mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-02 06:30:55 +00:00
77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
#pragma once
|
|
|
|
#include <set>
|
|
#include <Core/Types.h>
|
|
#include <IO/ReadBuffer.h>
|
|
#include <IO/ReadBufferFromString.h>
|
|
#include <IO/WriteBuffer.h>
|
|
#include <IO/WriteBufferFromString.h>
|
|
#include <IO/Operators.h>
|
|
#include <Common/ZooKeeper/ZooKeeper.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
/** To implement the functionality of the "quorum write".
|
|
* Information about which replicas the inserted part of data appeared on,
|
|
* and on how many replicas it should be.
|
|
*/
|
|
struct ReplicatedMergeTreeQuorumEntry
|
|
{
|
|
String part_name;
|
|
size_t required_number_of_replicas;
|
|
std::set<String> replicas;
|
|
|
|
ReplicatedMergeTreeQuorumEntry() {}
|
|
ReplicatedMergeTreeQuorumEntry(const String & str)
|
|
{
|
|
fromString(str);
|
|
}
|
|
|
|
void writeText(WriteBuffer & out) const
|
|
{
|
|
out << "version: 1\n"
|
|
<< "part_name: " << part_name << "\n"
|
|
<< "required_number_of_replicas: " << required_number_of_replicas << "\n"
|
|
<< "actual_number_of_replicas: " << replicas.size() << "\n"
|
|
<< "replicas:\n";
|
|
|
|
for (const auto & replica : replicas)
|
|
out << escape << replica << "\n";
|
|
}
|
|
|
|
void readText(ReadBuffer & in)
|
|
{
|
|
size_t actual_number_of_replicas = 0;
|
|
|
|
in >> "version: 1\n"
|
|
>> "part_name: " >> part_name >> "\n"
|
|
>> "required_number_of_replicas: " >> required_number_of_replicas >> "\n"
|
|
>> "actual_number_of_replicas: " >> actual_number_of_replicas >> "\n"
|
|
>> "replicas:\n";
|
|
|
|
for (size_t i = 0; i < actual_number_of_replicas; ++i)
|
|
{
|
|
String replica;
|
|
in >> escape >> replica >> "\n";
|
|
replicas.insert(replica);
|
|
}
|
|
}
|
|
|
|
String toString() const
|
|
{
|
|
WriteBufferFromOwnString out;
|
|
writeText(out);
|
|
return out.str();
|
|
}
|
|
|
|
void fromString(const String & str)
|
|
{
|
|
ReadBufferFromString in(str);
|
|
readText(in);
|
|
}
|
|
};
|
|
|
|
}
|