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CocoaLumberjack

CocoaLumberjack is a fast & simple, yet powerful & flexible logging framework for Mac and iOS.

How to get started

install via CocoaPods

Swift version via CocoaPods

platform :ios, '8.0'

# You need to set target when you use CocoaPods 1.0.0 or later.
target 'SampleTarget' do 
  use_frameworks!
  pod 'CocoaLumberjack/Swift'
end

Note: Swift is a subspec which will include all the Obj-C code plus the Swift one, so this is sufficient. For more details about how to use Swift with Lumberjack, see this conversation.

Swift Usage

If you installed using CocoaPods or manually:

import CocoaLumberjack

DDLog.add(DDTTYLogger.sharedInstance) // TTY = Xcode console
DDLog.add(DDASLLogger.sharedInstance) // ASL = Apple System Logs

let fileLogger: DDFileLogger = DDFileLogger() // File Logger
fileLogger.rollingFrequency = TimeInterval(60*60*24)  // 24 hours
fileLogger.logFileManager.maximumNumberOfLogFiles = 7
DDLog.add(fileLogger)

...

DDLogVerbose("Verbose")
DDLogDebug("Debug")
DDLogInfo("Info")
DDLogWarn("Warn")
DDLogError("Error")

Obj-C version via CocoaPods

platform :ios, '7.0'
pod 'CocoaLumberjack'

Obj-C usage

If you're using Lumberjack as a framework, you can @import CocoaLumberjack.

Otherwise, #import <CocoaLumberjack/CocoaLumberjack.h>

[DDLog addLogger:[DDTTYLogger sharedInstance]]; // TTY = Xcode console
[DDLog addLogger:[DDASLLogger sharedInstance]]; // ASL = Apple System Logs

DDFileLogger *fileLogger = [[DDFileLogger alloc] init]; // File Logger
fileLogger.rollingFrequency = 60 * 60 * 24; // 24 hour rolling
fileLogger.logFileManager.maximumNumberOfLogFiles = 7;
[DDLog addLogger:fileLogger];

...

DDLogVerbose(@"Verbose");
DDLogDebug(@"Debug");
DDLogInfo(@"Info");
DDLogWarn(@"Warn");
DDLogError(@"Error");

Installation with Carthage (iOS 8+)

Carthage is a lightweight dependency manager for Swift and Objective-C. It leverages CocoaTouch modules and is less invasive than CocoaPods.

To install with Carthage, follow the instruction on Carthage

Cartfile

github "CocoaLumberjack/CocoaLumberjack"

or install manually
read the Getting started guide, check out the FAQ section or the other docs
if you find issues or want to suggest improvements, create an issue or a pull request
for all kinds of questions involving CocoaLumberjack, use the Google group or StackOverflow (use #lumberjack).

CocoaLumberjack 3

Migrating to 3.x

To be determined

Features

Lumberjack is Fast & Simple, yet Powerful & Flexible.

It is similar in concept to other popular logging frameworks such as log4j, yet is designed specifically for Objective-C, and takes advantage of features such as multi-threading, grand central dispatch (if available), lockless atomic operations, and the dynamic nature of the Objective-C runtime.

Lumberjack is Fast

In most cases it is an order of magnitude faster than NSLog.

Lumberjack is Simple

It takes as little as a single line of code to configure lumberjack when your application launches. Then simply replace your NSLog statements with DDLog statements and that's about it. (And the DDLog macros have the exact same format and syntax as NSLog, so it's super easy.)

Lumberjack is Powerful:

One log statement can be sent to multiple loggers, meaning you can log to a file and the console simultaneously. Want more? Create your own loggers (it's easy) and send your log statements over the network. Or to a database or distributed file system. The sky is the limit.

Lumberjack is Flexible:

Configure your logging however you want. Change log levels per file (perfect for debugging). Change log levels per logger (verbose console, but concise log file). Change log levels per xcode configuration (verbose debug, but concise release). Have your log statements compiled out of the release build. Customize the number of log levels for your application. Add your own fine-grained logging. Dynamically change log levels during runtime. Choose how & when you want your log files to be rolled. Upload your log files to a central server. Compress archived log files to save disk space...

This framework is for you if:

You're looking for a way to track down that impossible-to-reproduce bug that keeps popping up in the field.
You're frustrated with the super short console log on the iPhone.
You're looking to take your application to the next level in terms of support and stability.
You're looking for an enterprise level logging solution for your application (Mac or iPhone).

Documentation

Requirements

The current version of Lumberjack requires:

Xcode 9 or later
Swift 4.0 or later
iOS 6 or later
OS X 10.8 or later
WatchOS 2 or later
TVOS 9 or later

Backwards compability

for iOS 5 and OS X 10.7, use the 3.3 version
for Xcode 8 and Swift 3, use the 3.2 version
for Xcode 7.3 and Swift 2.3, use the 2.4.0 version
for Xcode 7.3 and Swift 2.2, use the 2.3.0 version
for Xcode 7.2 and 7.1, use the 2.2.0 version
for Xcode 7.0 or earlier, use the 2.1.0 version
for Xcode 6 or earlier, use the 2.0.x version
for OS X < 10.7 support, use the 1.6.0 version

Communication

If you need help, use Stack Overflow. (Tag 'lumberjack')
If you'd like to ask a general question, use Stack Overflow.
If you found a bug, open an issue.
If you have a feature request, open an issue.
If you want to contribute, submit a pull request.

README.md