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/**
* 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 "OutputStream.hh"
#include "Utils.hh"
#include "orc/Exceptions.hh"
#include <sstream>
namespace orc {
PositionRecorder::~PositionRecorder() {
// PASS
}
BufferedOutputStream::BufferedOutputStream(MemoryPool& pool, OutputStream* outStream,
uint64_t capacity, uint64_t blockSize,
WriterMetrics* metrics)
: outputStream_(outStream), blockSize_(blockSize), metrics_(metrics) {
dataBuffer_.reset(new BlockBuffer(pool, blockSize_));
dataBuffer_->reserve(capacity);
}
BufferedOutputStream::~BufferedOutputStream() {
// PASS
}
bool BufferedOutputStream::Next(void** buffer, int* size) {
auto block = dataBuffer_->getNextBlock();
if (block.data == nullptr) {
throw std::logic_error("Failed to get next buffer from block buffer.");
}
*buffer = block.data;
*size = static_cast<int>(block.size);
return true;
}
void BufferedOutputStream::BackUp(int count) {
if (count >= 0) {
uint64_t unsignedCount = static_cast<uint64_t>(count);
if (unsignedCount <= dataBuffer_->size()) {
dataBuffer_->resize(dataBuffer_->size() - unsignedCount);
} else {
throw std::logic_error("Can't backup that much!");
}
}
}
void BufferedOutputStream::finishStream() {
// PASS
}
int64_t BufferedOutputStream::ByteCount() const {
return static_cast<google::protobuf::int64>(dataBuffer_->size());
}
bool BufferedOutputStream::WriteAliasedRaw(const void*, int) {
throw NotImplementedYet("WriteAliasedRaw is not supported.");
}
bool BufferedOutputStream::AllowsAliasing() const {
return false;
}
std::string BufferedOutputStream::getName() const {
std::ostringstream result;
result << "BufferedOutputStream " << dataBuffer_->size() << " of " << dataBuffer_->capacity();
return result.str();
}
uint64_t BufferedOutputStream::getSize() const {
return dataBuffer_->size();
}
uint64_t BufferedOutputStream::flush() {
uint64_t dataSize = dataBuffer_->size();
// flush data buffer into outputStream
if (dataSize > 0) {
SCOPED_STOPWATCH(metrics_, IOBlockingLatencyUs, IOCount);
dataBuffer_->writeTo(outputStream_, metrics_);
}
dataBuffer_->resize(0);
return dataSize;
}
void BufferedOutputStream::suppress() {
dataBuffer_->resize(0);
}
uint64_t BufferedOutputStream::getRawInputBufferSize() const {
throw std::logic_error("getRawInputBufferSize is not supported.");
}
void AppendOnlyBufferedStream::write(const char* data, size_t size) {
size_t dataOffset = 0;
while (size > 0) {
if (bufferOffset_ == bufferLength_) {
if (!outStream_->Next(reinterpret_cast<void**>(&buffer_), &bufferLength_)) {
throw std::logic_error("Failed to allocate buffer.");
}
bufferOffset_ = 0;
}
size_t len = std::min(static_cast<size_t>(bufferLength_ - bufferOffset_), size);
memcpy(buffer_ + bufferOffset_, data + dataOffset, len);
bufferOffset_ += static_cast<int>(len);
dataOffset += len;
size -= len;
}
}
uint64_t AppendOnlyBufferedStream::getSize() const {
return outStream_->getSize();
}
uint64_t AppendOnlyBufferedStream::flush() {
finishStream();
return outStream_->flush();
}
void AppendOnlyBufferedStream::recordPosition(PositionRecorder* recorder) const {
uint64_t flushedSize = outStream_->getSize();
uint64_t unusedBufferSize = static_cast<uint64_t>(bufferLength_ - bufferOffset_);
if (outStream_->isCompressed()) {
// start of the compression chunk in the stream
recorder->add(flushedSize);
// There are multiple blocks in the input buffer, but bufferPosition only records the
// effective length of the last block. We need rawInputBufferSize to record the total length
// of all variable blocks.
recorder->add(outStream_->getRawInputBufferSize() - unusedBufferSize);
} else {
// byte offset of the start location
recorder->add(flushedSize - unusedBufferSize);
}
}
void AppendOnlyBufferedStream::finishStream() {
outStream_->BackUp(bufferLength_ - bufferOffset_);
outStream_->finishStream();
bufferOffset_ = bufferLength_ = 0;
buffer_ = nullptr;
}
} // namespace orc
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