org.apache.flink.runtime.rest.handler.taskmanager.TaskManagerLogsHandler Maven / Gradle / Ivy
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* 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.
*/
package org.apache.flink.runtime.rest.handler.taskmanager;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.resourcemanager.ResourceManagerGateway;
import org.apache.flink.runtime.resourcemanager.exceptions.UnknownTaskExecutorException;
import org.apache.flink.runtime.rest.handler.HandlerRequest;
import org.apache.flink.runtime.rest.handler.RestHandlerException;
import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
import org.apache.flink.runtime.rest.messages.MessageHeaders;
import org.apache.flink.runtime.rest.messages.taskmanager.FileListsParameters;
import org.apache.flink.runtime.rest.messages.taskmanager.FileNameQueryParameter;
import org.apache.flink.runtime.rest.messages.taskmanager.LogInfo;
import org.apache.flink.runtime.rest.messages.taskmanager.LogsInfo;
import org.apache.flink.runtime.rest.messages.taskmanager.TaskManagerIdPathParameter;
import org.apache.flink.runtime.webmonitor.RestfulGateway;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import org.apache.flink.util.ExceptionUtils;
import org.apache.flink.util.Preconditions;
import org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpResponseStatus;
import javax.annotation.Nonnull;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionException;
import java.util.stream.Collectors;
/**
* Handler which serves detailed TaskManager information.
*/
public class TaskManagerLogsHandler extends AbstractTaskManagerHandler {
private final GatewayRetriever resourceManagerGatewayRetriever;
public TaskManagerLogsHandler(
CompletableFuture localRestAddress,
GatewayRetriever leaderRetriever,
Time timeout,
Map responseHeaders,
MessageHeaders messageHeaders,
GatewayRetriever resourceManagerGatewayRetriever) {
super(localRestAddress, leaderRetriever, timeout, responseHeaders, messageHeaders, resourceManagerGatewayRetriever);
this.resourceManagerGatewayRetriever = Preconditions.checkNotNull(resourceManagerGatewayRetriever);
}
@Override
protected CompletableFuture handleRequest(
@Nonnull HandlerRequest request,
@Nonnull ResourceManagerGateway gateway) throws RestHandlerException {
final ResourceID taskManagerId = request.getPathParameter(TaskManagerIdPathParameter.class);
final List fileNameTmpList = request.getQueryParameter(FileNameQueryParameter.class);
final String fileName;
if (fileNameTmpList.isEmpty()) {
fileName = null;
} else {
fileName = fileNameTmpList.get(0);
}
final ResourceManagerGateway resourceManagerGateway = getResourceManagerGateway(resourceManagerGatewayRetriever);
final CompletableFuture>> logsWithLengthFuture = resourceManagerGateway.requestTaskManagerLogList(taskManagerId, timeout);
return logsWithLengthFuture.thenApply(logName2Sizes -> {
if (null != logName2Sizes) {
if (null == fileName) {
Collection logs = logName2Sizes.stream().map(logName2Size -> new LogInfo(logName2Size.f0, logName2Size.f1)).collect(Collectors.toSet());
return new LogsInfo(logs);
} else {
Optional> logOpt = logName2Sizes.stream().filter(l -> l.f0.equals(fileName)).findFirst();
if (logOpt.isPresent()) {
Tuple2 log = logOpt.get();
List logs = new ArrayList();
logs.add(new LogInfo(log.f0, log.f1));
return new LogsInfo(logs);
} else {
return LogsInfo.empty();
}
}
} else {
return LogsInfo.empty();
}
}).exceptionally(
(Throwable throwable) -> {
final Throwable strippedThrowable = ExceptionUtils.stripExecutionException(throwable);
if (strippedThrowable instanceof UnknownTaskExecutorException) {
throw new CompletionException(
new RestHandlerException(
"Could not find TaskExecutor " + taskManagerId + '.',
HttpResponseStatus.NOT_FOUND,
strippedThrowable));
} else {
throw new CompletionException(strippedThrowable);
}
}
);
}
}