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146 lines
3.2 KiB
Go
146 lines
3.2 KiB
Go
package errors
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import (
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"fmt"
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"strings"
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)
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// ==================== juju adaptor start ========================
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// Trace just calls AddStack.
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func Trace(err error) error {
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if err == nil {
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return nil
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}
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return AddStack(err)
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}
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// Annotate adds a message and ensures there is a stack trace.
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func Annotate(err error, message string) error {
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if err == nil {
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return nil
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}
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hasStack := HasStack(err)
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err = &withMessage{
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cause: err,
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msg: message,
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causeHasStack: hasStack,
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}
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if hasStack {
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return err
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}
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return &withStack{
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err,
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callers(),
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}
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}
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// Annotatef adds a message and ensures there is a stack trace.
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func Annotatef(err error, format string, args ...interface{}) error {
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if err == nil {
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return nil
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}
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hasStack := HasStack(err)
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err = &withMessage{
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cause: err,
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msg: fmt.Sprintf(format, args...),
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causeHasStack: hasStack,
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}
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if hasStack {
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return err
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}
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return &withStack{
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err,
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callers(),
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}
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}
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var emptyStack stack
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// NewNoStackError creates error without error stack
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// later duplicate trace will no longer generate Stack too.
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func NewNoStackError(msg string) error {
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return &fundamental{
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msg: msg,
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stack: &emptyStack,
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}
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}
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// SuspendStack suspends stack generate for error.
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func SuspendStack(err error) error {
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if err == nil {
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return err
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}
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cleared := clearStack(err)
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if cleared {
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return err
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}
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return &withStack{
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err,
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&emptyStack,
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}
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}
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func clearStack(err error) (cleared bool) {
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switch typedErr := err.(type) {
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case *withMessage:
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return clearStack(typedErr.Cause())
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case *fundamental:
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typedErr.stack = &emptyStack
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return true
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case *withStack:
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typedErr.stack = &emptyStack
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clearStack(typedErr.Cause())
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return true
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default:
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return false
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}
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}
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// ErrorStack will format a stack trace if it is available, otherwise it will be Error()
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// If the error is nil, the empty string is returned
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// Note that this just calls fmt.Sprintf("%+v", err)
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func ErrorStack(err error) string {
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if err == nil {
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return ""
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}
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return fmt.Sprintf("%+v", err)
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}
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// IsNotFound reports whether err was not found error.
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func IsNotFound(err error) bool {
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return strings.Contains(err.Error(), "not found")
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}
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// NotFoundf represents an error with not found message.
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func NotFoundf(format string, args ...interface{}) error {
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return Errorf(format+" not found", args...)
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}
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// BadRequestf represents an error with bad request message.
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func BadRequestf(format string, args ...interface{}) error {
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return Errorf(format+" bad request", args...)
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}
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// NotSupportedf represents an error with not supported message.
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func NotSupportedf(format string, args ...interface{}) error {
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return Errorf(format+" not supported", args...)
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}
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// NotValidf represents an error with not valid message.
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func NotValidf(format string, args ...interface{}) error {
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return Errorf(format+" not valid", args...)
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}
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// IsAlreadyExists reports whether err was already exists error.
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func IsAlreadyExists(err error) bool {
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return strings.Contains(err.Error(), "already exists")
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}
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// AlreadyExistsf represents an error with already exists message.
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func AlreadyExistsf(format string, args ...interface{}) error {
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return Errorf(format+" already exists", args...)
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}
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// ==================== juju adaptor end ========================
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