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go
beego
Commits
5511e03b
Commit
5511e03b
authored
Jan 12, 2016
by
JessonChan
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embedding file writer
parent
9507e59c
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1 changed file
with
33 additions
and
34 deletions
+33
-34
file.go
logs/file.go
+33
-34
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logs/file.go
View file @
5511e03b
...
...
@@ -32,32 +32,32 @@ import (
// It writes messages by lines limit, file size limit, or time frequency.
type
fileLogWriter
struct
{
*
log
.
Logger
mw
*
MuxWriter
*
MuxWriter
// The opened file
Filename
string
`json:"filename"`
Filename
string
`json:"filename"`
MaxLines
int
`json:"maxlines"`
maxLinesCurLines
int
// Rotate at size
MaxSize
int
`json:"maxsize"`
maxSizeCurSize
int
MaxSize
int
`json:"maxsize"`
maxSizeCurSize
int
// Rotate daily
Daily
bool
`json:"daily"`
MaxDays
int64
`json:"maxdays"`
dailyOpenDate
int
Daily
bool
`json:"daily"`
MaxDays
int64
`json:"maxdays"`
dailyOpenDate
int
Rotate
bool
`json:"rotate"`
Rotate
bool
`json:"rotate"`
startLock
sync
.
Mutex
// Only one log can write to the file
startLock
sync
.
Mutex
// Only one log can write to the file
Level
int
`json:"level"`
Level
int
`json:"level"`
Perm
os
.
FileMode
`json:"perm"`
Perm
os
.
FileMode
`json:"perm"`
}
// MuxWriter is an *os.File writer with locker
.
// MuxWriter is an *os.File writer with locker
,lock write when rotate
type
MuxWriter
struct
{
sync
.
Mutex
fd
*
os
.
File
...
...
@@ -81,19 +81,18 @@ func (l *MuxWriter) SetFd(fd *os.File) {
// NewFileWriter create a FileLogWriter returning as LoggerInterface.
func
newFileWriter
()
Logger
{
w
:=
&
fileLogWriter
{
Filename
:
""
,
MaxLines
:
1000000
,
MaxSize
:
1
<<
28
,
//256 MB
Daily
:
true
,
MaxDays
:
7
,
Rotate
:
true
,
Level
:
LevelTrace
,
Perm
:
0660
,
Filename
:
""
,
MaxLines
:
1000000
,
MaxSize
:
1
<<
28
,
//256 MB
Daily
:
true
,
MaxDays
:
7
,
Rotate
:
true
,
Level
:
LevelTrace
,
Perm
:
0660
,
MuxWriter
:
new
(
MuxWriter
),
}
// use MuxWriter instead direct use os.File for lock write when rotate
w
.
mw
=
new
(
MuxWriter
)
// set MuxWriter as Logger's io.Writer
w
.
Logger
=
log
.
New
(
w
.
mw
,
""
,
log
.
Ldate
|
log
.
Ltime
)
w
.
Logger
=
log
.
New
(
w
,
""
,
log
.
Ldate
|
log
.
Ltime
)
return
w
}
...
...
@@ -126,7 +125,7 @@ func (w *fileLogWriter) startLogger() error {
if
err
!=
nil
{
return
err
}
w
.
mw
.
SetFd
(
fd
)
w
.
SetFd
(
fd
)
return
w
.
initFd
()
}
...
...
@@ -163,7 +162,7 @@ func (w *fileLogWriter) createLogFile() (*os.File, error) {
}
func
(
w
*
fileLogWriter
)
initFd
()
error
{
fd
:=
w
.
mw
.
fd
fd
:=
w
.
fd
finfo
,
err
:=
fd
.
Stat
()
if
err
!=
nil
{
return
fmt
.
Errorf
(
"get stat err: %s
\n
"
,
err
)
...
...
@@ -215,15 +214,15 @@ func (w *fileLogWriter) DoRotate() error {
if
err
==
nil
{
// file exists
// Find the next available number
num
:=
1
f
n
ame
:=
""
f
N
ame
:=
""
suffix
:=
filepath
.
Ext
(
w
.
Filename
)
filenameOnly
:=
strings
.
TrimSuffix
(
w
.
Filename
,
suffix
)
if
suffix
==
""
{
suffix
=
".log"
}
for
;
err
==
nil
&&
num
<=
999
;
num
++
{
f
n
ame
=
filenameOnly
+
fmt
.
Sprintf
(
".%s.%03d%s"
,
time
.
Now
()
.
Format
(
"2006-01-02"
),
num
,
suffix
)
_
,
err
=
os
.
Lstat
(
f
n
ame
)
f
N
ame
=
filenameOnly
+
fmt
.
Sprintf
(
".%s.%03d%s"
,
time
.
Now
()
.
Format
(
"2006-01-02"
),
num
,
suffix
)
_
,
err
=
os
.
Lstat
(
f
N
ame
)
}
// return error if the last file checked still existed
if
err
==
nil
{
...
...
@@ -231,15 +230,15 @@ func (w *fileLogWriter) DoRotate() error {
}
// block Logger's io.Writer
w
.
mw
.
Lock
()
defer
w
.
mw
.
Unlock
()
w
.
Lock
()
defer
w
.
Unlock
()
fd
:=
w
.
mw
.
fd
fd
:=
w
.
fd
fd
.
Close
()
// close fd before rename
// Rename the file to its newfound home
err
=
os
.
Rename
(
w
.
Filename
,
f
n
ame
)
err
=
os
.
Rename
(
w
.
Filename
,
f
N
ame
)
if
err
!=
nil
{
return
fmt
.
Errorf
(
"Rotate: %s
\n
"
,
err
)
}
...
...
@@ -277,14 +276,14 @@ func (w *fileLogWriter) deleteOldLog() {
// Destroy close the file description, close file writer.
func
(
w
*
fileLogWriter
)
Destroy
()
{
w
.
mw
.
fd
.
Close
()
w
.
fd
.
Close
()
}
// Flush flush file logger.
// there are no buffering messages in file logger in memory.
// flush file means sync file from disk.
func
(
w
*
fileLogWriter
)
Flush
()
{
w
.
mw
.
fd
.
Sync
()
w
.
fd
.
Sync
()
}
func
init
()
{
...
...
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