mirror of
https://github.com/ceph/ceph-csi.git
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83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
/*
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Copyright 2022 The Kubernetes 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 routes
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import (
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"fmt"
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"net"
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"net/http"
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"net/http/pprof"
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"os"
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"path"
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)
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// DebugSocket installs profiling and debugflag as a Unix-Domain socket.
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type DebugSocket struct {
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path string
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mux *http.ServeMux
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}
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// NewDebugSocket creates a new DebugSocket for the given path.
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func NewDebugSocket(path string) *DebugSocket {
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return &DebugSocket{
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path: path,
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mux: http.NewServeMux(),
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}
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}
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// InstallProfiling installs profiling endpoints in the socket.
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func (s *DebugSocket) InstallProfiling() {
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s.mux.HandleFunc("/debug/pprof", redirectTo("/debug/pprof/"))
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s.mux.HandleFunc("/debug/pprof/", pprof.Index)
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s.mux.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
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s.mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
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s.mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
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s.mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
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}
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// InstallDebugFlag installs debug flag endpoints in the socket.
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func (s *DebugSocket) InstallDebugFlag(flag string, handler func(http.ResponseWriter, *http.Request)) {
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f := DebugFlags{}
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s.mux.HandleFunc("/debug/flags", f.Index)
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s.mux.HandleFunc("/debug/flags/", f.Index)
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url := path.Join("/debug/flags", flag)
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s.mux.HandleFunc(url, handler)
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f.addFlag(flag)
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}
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// Run starts the server and waits for stopCh to be closed to close the server.
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func (s *DebugSocket) Run(stopCh <-chan struct{}) error {
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if err := os.Remove(s.path); err != nil && !os.IsNotExist(err) {
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return fmt.Errorf("failed to remove (%v): %v", s.path, err)
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}
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l, err := net.Listen("unix", s.path)
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if err != nil {
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return fmt.Errorf("listen error (%v): %v", s.path, err)
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}
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defer l.Close()
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srv := http.Server{Handler: s.mux}
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go func() {
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<-stopCh
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srv.Close()
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}()
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return srv.Serve(l)
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}
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