Critical prints the logging content with [CRIT] header and newline.

Criticalf prints the logging content with [CRIT] header, custom format and newline.

Debug prints the logging content with [DEBU] header and newline.

Debugf prints the logging content with [DEBU] header, custom format and newline.

Error prints the logging content with [ERRO] header and newline.

Errorf prints the logging content with [ERRO] header, custom format and newline.

Fatal prints the logging content with [FATA] header and newline, then exit the current process.

Fatalf prints the logging content with [FATA] header, custom format and newline, then exit the current process.

Info prints the logging content with [INFO] header and newline.

Infof prints the logging content with [INFO] header, custom format and newline.

Notice prints the logging content with [NOTI] header and newline.

Noticef prints the logging content with [NOTI] header, custom format and newline.

Panic prints the logging content with [PANI] header and newline, then panics.

Panicf prints the logging content with [PANI] header, custom format and newline, then panics.

Warning prints the logging content with [WARN] header and newline.

Warningf prints the logging content with [WARN] header, custom format and newline.