mirror of
https://github.com/ClickHouse/ClickHouse.git
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154 lines
3.3 KiB
C++
154 lines
3.3 KiB
C++
#include <zkutil/Types.h>
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#include <DB/Storages/MergeTree/ReplicatedMergeTreeLogEntry.h>
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#include <DB/IO/Operators.h>
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#include <DB/IO/ReadBufferFromString.h>
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namespace DB
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{
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void ReplicatedMergeTreeLogEntryData::writeText(WriteBuffer & out) const
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{
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out << "format version: 3\n"
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<< "create_time: " << LocalDateTime(create_time ? create_time : time(0)) << "\n"
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<< "source replica: " << source_replica << '\n'
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<< "block_id: " << escape << block_id << '\n';
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switch (type)
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{
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case GET_PART:
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out << "get\n" << new_part_name;
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break;
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case MERGE_PARTS:
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out << "merge\n";
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for (const String & s : parts_to_merge)
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out << s << '\n';
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out << "into\n" << new_part_name;
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break;
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case DROP_RANGE:
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if (detach)
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out << "detach\n";
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else
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out << "drop\n";
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out << new_part_name;
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break;
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case ATTACH_PART:
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out << "attach\n";
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if (attach_unreplicated)
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out << "unreplicated\n";
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else
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out << "detached\n";
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out << source_part_name << "\ninto\n" << new_part_name;
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break;
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default:
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throw Exception("Unknown log entry type: " + DB::toString(type), ErrorCodes::LOGICAL_ERROR);
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}
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out << '\n';
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if (quorum)
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out << "quorum: " << quorum << '\n';
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}
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void ReplicatedMergeTreeLogEntryData::readText(ReadBuffer & in)
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{
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UInt8 format_version = 0;
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String type_str;
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in >> "format version: " >> format_version >> "\n";
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if (format_version != 1 && format_version != 2 && format_version != 3)
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throw Exception("Unknown ReplicatedMergeTreeLogEntry format version: " + DB::toString(format_version), ErrorCodes::UNKNOWN_FORMAT_VERSION);
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if (format_version >= 2)
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{
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LocalDateTime create_time_dt;
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in >> "create_time: " >> create_time_dt >> "\n";
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create_time = create_time_dt;
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}
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in >> "source replica: " >> source_replica >> "\n";
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if (format_version >= 3)
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{
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in >> "block_id: " >> escape >> block_id >> "\n";
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}
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in >> type_str >> "\n";
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if (type_str == "get")
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{
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type = GET_PART;
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in >> new_part_name;
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}
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else if (type_str == "merge")
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{
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type = MERGE_PARTS;
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while (true)
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{
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String s;
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in >> s >> "\n";
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if (s == "into")
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break;
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parts_to_merge.push_back(s);
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}
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in >> new_part_name;
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}
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else if (type_str == "drop" || type_str == "detach")
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{
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type = DROP_RANGE;
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detach = type_str == "detach";
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in >> new_part_name;
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}
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else if (type_str == "attach")
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{
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type = ATTACH_PART;
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String source_type;
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in >> source_type;
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if (source_type == "unreplicated")
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attach_unreplicated = true;
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else if (source_type == "detached")
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attach_unreplicated = false;
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else
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throw Exception("Bad format: expected 'unreplicated' or 'detached', found '" + source_type + "'", ErrorCodes::CANNOT_PARSE_TEXT);
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in >> "\n" >> source_part_name >> "\ninto\n" >> new_part_name;
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}
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in >> "\n";
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/// Необязательное поле.
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if (!in.eof())
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in >> "quorum: " >> quorum >> "\n";
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}
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String ReplicatedMergeTreeLogEntryData::toString() const
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{
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String s;
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{
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WriteBufferFromString out(s);
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writeText(out);
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}
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return s;
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}
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ReplicatedMergeTreeLogEntry::Ptr ReplicatedMergeTreeLogEntry::parse(const String & s, const zkutil::Stat & stat)
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{
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ReadBufferFromString in(s);
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Ptr res = std::make_shared<ReplicatedMergeTreeLogEntry>();
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res->readText(in);
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assertEOF(in);
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if (!res->create_time)
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res->create_time = stat.ctime / 1000;
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return res;
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}
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}
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