Add auto logging of goroutine pid label (#19212)
* Add auto logging of goroutine pid label This PR uses unsafe to export the hidden runtime_getProfLabel function from the runtime package and then casts the result to a map[string]string. We can then interrogate this map to get the pid label from the goroutine allowing us to log it with any logging request. Reference #19202 Signed-off-by: Andrew Thornton <art27@cantab.net>forgejo
parent
c1198284bc
commit
70628bd870
@ -0,0 +1,20 @@
|
|||||||
|
// Copyright 2022 The Gitea Authors. All rights reserved.
|
||||||
|
// Use of this source code is governed by a MIT-style
|
||||||
|
// license that can be found in the LICENSE file.
|
||||||
|
|
||||||
|
package log
|
||||||
|
|
||||||
|
import "unsafe"
|
||||||
|
|
||||||
|
//go:linkname runtime_getProfLabel runtime/pprof.runtime_getProfLabel
|
||||||
|
func runtime_getProfLabel() unsafe.Pointer // nolint
|
||||||
|
|
||||||
|
type labelMap map[string]string
|
||||||
|
|
||||||
|
func getGoroutineLabels() map[string]string {
|
||||||
|
l := (*labelMap)(runtime_getProfLabel())
|
||||||
|
if l == nil {
|
||||||
|
return nil
|
||||||
|
}
|
||||||
|
return *l
|
||||||
|
}
|
@ -0,0 +1,34 @@
|
|||||||
|
// Copyright 2022 The Gitea Authors. All rights reserved.
|
||||||
|
// Use of this source code is governed by a MIT-style
|
||||||
|
// license that can be found in the LICENSE file.
|
||||||
|
|
||||||
|
package log
|
||||||
|
|
||||||
|
import (
|
||||||
|
"context"
|
||||||
|
"runtime/pprof"
|
||||||
|
"testing"
|
||||||
|
|
||||||
|
"github.com/stretchr/testify/assert"
|
||||||
|
)
|
||||||
|
|
||||||
|
func Test_getGoroutineLabels(t *testing.T) {
|
||||||
|
pprof.Do(context.Background(), pprof.Labels(), func(ctx context.Context) {
|
||||||
|
currentLabels := getGoroutineLabels()
|
||||||
|
pprof.ForLabels(ctx, func(key, value string) bool {
|
||||||
|
assert.EqualValues(t, value, currentLabels[key])
|
||||||
|
return true
|
||||||
|
})
|
||||||
|
|
||||||
|
pprof.Do(ctx, pprof.Labels("Test_getGoroutineLabels", "Test_getGoroutineLabels_child1"), func(ctx context.Context) {
|
||||||
|
currentLabels := getGoroutineLabels()
|
||||||
|
pprof.ForLabels(ctx, func(key, value string) bool {
|
||||||
|
assert.EqualValues(t, value, currentLabels[key])
|
||||||
|
return true
|
||||||
|
})
|
||||||
|
if assert.NotNil(t, currentLabels) {
|
||||||
|
assert.EqualValues(t, "Test_getGoroutineLabels_child1", currentLabels["Test_getGoroutineLabels"])
|
||||||
|
}
|
||||||
|
})
|
||||||
|
})
|
||||||
|
}
|
Loading…
Reference in New Issue