Simply run the following from your project root:
go get -u github.com/gleich/lumber/v3Output a "DONE" log.
Demo:
package main
import (
"time"
"github.com/gleich/lumber/v3"
)
func main() {
lumber.Done("booted up the program!")
time.Sleep(2 * time.Second)
lumber.Done("waited 2 seconds!")
}Outputs:
Output an info log.
Demo:
package main
import (
"time"
"github.com/gleich/lumber/v3"
)
func main() {
lumber.Info("Getting the current year")
now := time.Now()
lumber.Info("Current year is", now.Year())
}Outputs:
Output a debug log.
Demo:
package main
import (
"os"
"github.com/gleich/lumber/v3"
)
func main() {
homeDir, _ := os.UserHomeDir()
lumber.Debug("User's home dir is", homeDir)
}Outputs:
Output a warning log.
Demo:
package main
import (
"time"
"github.com/gleich/lumber/v3"
)
func main() {
now := time.Now()
if now.Year() != 2004 {
lumber.Warning("Current year isn't 2004")
}
}Outputs:
Output an error log with a stack trace.
Demo:
package main
import (
"os"
"github.com/gleich/lumber/v3"
)
func main() {
fname := "invisible-file.txt"
_, err := os.ReadFile(fName)
if err != nil {
lumber.Error(err, "Failed to read from", fname)
}
}Outputs:
Output an error message.
Demo:
package main
import "github.com/gleich/lumber/v3"
func main() {
lumber.ErrorMsg("Ahhh stuff broke")
}Outputs:
Output a fatal log with a stack trace.
Demo:
package main
import (
"os"
"github.com/gleich/lumber/v3"
)
func main() {
fName := "invisible-file.txt"
_, err := os.ReadFile(fName)
if err != nil {
lumber.Fatal(err, "Failed to read from", fName)
}
}Outputs:
Output a fatal message.
Demo:
package main
import "github.com/gleich/lumber/v3"
func main() {
lumber.FatalMsg("Ahhh stuff broke")
}Outputs:
You can customize the logger that lumber uses. Below is an example of some of this customization:
package main
import (
"time"
"github.com/gleich/lumber/v3"
)
func main() {
lumber.SetTimezone(time.Local)
lumber.SetTimeFormat("Mon Jan 2 15:04:05 MST 2006")
lumber.SetFatalExitCode(0)
lumber.Done("Calling from custom logger")
}See some examples in the _examples/ folder.