CocoaLumberJack - Swift Custom Formatter Sample

BeautyLogFormmater.swift

import Foundation
import CocoaLumberjack

class BeautyLogFormmater: NSObject, DDLogFormatter {
    
    public func format(message logMessage: DDLogMessage) -> String? {
        
        var logLevel: String = ""
        switch logMessage.flag {
        case .debug:
            logLevel = "Debug"
        case .error:
            logLevel = "Errored"
        case .info:
            logLevel = "Info"
        case .verbose:
            logLevel = "Verbose"
        case .warning:
            logLevel = "Warning"
        default:
            logLevel = "Unknown"
        }
        let function = logMessage.function ?? ""
        return "[\(logLevel),\(logMessage.timestamp)]:[\(logMessage.fileName),\(function),\(logMessage.line)]\nMessage:[\(logMessage.message)]"
    }
}

This is an simple example of writing an custom log formatter in Swift 5 for CocoaLumberJack