prometheus/errors/errors.go
Krasi Georgiev c3ffdf1a99
Test createBlock and check all os.RemoveAll in the tests for errors. ()
Testing that createBlock creates blocks that can be opened.

and checking the os.RemoveAll for errors will catch errors for un-closed files under windows.

Many missing .Close() calls were added for fixing failing os.RemoveAll

Signed-off-by: Krasi Georgiev <kgeorgie@redhat.com>
2019-03-19 15:31:57 +02:00

63 lines
1.4 KiB
Go

// Copyright 2016 The etcd 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 errors
import (
"bytes"
"fmt"
)
// The MultiError type implements the error interface, and contains the
// Errors used to construct it.
type MultiError []error
// Returns a concatenated string of the contained errors
func (es MultiError) Error() string {
var buf bytes.Buffer
if len(es) > 1 {
fmt.Fprintf(&buf, "%d errors: ", len(es))
}
for i, err := range es {
if i != 0 {
buf.WriteString("; ")
}
buf.WriteString(err.Error())
}
return buf.String()
}
// Add adds the error to the error list if it is not nil.
func (es *MultiError) Add(err error) {
if err == nil {
return
}
if merr, ok := err.(MultiError); ok {
*es = append(*es, merr...)
} else {
*es = append(*es, err)
}
}
// Err returns the error list as an error or nil if it is empty.
func (es MultiError) Err() error {
if len(es) == 0 {
return nil
}
return es
}