140 lines
3.5 KiB
Go
140 lines
3.5 KiB
Go
package logger
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/alecthomas/units"
|
|
)
|
|
|
|
// Option is to encaspulate actions that will be called by Parse and run later to build an Options struct
|
|
type Option func(*Options) error
|
|
|
|
// Options is use to set logging configuration data
|
|
type Options struct {
|
|
logFileDirectory string
|
|
maxFileSize units.Base2Bytes
|
|
maxFileCount uint
|
|
terminalOutputDisabled bool
|
|
supportedFileLevels []Level
|
|
supportedTerminalLevels []Level
|
|
}
|
|
|
|
// DisableTerminal stops terminal output for the logger
|
|
func DisableTerminal(disable bool) Option {
|
|
return func(c *Options) error {
|
|
c.terminalOutputDisabled = disable
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// File sets a custom file to log events
|
|
func File(path string, size units.Base2Bytes, count uint) Option {
|
|
return func(c *Options) error {
|
|
c.logFileDirectory = path
|
|
c.maxFileSize = size
|
|
c.maxFileCount = count
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// DefaultFile configures the log options will the defaults
|
|
func DefaultFile(directoryPath string) Option {
|
|
return func(c *Options) error {
|
|
size, err := units.ParseBase2Bytes("1MB")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
c.logFileDirectory = directoryPath
|
|
c.maxFileSize = size
|
|
c.maxFileCount = 5
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// SupportedFileLevels sets the supported logging levels for the log file
|
|
func SupportedFileLevels(supported []Level) Option {
|
|
return func(c *Options) error {
|
|
c.supportedFileLevels = supported
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// SupportedTerminalevels sets the supported logging levels for the terminal output
|
|
func SupportedTerminalevels(supported []Level) Option {
|
|
return func(c *Options) error {
|
|
c.supportedTerminalLevels = supported
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// LogLevelString sets the supported logging levels from a command line flag
|
|
func LogLevelString(level string) Option {
|
|
return func(c *Options) error {
|
|
supported, err := ParseLevelString(level)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.supportedFileLevels = supported
|
|
c.supportedTerminalLevels = supported
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// Parse builds the Options struct so the caller knows what actions should be run
|
|
func Parse(opts ...Option) (*Options, error) {
|
|
options := &Options{}
|
|
for _, opt := range opts {
|
|
if err := opt(options); err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return options, nil
|
|
}
|
|
|
|
// New setups a new logger based on the options.
|
|
// The default behavior is to write to standard out
|
|
func New(opts ...Option) (Service, error) {
|
|
config, err := Parse(opts...)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
l := NewOutputWriter(SharedWriteManager)
|
|
if config.logFileDirectory != "" {
|
|
l.Add(NewFileRollingWriter(config.logFileDirectory,
|
|
"cloudflared",
|
|
int64(config.maxFileSize),
|
|
config.maxFileCount),
|
|
NewDefaultFormatter(time.RFC3339Nano), config.supportedFileLevels...)
|
|
}
|
|
|
|
if !config.terminalOutputDisabled {
|
|
if len(config.supportedTerminalLevels) == 0 {
|
|
l.Add(os.Stderr, NewTerminalFormatter(""), InfoLevel, ErrorLevel, FatalLevel)
|
|
} else {
|
|
l.Add(os.Stderr, NewTerminalFormatter(""), config.supportedTerminalLevels...)
|
|
}
|
|
}
|
|
return l, nil
|
|
}
|
|
|
|
// ParseLevelString returns the expected log levels based on the cmd flag
|
|
func ParseLevelString(lvl string) ([]Level, error) {
|
|
switch strings.ToLower(lvl) {
|
|
case "fatal":
|
|
return []Level{FatalLevel}, nil
|
|
case "error":
|
|
return []Level{FatalLevel, ErrorLevel}, nil
|
|
case "info", "warn":
|
|
return []Level{FatalLevel, ErrorLevel, InfoLevel}, nil
|
|
case "debug":
|
|
return []Level{FatalLevel, ErrorLevel, InfoLevel, DebugLevel}, nil
|
|
}
|
|
return []Level{}, fmt.Errorf("not a valid log level: %q", lvl)
|
|
}
|