6a7b6d4b89
1. Remove persistence of performance data
2. Move global CanonicalPerformance into SmartRouter object
3. Implement another kill_all_others_v2. Left kill_all_others_v1
in case it should be fixed and used instead.
109 lines
2.7 KiB
C++
109 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2019 MariaDB Corporation Ab
|
|
*
|
|
* Use of this software is governed by the Business Source License included
|
|
* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
|
|
*
|
|
* Change Date: 2022-01-01
|
|
*
|
|
* On the date above, in accordance with the Business Source License, use
|
|
* of this software will be governed by version 2 or later of the General
|
|
* Public License.
|
|
*/
|
|
#pragma once
|
|
|
|
#include <maxscale/ccdefs.hh>
|
|
|
|
#include <maxbase/stopwatch.hh>
|
|
#include <maxbase/host.hh>
|
|
|
|
#include <unordered_map>
|
|
|
|
/** Class PerformanceInfo is a basic structure for storing a Host and Duration pair, along with
|
|
* the time it was created.
|
|
*/
|
|
class PerformanceInfo
|
|
{
|
|
public:
|
|
PerformanceInfo() = default; // creates an instance where is_valid()==false;
|
|
PerformanceInfo(const maxbase::Host& h, maxbase::Duration d);
|
|
|
|
bool is_valid() const;
|
|
|
|
maxbase::Host host() const;
|
|
maxbase::Duration duration() const;
|
|
|
|
/** When was this PerformanceInfo created.
|
|
*/
|
|
maxbase::TimePoint creation_time() const;
|
|
|
|
/** Duration since this PerformanceInfo was created
|
|
*/
|
|
maxbase::Duration age() const;
|
|
private:
|
|
maxbase::Host m_host;
|
|
maxbase::Duration m_duration;
|
|
|
|
maxbase::TimePoint m_creation_time = maxbase::Clock::now();
|
|
};
|
|
|
|
/** class CanonicalPerformance holds the performance
|
|
* info gathered since the start of Maxscale.
|
|
* The Beta release will not perist to file.
|
|
*/
|
|
class CanonicalPerformance
|
|
{
|
|
public:
|
|
explicit CanonicalPerformance();
|
|
|
|
/** Insert if not already inserted and return true, else false. */
|
|
bool insert(const std::string& canonical, const PerformanceInfo& perf);
|
|
|
|
/** Remove if entry exists and return true, else false. */
|
|
bool remove(const std::string& canonical);
|
|
|
|
/** If entry does not exists, returned PerformanceInfo::is_valid()==false */
|
|
PerformanceInfo find(const std::string& canonical);
|
|
|
|
void clear();
|
|
private:
|
|
std::unordered_map<std::string, PerformanceInfo> m_perfs;
|
|
|
|
mutable int m_nChanges;
|
|
};
|
|
|
|
// For logging. Shortens str to nchars and adds "..." TODO move somewhere more appropriate
|
|
std::string show_some(const std::string& str, int nchars = 70);
|
|
|
|
// implementation details below
|
|
inline PerformanceInfo::PerformanceInfo(const maxbase::Host& h, maxbase::Duration d)
|
|
: m_host(h)
|
|
, m_duration(d)
|
|
{
|
|
}
|
|
|
|
inline bool PerformanceInfo::is_valid() const
|
|
{
|
|
return m_host.is_valid();
|
|
}
|
|
|
|
inline maxbase::Host PerformanceInfo::host() const
|
|
{
|
|
return m_host;
|
|
}
|
|
|
|
inline maxbase::Duration PerformanceInfo::duration() const
|
|
{
|
|
return m_duration;
|
|
}
|
|
|
|
inline maxbase::TimePoint PerformanceInfo::creation_time() const
|
|
{
|
|
return m_creation_time;
|
|
}
|
|
|
|
inline maxbase::Duration PerformanceInfo::age() const
|
|
{
|
|
return maxbase::Clock::now() - m_creation_time;
|
|
}
|