| /* |
| * 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. |
| */ |
| |
| #include "lib/commons.h" |
| #include "util/StringUtil.h" |
| #include "lib/TaskCounters.h" |
| #include "MCollectorOutputHandler.h" |
| #include "lib/NativeObjectFactory.h" |
| #include "lib/MapOutputCollector.h" |
| #include "CombineHandler.h" |
| |
| using std::string; |
| using std::vector; |
| |
| namespace NativeTask { |
| |
| MCollectorOutputHandler::MCollectorOutputHandler() |
| : _collector(NULL), _dest(NULL), _endium(LARGE_ENDIUM) { |
| } |
| |
| MCollectorOutputHandler::~MCollectorOutputHandler() { |
| _dest = NULL; |
| delete _collector; |
| _collector = NULL; |
| } |
| |
| void MCollectorOutputHandler::configure(Config * config) { |
| if (NULL == config) { |
| return; |
| } |
| |
| uint32_t partition = config->getInt(MAPRED_NUM_REDUCES, 1); |
| |
| _collector = new MapOutputCollector(partition, this); |
| _collector->configure(config); |
| } |
| |
| void MCollectorOutputHandler::finish() { |
| _collector->close(); |
| BatchHandler::finish(); |
| } |
| |
| void MCollectorOutputHandler::handleInput(ByteBuffer & in) { |
| char * buff = in.current(); |
| uint32_t length = in.remain(); |
| |
| const char * end = buff + length; |
| char * pos = buff; |
| if (_kvContainer.remain() > 0) { |
| uint32_t filledLength = _kvContainer.fill(pos, length); |
| pos += filledLength; |
| } |
| |
| while (end - pos > 0) { |
| KVBufferWithParititionId * kvBuffer = (KVBufferWithParititionId *)pos; |
| |
| if (unlikely(end - pos < KVBuffer::headerLength())) { |
| THROW_EXCEPTION(IOException, "k/v meta information incomplete"); |
| } |
| |
| if (_endium == LARGE_ENDIUM) { |
| kvBuffer->partitionId = bswap(kvBuffer->partitionId); |
| kvBuffer->buffer.keyLength = bswap(kvBuffer->buffer.keyLength); |
| kvBuffer->buffer.valueLength = bswap(kvBuffer->buffer.valueLength); |
| } |
| |
| uint32_t kvLength = kvBuffer->buffer.length(); |
| |
| KVBuffer * dest = allocateKVBuffer(kvBuffer->partitionId, kvLength); |
| _kvContainer.wrap((char *)dest, kvLength); |
| |
| pos += 4; //skip the partition length |
| uint32_t filledLength = _kvContainer.fill(pos, end - pos); |
| pos += filledLength; |
| } |
| } |
| |
| KVBuffer * MCollectorOutputHandler::allocateKVBuffer(uint32_t partitionId, uint32_t kvlength) { |
| KVBuffer * dest = _collector->allocateKVBuffer(partitionId, kvlength); |
| return dest; |
| } |
| |
| } // namespace NativeTask |