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tools.go
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tools.go
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/*
* MIT License
*
* Copyright (c) 2022 Nicolas JUHEL
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*
*/
package server
import (
"bytes"
"context"
"fmt"
"os"
"runtime"
"time"
)
type FunCheck func() bool
type FunRun func()
func RunNbr(max uint8, chk FunCheck, run FunRun) bool {
var i uint8
for i = 0; i < max; i++ {
if chk() {
return true
}
run()
}
return chk()
}
func RunTick(ctx context.Context, tick, max time.Duration, chk FunCheck, run FunRun) bool {
var (
s = time.Now()
t = time.NewTicker(tick)
)
defer t.Stop()
for {
select {
case <-ctx.Done():
return false
case <-t.C:
if chk() {
return true
}
run()
if time.Since(s) >= max {
return chk()
}
}
}
}
func RecoveryCaller(proc string, rec any, data ...any) {
if rec == nil {
return
}
var (
buf = bytes.NewBuffer(make([]byte, 0))
// Set size to targetFrameIndex+2 to ensure we have room for one more caller than we need.
pCnt = make([]uintptr, 10, 255)
nCnt = runtime.Callers(1, pCnt)
)
buf.WriteString(fmt.Sprintf("Receoring process '%s': %v\n", proc, rec))
for _, d := range data {
buf.WriteString(fmt.Sprintf("%v\n", d))
}
if nCnt > 0 {
var (
frames = runtime.CallersFrames(pCnt[:nCnt])
more = true
lCnt = 0
)
for more && lCnt < 10 {
var frame runtime.Frame
frame, more = frames.Next()
if len(frame.File) > 0 {
buf.WriteString(fmt.Sprintf(" trace #%d => Line: %d - File: %s\n", lCnt, frame.Line, frame.File))
lCnt++
} else if len(frame.Function) > 0 {
buf.WriteString(fmt.Sprintf(" trace #%d => Line: %d - Func: %s\n", lCnt, frame.Line, frame.Function))
lCnt++
}
}
}
if buf.Len() > 0 {
_, _ = fmt.Fprint(os.Stderr, buf.Bytes())
}
}