d2ea21d0d8
* use certmagic for more extensible/robust ACME cert handling * accept TOS based on config option Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: zeripath <art27@cantab.net> Co-authored-by: Lauris BH <lauris@nix.lv>
126 lines
3.8 KiB
Go
126 lines
3.8 KiB
Go
// Copyright (c) 2016 Uber Technologies, Inc.
|
|
//
|
|
// 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 zap
|
|
|
|
import (
|
|
"runtime"
|
|
"strings"
|
|
"sync"
|
|
|
|
"go.uber.org/zap/internal/bufferpool"
|
|
)
|
|
|
|
const _zapPackage = "go.uber.org/zap"
|
|
|
|
var (
|
|
_stacktracePool = sync.Pool{
|
|
New: func() interface{} {
|
|
return newProgramCounters(64)
|
|
},
|
|
}
|
|
|
|
// We add "." and "/" suffixes to the package name to ensure we only match
|
|
// the exact package and not any package with the same prefix.
|
|
_zapStacktracePrefixes = addPrefix(_zapPackage, ".", "/")
|
|
_zapStacktraceVendorContains = addPrefix("/vendor/", _zapStacktracePrefixes...)
|
|
)
|
|
|
|
func takeStacktrace() string {
|
|
buffer := bufferpool.Get()
|
|
defer buffer.Free()
|
|
programCounters := _stacktracePool.Get().(*programCounters)
|
|
defer _stacktracePool.Put(programCounters)
|
|
|
|
var numFrames int
|
|
for {
|
|
// Skip the call to runtime.Counters and takeStacktrace so that the
|
|
// program counters start at the caller of takeStacktrace.
|
|
numFrames = runtime.Callers(2, programCounters.pcs)
|
|
if numFrames < len(programCounters.pcs) {
|
|
break
|
|
}
|
|
// Don't put the too-short counter slice back into the pool; this lets
|
|
// the pool adjust if we consistently take deep stacktraces.
|
|
programCounters = newProgramCounters(len(programCounters.pcs) * 2)
|
|
}
|
|
|
|
i := 0
|
|
skipZapFrames := true // skip all consecutive zap frames at the beginning.
|
|
frames := runtime.CallersFrames(programCounters.pcs[:numFrames])
|
|
|
|
// Note: On the last iteration, frames.Next() returns false, with a valid
|
|
// frame, but we ignore this frame. The last frame is a a runtime frame which
|
|
// adds noise, since it's only either runtime.main or runtime.goexit.
|
|
for frame, more := frames.Next(); more; frame, more = frames.Next() {
|
|
if skipZapFrames && isZapFrame(frame.Function) {
|
|
continue
|
|
} else {
|
|
skipZapFrames = false
|
|
}
|
|
|
|
if i != 0 {
|
|
buffer.AppendByte('\n')
|
|
}
|
|
i++
|
|
buffer.AppendString(frame.Function)
|
|
buffer.AppendByte('\n')
|
|
buffer.AppendByte('\t')
|
|
buffer.AppendString(frame.File)
|
|
buffer.AppendByte(':')
|
|
buffer.AppendInt(int64(frame.Line))
|
|
}
|
|
|
|
return buffer.String()
|
|
}
|
|
|
|
func isZapFrame(function string) bool {
|
|
for _, prefix := range _zapStacktracePrefixes {
|
|
if strings.HasPrefix(function, prefix) {
|
|
return true
|
|
}
|
|
}
|
|
|
|
// We can't use a prefix match here since the location of the vendor
|
|
// directory affects the prefix. Instead we do a contains match.
|
|
for _, contains := range _zapStacktraceVendorContains {
|
|
if strings.Contains(function, contains) {
|
|
return true
|
|
}
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
type programCounters struct {
|
|
pcs []uintptr
|
|
}
|
|
|
|
func newProgramCounters(size int) *programCounters {
|
|
return &programCounters{make([]uintptr, size)}
|
|
}
|
|
|
|
func addPrefix(prefix string, ss ...string) []string {
|
|
withPrefix := make([]string, len(ss))
|
|
for i, s := range ss {
|
|
withPrefix[i] = prefix + s
|
|
}
|
|
return withPrefix
|
|
}
|