mirror of
https://github.com/containerd/containerd.git
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86 lines
1.9 KiB
Go
86 lines
1.9 KiB
Go
/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package metrics
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import (
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"context"
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"fmt"
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"net"
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"net/http"
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"time"
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"github.com/containerd/plugin"
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"github.com/containerd/plugin/registry"
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"github.com/docker/go-metrics"
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"github.com/containerd/containerd/v2/plugins"
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"github.com/containerd/containerd/v2/plugins/server/internal"
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)
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type config struct {
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Address string `toml:"address"`
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}
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func init() {
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registry.Register(&plugin.Registration{
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Type: plugins.ServerPlugin,
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ID: "metrics",
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Config: &config{},
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InitFn: func(ic *plugin.InitContext) (any, error) {
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c := ic.Config.(*config)
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if c.Address == "" {
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return nil, plugin.ErrSkipPlugin
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}
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m := http.NewServeMux()
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m.Handle("/v1/metrics", metrics.Handler())
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return &server{
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handler: m,
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address: c.Address,
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}, nil
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},
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})
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}
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type server struct {
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handler http.Handler
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address string
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srv *http.Server
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}
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func (s *server) Start(ctx context.Context) error {
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l, err := net.Listen("tcp", s.address)
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if err != nil {
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return fmt.Errorf("failed to get listener for metrics endpoint: %w", err)
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}
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s.srv = &http.Server{
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Handler: s.handler,
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ReadHeaderTimeout: 5 * time.Minute, // "G112: Potential Slowloris Attack (gosec)"; not a real concern for our use, so setting a long timeout.
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}
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internal.Serve(ctx, l, s.srv.Serve)
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return nil
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}
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func (s *server) Close() error {
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if s.srv == nil {
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return nil
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}
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return s.srv.Close()
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}
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