org.apache.flink.runtime.rest.handler.cluster.ClusterConfigHandler 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.rest.handler.cluster;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.runtime.rest.handler.AbstractRestHandler;
import org.apache.flink.runtime.rest.handler.HandlerRequest;
import org.apache.flink.runtime.rest.handler.RestHandlerException;
import org.apache.flink.runtime.rest.messages.ClusterConfigurationInfo;
import org.apache.flink.runtime.rest.messages.EmptyMessageParameters;
import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
import org.apache.flink.runtime.rest.messages.MessageHeaders;
import org.apache.flink.runtime.webmonitor.RestfulGateway;
import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever;
import org.apache.flink.util.Preconditions;
import javax.annotation.Nonnull;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
/**
* Handler which serves the cluster's configuration.
*/
public class ClusterConfigHandler extends AbstractRestHandler {
private final ClusterConfigurationInfo clusterConfig;
public ClusterConfigHandler(
GatewayRetriever leaderRetriever,
Time timeout,
Map responseHeaders,
MessageHeaders messageHeaders,
Configuration configuration) {
super(leaderRetriever, timeout, responseHeaders, messageHeaders);
Preconditions.checkNotNull(configuration);
this.clusterConfig = ClusterConfigurationInfo.from(configuration);
}
@Override
protected CompletableFuture handleRequest(@Nonnull HandlerRequest request, @Nonnull RestfulGateway gateway) throws RestHandlerException {
return CompletableFuture.completedFuture(clusterConfig);
}
}