mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-23 06:40:23 +00:00
89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
package merry
|
|
|
|
import (
|
|
"sync"
|
|
)
|
|
|
|
var maxStackDepth = 50
|
|
var captureStacks = true
|
|
|
|
// StackCaptureEnabled returns whether stack capturing is enabled.
|
|
func StackCaptureEnabled() bool {
|
|
return captureStacks
|
|
}
|
|
|
|
// SetStackCaptureEnabled sets stack capturing globally. Disabling stack capture can increase performance.
|
|
// Capture can be forced or suppressed to override this global setting on a particular error.
|
|
func SetStackCaptureEnabled(enabled bool) {
|
|
captureStacks = enabled
|
|
}
|
|
|
|
// MaxStackDepth returns the number of frames captured in stacks.
|
|
func MaxStackDepth() int {
|
|
return maxStackDepth
|
|
}
|
|
|
|
// SetMaxStackDepth sets the MaxStackDepth.
|
|
func SetMaxStackDepth(depth int) {
|
|
maxStackDepth = depth
|
|
}
|
|
|
|
func init() {
|
|
RegisterDetail("User Message", errKeyUserMessage)
|
|
RegisterDetail("HTTP Code", errKeyHTTPCode)
|
|
}
|
|
|
|
var detailsLock sync.Mutex
|
|
var detailFields = map[string]func(err error) interface{}{}
|
|
|
|
// RegisterDetail registers an error property key in a global registry, with a label.
|
|
// See RegisterDetailFunc. This function just wraps a call to Value(key) and passes
|
|
// it to RegisterDetailFunc.
|
|
func RegisterDetail(label string, key interface{}) {
|
|
RegisterDetailFunc(label, func(err error) interface{} {
|
|
return Value(err, key)
|
|
})
|
|
}
|
|
|
|
// RegisterDetailFunc registers a label and a function for extracting a value from
|
|
// an error. When formatting errors produced by this package using the
|
|
// `%+v` placeholder, or when using Details(), these functions will be called
|
|
// on the error, and any non-nil values will be added to the text.
|
|
// For example:
|
|
//
|
|
// err := New("boom")
|
|
// err = err.WithValue(colorKey, "red")
|
|
// fmt.Println(Details(err))
|
|
//
|
|
// // Output:
|
|
// // boom
|
|
// //
|
|
// // <stacktrace>
|
|
//
|
|
// func Color(err) string {
|
|
// s, _ := Value(err, colorKey)
|
|
// return s
|
|
// }
|
|
//
|
|
// RegisterDetailFunc("color", Color)
|
|
// fmt.Println(Details(err))
|
|
//
|
|
// // Output:
|
|
// // boom
|
|
// // color: red
|
|
// //
|
|
// // <stacktrace>
|
|
//
|
|
// Error property keys are typically not exported by the packages which define them.
|
|
// Packages instead export functions which let callers access that property.
|
|
// It's therefore up to the package
|
|
// to register those properties which would make sense to include in the Details() output.
|
|
// In other words, it's up to the author of the package which generates the errors
|
|
// to publish printable error details, not the callers of the package.
|
|
func RegisterDetailFunc(label string, f func(err error) interface{}) {
|
|
detailsLock.Lock()
|
|
defer detailsLock.Unlock()
|
|
|
|
detailFields[label] = f
|
|
}
|