498 lines
18 KiB
C++
498 lines
18 KiB
C++
/* Copyright (c) 2018, 2021, Alibaba and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL/PolarDB-X Engine hereby grant you an
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additional permission to link the program and your derivative works with the
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separately licensed software that they have included with
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MySQL/PolarDB-X Engine.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef PLUGIN_X_PROTOCOL_ENCODERS_ENCODING_XPROTOCOL_H_
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#define PLUGIN_X_PROTOCOL_ENCODERS_ENCODING_XPROTOCOL_H_
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#include <google/protobuf/wire_format_lite.h>
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#include <cassert>
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#include <cstdint>
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#include <string>
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#include "my_dbug.h"
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#include "plugin/x/ngs/include/ngs/galaxy_protocol.h"
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#include "plugin/x/ngs/include/ngs/galaxy_session.h"
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#include "plugin/x/src/xpl_log.h"
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#include "plugin/x/protocol/encoders/encoding_protobuf.h"
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namespace protocol {
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#define GALAXY_XMESSAGE_DEBUG 0
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namespace tags {
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enum Raw_payload_ids {
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COMPRESSION_SINGLE = 19,
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COMPRESSION_MULTIPLE = 20,
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COMPRESSION_GROUP = 21,
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};
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} // namespace tags
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enum class Compression_type { k_single, k_multiple, k_group };
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class Compression_buffer_interface {
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public:
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virtual ~Compression_buffer_interface() = default;
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virtual void reset_counters() = 0;
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virtual bool process(Encoding_buffer *output_buffer,
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const Encoding_buffer *input_buffer) = 0;
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virtual void get_processed_data(uint32_t *out_uncompressed,
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uint32_t *out_compressed) = 0;
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};
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/**
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This class is wraps protobuf payload with X Protocol header
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This class generates X Protocol headers for protobuf messages
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and for compressed messages.
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Additionally it supplies sub-field protobuf functionality,
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because similar mechanism was used for generation for protobuf
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fields and X headers.
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*/
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class GProtocol_encoder : public Protobuf_encoder {
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private:
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/** Galaxy X-protocol */
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static gx::GHeader gheader;
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gx::GHeader *m_hdr = &gheader;
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constexpr static uint32_t k_xmessage_header_length = 5 + gx::GREQUEST_SIZE;
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enum class Header_configuration { k_full, k_size_only, k_none };
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Header_configuration m_header_configuration = Header_configuration::k_full;
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uint32_t m_header_size = header_size(m_header_configuration, m_hdr->ptype);
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void set_header_config(const Header_configuration config) {
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m_header_configuration = config;
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m_header_size = header_size(m_header_configuration, m_hdr->ptype);
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}
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static uint32_t header_size(const Header_configuration config,
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gx::Protocol_type ptype) {
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switch (config) {
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case Header_configuration::k_full:
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return 5 + gx::header_size(ptype);
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case Header_configuration::k_none:
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return 0;
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case Header_configuration::k_size_only:
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return 4 + gx::header_size(ptype);
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default:
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assert(false && "Not allowed value");
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return 0;
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}
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}
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public:
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explicit GProtocol_encoder(Encoding_buffer *buffer, gx::GHeader *hdr)
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: Protobuf_encoder(buffer), m_hdr(hdr) {
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ensure_buffer_size<1>();
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set_header_config(m_header_configuration);
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}
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explicit GProtocol_encoder(Encoding_buffer *buffer)
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: Protobuf_encoder(buffer), m_hdr() {
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ensure_buffer_size<1>();
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set_header_config(m_header_configuration);
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}
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void rebuild_header() { set_header_config(m_header_configuration); }
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#if GALAXY_XMESSAGE_DEBUG
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static uint32_t crc32(const void *data, size_t size,
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uint32_t crc = 0xffffffff) {
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static const uint32_t table[] = {
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
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0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
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0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
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0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
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0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
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0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
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0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
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0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
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0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
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0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
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0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
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0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
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0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
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0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
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0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
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0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
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0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
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0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
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0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
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0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
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0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
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0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
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0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
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0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
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0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
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0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
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0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
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0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
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0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
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0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
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0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
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0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
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0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
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};
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crc ^= 0xffffffff; // Restore last state.
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auto ptr = reinterpret_cast<const uint8_t *>(data);
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for (size_t i = 0; i < size; ++i)
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crc = table[(crc ^ ptr[i]) & 0xffu] ^ (crc >> 8u);
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crc = crc ^ 0xffffffff;
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return crc;
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}
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#endif
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struct Position {
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Page *m_page;
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uint8_t *m_position;
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uint8_t *get_position() const { return m_position; }
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uint32_t bytes_until_page(Page *current_page) const {
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uint32_t size = m_page->m_current_data - m_position;
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if (current_page == m_page) {
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return size;
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}
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Page *i = m_page->m_next_page;
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for (;;) {
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assert(nullptr != i);
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size += i->get_used_bytes();
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if (i == current_page) {
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assert(nullptr == i->m_next_page);
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break;
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}
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i = i->m_next_page;
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}
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return size;
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}
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#if GALAXY_XMESSAGE_DEBUG
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uint32 crc32_until_page(Page *current_page) const {
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// Init to 0.
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auto crc = crc32(m_position, m_page->m_current_data - m_position, 0);
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if (current_page == m_page) {
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return crc;
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}
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Page *i = m_page->m_next_page;
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for (;;) {
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assert(nullptr != i);
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crc = crc32(i->m_begin_data, i->get_used_bytes(), crc);
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if (i == current_page) {
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assert(nullptr == i->m_next_page);
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break;
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}
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i = i->m_next_page;
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}
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return crc;
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}
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#endif
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};
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template <uint32_t delimiter_length>
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struct Field_delimiter : Position {};
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struct Compression_position : Position {
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Encoding_buffer *m_compressed_buffer;
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Compression_type m_compression_type;
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uint32_t m_compressed_data_size;
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uint32_t m_uncompressed_data_size;
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uint8_t m_msg_id;
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};
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template <uint32_t id>
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void empty_xmessage() {
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ensure_buffer_size<k_xmessage_header_length>();
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if (Header_configuration::k_full == m_header_configuration) {
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DBUG_LOG("debug", "empty_msg_full_header");
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/** Galaxy X-protocol */
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if (m_hdr->is_galaxy()) {
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primitives::base::Fixint_length<8>::encode_value(m_page->m_current_data,
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m_hdr->sid);
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primitives::base::Fixint_length<1>::encode_value(m_page->m_current_data,
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m_hdr->version);
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}
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primitives::base::Fixint_length<4>::encode<1>(m_page->m_current_data);
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primitives::base::Fixint_length<1>::encode<id>(m_page->m_current_data);
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#if GALAXY_XMESSAGE_DEBUG
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auto start = m_page->m_current_data;
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LogPluginErrMsg(WARNING_LEVEL, ER_XPLUGIN_ERROR_MSG,
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"GP: msg type:%u sid:%lu len:%u crc:%u", id, m_hdr->sid,
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1, crc32(start, m_page->m_current_data - start, 0));
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#endif
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} else if (Header_configuration::k_size_only == m_header_configuration) {
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DBUG_LOG("debug", "empty_msg_size_only");
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/** Galaxy X-protocol */
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if (m_hdr->is_galaxy()) {
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primitives::base::Fixint_length<8>::encode_value(m_page->m_current_data,
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m_hdr->sid);
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primitives::base::Fixint_length<1>::encode_value(m_page->m_current_data,
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m_hdr->version);
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}
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primitives::base::Fixint_length<4>::encode<0>(m_page->m_current_data);
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}
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}
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Compression_position begin_compression(const uint8_t msg_id,
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const Compression_type type,
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Encoding_buffer *to_compress) {
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Compression_position result;
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DBUG_ASSERT(!m_hdr->is_galaxy());
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switch (type) {
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case Compression_type::k_single:
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begin_xmessage<tags::Raw_payload_ids::COMPRESSION_SINGLE, 100>(&result);
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set_header_config(Header_configuration::k_none);
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m_buffer->m_current->m_current_data += 5;
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break;
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case Compression_type::k_multiple:
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begin_xmessage<tags::Raw_payload_ids::COMPRESSION_MULTIPLE, 100>(
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&result);
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set_header_config(Header_configuration::k_size_only);
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m_buffer->m_current->m_current_data += 5;
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break;
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case Compression_type::k_group:
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begin_xmessage<tags::Raw_payload_ids::COMPRESSION_GROUP, 100>(&result);
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set_header_config(Header_configuration::k_full);
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m_buffer->m_current->m_current_data += 4;
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break;
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}
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DBUG_ASSERT(to_compress->m_current == to_compress->m_front);
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DBUG_ASSERT(to_compress->m_current->m_begin_data ==
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to_compress->m_current->m_current_data);
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result.m_compressed_buffer = m_buffer;
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result.m_compression_type = type;
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result.m_msg_id = msg_id;
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// Reset buffer, and initialize the 'handy' data hold inside
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// 'Encoder_primitives'
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buffer_set(to_compress);
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return result;
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}
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bool end_compression(const Compression_position &position,
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Compression_buffer_interface *compress) {
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Position before_compression{m_buffer->m_front,
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m_buffer->m_front->m_begin_data};
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const auto before_compression_size =
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before_compression.bytes_until_page(m_page);
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if (!compress->process(position.m_compressed_buffer, m_buffer))
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return false;
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auto ptr = position.m_position;
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const auto message_size =
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position.bytes_until_page(position.m_compressed_buffer->m_current);
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switch (position.m_compression_type) {
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case Compression_type::k_single:
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primitives::base::Fixint_length<4>::encode_value(ptr, message_size - 4);
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primitives::base::Fixint_length<1>::encode_value(
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ptr, tags::Raw_payload_ids::COMPRESSION_SINGLE);
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primitives::base::Fixint_length<1>::encode_value(ptr,
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position.m_msg_id);
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primitives::base::Fixint_length<4>::encode_value(
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ptr, before_compression_size);
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break;
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case Compression_type::k_multiple:
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primitives::base::Fixint_length<4>::encode_value(ptr, message_size - 4);
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primitives::base::Fixint_length<1>::encode_value(
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ptr, tags::Raw_payload_ids::COMPRESSION_MULTIPLE);
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primitives::base::Fixint_length<1>::encode_value(ptr,
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position.m_msg_id);
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primitives::base::Fixint_length<4>::encode_value(
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ptr, before_compression_size);
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break;
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case Compression_type::k_group:
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primitives::base::Fixint_length<4>::encode_value(ptr, message_size - 4);
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primitives::base::Fixint_length<1>::encode_value(
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ptr, tags::Raw_payload_ids::COMPRESSION_GROUP);
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primitives::base::Fixint_length<4>::encode_value(
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ptr, before_compression_size);
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break;
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}
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// Lets discard data inside new/compression buffer
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// in case when 'compress' call didn't do that.
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m_buffer->reset();
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// and now we restore original buffer
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buffer_set(position.m_compressed_buffer);
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set_header_config(Header_configuration::k_full);
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return true;
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}
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template <uint32_t id, uint32_t needed_buffer_size>
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Position begin_xmessage() {
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Position result;
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begin_xmessage<id, needed_buffer_size>(&result);
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return result;
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}
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template <uint32_t needed_buffer_size>
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Position begin_xmessage(const uint32_t id) {
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Position result;
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ensure_buffer_size<needed_buffer_size + k_xmessage_header_length>();
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auto xmsg_start = m_page->m_current_data;
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if (Header_configuration::k_full == m_header_configuration) {
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if (m_hdr->is_galaxy()) {
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auto xmsg_hdr = xmsg_start;
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primitives::base::Fixint_length<8>::encode_value(xmsg_hdr, m_hdr->sid);
|
|
primitives::base::Fixint_length<1>::encode_value(xmsg_hdr,
|
|
m_hdr->version);
|
|
}
|
|
auto xmsg_type = xmsg_start + 4 + m_hdr->size();
|
|
primitives::base::Fixint_length<1>::encode_value(xmsg_type, id);
|
|
}
|
|
result.m_page = m_page;
|
|
result.m_position = xmsg_start;
|
|
|
|
m_page->m_current_data += m_header_size;
|
|
|
|
return result;
|
|
}
|
|
|
|
template <uint32_t id, uint32_t needed_buffer_size>
|
|
void begin_xmessage(Position *position) {
|
|
ensure_buffer_size<needed_buffer_size + k_xmessage_header_length>();
|
|
|
|
auto xmsg_start = m_page->m_current_data;
|
|
if (Header_configuration::k_full == m_header_configuration) {
|
|
if (m_hdr->is_galaxy()) {
|
|
auto xmsg_hdr = xmsg_start;
|
|
primitives::base::Fixint_length<8>::encode_value(xmsg_hdr, m_hdr->sid);
|
|
primitives::base::Fixint_length<1>::encode_value(xmsg_hdr,
|
|
m_hdr->version);
|
|
}
|
|
auto xmsg_type = xmsg_start + 4 + m_hdr->size();
|
|
primitives::base::Fixint_length<1>::encode<id>(xmsg_type);
|
|
}
|
|
position->m_page = m_page;
|
|
position->m_position = xmsg_start;
|
|
|
|
m_page->m_current_data += m_header_size;
|
|
}
|
|
|
|
void end_xmessage(const Position &position) {
|
|
auto ptr = position.get_position() + m_hdr->size();
|
|
|
|
if (Header_configuration::k_none != m_header_configuration) {
|
|
primitives::base::Fixint_length<4>::encode_value(
|
|
ptr, position.bytes_until_page(m_page) - 4 - m_hdr->size());
|
|
#if GALAXY_XMESSAGE_DEBUG
|
|
LogPluginErrMsg(WARNING_LEVEL, ER_XPLUGIN_ERROR_MSG,
|
|
"GP: msg type:%u sid:%lu len:%u crc:%u",
|
|
*(uint8_t *)(position.get_position() + 13),
|
|
*(uint64_t *)position.get_position(),
|
|
*(uint32_t *)(position.get_position() + 9),
|
|
position.crc32_until_page(m_page));
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void abort_xmessage(const Position &position) {
|
|
auto page = position.m_page->m_next_page;
|
|
|
|
m_buffer->remove_page_list(page);
|
|
|
|
m_page = position.m_page;
|
|
m_page->m_current_data = position.m_position;
|
|
}
|
|
|
|
void abort_compression(const Compression_position &position) {
|
|
// Lets discard data inside new/compression buffer
|
|
// in case when 'compress' call didn't do that.
|
|
m_buffer->reset();
|
|
|
|
// and now we restore original buffer
|
|
buffer_set(position.m_compressed_buffer);
|
|
|
|
set_header_config(Header_configuration::k_full);
|
|
|
|
abort_xmessage(position);
|
|
}
|
|
|
|
template <uint32_t id, uint32_t delimiter_length = 1>
|
|
Field_delimiter<delimiter_length> begin_delimited_field() {
|
|
Field_delimiter<delimiter_length> result;
|
|
|
|
begin_delimited_field<id>(&result);
|
|
|
|
return result;
|
|
}
|
|
|
|
template <uint32_t id, uint32_t delimiter_length = 1>
|
|
void begin_delimited_field(Field_delimiter<delimiter_length> *position) {
|
|
encode_field_delimited_header<id>();
|
|
position->m_position = m_page->m_current_data;
|
|
position->m_page = m_page;
|
|
|
|
m_page->m_current_data += delimiter_length;
|
|
}
|
|
|
|
template <uint32_t delimiter_length>
|
|
void end_delimited_field(const Field_delimiter<delimiter_length> &position) {
|
|
auto ptr = position.get_position();
|
|
primitives::base::Varint_length<delimiter_length>::encode(
|
|
ptr, position.bytes_until_page(m_page) - delimiter_length);
|
|
}
|
|
};
|
|
|
|
} // namespace protocol
|
|
|
|
#endif // PLUGIN_X_PROTOCOL_ENCODERS_ENCODING_XPROTOCOL_H_
|