mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-13 01:41:59 +00:00
79 lines
1.7 KiB
C++
79 lines
1.7 KiB
C++
#pragma once
|
|
|
|
#include <Interpreters/SystemLog.h>
|
|
#include <Interpreters/ClientInfo.h>
|
|
#include <Core/SettingsCollection.h>
|
|
|
|
|
|
namespace ProfileEvents
|
|
{
|
|
class Counters;
|
|
}
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
|
|
/** Allows to log information about queries execution:
|
|
* - info about start of query execution;
|
|
* - performance metrics (are set at the end of query execution);
|
|
* - info about errors of query execution.
|
|
*/
|
|
|
|
/// A struct which will be inserted as row into query_log table
|
|
struct QueryLogElement
|
|
{
|
|
using Type = QueryLogElementType;
|
|
|
|
Type type = QUERY_START;
|
|
|
|
/// Depending on the type of query and type of stage, not all the fields may be filled.
|
|
|
|
time_t event_time{};
|
|
time_t query_start_time{};
|
|
UInt64 query_duration_ms{};
|
|
|
|
/// The data fetched from DB to execute the query
|
|
UInt64 read_rows{};
|
|
UInt64 read_bytes{};
|
|
|
|
/// The data written to DB
|
|
UInt64 written_rows{};
|
|
UInt64 written_bytes{};
|
|
|
|
/// The data sent to the client
|
|
UInt64 result_rows{};
|
|
UInt64 result_bytes{};
|
|
|
|
UInt64 memory_usage{};
|
|
|
|
String query;
|
|
|
|
Int32 exception_code{}; // because ErrorCodes are int
|
|
String exception;
|
|
String stack_trace;
|
|
|
|
ClientInfo client_info;
|
|
|
|
std::vector<UInt64> thread_ids;
|
|
std::shared_ptr<ProfileEvents::Counters> profile_counters;
|
|
std::shared_ptr<Settings> query_settings;
|
|
|
|
static std::string name() { return "QueryLog"; }
|
|
|
|
static Block createBlock();
|
|
void appendToBlock(MutableColumns & columns) const;
|
|
|
|
static void appendClientInfo(const ClientInfo & client_info, MutableColumns & columns, size_t & i);
|
|
};
|
|
|
|
|
|
/// Instead of typedef - to allow forward declaration.
|
|
class QueryLog : public SystemLog<QueryLogElement>
|
|
{
|
|
using SystemLog<QueryLogElement>::SystemLog;
|
|
};
|
|
|
|
}
|