gotosocial/internal/api/metrics.go

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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package api
import (
"github.com/gin-gonic/gin"
"github.com/superseriousbusiness/gotosocial/internal/api/metrics"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/middleware"
"github.com/superseriousbusiness/gotosocial/internal/router"
)
type Metrics struct {
metrics *metrics.Module
}
func (mt *Metrics) Route(r *router.Router, m ...gin.HandlerFunc) {
if !config.GetMetricsEnabled() {
// Noop: metrics
// not enabled.
return
}
// Create new group on top level "metrics" prefix.
metricsGroup := r.AttachGroup("metrics")
metricsGroup.Use(m...)
metricsGroup.Use(
middleware.CacheControl(middleware.CacheControlConfig{
// Never cache metrics responses.
Directives: []string{"no-store"},
}),
)
// Attach basic auth if enabled.
if config.GetMetricsAuthEnabled() {
var (
username = config.GetMetricsAuthUsername()
password = config.GetMetricsAuthPassword()
accounts = gin.Accounts{username: password}
)
metricsGroup.Use(gin.BasicAuth(accounts))
}
mt.metrics.Route(metricsGroup.Handle)
}
func NewMetrics() *Metrics {
return &Metrics{
metrics: metrics.New(),
}
}