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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 "StripeStream.hh"
#include "RLE.hh"
#include "Reader.hh"
#include "io/Cache.hh"
#include "orc/Exceptions.hh"
#include "wrap/coded-stream-wrapper.h"
namespace orc {
StripeStreamsImpl::StripeStreamsImpl(const RowReaderImpl& reader, uint64_t index,
const proto::StripeInformation& stripeInfo,
const proto::StripeFooter& footer, uint64_t stripeStart,
InputStream& input, const Timezone& writerTimezone,
const Timezone& readerTimezone)
: reader_(reader),
stripeInfo_(stripeInfo),
footer_(footer),
stripeIndex_(index),
stripeStart_(stripeStart),
input_(input),
writerTimezone_(writerTimezone),
readerTimezone_(readerTimezone),
readCache_(reader.getReadCache()) {
// PASS
}
StripeStreamsImpl::~StripeStreamsImpl() {
// PASS
}
StreamInformation::~StreamInformation() {
// PASS
}
StripeInformation::~StripeInformation() {
// PASS
}
StreamInformationImpl::~StreamInformationImpl() {
// PASS
}
const std::vector<bool> StripeStreamsImpl::getSelectedColumns() const {
return reader_.getSelectedColumns();
}
proto::ColumnEncoding StripeStreamsImpl::getEncoding(uint64_t columnId) const {
return footer_.columns(static_cast<int>(columnId));
}
const Timezone& StripeStreamsImpl::getWriterTimezone() const {
return writerTimezone_;
}
const Timezone& StripeStreamsImpl::getReaderTimezone() const {
return readerTimezone_;
}
std::ostream* StripeStreamsImpl::getErrorStream() const {
return reader_.getFileContents().errorStream;
}
std::unique_ptr<SeekableInputStream> StripeStreamsImpl::getStream(uint64_t columnId,
proto::Stream_Kind kind,
bool shouldStream) const {
uint64_t offset = stripeStart_;
uint64_t dataEnd =
stripeInfo_.offset() + stripeInfo_.index_length() + stripeInfo_.data_length();
MemoryPool* pool = reader_.getFileContents().pool;
for (int i = 0; i < footer_.streams_size(); ++i) {
const proto::Stream& stream = footer_.streams(i);
if (stream.has_kind() && stream.kind() == kind &&
stream.column() == static_cast<uint64_t>(columnId)) {
uint64_t streamLength = stream.length();
if (offset + streamLength > dataEnd) {
std::stringstream msg;
msg << "Malformed stream meta at stream index " << i << " in stripe " << stripeIndex_
<< ": streamOffset=" << offset << ", streamLength=" << streamLength
<< ", stripeOffset=" << stripeInfo_.offset()
<< ", stripeIndexLength=" << stripeInfo_.index_length()
<< ", stripeDataLength=" << stripeInfo_.data_length();
throw ParseError(msg.str());
}
BufferSlice slice;
if (readCache_) {
ReadRange range{offset, streamLength};
slice = readCache_->read(range);
}
uint64_t myBlock = shouldStream ? input_.getNaturalReadSize() : streamLength;
std::unique_ptr<SeekableInputStream> seekableInput;
if (slice.buffer) {
seekableInput = std::make_unique<SeekableArrayInputStream>(
slice.buffer->data() + slice.offset, slice.length);
} else {
seekableInput = std::make_unique<SeekableFileInputStream>(&input_, offset, streamLength,
*pool, myBlock);
}
return createDecompressor(reader_.getCompression(), std::move(seekableInput),
reader_.getCompressionSize(), *pool,
reader_.getFileContents().readerMetrics);
}
offset += stream.length();
}
return nullptr;
}
MemoryPool& StripeStreamsImpl::getMemoryPool() const {
return *reader_.getFileContents().pool;
}
ReaderMetrics* StripeStreamsImpl::getReaderMetrics() const {
return reader_.getFileContents().readerMetrics;
}
bool StripeStreamsImpl::getThrowOnHive11DecimalOverflow() const {
return reader_.getThrowOnHive11DecimalOverflow();
}
bool StripeStreamsImpl::isDecimalAsLong() const {
return reader_.getIsDecimalAsLong();
}
int32_t StripeStreamsImpl::getForcedScaleOnHive11Decimal() const {
return reader_.getForcedScaleOnHive11Decimal();
}
const SchemaEvolution* StripeStreamsImpl::getSchemaEvolution() const {
return reader_.getSchemaEvolution();
}
void StripeInformationImpl::ensureStripeFooterLoaded() const {
if (stripeFooter_.get() == nullptr) {
std::unique_ptr<SeekableInputStream> pbStream = createDecompressor(
compression_,
std::make_unique<SeekableFileInputStream>(stream_, offset_ + indexLength_ + dataLength_,
footerLength_, memory_),
blockSize_, memory_, metrics_);
stripeFooter_ = std::make_unique<proto::StripeFooter>();
if (!stripeFooter_->ParseFromZeroCopyStream(pbStream.get())) {
throw ParseError("Failed to parse the stripe footer");
}
}
}
std::unique_ptr<StreamInformation> StripeInformationImpl::getStreamInformation(
uint64_t streamId) const {
ensureStripeFooterLoaded();
uint64_t streamOffset = offset_;
for (uint64_t s = 0; s < streamId; ++s) {
streamOffset += stripeFooter_->streams(static_cast<int>(s)).length();
}
return std::make_unique<StreamInformationImpl>(
streamOffset, stripeFooter_->streams(static_cast<int>(streamId)));
}
} // namespace orc
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