logs

Documentation

Overview

Package logs provides the low-level routines for directing log messages. It creates several logging channels for debug, info, errors, http, etc. These channels are directed to log files and/or stdout depending on how the application is configured. This package reads its configuration directly from a config file. In here you will find the log rotation config for rotatorr, panic redirection, and external logging methods.

Index

• Variables
• type FileMode
  • func (f FileMode) MarshalText() ([]byte, error)
  • func (f FileMode) Mode() os.FileMode
  • func (f FileMode) String() string
  • func (f *FileMode) UnmarshalText(text []byte) error
• type LogConfig
  • func (l *LogConfig) GetActiveLogFilePaths() []string
• type LogFileInfo
• type LogFileInfos
  • func GetFilePaths(files ...string) *LogFileInfos
  • func (l *LogFileInfos) Len() int
  • func (l *LogFileInfos) Less(i, j int) bool
  • func (l *LogFileInfos) Swap(i, j int)
• type Logger
  • func CustomLog(filePath, logName string) *Logger
  • func New() *Logger
  • func (l *Logger) CapturePanic()
  • func (l *Logger) Close() (errors []error)
  • func (l *Logger) Debug(v ...interface{})
  • func (l *Logger) DebugEnabled() bool
  • func (l *Logger) Debugf(msg string, v ...interface{})
  • func (l *Logger) Error(v ...interface{})
  • func (l *Logger) Errorf(msg string, v ...interface{})
  • func (l *Logger) ErrorfNoShare(msg string, v ...interface{})
  • func (l *Logger) GetAllLogFilePaths() *LogFileInfos
  • func (l *Logger) GetDebugLog() *log.Logger
  • func (l *Logger) GetErrorLog() *log.Logger
  • func (l *Logger) GetInfoLog() *log.Logger
  • func (l *Logger) Print(v ...interface{})
  • func (l *Logger) Printf(msg string, v ...interface{})
  • func (l *Logger) Rotate() (errors []error)
  • func (l *Logger) SetupLogging(config *LogConfig)

Variables

var (
	ErrCloseCustom = fmt.Errorf("cannot close custom logs directly")
)

Custom errors.

Types

type FileMode

type FileMode os.FileMode

FileMode is used to unmarshal a unix file mode from the config file.

func (FileMode) MarshalText

func (f FileMode) MarshalText() ([]byte, error)

MarshalText satisfies an encoder.TextMarshaler interface.

func (FileMode) Mode

func (f FileMode) Mode() os.FileMode

Mode returns the compatible os.FileMode.

func (FileMode) String

func (f FileMode) String() string

String creates a unix-octal version of a file mode.

func (*FileMode) UnmarshalText

func (f *FileMode) UnmarshalText(text []byte) error

UnmarshalText turns a unix file mode, wrapped in quotes or not, into a usable os.FileMode.

type LogConfig

type LogConfig struct {
	AppName   string   `json:"-"`
	LogFile   string   `json:"logFile" toml:"log_file" xml:"log_file" yaml:"logFile"`
	DebugLog  string   `json:"debugLog" toml:"debug_log" xml:"debug_log" yaml:"debugLog"`
	HTTPLog   string   `json:"httpLog" toml:"http_log" xml:"http_log" yaml:"httpLog"`
	LogFiles  int      `json:"logFiles" toml:"log_files" xml:"log_files" yaml:"logFiles"`
	LogFileMb int      `json:"logFileMb" toml:"log_file_mb" xml:"log_file_mb" yaml:"logFileMb"`
	FileMode  FileMode `json:"fileMode" toml:"file_mode" xml:"file_mode" yaml:"fileMode"`
	Debug     bool     `json:"debug" toml:"debug" xml:"debug" yaml:"debug"`
	Quiet     bool     `json:"quiet" toml:"quiet" xml:"quiet" yaml:"quiet"`
	NoUploads bool     `json:"noUploads" toml:"no_uploads" xml:"no_uploads" yaml:"noUploads"`
}

LogConfig allows sending logs to rotating files. Setting an AppName will force log creation even if LogFile and HTTPLog are empty.

func (*LogConfig) GetActiveLogFilePaths

func (l *LogConfig) GetActiveLogFilePaths() []string

GetActiveLogFilePaths returns the configured log file paths.

type LogFileInfo

type LogFileInfo struct {
	ID   string
	Name string
	Path string
	Size int64
	Time time.Time
	Mode fs.FileMode
	Used bool
	User string
}

LogFileInfo is returned by GetAllLogFilePaths.

type LogFileInfos

type LogFileInfos struct {
	Dirs []string
	Size int64
	List []*LogFileInfo
}

LogFileInfos holds metadata about files.

func GetFilePaths

func GetFilePaths(files ...string) *LogFileInfos

GetFilePaths is a helper function that returns data about similar files in a folder with the provided file(s). This is useful to find "all the log files" or "all the .conf files" in a folder. Simply pass in 1 or more file paths, and any files in the same folder with the same extension will be returned.

func (*LogFileInfos) Len

func (l *LogFileInfos) Len() int

func (*LogFileInfos) Less

func (l *LogFileInfos) Less(i, j int) bool

func (*LogFileInfos) Swap

func (l *LogFileInfos) Swap(i, j int)

type Logger

type Logger struct {
	ErrorLog *log.Logger // Shares a Writer with InfoLog.
	DebugLog *log.Logger // Shares a Writer with InfoLog by default. Changeable.
	InfoLog  *log.Logger
	HTTPLog  *log.Logger

	LogConfig *LogConfig
	// contains filtered or unexported fields
}

Logger provides some methods with baked in assumptions.

func CustomLog

func CustomLog(filePath, logName string) *Logger

CustomLog allows the creation of ad-hoc rotating log files from other packages. This is not thread safe with Rotate(), so do not call them at the same time.

func New

func New() *Logger

New returns a new Logger with debug off and sends everything to stdout.

func (*Logger) CapturePanic

func (l *Logger) CapturePanic()

CapturePanic can be deferred in any go routine to log any panic that occurs.

func (*Logger) Close

func (l *Logger) Close() (errors []error)

Close closes all open log files. Does not work on custom logs.

func (*Logger) Debug

func (l *Logger) Debug(v ...interface{})

Debug writes log lines... to stdout and/or a file.

func (*Logger) DebugEnabled

func (l *Logger) DebugEnabled() bool

func (*Logger) Debugf

func (l *Logger) Debugf(msg string, v ...interface{})

Debugf writes log lines... to stdout and/or a file.

func (*Logger) Error

func (l *Logger) Error(v ...interface{})

Error writes log lines... to stdout and/or a file.

func (*Logger) Errorf

func (l *Logger) Errorf(msg string, v ...interface{})

Errorf writes log lines... to stdout and/or a file.

func (*Logger) ErrorfNoShare

func (l *Logger) ErrorfNoShare(msg string, v ...interface{})

ErrorfNoShare writes log lines... to stdout and/or a file.

func (*Logger) GetAllLogFilePaths

func (l *Logger) GetAllLogFilePaths() *LogFileInfos

GetAllLogFilePaths searches the disk for log file names.

func (*Logger) GetDebugLog

func (l *Logger) GetDebugLog() *log.Logger

func (*Logger) GetErrorLog

func (l *Logger) GetErrorLog() *log.Logger

func (*Logger) GetInfoLog

func (l *Logger) GetInfoLog() *log.Logger

func (*Logger) Print

func (l *Logger) Print(v ...interface{})

Print writes log lines... to stdout and/or a file.

func (*Logger) Printf

func (l *Logger) Printf(msg string, v ...interface{})

Printf writes log lines... to stdout and/or a file.

func (*Logger) Rotate

func (l *Logger) Rotate() (errors []error)

Rotate rotates the log files. If called on a custom log, only rotates that log file.

func (*Logger) SetupLogging

func (l *Logger) SetupLogging(config *LogConfig)

SetupLogging splits log writers into a file and/or stdout.