ClickHouse/src/Storages/MergeTree/ReplicatedMergeTreeMutationEntry.cpp
2022-07-05 14:51:09 +02:00

103 lines
2.7 KiB
C++

#include <Storages/MergeTree/ReplicatedMergeTreeMutationEntry.h>
#include <IO/Operators.h>
#include <IO/ReadBufferFromString.h>
#include <IO/WriteBufferFromString.h>
#include <IO/ReadHelpers.h>
#include <Backups/BackupEntryFromMemory.h>
namespace DB
{
void ReplicatedMergeTreeMutationEntry::writeText(WriteBuffer & out) const
{
out << "format version: 1\n"
<< "create time: " << LocalDateTime(create_time ? create_time : time(nullptr)) << "\n"
<< "source replica: " << source_replica << "\n"
<< "block numbers count: " << block_numbers.size() << "\n";
for (const auto & kv : block_numbers)
{
const String & partition_id = kv.first;
Int64 number = kv.second;
out << partition_id << "\t" << number << "\n";
}
out << "commands: ";
commands.writeText(out);
out << "\n";
out << "alter version: ";
out << alter_version;
}
void ReplicatedMergeTreeMutationEntry::readText(ReadBuffer & in)
{
in >> "format version: 1\n";
LocalDateTime create_time_dt;
in >> "create time: " >> create_time_dt >> "\n";
create_time = DateLUT::instance().makeDateTime(
create_time_dt.year(), create_time_dt.month(), create_time_dt.day(),
create_time_dt.hour(), create_time_dt.minute(), create_time_dt.second());
in >> "source replica: " >> source_replica >> "\n";
size_t count;
in >> "block numbers count: " >> count >> "\n";
for (size_t i = 0; i < count; ++i)
{
String partition_id;
Int64 number;
in >> partition_id >> "\t" >> number >> "\n";
block_numbers[partition_id] = number;
}
in >> "commands: ";
commands.readText(in);
if (checkString("\nalter version: ", in))
in >> alter_version;
}
String ReplicatedMergeTreeMutationEntry::toString() const
{
WriteBufferFromOwnString out;
writeText(out);
return out.str();
}
ReplicatedMergeTreeMutationEntry ReplicatedMergeTreeMutationEntry::parse(const String & str, String znode_name)
{
ReplicatedMergeTreeMutationEntry res;
res.znode_name = std::move(znode_name);
ReadBufferFromString in(str);
res.readText(in);
assertEOF(in);
return res;
}
std::shared_ptr<const IBackupEntry> ReplicatedMergeTreeMutationEntry::backup() const
{
WriteBufferFromOwnString out;
out << "block numbers count: " << block_numbers.size() << "\n";
for (const auto & kv : block_numbers)
{
const String & partition_id = kv.first;
Int64 number = kv.second;
out << partition_id << "\t" << number << "\n";
}
out << "commands: ";
commands.writeText(out);
out << "\n";
return std::make_shared<BackupEntryFromMemory>(out.str());
}
}