tinylog-0.8: Simplistic logging using fast-logger.

Safe Haskell	None
Language	Haskell2010

System.Logger.Class

Description

The MonadLogger type-class and associated functions.

Synopsis

Documentation

class Monad m => MonadLogger m where Source

Methods

log :: Level -> (Msg -> Msg) -> m () Source

trace :: MonadLogger m => (Msg -> Msg) -> m () Source

Abbreviation for log using the corresponding log level.

debug :: MonadLogger m => (Msg -> Msg) -> m () Source

Abbreviation for log using the corresponding log level.

info :: MonadLogger m => (Msg -> Msg) -> m () Source

Abbreviation for log using the corresponding log level.

warn :: MonadLogger m => (Msg -> Msg) -> m () Source

Abbreviation for log using the corresponding log level.

err :: MonadLogger m => (Msg -> Msg) -> m () Source

Abbreviation for log using the corresponding log level.

fatal :: MonadLogger m => (Msg -> Msg) -> m () Source

Abbreviation for log using the corresponding log level.

data Level Source

Constructors

Trace
Debug
Info
Warn
Error
Fatal

Instances

Eq Level
Ord Level
Read Level
Show Level

data Output Source

Constructors

StdOut
StdErr
Path FilePath

Instances

Eq Output
Ord Output
Show Output

data Settings Source

Constructors

Settings
Fields logLevel :: Level messages below this log level will be suppressed output :: Output log sink format :: DateFormat the timestamp format (use "" to disable timestamps) delimiter :: ByteString text to intersperse between fields of a log line bufSize :: BufSize how many bytes to buffer before commiting to sink

Instances

Eq Settings
Ord Settings
Show Settings

data Logger Source

data DateFormat Source

Instances

Eq DateFormat
Ord DateFormat
Show DateFormat
IsString DateFormat

new :: MonadIO m => Settings -> m Logger Source

Create a new Logger with the given Settings. Please note that the logLevel can be dynamically adjusted by setting the environment variable LOG_LEVEL accordingly. Likewise the buffer size can be dynamically set via LOG_BUFFER.

create :: MonadIO m => Output -> m Logger Source

Invokes new with default settings and the given output as log sink.

defSettings :: Settings Source

Default settings for use with new:

iso8601UTC :: DateFormat Source

ISO 8601 date-time format.