93 lines
2 KiB
Go
93 lines
2 KiB
Go
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package libcontainer
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import (
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"fmt"
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"io"
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"text/template"
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"time"
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"github.com/opencontainers/runc/libcontainer/stacktrace"
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)
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var errorTemplate = template.Must(template.New("error").Parse(`Timestamp: {{.Timestamp}}
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Code: {{.ECode}}
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{{if .Message }}
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Message: {{.Message}}
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{{end}}
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Frames:{{range $i, $frame := .Stack.Frames}}
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---
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{{$i}}: {{$frame.Function}}
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Package: {{$frame.Package}}
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File: {{$frame.File}}@{{$frame.Line}}{{end}}
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`))
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func newGenericError(err error, c ErrorCode) Error {
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if le, ok := err.(Error); ok {
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return le
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}
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gerr := &genericError{
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Timestamp: time.Now(),
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Err: err,
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ECode: c,
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Stack: stacktrace.Capture(1),
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}
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if err != nil {
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gerr.Message = err.Error()
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}
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return gerr
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}
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func newSystemError(err error) Error {
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return createSystemError(err, "")
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}
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func newSystemErrorWithCausef(err error, cause string, v ...interface{}) Error {
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return createSystemError(err, fmt.Sprintf(cause, v...))
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}
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func newSystemErrorWithCause(err error, cause string) Error {
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return createSystemError(err, cause)
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}
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// createSystemError creates the specified error with the correct number of
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// stack frames skipped. This is only to be called by the other functions for
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// formatting the error.
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func createSystemError(err error, cause string) Error {
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gerr := &genericError{
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Timestamp: time.Now(),
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Err: err,
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ECode: SystemError,
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Cause: cause,
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Stack: stacktrace.Capture(2),
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}
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if err != nil {
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gerr.Message = err.Error()
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}
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return gerr
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}
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type genericError struct {
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Timestamp time.Time
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ECode ErrorCode
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Err error `json:"-"`
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Cause string
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Message string
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Stack stacktrace.Stacktrace
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}
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func (e *genericError) Error() string {
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if e.Cause == "" {
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return e.Message
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}
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frame := e.Stack.Frames[0]
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return fmt.Sprintf("%s:%d: %s caused %q", frame.File, frame.Line, e.Cause, e.Message)
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}
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func (e *genericError) Code() ErrorCode {
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return e.ECode
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}
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func (e *genericError) Detail(w io.Writer) error {
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return errorTemplate.Execute(w, e)
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}
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