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stack.go
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stack.go
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// Copyright Project Harbor Authors
//
// 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 errors
import (
"fmt"
"runtime"
"strings"
)
const maxDepth = 50
type stack []uintptr
func (s *stack) frames() StackFrames {
var stackFrames StackFrames
frames := runtime.CallersFrames(*s)
for {
frame, next := frames.Next()
// filter out runtime
if !strings.Contains(frame.File, "runtime/") {
stackFrames = append(stackFrames, frame)
}
if !next {
break
}
}
return stackFrames
}
// newStack ...
func newStack() *stack {
var pcs [maxDepth]uintptr
n := runtime.Callers(3, pcs[:])
var st stack = pcs[0:n]
return &st
}
// StackFrames ...
// ToDo we can define an Harbor frame to customize trace message, but it depends on requirement
type StackFrames []runtime.Frame
// Output: <File>:<Line>, <Method>
func (frames StackFrames) format() string {
var msg string
for _, frame := range frames {
msg = msg + fmt.Sprintf("\n%v:%v, %v", frame.File, frame.Line, frame.Function)
}
return msg
}