org.apache.flink.runtime.rest.handler

Class RedirectHandler<T extends RestfulGateway>

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<org.apache.flink.shaded.netty4.io.netty.handler.codec.http.router.Routed>

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

Type Parameters:

T - type of the leader to retrieve

All Implemented Interfaces:

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

Direct Known Subclasses:

AbstractHandler, RuntimeMonitorHandler, StaticFileServerHandler, TaskManagerLogHandler

@ChannelHandler.Sharable
public abstract class RedirectHandler<T extends RestfulGateway>
extends org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler<org.apache.flink.shaded.netty4.io.netty.handler.codec.http.router.Routed>

SimpleChannelInboundHandler which encapsulates the redirection logic for the REST endpoints.

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

Modifier and Type	Field and Description
protected GatewayRetriever<? extends T>	leaderRetriever
protected CompletableFuture<String>	localAddressFuture
protected org.slf4j.Logger	logger
protected Map<String,String>	responseHeaders
protected Time	timeout

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RedirectHandler(CompletableFuture<String> localAddressFuture, GatewayRetriever<? extends T> leaderRetriever, Time timeout, Map<String,String> responseHeaders)

Method Summary

Modifier and Type	Method and Description
protected void	channelRead0(org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandlerContext channelHandlerContext, org.apache.flink.shaded.netty4.io.netty.handler.codec.http.router.Routed routed)
protected abstract void	respondAsLeader(org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandlerContext channelHandlerContext, org.apache.flink.shaded.netty4.io.netty.handler.codec.http.router.Routed routed, T gateway)

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

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.shaded.netty4.io.netty.channel.ChannelHandler

handlerAdded, handlerRemoved

Field Detail

logger

protected final org.slf4j.Logger logger

localAddressFuture

protected final CompletableFuture<String> localAddressFuture

leaderRetriever

protected final GatewayRetriever<? extends T extends RestfulGateway> leaderRetriever

timeout

protected final Time timeout

responseHeaders

protected final Map<String,String> responseHeaders

Constructor Detail

RedirectHandler

protected RedirectHandler(@Nonnull
                          CompletableFuture<String> localAddressFuture,
                          @Nonnull
                          GatewayRetriever<? extends T> leaderRetriever,
                          @Nonnull
                          Time timeout,
                          @Nonnull
                          Map<String,String> responseHeaders)

Method Detail

channelRead0

protected void channelRead0(org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandlerContext channelHandlerContext,
                            org.apache.flink.shaded.netty4.io.netty.handler.codec.http.router.Routed routed)
                     throws Exception

Specified by:

channelRead0 in class org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler<org.apache.flink.shaded.netty4.io.netty.handler.codec.http.router.Routed>

Throws:

Exception

respondAsLeader

protected abstract void respondAsLeader(org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandlerContext channelHandlerContext,
                                        org.apache.flink.shaded.netty4.io.netty.handler.codec.http.router.Routed routed,
                                        T gateway)
                                 throws Exception

Throws:

Exception