mirror of https://github.com/linkerd/linkerd2.git
61 lines
1.3 KiB
Go
61 lines
1.3 KiB
Go
package admin
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import (
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"fmt"
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"net/http"
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"net/http/pprof"
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"strings"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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log "github.com/sirupsen/logrus"
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)
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type handler struct {
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promHandler http.Handler
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}
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// StartServer starts an admin server listening on a given address.
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func StartServer(addr string) {
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log.Infof("starting admin server on %s", addr)
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h := &handler{
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promHandler: promhttp.Handler(),
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}
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log.Fatal(http.ListenAndServe(addr, h))
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}
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func (h *handler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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debugPathPrefix := "/debug/pprof/"
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switch req.URL.Path {
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case "/metrics":
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h.promHandler.ServeHTTP(w, req)
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case "/ping":
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h.servePing(w)
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case "/ready":
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h.serveReady(w)
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case fmt.Sprintf("%scmdline", debugPathPrefix):
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pprof.Cmdline(w, req)
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case fmt.Sprintf("%sprofile", debugPathPrefix):
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pprof.Profile(w, req)
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case fmt.Sprintf("%strace", debugPathPrefix):
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pprof.Trace(w, req)
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case fmt.Sprintf("%ssymbol", debugPathPrefix):
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pprof.Symbol(w, req)
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default:
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if strings.HasPrefix(req.URL.Path, "/debug/pprof/") {
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pprof.Index(w, req)
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} else {
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http.NotFound(w, req)
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}
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}
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}
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func (h *handler) servePing(w http.ResponseWriter) {
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w.Write([]byte("pong\n"))
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}
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func (h *handler) serveReady(w http.ResponseWriter) {
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w.Write([]byte("ok\n"))
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}
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