/* * 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.webmonitor.handlers; 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.EmptyRequestBody; import org.apache.flink.runtime.rest.messages.EmptyResponseBody; 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.shaded.netty4.io.netty.handler.codec.http.HttpResponseStatus; import javax.annotation.Nonnull; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.util.Map; import java.util.concurrent.CompletableFuture; import java.util.concurrent.CompletionException; import java.util.concurrent.Executor; import static java.util.Objects.requireNonNull; /** * Handles requests for deletion of jars. */ public class JarDeleteHandler extends AbstractRestHandler<RestfulGateway, EmptyRequestBody, EmptyResponseBody, JarDeleteMessageParameters> { private final Path jarDir; private final Executor executor; public JarDeleteHandler( final GatewayRetriever<? extends RestfulGateway> leaderRetriever, final Time timeout, final Map<String, String> responseHeaders, final MessageHeaders<EmptyRequestBody, EmptyResponseBody, JarDeleteMessageParameters> messageHeaders, final Path jarDir, final Executor executor) { super(leaderRetriever, timeout, responseHeaders, messageHeaders); this.jarDir = requireNonNull(jarDir); this.executor = requireNonNull(executor); } @Override protected CompletableFuture<EmptyResponseBody> handleRequest( @Nonnull final HandlerRequest<EmptyRequestBody, JarDeleteMessageParameters> request, @Nonnull final RestfulGateway gateway) throws RestHandlerException { final String jarId = request.getPathParameter(JarIdPathParameter.class); return CompletableFuture.supplyAsync(() -> { final Path jarToDelete = jarDir.resolve(jarId); if (!Files.exists(jarToDelete)) { throw new CompletionException(new RestHandlerException( String.format("File %s does not exist in %s.", jarId, jarDir), HttpResponseStatus.BAD_REQUEST)); } else { try { Files.delete(jarToDelete); return EmptyResponseBody.getInstance(); } catch (final IOException e) { throw new CompletionException(new RestHandlerException( String.format("Failed to delete jar %s.", jarToDelete), HttpResponseStatus.INTERNAL_SERVER_ERROR, e)); } } }, executor); } }