Logger wip about vapor

[tanner0101]

Great implementation so far.
I think the most Vapor way to do this would be an API like so.

Log.info("Informational log")
Log.error("something bad happened")

Where the Log class looks something like this

class Log {
  static var driver: LogDriver
  static func info(message: Any) { }
  ...etc
}

This way the logger implementation can be easily swapped out without affecting the interface for logging.

Log.driver = MyCustomLogger()

Let me know what you think.

[mpclarkson]

Yep - makes sense. I will refactor it tomorrow my time.

[mpclarkson]

The logger now simply includes a LoggerDriver protocol, a default ConsoleLogger which implements this protocol and a Log class with static methods for each log level.

In the Log class you can:

• Override the default logger
• Define which levels to log by setting [LogLevel] to the static var enabledLevels.
• Log a Custom log level

For example:

Log.info("this is informational") //Only displays if enabledLevel contains .Info
Log.custom("this is a custom method", label: "MyLevel")

//Example output: [2016-02-21 23:14:36 +0000] INFO: Received GET request for /

The Log class:

public class Log {

    public static var driver: Logger = ConsoleLogger()
    public static var enabledLevels: [LogLevel] = LogLevel.all

    public static func verbose(message: String) {
        if Log.enabledLevels.contains(.Verbose) {
            driver.log(.Verbose, message: message)
        }
    }

 //other methods

Let me know...

[tanner0101]

This looks great. I'll test it out when I'm back on my computer.

[tanner0101]

Could you submit this code as a branch on qutheory/vapor?

[mpclarkson]

done

[mpclarkson]

Merged in #54