mirror of
https://github.com/strongdm/comply
synced 2024-07-08 17:31:47 +00:00
72 lines
1.4 KiB
Markdown
72 lines
1.4 KiB
Markdown
lumber
|
|
======
|
|
|
|
A simple logger for Go.
|
|
|
|
Provides console and file loggers that support 6 log levels. The file logger supports log backup and
|
|
rotation.
|
|
|
|
### Usage: ###
|
|
Log to the default (console) logger
|
|
|
|
```go
|
|
lumber.Error("An error message")
|
|
```
|
|
|
|
Create a new console logger that only logs messages of level WARN or higher
|
|
|
|
```go
|
|
log := lumber.NewConsoleLogger(lumber.WARN)
|
|
```
|
|
|
|
Change the log level for a logger
|
|
|
|
```go
|
|
log.Level(lumber.INFO)
|
|
```
|
|
|
|
Create a new file logger that rotates at 5000 lines (up to 9 backups) with a 100 message buffer
|
|
|
|
```go
|
|
log := lumber.NewFileLogger("filename.log", lumber.INFO, lumber.ROTATE, 5000, 9, 100)
|
|
// or
|
|
log := lumber.NewRotateLogger("filename.log", 5000, 9)
|
|
```
|
|
|
|
Send messages to the log
|
|
|
|
```go
|
|
// the log methods use fmt.Printf() syntax
|
|
log.Trace("the %s log level", "lowest")
|
|
log.Debug("")
|
|
log.Info("the default log level")
|
|
log.Warn("")
|
|
log.Error("")
|
|
log.Fatal("the %s log level", "highest")
|
|
```
|
|
|
|
Add a prefix to label different logs
|
|
|
|
```go
|
|
log.Prefix("MYAPP")
|
|
```
|
|
|
|
Use a MultiLogger
|
|
|
|
```go
|
|
mlog := NewMultiLogger()
|
|
mlog.AddLoggers(log1, log2)
|
|
mlog.Warn("This message goes to multiple loggers")
|
|
mlog.Close() // closes all loggers
|
|
```
|
|
|
|
### Modes: ###
|
|
|
|
APPEND: Append if the file exists, otherwise create a new file
|
|
|
|
TRUNC: Open and truncate the file, regardless of whether it already exists
|
|
|
|
BACKUP: Rotate the log every time a new logger is created
|
|
|
|
ROTATE: Append if the file exists, when the log reaches maxLines rotate files
|