| /* |
| * 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.cassandra.net; |
| |
| import java.nio.ByteBuffer; |
| |
| import io.netty.buffer.ByteBuf; |
| import io.netty.channel.ChannelHandler; |
| import org.apache.cassandra.utils.memory.BufferPool; |
| |
| import static org.apache.cassandra.net.FrameEncoderCrc.HEADER_LENGTH; |
| import static org.apache.cassandra.net.FrameEncoderCrc.writeHeader; |
| |
| /** |
| * A frame encoder that writes frames, just without any modification or payload protection. |
| * This is non-standard, and useful for systems that have a trusted transport layer that want |
| * to avoid incurring the (very low) cost of computing a CRC. |
| * |
| * Please see {@link FrameDecoderUnprotected} for description of the framing produced by this encoder. |
| */ |
| @ChannelHandler.Sharable |
| class FrameEncoderUnprotected extends FrameEncoder |
| { |
| static final FrameEncoderUnprotected instance = new FrameEncoderUnprotected(); |
| static final PayloadAllocator allocator = (isSelfContained, capacity) -> |
| new Payload(isSelfContained, capacity, HEADER_LENGTH, 0); |
| |
| public PayloadAllocator allocator() |
| { |
| return allocator; |
| } |
| |
| ByteBuf encode(boolean isSelfContained, ByteBuffer frame) |
| { |
| try |
| { |
| int frameLength = frame.remaining(); |
| int dataLength = frameLength - HEADER_LENGTH; |
| if (dataLength >= 1 << 17) |
| throw new IllegalArgumentException("Maximum uncompressed payload size is 128KiB"); |
| |
| writeHeader(frame, isSelfContained, dataLength); |
| return GlobalBufferPoolAllocator.wrap(frame); |
| } |
| catch (Throwable t) |
| { |
| bufferPool.put(frame); |
| throw t; |
| } |
| } |
| } |