Crashlytics + CocoaLumberjack Logging

CrashlyticsLogger.swift

import Foundation
import CocoaLumberjack
import Crashlytics

private func write(string: String) {
    CLSLogv("%@", getVaList([string]))
}

@objcMembers
final class CrashlyticsLogger: DDAbstractLogger {
    static let sharedInstance = CrashlyticsLogger()

    private override init() {
        super.init()
        self.logFormatter = DDLogFileFormatterDefault()
    }

    override func log(message logMessage: DDLogMessage) {
        guard let formatter = self.value(forKey: "_logFormatter") as? DDLogFormatter else { return }
        guard let message = formatter.format(message: logMessage) else { return }

        write(string: message)
    }
}