/
pprof.go
88 lines (78 loc) · 2.1 KB
/
pprof.go
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// Copyright 2023 StreamNative, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package common
import (
"context"
"fmt"
"io"
"log/slog"
"net/http"
_ "net/http/pprof" //nolint:gosec
"os"
"runtime/pprof"
"time"
)
var (
PprofEnable bool
PprofBindAddress string
)
// DoWithLabels attaches the labels to the current go-routine Pprof context,
// for the duration of the call to f.
func DoWithLabels(ctx context.Context, labels map[string]string, f func()) {
l := make([]string, 0, len(labels)*2)
for k, v := range labels {
l = append(l, k, v)
}
pprof.Do(
ctx,
pprof.Labels(l...),
func(_ context.Context) {
f()
})
}
func RunProfiling() io.Closer {
s := &http.Server{
Addr: PprofBindAddress,
Handler: http.DefaultServeMux,
ReadHeaderTimeout: time.Second,
}
if !PprofEnable {
// Do not start pprof server
return s
}
slog.Info(
"Starting pprof server",
slog.String("address", s.Addr),
)
slog.Info(fmt.Sprintf(" use http://%s/debug/pprof to access the browser", s.Addr))
slog.Info(fmt.Sprintf(" use `go tool pprof http://%s/debug/pprof/profile` to get pprof file(cpu info)", s.Addr))
slog.Info(fmt.Sprintf(" use `go tool pprof http://%s/debug/pprof/heap` to get inuse_space file", s.Addr))
slog.Info("")
go DoWithLabels(
context.Background(),
map[string]string{
"oxia": "pprof",
},
func() {
if err := s.ListenAndServe(); err != nil && err != http.ErrServerClosed {
slog.Error(
"Unable to start debug profiling server",
slog.Any("error", err),
slog.String("component", "pprof"),
)
os.Exit(1)
}
})
return s
}