##GeminiLogging

A logging library for Apollo.

###GeminiLogging Methods

• GetLogger - returns a logger object
  • Requires an options table:

    • level - Most detailed level of log to display, see below

    • pattern - Output pattern using the following substitutions:

      • %d - Date
      • %l - Error Level
      • %c - Function Name
      • %n - Line Number
      • %m - Message Passed to Error function

    • appender - Destination for Error message output examples:

      • GeminiConsole - Outputs to GeminiConsole if present, Print otherwise
      • blank - Print Function
      • custom function - function takes 3 vars: self, message, level

###Logger Methods

All loggers accept either a table that will be outputted or a string.format string and arguments.

• debug - Generates a DEBUG level message

• info - Generates a INFO level message

• warn - Generates a WARN level message

• error - Generates a ERROR level message

• fatal - Generates a FATAL level message

• SetLevel - Can be used to dynamically change the log display level. Example:

  • lua glog:SetLevel("WARN")

###Logging Levels:

The following levels are available:

Level	Description
DEBUG	Fine-grained informational events that are most useful to debug an application
INFO	Informational messages that highlight the progress of the application at coarse-grained level
WARN	Potentially harmful situations
ERROR	Error events that might still allow the application to continue running
FATAL	Designates very severe error events that will presumably lead the application to abort

###Example Usage:

local glog

function MyAddon:OnLoad()
	local GeminiLogging = Apollo.GetPackage("Gemini:Logging-1.2").tPackage
	glog = GeminiLogging:GetLogger({
        level = GeminiLogging.FATAL,
        pattern = "%d %n %c %l - %m",
        appender = "GeminiConsole"
    })
end

function MyAddon:DoFoo(strBaz, nBar, tBat)
	glog:debug("Baz: %s; Bar: %d", strBaz, nBar)  -- Not shown due to logging level
	glog:info(tBat)                               -- Not shown due to logging level

	glog:fatal("You'll see this one! Baz: %s", strBaz)
	glog:fatal(tBat)
	...
end