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[FLINK-28311][rest] Introduce JobManagerEnvironmentHandler
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...main/java/org/apache/flink/runtime/rest/handler/cluster/JobManagerEnvironmentHandler.java
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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 | ||
| * | ||
| * https://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.rest.handler.cluster; | ||
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| import org.apache.flink.api.common.time.Time; | ||
| 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.EmptyMessageParameters; | ||
| import org.apache.flink.runtime.rest.messages.EmptyRequestBody; | ||
| import org.apache.flink.runtime.rest.messages.EnvironmentInfo; | ||
| import org.apache.flink.runtime.rest.messages.MessageHeaders; | ||
| import org.apache.flink.runtime.webmonitor.RestfulGateway; | ||
| import org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever; | ||
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| import javax.annotation.Nonnull; | ||
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| import java.util.Map; | ||
| import java.util.concurrent.CompletableFuture; | ||
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| /** Handler which serves the jobmanager's environment variables. */ | ||
| public class JobManagerEnvironmentHandler | ||
| extends AbstractRestHandler< | ||
| RestfulGateway, EmptyRequestBody, EnvironmentInfo, EmptyMessageParameters> { | ||
| private final EnvironmentInfo environmentInfo; | ||
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| public JobManagerEnvironmentHandler( | ||
| GatewayRetriever<? extends RestfulGateway> leaderRetriever, | ||
| Time timeout, | ||
| Map<String, String> responseHeaders, | ||
| MessageHeaders<EmptyRequestBody, EnvironmentInfo, EmptyMessageParameters> | ||
| messageHeaders) { | ||
| super(leaderRetriever, timeout, responseHeaders, messageHeaders); | ||
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| this.environmentInfo = EnvironmentInfo.create(); | ||
| } | ||
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| @Override | ||
| protected CompletableFuture<EnvironmentInfo> handleRequest( | ||
| @Nonnull HandlerRequest<EmptyRequestBody> request, @Nonnull RestfulGateway gateway) | ||
| throws RestHandlerException { | ||
| return CompletableFuture.completedFuture(environmentInfo); | ||
| } | ||
| } |
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