Swiftpack.co -  Alexander-Ignition/OSLogging as Swift Package
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swift-log + os.log
.package(url: "https://github.com/Alexander-Ignition/OSLogging.git", from: "1.0.2")


SPM compatible GitHub license

OSLog logging backend for swift-log


  • ☑ Configure OSLog
  • ☑ Mapping logging levels of Logger.Level to OSLogType
  • ☑ Customize metadata formatter


Add dependency to Package.swift...

.package(url: "https://github.com/Alexander-Ignition/OSLogging", from: "1.0.0"),

... and your target

.target(name: "ExampleApp", dependencies: ["OSLogging"]),


Override LoggingSystem with default OSLog.

LoggingSystem.bootstrap { _ in OSLogHandler() }

let logger = Logger(label: "com.example.app")
logger.info("i found you!")
// 2019-10-20 08:47:35.498086+0300 ExampleApp[6533:150683] i found you!

Сhoose subsystems and categories for different parts of the application

let logger = Logger(label: "com.exaple.app") { label in
    OSLogHandler(subsystem: label, category: "auth")

logger.info("loose control")
// 2019-10-20 08:47:35.498582+0300 ExampleApp[6533:150683] [auth] loose control

Custom metadata format

var logger = Logger(label: "com.exaple.app") { label in
    var hanlder = OSLogHandler(subsystem: label, category: "session")
    hanlder.formatter = { metadata in
        metadata.map { "\($0):\($1)" } .joined(separator: ", ")
    return hanlder
logger[metadataKey: "request-id"] = "1"
logger[metadataKey: "session-id"] = "a"

logger.warning("catch me if you can")
// 2019-10-20 08:47:35.499106+0300 ExampleApp[6533:150683] [session] session-id:a, request-id:1 catch me now


Stars: 0
Last commit: 2 weeks ago

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iOS Software Engineer @ Perry Street Software
Perry Street Software is Jack’d and SCRUFF. We are two of the world’s largest gay, bi, trans and queer social dating apps on iOS and Android. Our brands reach more than 20 million members worldwide so members can connect, meet and express themselves on a platform that prioritizes privacy and security. We invest heavily into SwiftUI and using Swift Packages to modularize the codebase.


Release Notes

2 weeks ago

Swiftpack is being maintained by Petr Pavlik | @ptrpavlik | @swiftpackco | API