mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-14 01:24:04 -08:00
b1e4956142
Essentially: - Remove unused code. - Make it 'go vet' clean. The only remaining warnings are in generated code. - Make it 'golint' clean. The only remaining warnings are in gerenated code. - Smoothed out same minor things. Change-Id: I3fe5c1fbead27b0e7a9c247fee2f5a45bc2d42c6
122 lines
2.7 KiB
Go
122 lines
2.7 KiB
Go
// Copyright 2013 Prometheus Team
|
|
// 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 test
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"os"
|
|
)
|
|
|
|
const (
|
|
// The base directory used for test emissions, which instructs the operating
|
|
// system to use the default temporary directory as the base or TMPDIR
|
|
// environment variable.
|
|
defaultDirectory = ""
|
|
|
|
// NilCloser is a no-op Closer.
|
|
NilCloser = nilCloser(true)
|
|
)
|
|
|
|
type (
|
|
// Closer is the interface that wraps the Close method.
|
|
Closer interface {
|
|
// Close reaps the underlying directory and its children. The directory
|
|
// could be deleted by its users already.
|
|
Close()
|
|
}
|
|
|
|
nilCloser bool
|
|
|
|
// TemporaryDirectory models a closeable path for transient POSIX disk
|
|
// activities.
|
|
TemporaryDirectory interface {
|
|
Closer
|
|
|
|
// Path returns the underlying path for access.
|
|
Path() string
|
|
}
|
|
|
|
// temporaryDirectory is kept as a private type due to private fields and
|
|
// their interactions.
|
|
temporaryDirectory struct {
|
|
path string
|
|
tester T
|
|
}
|
|
|
|
callbackCloser struct {
|
|
fn func()
|
|
}
|
|
|
|
// T implements the needed methods of testing.TB so that we do not need
|
|
// to actually import testing (which has the side affect of adding all
|
|
// the test flags, which we do not want in non-test binaries even if
|
|
// they make use of these utilities for some reason).
|
|
T interface {
|
|
Fatal(args ...interface{})
|
|
Fatalf(format string, args ...interface{})
|
|
}
|
|
)
|
|
|
|
func (c nilCloser) Close() {
|
|
}
|
|
|
|
func (c callbackCloser) Close() {
|
|
c.fn()
|
|
}
|
|
|
|
// NewCallbackCloser returns a Closer that calls the provided function upon
|
|
// closing.
|
|
func NewCallbackCloser(fn func()) *callbackCloser {
|
|
return &callbackCloser{
|
|
fn: fn,
|
|
}
|
|
}
|
|
|
|
func (t temporaryDirectory) Close() {
|
|
err := os.RemoveAll(t.path)
|
|
if err != nil {
|
|
switch {
|
|
case os.IsNotExist(err):
|
|
return
|
|
default:
|
|
t.tester.Fatal(err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (t temporaryDirectory) Path() string {
|
|
return t.path
|
|
}
|
|
|
|
// NewTemporaryDirectory creates a new temporary directory for transient POSIX
|
|
// activities.
|
|
func NewTemporaryDirectory(name string, t T) (handler TemporaryDirectory) {
|
|
var (
|
|
directory string
|
|
err error
|
|
)
|
|
|
|
directory, err = ioutil.TempDir(defaultDirectory, name)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
handler = temporaryDirectory{
|
|
path: directory,
|
|
tester: t,
|
|
}
|
|
|
|
return
|
|
}
|