sftpgo-mirror/logger/logger.go
Nicola Murino 2a8ab620f3 improve logger
log file size, rotation policy and compression are now configurable
2019-07-31 14:06:55 +02:00

113 lines
3.5 KiB
Go

// Package logger provides logging capabilities.
// It is a wrapper around zerolog for logging and lumberjack for log rotation.
// Logs are written to the specified log file.
// Logging on the console is provided to print initialization info, errors and warnings.
// The package provides a request logger to log the HTTP requests for REST API too.
// The request logger uses chi.middleware.RequestLogger,
// chi.middleware.LogFormatter and chi.middleware.LogEntry to build a structured
// logger using zerlog
package logger
import (
"fmt"
"os"
"github.com/rs/zerolog"
lumberjack "gopkg.in/natefinch/lumberjack.v2"
)
const (
dateFormat = "2006-01-02T15:04.05.000" // YYYY-MM-DDTHH:MM.SS.ZZZ
)
var (
logger zerolog.Logger
consoleLogger zerolog.Logger
)
// GetLogger get the configured logger instance
func GetLogger() *zerolog.Logger {
return &logger
}
// InitLogger configures the logger using the given parameters
func InitLogger(logFilePath string, logMaxSize int, logMaxBackups int, logMaxAge int, logCompress bool, level zerolog.Level) {
zerolog.TimeFieldFormat = dateFormat
logger = zerolog.New(&lumberjack.Logger{
Filename: logFilePath,
MaxSize: logMaxSize,
MaxBackups: logMaxBackups,
MaxAge: logMaxAge,
Compress: logCompress,
}).With().Timestamp().Logger().Level(level)
consoleOutput := zerolog.ConsoleWriter{
Out: os.Stdout,
TimeFormat: dateFormat,
NoColor: true,
}
consoleLogger = zerolog.New(consoleOutput).With().Timestamp().Logger().Level(level)
}
// Debug logs at debug level for the specified sender
func Debug(sender string, format string, v ...interface{}) {
logger.Debug().Str("sender", sender).Msg(fmt.Sprintf(format, v...))
}
// Info logs at info level for the specified sender
func Info(sender string, format string, v ...interface{}) {
logger.Info().Str("sender", sender).Msg(fmt.Sprintf(format, v...))
}
// Warn logs at warn level for the specified sender
func Warn(sender string, format string, v ...interface{}) {
logger.Warn().Str("sender", sender).Msg(fmt.Sprintf(format, v...))
}
// Error logs at error level for the specified sender
func Error(sender string, format string, v ...interface{}) {
logger.Error().Str("sender", sender).Msg(fmt.Sprintf(format, v...))
}
// DebugToConsole logs at debug level to stdout
func DebugToConsole(format string, v ...interface{}) {
consoleLogger.Debug().Msg(fmt.Sprintf(format, v...))
}
// InfoToConsole logs at info level to stdout
func InfoToConsole(format string, v ...interface{}) {
consoleLogger.Info().Msg(fmt.Sprintf(format, v...))
}
// WarnToConsole logs at info level to stdout
func WarnToConsole(format string, v ...interface{}) {
consoleLogger.Warn().Msg(fmt.Sprintf(format, v...))
}
// ErrorToConsole logs at error level to stdout
func ErrorToConsole(format string, v ...interface{}) {
consoleLogger.Error().Msg(fmt.Sprintf(format, v...))
}
// TransferLog logs an SFTP upload or download
func TransferLog(operation string, path string, elapsed int64, size int64, user string, connectionID string) {
logger.Info().
Str("sender", operation).
Int64("elapsed_ms", elapsed).
Int64("size_bytes", size).
Str("username", user).
Str("file_path", path).
Str("connection_id", connectionID).
Msg("")
}
// CommandLog logs an SFTP command
func CommandLog(command string, path string, target string, user string, connectionID string) {
logger.Info().
Str("sender", command).
Str("username", user).
Str("file_path", path).
Str("target_path", target).
Str("connection_id", connectionID).
Msg("")
}