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//
// Logging.swift
// MullvadVPN
//
// Created by pronebird on 02/08/2020.
// Copyright © 2020 Mullvad VPN AB. All rights reserved.
//
import Foundation
import Logging
func initLoggingSystem(bundleIdentifier: String) {
let containerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: ApplicationConfiguration.securityGroupIdentifier)!
let logsDirectoryURL = containerURL.appendingPathComponent("Logs", isDirectory: true)
let logFileName = "\(bundleIdentifier).log"
let logFileURL = logsDirectoryURL.appendingPathComponent(logFileName)
// Create Logs folder within container if it doesn't exist
try? FileManager.default.createDirectory(at: logsDirectoryURL, withIntermediateDirectories: false, attributes: nil)
// Rotate log
let logRotationResult = LogRotation.rotateLog(logsDirectory: logsDirectoryURL, logFileName: logFileName)
// Create an array of log output streams
var streams: [TextOutputStream] = []
#if DEBUG
// Add standard output logging in debug
streams.append(TextFileOutputStream.standardOutputStream())
#endif
// Create output stream to file
if let fileLogStream = TextFileOutputStream(fileURL: logFileURL, createFile: true) {
streams.append(fileLogStream)
}
// Configure Logging system
LoggingSystem.bootstrap { (label) -> LogHandler in
if streams.isEmpty {
return SwiftLogNoOpLogHandler()
} else {
return CustomFormatLogHandler(label: label, streams: streams)
}
}
if case .failure(let logRotationError) = logRotationResult {
Logger(label: "LogRotation")
.error(chainedError: logRotationError, message: "Failed to rotate log")
}
}
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