Logging.Filter

Documentation

data Filter

Filters are used to perform arbitrary filtering of LogRecords.

Sinks and Handlers can optionally use Filter to filter LogRecords as desired. It allows events which are below a certain point in the sink hierarchy. For example, a Filter initialized with A.B will allow events logged by loggers A.B, A.B.C, A.B.C.D, A.B.D etc. but not A.BB, B.A.B etc.

If initialized with the empty string, all events are passed.

If initialized with a predicate function, the Logger will be considered as the Filter's name, the function will be used to filter LogRecords.

Constructors

Filter Logger (Maybe (LogRecord -> Bool))

Instances

Eq Filter

If two Filters have same Logger (name), they are equal.

Defined in Logging.Filter

Methods

(==) :: Filter -> Filter -> Bool

(/=) :: Filter -> Filter -> Bool

Read Filter

Defined in Logging.Filter

Methods

readsPrec :: Int -> ReadS Filter

readList :: ReadS [Filter]

readPrec :: ReadPrec Filter

readListPrec :: ReadPrec [Filter]

Show Filter

Defined in Logging.Filter

Methods

showsPrec :: Int -> Filter -> ShowS

show :: Filter -> String

showList :: [Filter] -> ShowS

IsString Filter

Defined in Logging.Filter

Methods

fromString :: String -> Filter

FromJSON Filter

Defined in Logging.Filter

Methods

parseJSON :: Value -> Parser Filter

parseJSONList :: Value -> Parser [Filter]

Filterable Filter

Defined in Logging.Filter

Methods

filter :: Filter -> LogRecord -> Bool

HasType Filterer SomeHandler

Defined in Logging.Class.Handler

Methods

typed :: Lens SomeHandler SomeHandler Filterer Filterer

getTyped :: SomeHandler -> Filterer

setTyped :: Filterer -> SomeHandler -> SomeHandler

type Filterer = [Filter]

List of Filter