| /** |
| * 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.consumer |
| |
| import java.util.concurrent._ |
| import java.util.concurrent.atomic._ |
| import kafka.message._ |
| import kafka.cluster._ |
| import kafka.utils.Logging |
| import kafka.common.ErrorMapping |
| |
| private[consumer] class PartitionTopicInfo(val topic: String, |
| val brokerId: Int, |
| val partition: Partition, |
| private val chunkQueue: BlockingQueue[FetchedDataChunk], |
| private val consumedOffset: AtomicLong, |
| private val fetchedOffset: AtomicLong, |
| private val fetchSize: AtomicInteger) extends Logging { |
| |
| debug("initial consumer offset of " + this + " is " + consumedOffset.get) |
| debug("initial fetch offset of " + this + " is " + fetchedOffset.get) |
| |
| def getConsumeOffset() = consumedOffset.get |
| |
| def getFetchOffset() = fetchedOffset.get |
| |
| def resetConsumeOffset(newConsumeOffset: Long) = { |
| consumedOffset.set(newConsumeOffset) |
| debug("reset consume offset of " + this + " to " + newConsumeOffset) |
| } |
| |
| def resetFetchOffset(newFetchOffset: Long) = { |
| fetchedOffset.set(newFetchOffset) |
| debug("reset fetch offset of ( %s ) to %d".format(this, newFetchOffset)) |
| } |
| |
| /** |
| * Enqueue a message set for processing |
| * @return the number of valid bytes |
| */ |
| def enqueue(messages: ByteBufferMessageSet, fetchOffset: Long): Long = { |
| val size = messages.validBytes |
| if(size > 0) { |
| // update fetched offset to the compressed data chunk size, not the decompressed message set size |
| trace("Updating fetch offset = " + fetchedOffset.get + " with size = " + size) |
| chunkQueue.put(new FetchedDataChunk(messages, this, fetchOffset)) |
| val newOffset = fetchedOffset.addAndGet(size) |
| debug("updated fetch offset of ( %s ) to %d".format(this, newOffset)) |
| ConsumerTopicStat.getConsumerTopicStat(topic).recordBytesPerTopic(size) |
| ConsumerTopicStat.getConsumerAllTopicStat().recordBytesPerTopic(size) |
| } |
| size |
| } |
| |
| /** |
| * add an empty message with the exception to the queue so that client can see the error |
| */ |
| def enqueueError(e: Throwable, fetchOffset: Long) = { |
| val messages = new ByteBufferMessageSet(buffer = ErrorMapping.EmptyByteBuffer, initialOffset = 0, |
| errorCode = ErrorMapping.codeFor(e.getClass.asInstanceOf[Class[Throwable]])) |
| chunkQueue.put(new FetchedDataChunk(messages, this, fetchOffset)) |
| } |
| |
| override def toString(): String = topic + ":" + partition.toString + ": fetched offset = " + fetchedOffset.get + |
| ": consumed offset = " + consumedOffset.get |
| } |