mirror of
https://git.rwth-aachen.de/acs/public/villas/web-backend-go/
synced 2025-03-30 00:00:12 +01:00
130 lines
3.8 KiB
Go
130 lines
3.8 KiB
Go
/** Metrics package, endpoints.
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*
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* @author Sonja Happ <sonja.happ@eonerc.rwth-aachen.de>
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* @copyright 2014-2019, Institute for Automation of Complex Power Systems, EONERC
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* @license GNU General Public License (version 3)
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*
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* VILLASweb-backend-go
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************************/
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package metrics
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import (
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"github.com/chenjiandongx/ginprom"
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"github.com/gin-gonic/gin"
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"github.com/jinzhu/gorm"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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var (
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ICCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "infrastructure_components",
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Help: "A counter for the total number of infrastructure_components",
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},
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)
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SimulationModelCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "simulation_models",
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Help: "A counter for the total number of simulation models",
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},
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)
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FileCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "files",
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Help: "A counter for the total number of files",
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},
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)
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ScenarioCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "scenarios",
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Help: "A counter for the total number of scenarios",
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},
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)
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UserCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "users",
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Help: "A counter for the total number of users",
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},
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)
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DashboardCounter = prometheus.NewCounter(
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prometheus.CounterOpts{
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Name: "dashboards",
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Help: "A counter for the total number of dashboards",
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},
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)
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)
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// RegisterMetricsEndpoint godoc
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// @Summary Prometheus metrics endpoint
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// @ID getMetrics
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// @Produce json
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// @Tags metrics
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// @Success 200 "Returns Prometheus metrics"
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// @Router /metrics [get]
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func RegisterMetricsEndpoint(rg *gin.RouterGroup) {
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// use prometheus metrics exporter middleware.
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//
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// ginprom.PromMiddleware() expects a ginprom.PromOpts{} poniter.
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// It was used for filtering labels with regex. `nil` will pass every requests.
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//
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// ginprom promethues-labels:
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// `status`, `endpoint`, `method`
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//
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// for example:
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// 1). I want not to record the 404 status request. That's easy for it.
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// ginprom.PromMiddleware(&ginprom.PromOpts{ExcludeRegexStatus: "404"})
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//
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// 2). And I wish ignore endpoint start with `/prefix`.
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// ginprom.PromMiddleware(&ginprom.PromOpts{ExcludeRegexEndpoint: "^/prefix"})
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r := gin.Default()
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r.Use(ginprom.PromMiddleware(nil))
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rg.GET("", ginprom.PromHandler(promhttp.Handler()))
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// Register metrics
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prometheus.MustRegister(
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ICCounter,
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SimulationModelCounter,
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FileCounter,
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ScenarioCounter,
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UserCounter,
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DashboardCounter,
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)
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}
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func InitCounters(db *gorm.DB) {
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var infrastructure_components, simulation_models, files, scenarios, users, dashboards float64
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db.Table("infrastructure_components").Count(&infrastructure_components)
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db.Table("simulation_models").Count(&simulation_models)
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db.Table("files").Count(&files)
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db.Table("scenarios").Count(&scenarios)
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db.Table("users").Count(&users)
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db.Table("dashboards").Count(&dashboards)
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ICCounter.Add(infrastructure_components)
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SimulationModelCounter.Add(simulation_models)
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FileCounter.Add(files)
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ScenarioCounter.Add(scenarios)
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UserCounter.Add(users)
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DashboardCounter.Add(dashboards)
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}
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