mirror of
https://github.com/strongdm/comply
synced 2024-11-14 11:54:53 +00:00
72 lines
1.4 KiB
Markdown
72 lines
1.4 KiB
Markdown
lumber
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======
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A simple logger for Go.
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Provides console and file loggers that support 6 log levels. The file logger supports log backup and
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rotation.
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### Usage: ###
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Log to the default (console) logger
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```go
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lumber.Error("An error message")
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```
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Create a new console logger that only logs messages of level WARN or higher
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```go
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log := lumber.NewConsoleLogger(lumber.WARN)
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```
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Change the log level for a logger
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```go
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log.Level(lumber.INFO)
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```
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Create a new file logger that rotates at 5000 lines (up to 9 backups) with a 100 message buffer
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```go
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log := lumber.NewFileLogger("filename.log", lumber.INFO, lumber.ROTATE, 5000, 9, 100)
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// or
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log := lumber.NewRotateLogger("filename.log", 5000, 9)
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```
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Send messages to the log
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```go
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// the log methods use fmt.Printf() syntax
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log.Trace("the %s log level", "lowest")
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log.Debug("")
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log.Info("the default log level")
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log.Warn("")
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log.Error("")
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log.Fatal("the %s log level", "highest")
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```
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Add a prefix to label different logs
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```go
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log.Prefix("MYAPP")
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```
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Use a MultiLogger
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```go
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mlog := NewMultiLogger()
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mlog.AddLoggers(log1, log2)
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mlog.Warn("This message goes to multiple loggers")
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mlog.Close() // closes all loggers
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```
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### Modes: ###
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APPEND: Append if the file exists, otherwise create a new file
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TRUNC: Open and truncate the file, regardless of whether it already exists
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BACKUP: Rotate the log every time a new logger is created
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ROTATE: Append if the file exists, when the log reaches maxLines rotate files
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