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774e8e4042
Add support for golang profiling. Standard tools like go tool pprof and curl work. example: $ go tool pprof http://localhost:8080/debug/pprof/profile $ go tool pprof http://localhost:8080/debug/pprof/heap $ curl http://localhost:8080/debug/pprof/heap?debug=1 https://golang.org/pkg/net/http/pprof/ contains more details about the pprof interface. Fixes: #1699 Signed-off-by: Yati Padia <ypadia@redhat.com>
48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
package util
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import (
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"net"
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"net/http"
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"net/http/pprof"
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"net/url"
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runtime_pprof "runtime/pprof"
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"strconv"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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// ValidateURL validates the url.
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func ValidateURL(c *Config) error {
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_, err := url.Parse(c.MetricsPath)
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return err
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}
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// StartMetricsServer starts http server.
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func StartMetricsServer(c *Config) {
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addr := net.JoinHostPort(c.MetricsIP, strconv.Itoa(c.MetricsPort))
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http.Handle(c.MetricsPath, promhttp.Handler())
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err := http.ListenAndServe(addr, nil)
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if err != nil {
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FatalLogMsg("failed to listen on address %v: %s", addr, err)
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}
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}
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func addPath(name string, handler http.Handler) {
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http.Handle(name, handler)
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DebugLogMsg("DEBUG: registered profiling handler on /debug/pprof/%s\n", name)
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}
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// EnableProfiling enables golang profiling.
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func EnableProfiling() {
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for _, profile := range runtime_pprof.Profiles() {
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name := profile.Name()
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handler := pprof.Handler(name)
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addPath(name, handler)
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}
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// static profiles as listed in net/http/pprof/pprof.go:init()
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addPath("cmdline", http.HandlerFunc(pprof.Cmdline))
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addPath("profile", http.HandlerFunc(pprof.Profile))
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addPath("symbol", http.HandlerFunc(pprof.Symbol))
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addPath("trace", http.HandlerFunc(pprof.Trace))
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}
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