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[FLINK-2732] Display TM logs in Dashboard
This closes apache#1790
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95 changes: 95 additions & 0 deletions
95
...time-web/src/main/java/org/apache/flink/runtime/webmonitor/RuntimeMonitorHandlerBase.java
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| @@ -0,0 +1,95 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package org.apache.flink.runtime.webmonitor; | ||
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| import io.netty.channel.ChannelHandler; | ||
| import io.netty.channel.ChannelHandlerContext; | ||
| import io.netty.channel.SimpleChannelInboundHandler; | ||
| import io.netty.handler.codec.http.HttpResponse; | ||
| import io.netty.handler.codec.http.router.KeepAliveWrite; | ||
| import io.netty.handler.codec.http.router.Routed; | ||
| import org.apache.flink.runtime.instance.ActorGateway; | ||
| import org.apache.flink.runtime.webmonitor.handlers.HandlerRedirectUtils; | ||
| import org.apache.flink.runtime.webmonitor.handlers.RequestHandler; | ||
| import scala.Option; | ||
| import scala.Tuple2; | ||
| import scala.concurrent.Await; | ||
| import scala.concurrent.Future; | ||
| import scala.concurrent.duration.FiniteDuration; | ||
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| import static com.google.common.base.Preconditions.checkNotNull; | ||
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| /** | ||
| * The Netty channel handler that processes all HTTP requests. | ||
| * This handler takes the path parameters and delegates the work to a {@link RequestHandler}. | ||
| * This handler also deals with setting correct response MIME types and returning | ||
| * proper codes, like OK, NOT_FOUND, or SERVER_ERROR. | ||
| */ | ||
| @ChannelHandler.Sharable | ||
| public abstract class RuntimeMonitorHandlerBase extends SimpleChannelInboundHandler<Routed> { | ||
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| private final JobManagerRetriever retriever; | ||
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| protected final Future<String> localJobManagerAddressFuture; | ||
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| protected final FiniteDuration timeout; | ||
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| protected String localJobManagerAddress; | ||
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| public RuntimeMonitorHandlerBase( | ||
| JobManagerRetriever retriever, | ||
| Future<String> localJobManagerAddressFuture, | ||
| FiniteDuration timeout) { | ||
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| this.retriever = checkNotNull(retriever); | ||
| this.localJobManagerAddressFuture = checkNotNull(localJobManagerAddressFuture); | ||
| this.timeout = checkNotNull(timeout); | ||
| } | ||
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| @Override | ||
| protected void channelRead0(ChannelHandlerContext ctx, Routed routed) throws Exception { | ||
| if (localJobManagerAddressFuture.isCompleted()) { | ||
| if (localJobManagerAddress == null) { | ||
| localJobManagerAddress = Await.result(localJobManagerAddressFuture, timeout); | ||
| } | ||
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| Option<Tuple2<ActorGateway, Integer>> jobManager = retriever.getJobManagerGatewayAndWebPort(); | ||
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| if (jobManager.isDefined()) { | ||
| Tuple2<ActorGateway, Integer> gatewayPort = jobManager.get(); | ||
| String redirectAddress = HandlerRedirectUtils.getRedirectAddress( | ||
| localJobManagerAddress, gatewayPort); | ||
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| if (redirectAddress != null) { | ||
| HttpResponse redirect = HandlerRedirectUtils.getRedirectResponse(redirectAddress, routed.path()); | ||
| KeepAliveWrite.flush(ctx, routed.request(), redirect); | ||
| } | ||
| else { | ||
| respondAsLeader(ctx, routed, gatewayPort._1()); | ||
| } | ||
| } else { | ||
| KeepAliveWrite.flush(ctx, routed.request(), HandlerRedirectUtils.getUnavailableResponse()); | ||
| } | ||
| } else { | ||
| KeepAliveWrite.flush(ctx, routed.request(), HandlerRedirectUtils.getUnavailableResponse()); | ||
| } | ||
| } | ||
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| protected abstract void respondAsLeader(ChannelHandlerContext ctx, Routed routed, ActorGateway jobManager); | ||
| } |
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