGraphHandler

handleRequest

Methods inherited from class org.apache.flink.runtime.rest.handler.job.AbstractExecutionGraphHandler

handleRequest

Methods inherited from class org.apache.flink.runtime.rest.handler.AbstractRestHandler

getMessageHeaders, respondToRequest

Methods inherited from class org.apache.flink.runtime.rest.handler.AbstractHandler

closeAsync, closeHandlerAsync, respondAsLeader

Methods inherited from class org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler

channelRead0, getTimeout

Methods inherited from class org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler

acceptInboundMessage, channelRead

Methods inherited from class org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelInactive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, exceptionCaught, userEventTriggered

Methods inherited from class org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, handlerAdded, handlerRemoved, isSharable

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.util.AutoCloseableAsync

close

Methods inherited from interface org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandler

handlerAdded, handlerRemoved

Constructor Detail

AbstractSubtaskHandler

protected AbstractSubtaskHandler(GatewayRetriever<? extends RestfulGateway> leaderRetriever,
                                 Time timeout,
                                 Map<String,String> responseHeaders,
                                 MessageHeaders<EmptyRequestBody,R,M> messageHeaders,
                                 ExecutionGraphCache executionGraphCache,
                                 Executor executor)

Instantiates a new Abstract job vertex handler.

Parameters:

leaderRetriever - the leader retriever

timeout - the timeout

responseHeaders - the response headers

messageHeaders - the message headers

executionGraphCache - the execution graph cache

executor - the executor

Method Detail

handleRequest

protected R handleRequest(HandlerRequest<EmptyRequestBody> request,
                          AccessExecutionJobVertex jobVertex)
                   throws RestHandlerException

Description copied from class: AbstractJobVertexHandler

Called for each request after the corresponding AccessExecutionJobVertex has been retrieved from the AccessExecutionGraph.

Specified by:

handleRequest in class AbstractJobVertexHandler<R extends ResponseBody,M extends SubtaskMessageParameters>

Parameters:

request - the request

jobVertex - the execution job vertex

Returns:

the response

Throws:

RestHandlerException - if the handler could not process the request

handleRequest

protected abstract R handleRequest(HandlerRequest<EmptyRequestBody> request,
                                   AccessExecutionVertex executionVertex)
                            throws RestHandlerException

Called for each request after the corresponding AccessExecutionVertex has been retrieved from the AccessExecutionJobVertex.

Parameters:

request - the request

executionVertex - the execution vertex

Returns:

the response

Throws:

RestHandlerException - the rest handler exception