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ebc278ec98
* metrics: allow disabling OpenMetrics negotiation Signed-off-by: Dave Henderson <dhenderson@gmail.com> * fixup! metrics: allow disabling OpenMetrics negotiation
55 lines
1.7 KiB
Go
55 lines
1.7 KiB
Go
// Copyright 2020 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package metrics
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import (
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"net/http"
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"github.com/caddyserver/caddy/v2"
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)
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func init() {
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caddy.RegisterModule(AdminMetrics{})
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}
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// AdminMetrics is a module that serves a metrics endpoint so that any gathered
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// metrics can be exposed for scraping. This module is not configurable, and
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// is permanently mounted to the admin API endpoint at "/metrics".
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// See the Metrics module for a configurable endpoint that is usable if the
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// Admin API is disabled.
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type AdminMetrics struct{}
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// CaddyModule returns the Caddy module information.
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func (AdminMetrics) CaddyModule() caddy.ModuleInfo {
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return caddy.ModuleInfo{
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ID: "admin.api.metrics",
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New: func() caddy.Module { return new(AdminMetrics) },
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}
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}
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// Routes returns a route for the /metrics endpoint.
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func (m *AdminMetrics) Routes() []caddy.AdminRoute {
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metricsHandler := createMetricsHandler(nil, false)
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h := caddy.AdminHandlerFunc(func(w http.ResponseWriter, r *http.Request) error {
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metricsHandler.ServeHTTP(w, r)
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return nil
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})
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return []caddy.AdminRoute{{Pattern: "/metrics", Handler: h}}
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}
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// Interface guards
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var (
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_ caddy.AdminRouter = (*AdminMetrics)(nil)
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)
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