Logger Structure

The Logger class serves as the core element for the logging system.

Usage

Logger(path, con, verbose, level)

Arguments

path

character vector, a path to the log file to use

con

(optional) connection to a file

verbose

logical, whether R should report extra information on progress

level

character vector, the log level of the logger. Levels are a mechanism to categorise the severity of an event. Eight levels are supported:

"OFF"

indicates the logger is inactive

"FATAL"

indicates a fatal event in the application that prevents it from running

"ERROR"

indicates an error in the application, possibly recoverable

"WARN"

indicates an event that might lead to an error

"INFO"

indicates informational messages

"DEBUG"

indicates general debugging messages

"TRACE"

indicates fine-grained debug events

"ALL"

all levels are considered

Levels are considered ordered: OFF < FATAL < ERROR < WARN < INFO < DEBUG < TRACE < ALL

For example, if we set the level of a logger to DEBUG, then all INFO, WARN, ERROR, and FATAL events will be logged.

Value

A Logger object.

Author

Alessandro Barberis