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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
package errors
import (
"errors"
"fmt"
"io"
"net/http"
"reflect"
"strings"
"github.com/kylelemons/godebug/pretty"
)
var prettyConf = &pretty.Config{
IncludeUnexported: false,
SkipZeroFields: true,
TrackCycles: true,
Formatter: map[reflect.Type]interface{}{
reflect.TypeOf((*io.Reader)(nil)).Elem(): func(r io.Reader) string {
b, err := io.ReadAll(r)
if err != nil {
return "could not read io.Reader content"
}
return string(b)
},
},
}
type verboser interface {
Verbose() string
}
// Verbose prints the most verbose error that the error message has.
func Verbose(err error) string {
build := strings.Builder{}
for {
if err == nil {
break
}
if v, ok := err.(verboser); ok {
build.WriteString(v.Verbose())
} else {
build.WriteString(err.Error())
}
err = errors.Unwrap(err)
}
return build.String()
}
// New is equivalent to errors.New().
func New(text string) error {
return errors.New(text)
}
// CallErr represents an HTTP call error. Has a Verbose() method that allows getting the
// http.Request and Response objects. Implements error.
type CallErr struct {
Req *http.Request
// Resp contains response body
Resp *http.Response
Err error
}
// Errors implements error.Error().
func (e CallErr) Error() string {
return e.Err.Error()
}
// Verbose prints a versbose error message with the request or response.
func (e CallErr) Verbose() string {
e.Resp.Request = nil // This brings in a bunch of TLS crap we don't need
e.Resp.TLS = nil // Same
return fmt.Sprintf("%s:\nRequest:\n%s\nResponse:\n%s", e.Err, prettyConf.Sprint(e.Req), prettyConf.Sprint(e.Resp))
}
// Is reports whether any error in errors chain matches target.
func Is(err, target error) bool {
return errors.Is(err, target)
}
// As finds the first error in errors chain that matches target,
// and if so, sets target to that error value and returns true.
// Otherwise, it returns false.
func As(err error, target interface{}) bool {
return errors.As(err, target)
}
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