| /** |
| * 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 kafka.network |
| |
| import java.nio._ |
| import java.nio.channels._ |
| import kafka.utils._ |
| |
| @nonthreadsafe |
| private[kafka] class BoundedByteBufferSend(val buffer: ByteBuffer) extends Send { |
| |
| private var sizeBuffer = ByteBuffer.allocate(4) |
| |
| // Avoid possibility of overflow for 2GB-4 byte buffer |
| if(buffer.remaining > Int.MaxValue - sizeBuffer.limit) |
| throw new IllegalArgumentException("Attempt to create a bounded buffer of " + buffer.remaining + " bytes, but the maximum " + |
| "allowable size for a bounded buffer is " + (Int.MaxValue - sizeBuffer.limit) + ".") |
| sizeBuffer.putInt(buffer.limit) |
| sizeBuffer.rewind() |
| |
| var complete: Boolean = false |
| |
| def this(size: Int) = this(ByteBuffer.allocate(size)) |
| |
| def this(request: Request) = { |
| this(request.sizeInBytes + 2) |
| buffer.putShort(request.id) |
| request.writeTo(buffer) |
| buffer.rewind() |
| } |
| |
| def writeTo(channel: GatheringByteChannel): Int = { |
| expectIncomplete() |
| var written = channel.write(Array(sizeBuffer, buffer)) |
| // if we are done, mark it off |
| if(!buffer.hasRemaining) |
| complete = true |
| written.asInstanceOf[Int] |
| } |
| |
| } |