817 lines
18 KiB
Go
817 lines
18 KiB
Go
package lumberjack
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import (
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"bytes"
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"compress/gzip"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/BurntSushi/toml"
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"gopkg.in/yaml.v2"
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)
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// !!!NOTE!!!
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//
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// Running these tests in parallel will almost certainly cause sporadic (or even
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// regular) failures, because they're all messing with the same global variable
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// that controls the logic's mocked time.Now. So... don't do that.
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// Since all the tests uses the time to determine filenames etc, we need to
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// control the wall clock as much as possible, which means having a wall clock
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// that doesn't change unless we want it to.
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var fakeCurrentTime = time.Now()
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func fakeTime() time.Time {
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return fakeCurrentTime
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}
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func TestNewFile(t *testing.T) {
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currentTime = fakeTime
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dir := makeTempDir("TestNewFile", t)
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defer os.RemoveAll(dir)
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l := &Logger{
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Filename: logFile(dir),
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}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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existsWithContent(logFile(dir), b, t)
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fileCount(dir, 1, t)
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}
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func TestOpenExisting(t *testing.T) {
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currentTime = fakeTime
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dir := makeTempDir("TestOpenExisting", t)
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defer os.RemoveAll(dir)
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filename := logFile(dir)
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data := []byte("foo!")
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err := ioutil.WriteFile(filename, data, 0644)
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isNil(err, t)
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existsWithContent(filename, data, t)
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l := &Logger{
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Filename: filename,
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}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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// make sure the file got appended
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existsWithContent(filename, append(data, b...), t)
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// make sure no other files were created
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fileCount(dir, 1, t)
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}
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func TestWriteTooLong(t *testing.T) {
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currentTime = fakeTime
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megabyte = 1
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dir := makeTempDir("TestWriteTooLong", t)
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defer os.RemoveAll(dir)
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l := &Logger{
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Filename: logFile(dir),
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MaxSize: 5,
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}
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defer l.Close()
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b := []byte("booooooooooooooo!")
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n, err := l.Write(b)
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notNil(err, t)
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equals(0, n, t)
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equals(err.Error(),
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fmt.Sprintf("write length %d exceeds maximum file size %d", len(b), l.MaxSize), t)
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_, err = os.Stat(logFile(dir))
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assert(os.IsNotExist(err), t, "File exists, but should not have been created")
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}
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func TestMakeLogDir(t *testing.T) {
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currentTime = fakeTime
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dir := time.Now().Format("TestMakeLogDir" + backupTimeFormat)
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dir = filepath.Join(os.TempDir(), dir)
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defer os.RemoveAll(dir)
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filename := logFile(dir)
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l := &Logger{
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Filename: filename,
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}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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existsWithContent(logFile(dir), b, t)
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fileCount(dir, 1, t)
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}
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func TestDefaultFilename(t *testing.T) {
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currentTime = fakeTime
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dir := os.TempDir()
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filename := filepath.Join(dir, filepath.Base(os.Args[0])+"-lumberjack.log")
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defer os.Remove(filename)
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l := &Logger{}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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existsWithContent(filename, b, t)
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}
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func TestAutoRotate(t *testing.T) {
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currentTime = fakeTime
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megabyte = 1
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dir := makeTempDir("TestAutoRotate", t)
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defer os.RemoveAll(dir)
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filename := logFile(dir)
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l := &Logger{
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Filename: filename,
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MaxSize: 10,
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}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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existsWithContent(filename, b, t)
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fileCount(dir, 1, t)
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newFakeTime()
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b2 := []byte("foooooo!")
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n, err = l.Write(b2)
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isNil(err, t)
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equals(len(b2), n, t)
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// the old logfile should be moved aside and the main logfile should have
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// only the last write in it.
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existsWithContent(filename, b2, t)
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// the backup file will use the current fake time and have the old contents.
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existsWithContent(backupFile(dir), b, t)
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fileCount(dir, 2, t)
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}
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func TestFirstWriteRotate(t *testing.T) {
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currentTime = fakeTime
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megabyte = 1
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dir := makeTempDir("TestFirstWriteRotate", t)
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defer os.RemoveAll(dir)
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filename := logFile(dir)
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l := &Logger{
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Filename: filename,
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MaxSize: 10,
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}
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defer l.Close()
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start := []byte("boooooo!")
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err := ioutil.WriteFile(filename, start, 0600)
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isNil(err, t)
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newFakeTime()
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// this would make us rotate
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b := []byte("fooo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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existsWithContent(filename, b, t)
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existsWithContent(backupFile(dir), start, t)
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fileCount(dir, 2, t)
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}
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func TestMaxBackups(t *testing.T) {
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currentTime = fakeTime
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megabyte = 1
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dir := makeTempDir("TestMaxBackups", t)
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defer os.RemoveAll(dir)
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filename := logFile(dir)
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l := &Logger{
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Filename: filename,
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MaxSize: 10,
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MaxBackups: 1,
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}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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existsWithContent(filename, b, t)
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fileCount(dir, 1, t)
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newFakeTime()
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// this will put us over the max
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b2 := []byte("foooooo!")
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n, err = l.Write(b2)
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isNil(err, t)
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equals(len(b2), n, t)
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// this will use the new fake time
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secondFilename := backupFile(dir)
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existsWithContent(secondFilename, b, t)
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// make sure the old file still exists with the same content.
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existsWithContent(filename, b2, t)
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fileCount(dir, 2, t)
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newFakeTime()
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// this will make us rotate again
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b3 := []byte("baaaaaar!")
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n, err = l.Write(b3)
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isNil(err, t)
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equals(len(b3), n, t)
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// this will use the new fake time
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thirdFilename := backupFile(dir)
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existsWithContent(thirdFilename, b2, t)
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existsWithContent(filename, b3, t)
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// we need to wait a little bit since the files get deleted on a different
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// goroutine.
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<-time.After(time.Millisecond * 10)
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// should only have two files in the dir still
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fileCount(dir, 2, t)
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// second file name should still exist
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existsWithContent(thirdFilename, b2, t)
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// should have deleted the first backup
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notExist(secondFilename, t)
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// now test that we don't delete directories or non-logfile files
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newFakeTime()
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// create a file that is close to but different from the logfile name.
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// It shouldn't get caught by our deletion filters.
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notlogfile := logFile(dir) + ".foo"
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err = ioutil.WriteFile(notlogfile, []byte("data"), 0644)
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isNil(err, t)
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// Make a directory that exactly matches our log file filters... it still
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// shouldn't get caught by the deletion filter since it's a directory.
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notlogfiledir := backupFile(dir)
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err = os.Mkdir(notlogfiledir, 0700)
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isNil(err, t)
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newFakeTime()
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// this will use the new fake time
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fourthFilename := backupFile(dir)
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// Create a log file that is/was being compressed - this should
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// not be counted since both the compressed and the uncompressed
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// log files still exist.
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compLogFile := fourthFilename+compressSuffix
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err = ioutil.WriteFile(compLogFile, []byte("compress"), 0644)
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isNil(err, t)
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// this will make us rotate again
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b4 := []byte("baaaaaaz!")
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n, err = l.Write(b4)
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isNil(err, t)
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equals(len(b4), n, t)
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existsWithContent(fourthFilename, b3, t)
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existsWithContent(fourthFilename+compressSuffix, []byte("compress"), t)
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// we need to wait a little bit since the files get deleted on a different
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// goroutine.
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<-time.After(time.Millisecond * 10)
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// We should have four things in the directory now - the 2 log files, the
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// not log file, and the directory
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fileCount(dir, 5, t)
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// third file name should still exist
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existsWithContent(filename, b4, t)
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existsWithContent(fourthFilename, b3, t)
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// should have deleted the first filename
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notExist(thirdFilename, t)
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// the not-a-logfile should still exist
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exists(notlogfile, t)
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// the directory
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exists(notlogfiledir, t)
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}
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func TestCleanupExistingBackups(t *testing.T) {
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// test that if we start with more backup files than we're supposed to have
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// in total, that extra ones get cleaned up when we rotate.
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currentTime = fakeTime
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megabyte = 1
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dir := makeTempDir("TestCleanupExistingBackups", t)
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defer os.RemoveAll(dir)
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// make 3 backup files
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data := []byte("data")
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backup := backupFile(dir)
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err := ioutil.WriteFile(backup, data, 0644)
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isNil(err, t)
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newFakeTime()
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backup = backupFile(dir)
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err = ioutil.WriteFile(backup+compressSuffix, data, 0644)
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isNil(err, t)
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newFakeTime()
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backup = backupFile(dir)
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err = ioutil.WriteFile(backup, data, 0644)
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isNil(err, t)
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// now create a primary log file with some data
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filename := logFile(dir)
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err = ioutil.WriteFile(filename, data, 0644)
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isNil(err, t)
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l := &Logger{
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Filename: filename,
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MaxSize: 10,
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MaxBackups: 1,
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}
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defer l.Close()
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newFakeTime()
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b2 := []byte("foooooo!")
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n, err := l.Write(b2)
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isNil(err, t)
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equals(len(b2), n, t)
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// we need to wait a little bit since the files get deleted on a different
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// goroutine.
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<-time.After(time.Millisecond * 10)
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// now we should only have 2 files left - the primary and one backup
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fileCount(dir, 2, t)
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}
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func TestMaxAge(t *testing.T) {
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currentTime = fakeTime
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megabyte = 1
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dir := makeTempDir("TestMaxAge", t)
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defer os.RemoveAll(dir)
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filename := logFile(dir)
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l := &Logger{
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Filename: filename,
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MaxSize: 10,
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MaxAge: 1,
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}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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existsWithContent(filename, b, t)
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fileCount(dir, 1, t)
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// two days later
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newFakeTime()
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b2 := []byte("foooooo!")
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n, err = l.Write(b2)
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isNil(err, t)
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equals(len(b2), n, t)
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existsWithContent(backupFile(dir), b, t)
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// we need to wait a little bit since the files get deleted on a different
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// goroutine.
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<-time.After(10 * time.Millisecond)
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// We should still have 2 log files, since the most recent backup was just
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// created.
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fileCount(dir, 2, t)
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existsWithContent(filename, b2, t)
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// we should have deleted the old file due to being too old
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existsWithContent(backupFile(dir), b, t)
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// two days later
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newFakeTime()
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b3 := []byte("baaaaar!")
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n, err = l.Write(b3)
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isNil(err, t)
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equals(len(b3), n, t)
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existsWithContent(backupFile(dir), b2, t)
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// we need to wait a little bit since the files get deleted on a different
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// goroutine.
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<-time.After(10 * time.Millisecond)
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// We should have 2 log files - the main log file, and the most recent
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// backup. The earlier backup is past the cutoff and should be gone.
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fileCount(dir, 2, t)
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existsWithContent(filename, b3, t)
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// we should have deleted the old file due to being too old
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existsWithContent(backupFile(dir), b2, t)
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}
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func TestOldLogFiles(t *testing.T) {
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currentTime = fakeTime
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megabyte = 1
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dir := makeTempDir("TestOldLogFiles", t)
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defer os.RemoveAll(dir)
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filename := logFile(dir)
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data := []byte("data")
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err := ioutil.WriteFile(filename, data, 07)
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isNil(err, t)
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// This gives us a time with the same precision as the time we get from the
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// timestamp in the name.
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t1, err := time.Parse(backupTimeFormat, fakeTime().UTC().Format(backupTimeFormat))
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isNil(err, t)
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backup := backupFile(dir)
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err = ioutil.WriteFile(backup, data, 07)
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isNil(err, t)
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newFakeTime()
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t2, err := time.Parse(backupTimeFormat, fakeTime().UTC().Format(backupTimeFormat))
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isNil(err, t)
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backup2 := backupFile(dir)
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err = ioutil.WriteFile(backup2, data, 07)
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isNil(err, t)
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l := &Logger{Filename: filename}
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files, err := l.oldLogFiles()
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isNil(err, t)
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equals(2, len(files), t)
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// should be sorted by newest file first, which would be t2
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equals(t2, files[0].timestamp, t)
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equals(t1, files[1].timestamp, t)
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}
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func TestTimeFromName(t *testing.T) {
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l := &Logger{Filename: "/var/log/myfoo/foo.log"}
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prefix, ext := l.prefixAndExt()
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tests := []struct {
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filename string
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want time.Time
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wantErr bool
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}{
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{"foo-2014-05-04T14-44-33.555.log", time.Date(2014, 5, 4, 14, 44, 33, 555000000, time.UTC), false},
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{"foo-2014-05-04T14-44-33.555", time.Time{}, true},
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{"2014-05-04T14-44-33.555.log", time.Time{}, true},
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{"foo.log", time.Time{}, true},
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}
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for _, test := range tests {
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got, err := l.timeFromName(test.filename, prefix, ext)
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equals(got, test.want, t)
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equals(err != nil, test.wantErr, t)
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}
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}
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func TestLocalTime(t *testing.T) {
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currentTime = fakeTime
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megabyte = 1
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dir := makeTempDir("TestLocalTime", t)
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defer os.RemoveAll(dir)
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l := &Logger{
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Filename: logFile(dir),
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MaxSize: 10,
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LocalTime: true,
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}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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b2 := []byte("fooooooo!")
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n2, err := l.Write(b2)
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isNil(err, t)
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equals(len(b2), n2, t)
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existsWithContent(logFile(dir), b2, t)
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existsWithContent(backupFileLocal(dir), b, t)
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}
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func TestRotate(t *testing.T) {
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currentTime = fakeTime
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dir := makeTempDir("TestRotate", t)
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defer os.RemoveAll(dir)
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filename := logFile(dir)
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l := &Logger{
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Filename: filename,
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MaxBackups: 1,
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MaxSize: 100, // megabytes
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}
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defer l.Close()
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b := []byte("boo!")
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n, err := l.Write(b)
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isNil(err, t)
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equals(len(b), n, t)
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existsWithContent(filename, b, t)
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fileCount(dir, 1, t)
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newFakeTime()
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err = l.Rotate()
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isNil(err, t)
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// we need to wait a little bit since the files get deleted on a different
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|
// goroutine.
|
|
<-time.After(10 * time.Millisecond)
|
|
|
|
filename2 := backupFile(dir)
|
|
existsWithContent(filename2, b, t)
|
|
existsWithContent(filename, []byte{}, t)
|
|
fileCount(dir, 2, t)
|
|
newFakeTime()
|
|
|
|
err = l.Rotate()
|
|
isNil(err, t)
|
|
|
|
// we need to wait a little bit since the files get deleted on a different
|
|
// goroutine.
|
|
<-time.After(10 * time.Millisecond)
|
|
|
|
filename3 := backupFile(dir)
|
|
existsWithContent(filename3, []byte{}, t)
|
|
existsWithContent(filename, []byte{}, t)
|
|
fileCount(dir, 2, t)
|
|
|
|
b2 := []byte("foooooo!")
|
|
n, err = l.Write(b2)
|
|
isNil(err, t)
|
|
equals(len(b2), n, t)
|
|
|
|
// this will use the new fake time
|
|
existsWithContent(filename, b2, t)
|
|
}
|
|
|
|
func TestCompressOnRotate(t *testing.T) {
|
|
currentTime = fakeTime
|
|
megabyte = 1
|
|
|
|
dir := makeTempDir("TestCompressOnRotate", t)
|
|
defer os.RemoveAll(dir)
|
|
|
|
filename := logFile(dir)
|
|
l := &Logger{
|
|
Compress: true,
|
|
Filename: filename,
|
|
MaxSize: 10,
|
|
}
|
|
defer l.Close()
|
|
b := []byte("boo!")
|
|
n, err := l.Write(b)
|
|
isNil(err, t)
|
|
equals(len(b), n, t)
|
|
|
|
existsWithContent(filename, b, t)
|
|
fileCount(dir, 1, t)
|
|
|
|
newFakeTime()
|
|
|
|
err = l.Rotate()
|
|
isNil(err, t)
|
|
|
|
// the old logfile should be moved aside and the main logfile should have
|
|
// nothing in it.
|
|
existsWithContent(filename, []byte{}, t)
|
|
|
|
// we need to wait a little bit since the files get compressed on a different
|
|
// goroutine.
|
|
<-time.After(10 * time.Millisecond)
|
|
|
|
// a compressed version of the log file should now exist and the original
|
|
// should have been removed.
|
|
bc := new(bytes.Buffer)
|
|
gz := gzip.NewWriter(bc)
|
|
_, err = gz.Write(b)
|
|
isNil(err, t)
|
|
err = gz.Close()
|
|
isNil(err, t)
|
|
existsWithContent(backupFile(dir)+compressSuffix, bc.Bytes(), t)
|
|
notExist(backupFile(dir), t)
|
|
|
|
fileCount(dir, 2, t)
|
|
}
|
|
|
|
func TestCompressOnResume(t *testing.T) {
|
|
currentTime = fakeTime
|
|
megabyte = 1
|
|
|
|
dir := makeTempDir("TestCompressOnResume", t)
|
|
defer os.RemoveAll(dir)
|
|
|
|
filename := logFile(dir)
|
|
l := &Logger{
|
|
Compress: true,
|
|
Filename: filename,
|
|
MaxSize: 10,
|
|
}
|
|
defer l.Close()
|
|
|
|
// Create a backup file and empty "compressed" file.
|
|
filename2 := backupFile(dir)
|
|
b := []byte("foo!")
|
|
err := ioutil.WriteFile(filename2, b, 0644)
|
|
isNil(err, t)
|
|
err = ioutil.WriteFile(filename2+compressSuffix, []byte{}, 0644)
|
|
isNil(err, t)
|
|
|
|
newFakeTime()
|
|
|
|
b2 := []byte("boo!")
|
|
n, err := l.Write(b2)
|
|
isNil(err, t)
|
|
equals(len(b2), n, t)
|
|
existsWithContent(filename, b2, t)
|
|
|
|
// we need to wait a little bit since the files get compressed on a different
|
|
// goroutine.
|
|
<-time.After(10 * time.Millisecond)
|
|
|
|
// The write should have started the compression - a compressed version of
|
|
// the log file should now exist and the original should have been removed.
|
|
bc := new(bytes.Buffer)
|
|
gz := gzip.NewWriter(bc)
|
|
_, err = gz.Write(b)
|
|
isNil(err, t)
|
|
err = gz.Close()
|
|
isNil(err, t)
|
|
existsWithContent(filename2+compressSuffix, bc.Bytes(), t)
|
|
notExist(filename2, t)
|
|
|
|
fileCount(dir, 2, t)
|
|
}
|
|
|
|
func TestJson(t *testing.T) {
|
|
data := []byte(`
|
|
{
|
|
"filename": "foo",
|
|
"maxsize": 5,
|
|
"maxage": 10,
|
|
"maxbackups": 3,
|
|
"localtime": true,
|
|
"compress": true
|
|
}`[1:])
|
|
|
|
l := Logger{}
|
|
err := json.Unmarshal(data, &l)
|
|
isNil(err, t)
|
|
equals("foo", l.Filename, t)
|
|
equals(5, l.MaxSize, t)
|
|
equals(10, l.MaxAge, t)
|
|
equals(3, l.MaxBackups, t)
|
|
equals(true, l.LocalTime, t)
|
|
equals(true, l.Compress, t)
|
|
}
|
|
|
|
func TestYaml(t *testing.T) {
|
|
data := []byte(`
|
|
filename: foo
|
|
maxsize: 5
|
|
maxage: 10
|
|
maxbackups: 3
|
|
localtime: true
|
|
compress: true`[1:])
|
|
|
|
l := Logger{}
|
|
err := yaml.Unmarshal(data, &l)
|
|
isNil(err, t)
|
|
equals("foo", l.Filename, t)
|
|
equals(5, l.MaxSize, t)
|
|
equals(10, l.MaxAge, t)
|
|
equals(3, l.MaxBackups, t)
|
|
equals(true, l.LocalTime, t)
|
|
equals(true, l.Compress, t)
|
|
}
|
|
|
|
func TestToml(t *testing.T) {
|
|
data := `
|
|
filename = "foo"
|
|
maxsize = 5
|
|
maxage = 10
|
|
maxbackups = 3
|
|
localtime = true
|
|
compress = true`[1:]
|
|
|
|
l := Logger{}
|
|
md, err := toml.Decode(data, &l)
|
|
isNil(err, t)
|
|
equals("foo", l.Filename, t)
|
|
equals(5, l.MaxSize, t)
|
|
equals(10, l.MaxAge, t)
|
|
equals(3, l.MaxBackups, t)
|
|
equals(true, l.LocalTime, t)
|
|
equals(true, l.Compress, t)
|
|
equals(0, len(md.Undecoded()), t)
|
|
}
|
|
|
|
// makeTempDir creates a file with a semi-unique name in the OS temp directory.
|
|
// It should be based on the name of the test, to keep parallel tests from
|
|
// colliding, and must be cleaned up after the test is finished.
|
|
func makeTempDir(name string, t testing.TB) string {
|
|
dir := time.Now().Format(name + backupTimeFormat)
|
|
dir = filepath.Join(os.TempDir(), dir)
|
|
isNilUp(os.Mkdir(dir, 0700), t, 1)
|
|
return dir
|
|
}
|
|
|
|
// existsWithContent checks that the given file exists and has the correct content.
|
|
func existsWithContent(path string, content []byte, t testing.TB) {
|
|
info, err := os.Stat(path)
|
|
isNilUp(err, t, 1)
|
|
equalsUp(int64(len(content)), info.Size(), t, 1)
|
|
|
|
b, err := ioutil.ReadFile(path)
|
|
isNilUp(err, t, 1)
|
|
equalsUp(content, b, t, 1)
|
|
}
|
|
|
|
// logFile returns the log file name in the given directory for the current fake
|
|
// time.
|
|
func logFile(dir string) string {
|
|
return filepath.Join(dir, "foobar.log")
|
|
}
|
|
|
|
func backupFile(dir string) string {
|
|
return filepath.Join(dir, "foobar-"+fakeTime().UTC().Format(backupTimeFormat)+".log")
|
|
}
|
|
|
|
func backupFileLocal(dir string) string {
|
|
return filepath.Join(dir, "foobar-"+fakeTime().Format(backupTimeFormat)+".log")
|
|
}
|
|
|
|
// logFileLocal returns the log file name in the given directory for the current
|
|
// fake time using the local timezone.
|
|
func logFileLocal(dir string) string {
|
|
return filepath.Join(dir, fakeTime().Format(backupTimeFormat))
|
|
}
|
|
|
|
// fileCount checks that the number of files in the directory is exp.
|
|
func fileCount(dir string, exp int, t testing.TB) {
|
|
files, err := ioutil.ReadDir(dir)
|
|
isNilUp(err, t, 1)
|
|
// Make sure no other files were created.
|
|
equalsUp(exp, len(files), t, 1)
|
|
}
|
|
|
|
// newFakeTime sets the fake "current time" to two days later.
|
|
func newFakeTime() {
|
|
fakeCurrentTime = fakeCurrentTime.Add(time.Hour * 24 * 2)
|
|
}
|
|
|
|
func notExist(path string, t testing.TB) {
|
|
_, err := os.Stat(path)
|
|
assertUp(os.IsNotExist(err), t, 1, "expected to get os.IsNotExist, but instead got %v", err)
|
|
}
|
|
|
|
func exists(path string, t testing.TB) {
|
|
_, err := os.Stat(path)
|
|
assertUp(err == nil, t, 1, "expected file to exist, but got error from os.Stat: %v", err)
|
|
}
|