3 Copyright (C) 2013-2020 Minetest core developers team
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 MetricCounter() = default;
31 virtual ~MetricCounter() {}
33 virtual void increment(double number = 1.0) = 0;
34 virtual double get() const = 0;
37 typedef std::shared_ptr<MetricCounter> MetricCounterPtr;
42 MetricGauge() = default;
43 virtual ~MetricGauge() {}
45 virtual void increment(double number = 1.0) = 0;
46 virtual void decrement(double number = 1.0) = 0;
47 virtual void set(double number) = 0;
48 virtual double get() const = 0;
51 typedef std::shared_ptr<MetricGauge> MetricGaugePtr;
56 MetricsBackend() = default;
58 virtual ~MetricsBackend() {}
60 typedef std::initializer_list<std::pair<const std::string, std::string>> Labels;
62 virtual MetricCounterPtr addCounter(
63 const std::string &name, const std::string &help_str,
65 virtual MetricGaugePtr addGauge(
66 const std::string &name, const std::string &help_str,
71 MetricsBackend *createPrometheusMetricsBackend();