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unimplemented_error.go
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unimplemented_error.go
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// Copyright 2019 The Cockroach 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 issuelink
import (
"bytes"
"fmt"
"github.com/cockroachdb/errors/errbase"
"github.com/gogo/protobuf/proto"
)
type unimplementedError struct {
msg string
IssueLink
}
func (w *unimplementedError) Error() string { return w.msg }
func (w *unimplementedError) SafeDetails() []string {
return []string{w.IssueURL, w.Detail}
}
// ErrorHint implements the hintdetail.ErrorHinter interface.
func (w *unimplementedError) ErrorHint() string {
var hintText bytes.Buffer
hintText.WriteString(UnimplementedErrorHint)
maybeAppendReferral(&hintText, w.IssueLink)
return hintText.String()
}
// UnimplementedErrorHint is the hint emitted upon unimplemented errors.
const UnimplementedErrorHint = `You have attempted to use a feature that is not yet implemented.`
func (w *unimplementedError) Format(s fmt.State, verb rune) {
switch verb {
case 'v':
if s.Flag('+') {
fmt.Fprintf(s, "%s", w.msg)
if w.IssueURL != "" {
fmt.Fprintf(s, "\n-- issue: %s", w.IssueURL)
}
if w.Detail != "" {
fmt.Fprintf(s, "\n-- detail: %s", w.Detail)
}
return
}
fallthrough
case 's', 'q':
fmt.Fprintf(s, fmt.Sprintf("%%%c", verb), w.msg)
}
}
func decodeUnimplementedError(msg string, details []string, _ proto.Message) error {
var issueLink IssueLink
if len(details) > 0 {
issueLink.IssueURL = details[0]
}
if len(details) > 1 {
issueLink.Detail = details[1]
}
return &unimplementedError{msg: msg, IssueLink: issueLink}
}
func init() {
errbase.RegisterLeafDecoder(errbase.GetTypeKey(&unimplementedError{}), decodeUnimplementedError)
}