create new ConnWrite returning as LoggerInterface.

create ConsoleWriter returning as LoggerInterface.

create a FileLogWriter returning as LoggerInterface.

FIXME: use same log level as other loggers.

create smtp writer.

Register registers given logger provider to adapters.

ConnWriter implements LoggerInterface.

ConsoleWriter implements LoggerInterface and writes messages to terminal.

FileLogWriter implements LoggerInterface.

Logger is default logger in beego application.

an *os.File writer with locker.

smtpWriter implements LoggerInterface and is used to send emails via given SMTP-server.

LoggerInterface represents behaviors of a logger provider.