125 lines
4.1 KiB
C++
125 lines
4.1 KiB
C++
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* Modified by Cloudius Systems.
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* Copyright 2015 Cloudius Systems.
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*/
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#pragma once
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#include "utils/UUID.hh"
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#include "sstables/sstables.hh"
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#include "streaming/compress/compression_info.hh"
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namespace streaming {
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namespace messages {
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/**
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* StreamingFileHeader is appended before sending actual data to describe what it's sending.
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*/
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class file_message_header {
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using UUID = utils::UUID;
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using compression_info = compress::compression_info;
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using format_types = sstables::sstable::format_types;
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public:
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UUID cf_id;
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int32_t sequence_number;
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/** SSTable version */
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sstring version;
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/** SSTable format **/
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format_types format;
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int64_t estimated_keys;
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std::map<int64_t, int64_t> sections;
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compression_info comp_info;
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int64_t repaired_at;
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int32_t sstable_level;
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file_message_header() = default;
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file_message_header(UUID cf_id_, int32_t sequence_number_, sstring version_, format_types format_,
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int64_t estimated_keys_, std::map<int64_t, int64_t> sections_,
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compression_info comp_info_, int64_t repaired_at_, int32_t sstable_level_)
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: cf_id(cf_id_)
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, sequence_number(sequence_number_)
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, version(version_)
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, format(format_)
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, estimated_keys(estimated_keys_)
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, sections(std::move(sections_))
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, comp_info(std::move(comp_info_))
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, repaired_at(repaired_at_)
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, sstable_level(sstable_level_) {
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}
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/**
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* @return total file size to transfer in bytes
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*/
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int64_t size() {
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int64_t size = 0;
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if (true /* comp_info != null */) {
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// calculate total length of transferring chunks
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// for (CompressionMetadata.Chunk chunk : comp_info.chunks)
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// size += chunk.length + 4; // 4 bytes for CRC
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} else {
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for (auto section : sections) {
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size += section.second - section.first;
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}
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}
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return size;
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}
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#if 0
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@Override
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public String toString()
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{
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final StringBuilder sb = new StringBuilder("Header (");
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sb.append("cf_id: ").append(cf_id);
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sb.append(", #").append(sequence_number);
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sb.append(", version: ").append(version);
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sb.append(", format: ").append(format);
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sb.append(", estimated keys: ").append(estimated_keys);
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sb.append(", transfer size: ").append(size());
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sb.append(", compressed?: ").append(comp_info != null);
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sb.append(", repaired_at: ").append(repaired_at);
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sb.append(", level: ").append(sstable_level);
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sb.append(')');
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return sb.toString();
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}
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@Override
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public boolean equals(Object o)
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{
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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FileMessageHeader that = (FileMessageHeader) o;
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return sequence_number == that.sequence_number && cf_id.equals(that.cf_id);
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}
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@Override
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public int hashCode()
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{
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int result = cf_id.hashCode();
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result = 31 * result + sequence_number;
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return result;
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}
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#endif
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public:
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void serialize(bytes::iterator& out) const;
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static file_message_header deserialize(bytes_view& v);
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size_t serialized_size() const;
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};
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} // namespace messages
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} // namespace streaming
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