/* * 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; import org.apache.flink.configuration.RestOptions; import org.apache.flink.runtime.rest.handler.util.HandlerUtils; import org.apache.flink.runtime.rest.messages.ErrorResponseBody; import org.apache.flink.shaded.netty4.io.netty.channel.ChannelHandlerContext; import org.apache.flink.shaded.netty4.io.netty.handler.codec.TooLongFrameException; import org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpObject; import org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpResponseStatus; import javax.annotation.Nonnull; import java.util.List; import java.util.Map; /** * Same as {@link org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpObjectDecoder} * but returns HTTP 413 to the client if the payload exceeds {@link #maxContentLength}. */ public class FlinkHttpObjectAggregator extends org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpObjectAggregator { private final Map<String, String> responseHeaders; public FlinkHttpObjectAggregator(final int maxContentLength, @Nonnull final Map<String, String> responseHeaders) { super(maxContentLength); this.responseHeaders = responseHeaders; } @Override protected void decode( final ChannelHandlerContext ctx, final HttpObject msg, final List<Object> out) throws Exception { try { super.decode(ctx, msg, out); } catch (final TooLongFrameException e) { HandlerUtils.sendErrorResponse( ctx, false, new ErrorResponseBody(String.format( e.getMessage() + " Try to raise [%s]", RestOptions.SERVER_MAX_CONTENT_LENGTH.key())), HttpResponseStatus.REQUEST_ENTITY_TOO_LARGE, responseHeaders); } } }