setMsgComposer: Sets message composer for logger.

In logging: R Logging Package

Description

Message composer is used to compose log message out of formating string and arguments. It is function with signature function(msg, ...). Formating message is passed under msg and formating arguments are passed as ....

Usage

setMsgComposer(composer_f, container = "")

Arguments

composer_f	message composer function (type: function(msg, ...))
container	name of logger to reser message composer for (type: character)

Details

If message composer is not set default is in use (realized with sprintf). If message composer is not set for sub-logger, parent's message composer will be used.

Examples

setMsgComposer(function(msg, ...) paste0("s-", msg, "-e"))
loginfo("a message") # will log '<TS> INFO::s-a message-e'
resetMsgComposer()
loginfo("a message") # will log '<TS> INFO::a message'

logging documentation built on July 14, 2019, 5:02 p.m.