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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.dispatcher;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.runtime.blob.TransientBlobService;
import org.apache.flink.runtime.leaderelection.LeaderElectionService;
import org.apache.flink.runtime.resourcemanager.ResourceManagerGateway;
import org.apache.flink.runtime.rest.RestServerEndpointConfiguration;
import org.apache.flink.runtime.rest.handler.RestHandlerConfiguration;
import org.apache.flink.runtime.rest.handler.RestHandlerSpecification;
import org.apache.flink.runtime.rest.handler.job.JobSubmitHandler;
import org.apache.flink.runtime.rest.handler.legacy.ExecutionGraphCache;
import org.apache.flink.runtime.rest.handler.legacy.metrics.MetricFetcher;
import org.apache.flink.runtime.rpc.FatalErrorHandler;
import org.apache.flink.runtime.webmonitor.WebMonitorEndpoint;
import org.apache.flink.runtime.webmonitor.WebMonitorExtension;
import org.apache.flink.runtime.webmonitor.WebMonitorUtils;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import org.apache.flink.util.ExceptionUtils;
import org.apache.flink.util.FlinkException;
import org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandler;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ScheduledExecutorService;
/**
* REST endpoint for the {@link Dispatcher} component.
*/
public class DispatcherRestEndpoint extends WebMonitorEndpoint {
private WebMonitorExtension webSubmissionExtension;
public DispatcherRestEndpoint(
RestServerEndpointConfiguration endpointConfiguration,
GatewayRetriever leaderRetriever,
Configuration clusterConfiguration,
RestHandlerConfiguration restConfiguration,
GatewayRetriever resourceManagerRetriever,
TransientBlobService transientBlobService,
ScheduledExecutorService executor,
MetricFetcher metricFetcher,
LeaderElectionService leaderElectionService,
ExecutionGraphCache executionGraphCache,
FatalErrorHandler fatalErrorHandler) throws IOException {
super(
endpointConfiguration,
leaderRetriever,
clusterConfiguration,
restConfiguration,
resourceManagerRetriever,
transientBlobService,
executor,
metricFetcher,
leaderElectionService,
executionGraphCache,
fatalErrorHandler);
webSubmissionExtension = WebMonitorExtension.empty();
}
@Override
protected List> initializeHandlers(final CompletableFuture localAddressFuture) {
List> handlers = super.initializeHandlers(localAddressFuture);
// Add the Dispatcher specific handlers
final Time timeout = restConfiguration.getTimeout();
JobSubmitHandler jobSubmitHandler = new JobSubmitHandler(
leaderRetriever,
timeout,
responseHeaders,
executor,
clusterConfiguration);
handlers.add(Tuple2.of(jobSubmitHandler.getMessageHeaders(), jobSubmitHandler));
return handlers;
}
@Override
protected Collection> initializeWebSubmissionHandlers(CompletableFuture localAddressFuture) {
if (restConfiguration.isWebSubmitEnabled()) {
try {
final Time timeout = restConfiguration.getTimeout();
webSubmissionExtension = WebMonitorUtils.loadWebSubmissionExtension(
leaderRetriever,
timeout,
responseHeaders,
localAddressFuture,
uploadDir,
executor,
clusterConfiguration);
return webSubmissionExtension.getHandlers();
} catch (FlinkException e) {
if (log.isDebugEnabled()) {
log.debug("Failed to load web based job submission extension.", e);
} else {
log.info("Failed to load web based job submission extension. " +
"Probable reason: flink-runtime-web is not in the classpath.");
}
}
} else {
log.info("Web-based job submission is not enabled.");
}
return Collections.emptyList();
}
@Override
protected CompletableFuture shutDownInternal() {
final CompletableFuture shutdownFuture = super.shutDownInternal();
final CompletableFuture shutdownResultFuture = new CompletableFuture<>();
shutdownFuture.whenComplete(
(Void ignored, Throwable throwable) -> {
webSubmissionExtension.closeAsync().whenComplete(
(Void innerIgnored, Throwable innerThrowable) -> {
if (innerThrowable != null) {
shutdownResultFuture.completeExceptionally(
ExceptionUtils.firstOrSuppressed(innerThrowable, throwable));
} else if (throwable != null) {
shutdownResultFuture.completeExceptionally(throwable);
} else {
shutdownResultFuture.complete(null);
}
});
});
return shutdownResultFuture;
}
}
