Ros.Logging

Support for publishing log messages at various severity levels. The log messages are annotated with the filename and line number where they are generated.

Documentation

data Log

Instances

Eq Log

Ord Log

Show Log

MsgInfo Log

RosBinary Log

HasHeader Log

Typeable * Log

data LogLevel

Log message levels. These allow for simple filtering of messages.

Constructors

Debug

Info

Warn

Error

Fatal

Instances

Enum LogLevel

Eq LogLevel

enableLogging :: Maybe LogLevel -> Node ()

Enable logging for this node. The argument indicates the level of log messages that should be echoed to standard out. If Nothing, then no messages are printed; if 'Just lvl', then all messages of greater than or equal level are printed.

logDebug :: String -> Q Exp

Template Haskell functions to splice in a Log value. Usage:

$(logDebug "This is my message to you")

logWarn :: String -> Q Exp

Template Haskell functions to splice in a Log value. Usage:

$(logDebug "This is my message to you")

logInfo :: String -> Q Exp

Template Haskell functions to splice in a Log value. Usage:

$(logDebug "This is my message to you")

logError :: String -> Q Exp

Template Haskell functions to splice in a Log value. Usage:

$(logDebug "This is my message to you")

logFatal :: String -> Q Exp

Template Haskell functions to splice in a Log value. Usage:

$(logDebug "This is my message to you")