LoggingFunctions: Logging in the 'COTAN' package

In seriph78/COTAN: COexpression Tables ANalysis

Logging in the COTAN package

Description

Logging is currently supported for all COTAN functions. It is possible to see the output on the terminal and/or on a log file. The level of output on terminal is controlled by the COTAN.LogLevel option while the logging on file is always at its maximum verbosity

Usage

setLoggingLevel(newLevel = 1L)

setLoggingFile(logFileName)

logThis(msg, logLevel = 2L, appendLF = TRUE)

Arguments

newLevel	the new default logging level. It defaults to 1
logFileName	the log file.
msg	the message to print
logLevel	the logging level of the current message. It defaults to 2
appendLF	whether to add a new-line character at the end of the message

Details

setLoggingLevel() sets the COTAN logging level. It set the COTAN.LogLevel options to one of the following values:

• 0 - Always on log messages

• 1 - Major log messages

• 2 - Minor log messages

• 3 - All log messages

setLoggingFile() sets the log file for all COTAN output logs. By default no logging happens on a file (only on the console). Using this function COTAN will use the indicated file to dump the logs produced by all logThis() commands, independently from the log level. It stores the connection created by the call to bzfile() in the option: COTAN.LogFile

logThis() prints the given message string if the current log level is greater or equal to the given log level (it always prints its message on file if active). It uses message() to actually print the messages on the stderr() connection, so it is subject to suppressMessages()

Value

setLoggingLevel() returns the old logging level or default level if not set yet.

logThis() returns TRUE if the message has been printed on the terminal

Examples

setLoggingLevel(3) # for debugging purposes only

logFile <- file.path(".", "COTAN_Test1.log")
setLoggingFile(logFile)
logThis("Some log message")
setLoggingFile("") # closes the log file
file.remove(logFile)

logThis("LogLevel 0 messages will always show, ",
        logLevel = 0, appendLF = FALSE)
suppressMessages(logThis("unless all messages are suppressed",
                         logLevel = 0))

seriph78/COTAN documentation built on Nov. 15, 2024, 7:09 a.m.