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go
beego
Commits
73d45b15
Commit
73d45b15
authored
Jun 24, 2013
by
astaxie
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log support file & logrotate
parent
c5a23d5c
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154 additions
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4 deletions
+154
-4
log.go
log.go
+154
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log.go
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73d45b15
package
beego
import
(
"fmt"
"io/ioutil"
"log"
"os"
"path"
"path/filepath"
"strings"
"sync"
"time"
)
//--------------------
// LOG LEVEL
//--------------------
type
FileLogWriter
struct
{
*
log
.
Logger
// The opened file
filename
string
maxlines
int
maxlines_curlines
int
// Rotate at size
maxsize
int
maxsize_cursize
int
// Rotate daily
daily
bool
maxday
int64
daily_opendate
int
rotate
bool
startLock
sync
.
Mutex
//only one log can writer to the file
}
func
NewFileWriter
(
fname
string
,
rotate
bool
)
*
FileLogWriter
{
w
:=
&
FileLogWriter
{
filename
:
fname
,
maxlines
:
1000000
,
maxsize
:
1
<<
28
,
//256 MB
daily
:
true
,
maxday
:
7
,
rotate
:
rotate
,
}
return
w
}
func
(
w
*
FileLogWriter
)
StartLogger
()
error
{
if
err
:=
w
.
DoRotate
(
false
);
err
!=
nil
{
return
err
}
return
nil
}
func
(
w
*
FileLogWriter
)
docheck
(
size
int
)
{
w
.
startLock
.
Lock
()
defer
w
.
startLock
.
Unlock
()
if
(
w
.
maxlines
>
0
&&
w
.
maxlines_curlines
>=
w
.
maxlines
)
||
(
w
.
maxsize
>
0
&&
w
.
maxsize_cursize
>=
w
.
maxsize
)
||
(
w
.
daily
&&
time
.
Now
()
.
Day
()
!=
w
.
daily_opendate
)
{
if
err
:=
w
.
DoRotate
(
true
);
err
!=
nil
{
fmt
.
Fprintf
(
os
.
Stderr
,
"FileLogWriter(%q): %s
\n
"
,
w
.
filename
,
err
)
return
}
}
w
.
maxlines_curlines
++
w
.
maxsize_cursize
+=
size
}
func
(
w
*
FileLogWriter
)
Printf
(
format
string
,
v
...
interface
{})
{
// Perform the write
str
:=
fmt
.
Sprintf
(
format
,
v
...
)
n
:=
24
+
len
(
str
)
// 24 stand for the length "2013/06/23 21:00:22 [T] "
w
.
docheck
(
n
)
w
.
Logger
.
Printf
(
format
,
v
...
)
}
func
(
w
*
FileLogWriter
)
DoRotate
(
rotate
bool
)
error
{
if
rotate
{
_
,
err
:=
os
.
Lstat
(
w
.
filename
)
if
err
==
nil
{
// file exists
// Find the next available number
num
:=
1
fname
:=
""
for
;
err
==
nil
&&
num
<=
999
;
num
++
{
fname
=
w
.
filename
+
fmt
.
Sprintf
(
".%s.%03d"
,
time
.
Now
()
.
Format
(
"2006-01-02"
),
num
)
_
,
err
=
os
.
Lstat
(
fname
)
}
// return error if the last file checked still existed
if
err
==
nil
{
return
fmt
.
Errorf
(
"Rotate: Cannot find free log number to rename %s
\n
"
,
w
.
filename
)
}
// Rename the file to its newfound home
err
=
os
.
Rename
(
w
.
filename
,
fname
)
if
err
!=
nil
{
return
fmt
.
Errorf
(
"Rotate: %s
\n
"
,
err
)
}
go
w
.
deleteOldLog
()
}
}
// Open the log file
fd
,
err
:=
os
.
OpenFile
(
w
.
filename
,
os
.
O_WRONLY
|
os
.
O_APPEND
|
os
.
O_CREATE
,
0660
)
if
err
!=
nil
{
return
err
}
w
.
Logger
=
log
.
New
(
fd
,
""
,
log
.
Ldate
|
log
.
Ltime
)
finfo
,
err
:=
fd
.
Stat
()
if
err
!=
nil
{
return
fmt
.
Errorf
(
"get stat err: %s
\n
"
,
err
)
}
w
.
maxsize_cursize
=
int
(
finfo
.
Size
())
w
.
daily_opendate
=
time
.
Now
()
.
Day
()
if
finfo
.
Size
()
>
0
{
content
,
err
:=
ioutil
.
ReadAll
(
fd
)
if
err
!=
nil
{
//Do something
}
w
.
maxlines_curlines
=
len
(
strings
.
Split
(
string
(
content
),
"
\n
"
))
}
else
{
w
.
maxlines_curlines
=
0
}
BeeLogger
=
w
return
nil
}
func
(
w
*
FileLogWriter
)
deleteOldLog
()
{
dir
:=
path
.
Dir
(
w
.
filename
)
filepath
.
Walk
(
dir
,
func
(
path
string
,
info
os
.
FileInfo
,
err
error
)
error
{
if
!
info
.
IsDir
()
&&
info
.
ModTime
()
.
Unix
()
<
(
time
.
Now
()
.
Unix
()
-
60
*
60
*
24
*
w
.
maxday
)
{
os
.
Remove
(
path
)
}
return
nil
})
}
// Log levels to control the logging output.
const
(
...
...
@@ -34,8 +163,29 @@ func SetLevel(l int) {
level
=
l
}
type
IBeeLogger
interface
{
Fatal
(
v
...
interface
{})
Fatalf
(
format
string
,
v
...
interface
{})
Fatalln
(
v
...
interface
{})
Flags
()
int
Output
(
calldepth
int
,
s
string
)
error
Panic
(
v
...
interface
{})
Panicf
(
format
string
,
v
...
interface
{})
Panicln
(
v
...
interface
{})
Prefix
()
string
Print
(
v
...
interface
{})
Printf
(
format
string
,
v
...
interface
{})
Println
(
v
...
interface
{})
SetFlags
(
flag
int
)
SetPrefix
(
prefix
string
)
}
// logger references the used application logger.
var
BeeLogger
=
log
.
New
(
os
.
Stdout
,
""
,
log
.
Ldate
|
log
.
Ltime
)
var
BeeLogger
IBeeLogger
func
init
()
{
BeeLogger
=
log
.
New
(
os
.
Stdout
,
""
,
log
.
Ldate
|
log
.
Ltime
)
}
// SetLogger sets a new logger.
func
SetLogger
(
l
*
log
.
Logger
)
{
...
...
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