| /* |
| * 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 "time_chunk_writer.h" |
| |
| #include "common/logger/elog.h" |
| |
| using namespace common; |
| |
| namespace storage { |
| |
| int TimeChunkWriter::init(const ColumnSchema &col_schema) { |
| return init(col_schema.column_name_, col_schema.encoding_, |
| col_schema.compression_); |
| } |
| |
| int TimeChunkWriter::init(const std::string &measurement_name, |
| TSEncoding encoding, |
| CompressionType compression_type) { |
| int ret = E_OK; |
| chunk_statistic_ = StatisticFactory::alloc_statistic(common::VECTOR); |
| if (chunk_statistic_ == nullptr) { |
| return E_OOM; |
| } else if (RET_FAIL(time_page_writer_.init(encoding, compression_type))) { |
| } else if (IS_NULL( |
| (first_page_statistic_ = |
| StatisticFactory::alloc_statistic(common::VECTOR)))) { |
| ret = E_OOM; |
| } else { |
| chunk_header_.measurement_name_ = measurement_name; |
| chunk_header_.data_type_ = common::VECTOR; |
| chunk_header_.compression_type_ = compression_type; |
| chunk_header_.encoding_type_ = encoding; |
| } |
| return ret; |
| } |
| |
| void TimeChunkWriter::reset() { |
| if (chunk_statistic_ != nullptr) { |
| chunk_statistic_->reset(); |
| } |
| if (first_page_statistic_ != nullptr) { |
| first_page_statistic_->reset(); |
| } else { |
| first_page_statistic_ = |
| StatisticFactory::alloc_statistic(common::VECTOR); |
| } |
| time_page_writer_.reset(); |
| chunk_header_.reset(); |
| chunk_data_.reset(); |
| num_of_pages_ = 0; |
| } |
| |
| void TimeChunkWriter::destroy() { |
| if (num_of_pages_ == 1) { |
| free_first_writer_data(); |
| } |
| time_page_writer_.destroy(); |
| if (chunk_statistic_ != nullptr) { |
| StatisticFactory::free(chunk_statistic_); |
| chunk_statistic_ = nullptr; |
| } |
| if (first_page_statistic_ != nullptr) { |
| StatisticFactory::free(first_page_statistic_); |
| first_page_statistic_ = nullptr; |
| } |
| chunk_data_.destroy(); |
| chunk_header_.reset(); |
| num_of_pages_ = 0; |
| } |
| |
| int TimeChunkWriter::seal_cur_page(bool end_chunk) { |
| int ret = E_OK; |
| if (RET_FAIL( |
| chunk_statistic_->merge_with(time_page_writer_.get_statistic()))) { |
| return ret; |
| } |
| if (num_of_pages_ == 0) { |
| if (end_chunk) { |
| // this page is the only one page of this chunk |
| ret = |
| time_page_writer_.write_to_chunk(chunk_data_, /*header*/ true, |
| /*stat*/ false, /*data*/ true); |
| time_page_writer_.destroy_page_data(); |
| time_page_writer_.reset(); |
| } else { |
| /* |
| * if the chunk has only one page, do not writer page statistic. |
| * so we save the data of first page and see if the chunk has more |
| * page later. |
| */ |
| ret = time_page_writer_.write_to_chunk(chunk_data_, /*header*/ true, |
| /*stat*/ false, |
| /*data*/ false); |
| if (IS_SUCC(ret)) { |
| save_first_page_data(time_page_writer_); |
| // time_page_writer_.destroy_page_data(); |
| time_page_writer_.reset(); |
| } |
| } |
| } else { |
| if (num_of_pages_ == 1) { |
| // the chunk has more than one page, writer first page now |
| if (RET_FAIL(write_first_page_data(chunk_data_))) { |
| } |
| free_first_writer_data(); |
| } |
| if (IS_SUCC(ret)) { |
| if (RET_FAIL(time_page_writer_.write_to_chunk( |
| chunk_data_, /*header*/ true, /*stat*/ true, |
| /*data*/ true))) { |
| } |
| time_page_writer_.destroy_page_data(); |
| time_page_writer_.reset(); |
| } |
| } |
| num_of_pages_++; |
| #if DEBUG_SE |
| std::cout << "seal_cur_page, num_of_pages_=" << num_of_pages_ |
| << ", end_chunk=" << end_chunk |
| << ". After seal: chunk.get_point_numer()=" |
| << chunk_statistic_->count_ |
| << ", chunk_data.size=" << chunk_data_.total_size() << std::endl; |
| #endif |
| return ret; |
| } |
| |
| void TimeChunkWriter::save_first_page_data(TimePageWriter &first_page_writer) { |
| first_page_data_ = first_page_writer.get_cur_page_data(); |
| first_page_statistic_->deep_copy_from(first_page_writer.get_statistic()); |
| } |
| |
| int TimeChunkWriter::write_first_page_data(ByteStream &pages_data, |
| bool with_statistic) { |
| int ret = E_OK; |
| if (with_statistic && |
| RET_FAIL(first_page_statistic_->serialize_to(pages_data))) { |
| } else if (RET_FAIL( |
| pages_data.write_buf(first_page_data_.compressed_buf_, |
| first_page_data_.compressed_size_))) { |
| } |
| return ret; |
| } |
| |
| int TimeChunkWriter::end_encode_chunk() { |
| int ret = E_OK; |
| if (time_page_writer_.get_statistic()->count_ > 0) { |
| ret = seal_cur_page(/*end_chunk*/ true); |
| if (E_OK == ret) { |
| chunk_header_.data_size_ = chunk_data_.total_size(); |
| chunk_header_.num_of_pages_ = num_of_pages_; |
| } |
| } else if (first_page_statistic_ != nullptr) { |
| ret = write_first_page_data(chunk_data_, false); |
| if (E_OK == ret) { |
| free_first_writer_data(); |
| chunk_header_.data_size_ = chunk_data_.total_size(); |
| chunk_header_.num_of_pages_ = num_of_pages_; |
| } |
| } |
| #if DEBUG_SE |
| std::cout << "end_encode_time_chunk: num_of_pages_=" << num_of_pages_ |
| << ", chunk_header_.data_size_=" << chunk_header_.data_size_ |
| << ", page_writer.get_statistic()->count_=" |
| << time_page_writer_.get_statistic()->count_ << std::endl; |
| #endif |
| return ret; |
| } |
| |
| int64_t TimeChunkWriter::estimate_max_series_mem_size() { |
| return chunk_data_.total_size() + |
| time_page_writer_.estimate_max_mem_size() + |
| PageHeader::estimat_max_page_header_size_without_statistics() + |
| get_typed_statistic_sizeof( |
| time_page_writer_.get_statistic()->get_type()); |
| } |
| |
| bool TimeChunkWriter::hasData() { |
| return num_of_pages_ > 0 || (time_page_writer_.get_statistic() != nullptr && |
| time_page_writer_.get_statistic()->count_ > 0); |
| } |
| |
| } // end namespace storage |
