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Java example source code file (StompSubframeAggregator.java)
The StompSubframeAggregator.java Java example source code/* * Copyright 2014 The Netty Project * * The Netty Project 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 io.netty.handler.codec.stomp; import io.netty.buffer.ByteBuf; import io.netty.channel.ChannelHandler; import io.netty.channel.ChannelPipeline; import io.netty.handler.codec.MessageAggregator; import io.netty.handler.codec.TooLongFrameException; /** * A {@link ChannelHandler} that aggregates an {@link StompHeadersSubframe} * and its following {@link StompContentSubframe}s into a single {@link StompFrame}. * It is useful when you don't want to take care of STOMP frames whose content is 'chunked'. Insert this * handler after {@link StompSubframeDecoder} in the {@link ChannelPipeline}: */ public class StompSubframeAggregator extends MessageAggregator<StompSubframe, StompHeadersSubframe, StompContentSubframe, StompFrame> { /** * Creates a new instance. * * @param maxContentLength * the maximum length of the aggregated content. * If the length of the aggregated content exceeds this value, * a {@link TooLongFrameException} will be raised. */ public StompSubframeAggregator(int maxContentLength) { super(maxContentLength); } @Override protected boolean isStartMessage(StompSubframe msg) throws Exception { return msg instanceof StompHeadersSubframe; } @Override protected boolean isContentMessage(StompSubframe msg) throws Exception { return msg instanceof StompContentSubframe; } @Override protected boolean isLastContentMessage(StompContentSubframe msg) throws Exception { return msg instanceof LastStompContentSubframe; } @Override protected boolean isAggregated(StompSubframe msg) throws Exception { return msg instanceof StompFrame; } @Override protected boolean isContentLengthInvalid(StompHeadersSubframe start, int maxContentLength) { return (int) Math.min(Integer.MAX_VALUE, start.headers().getLong(StompHeaders.CONTENT_LENGTH, -1)) > maxContentLength; } @Override protected Object newContinueResponse(StompHeadersSubframe start, int maxContentLength, ChannelPipeline pipeline) { return null; } @Override protected boolean closeAfterContinueResponse(Object msg) throws Exception { throw new UnsupportedOperationException(); } @Override protected boolean ignoreContentAfterContinueResponse(Object msg) throws Exception { throw new UnsupportedOperationException(); } @Override protected StompFrame beginAggregation(StompHeadersSubframe start, ByteBuf content) throws Exception { StompFrame ret = new DefaultStompFrame(start.command(), content); ret.headers().set(start.headers()); return ret; } } Other Java examples (source code examples)Here is a short list of links related to this Java StompSubframeAggregator.java source code file: |
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