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harness/ff-ios-client-sdk 1.2.0
iOS Client SDK to integrate with Harness FF service
⭐️ 3
🕓 3 weeks ago
iOS
.package(url: "https://github.com/harness/ff-ios-client-sdk.git", from: "1.2.0")

iOS SDK For Harness Feature Flags

SwiftPM compatible CocoaPods compatible Carthage compatible


Use this README to get started with our Feature Flags (FF) SDK for iOS. This guide outlines the basics of getting started with the SDK and provides a full code sample for your to try out.

This sample doesn't include configuration options, for in depth steps and configuring the SDK, for example, disabling streaming or using our Relay Proxy, see the iOS SDK Reference.

For a sample FF iOS SDK project, see our test iOS project.

Requirements

To use this SDK, make sure you've:

  • Installed XCode to use the Swift Package Manager (SPM), CocoaPods, or Carthage

To follow along with our test code sample, make sure you’ve:

Installing the SDK

There are multiple methods to installing the iOS SDK:

Swift Package Manager (SPM)

The Swift Package Manager is a dependency manager integrated into the swift compiler and Xcode.

To integrate ff-ios-client-sdk into an Xcode project, go to the File drop down, and select Add Packages. From here, search the url https://github.com/harness/ff-ios-client-sdk.git in the search bar and click the Add Package button.

OR

You can also add the ff-ios-client-sdk dependency locally by dragging the SDK folder into the root directory of the project and simply add it to the dependencies section of your Package.swift file.

dependencies: [
	.package(url: "https://github.com/harness/ff-ios-client-sdk.git", .upToNextMinor(from: "1.1.0"))
]

 

CocoaPods

The CocoaPods CocoaPods is a dependency manager for Swift and Objective-C Cocoa projects. It has over 81 thousand libraries and is used in over 3 million apps. CocoaPods can help you scale your projects elegantly.

CocoaPods is built with Ruby and it will be installable with the default Ruby available on macOS. You can use a Ruby Version manager, however we recommend that you use the standard Ruby available on macOS unless you know what you're doing.

Using the default Ruby install will require you to use sudo when installing gems. (This is only an issue for the duration of the gem installation, though.)

$ sudo gem install cocoapods

Once cocoapods are installed, from your root project folder, create a Podfile, which will be located in your project's root folder, by entering the next command in your terminal:

$ pod init

To import ff-ios-client-sdk to your .xcproject, simply add ff-ios-client-sdk to your newly created Podfile and save the Podfile changes.

platform :ios, '10.0'
use_frameworks!

target 'MyApp' do
  pod 'ff-ios-client-sdk'
end

Only thing left to do is to install your packages by running the next command.

pod install

NOTE: A new .xcworkspace will be created and you should use that, instead of your .xcodeproj from now on in order to utilize the imported Pods.

Carthage

Carthage is intended to be the simplest way to add frameworks to your Cocoa application. Carthage builds your dependencies and provides you with binary frameworks, but you retain full control over your project structure and setup. Carthage does not automatically modify your project files or your build settings. In order to integrate ff-ios-client-sdk into your app, there are a few steps to follow. Navigate to the root folder of your project and create a Cartfile. This is the file where you would input all of your dependencies that you plan to use with Carthage. You can create it by entering

touch Cartfile

in Terminal at your project's root folder. Once you open the Cartfile, you can copy/paste below line and save the changes.

github "harness/ff-ios-client-sdk"

Now, you need to run

carthage update --no-build

This command will fetch the source for ff-ios-client-sdk from the repository specified in the Cartfile.

You will now have a new folder, named Carthage at the same location your Cartfile and your .xcodeproj are. Within the Carthage folder, you will see another Checkout folder where the source code is located. Next, we need to create a project for ff-ios-client-sdk dependency. We can do this easily by entering the following in the termial.

//From your project's root folder
cd Carthage/Checkouts/ff-ios-client-sdk

followed by

swift package generate-xcodeproj

...or, you can enter it all on the same line.

//From your project's root folder
cd Carthage/Checkouts/ff-ios-client-sdk && swift package generate-xcodeproj

Go back into your project's root folder and enter the next command:

carthage build --use-xcframeworks --platform iOS

This command will build the project and place it in the Build folder next to Checkouts. On your application targets’ General settings tab, in the Frameworks, Libraries, and Embedded Content section, drag and drop the .xcframework file from the Carthage/Build folder. In the "Embed" section, select "Embed & Sign".

Only thing left to do is:

import ff_ios_client_sdk

...wherever you need to use ff-ios-client-sdk

When a new version of ff-ios-client-sdk is available and you wish to update this dependency, run

$ carthage update --use-xcframeworks --platform iOS

And your embedded library will be updated.

Code Sample

The following is a complete code example that you can use to test the harnessappdemodarkmode Flag you created on the Harness Platform. When you run the code it will:

  1. Connect to the FF service.
  2. Report the value of the Flag every 10 seconds until the connection is closed. Every time the harnessappdemodarkmode Flag is toggled on or off on the Harness Platform, the updated value is reported.
  3. Close the SDK.

To use this sample, copy it into your project and enter your SDK key into the apiKey field.

import UIKit
import ff_ios_client_sdk
class ViewController: UIViewController {
  override func viewDidLoad() {
    super.viewDidLoad()
    NSLog("Start")
    let config = CfConfiguration.builder()
      .setStreamEnabled(true)
      .build()
    let target = CfTarget.builder().setIdentifier("Harness").build()
    CfClient.sharedInstance.initialize(
      apiKey: "apiKey",
      configuration:config,
      target: target
    ) { [weak self] result in
      switch result {
        case .failure(let error):
          NSLog("End: Error \(error)")
        case .success():
          NSLog("Init: Ok")
          CfClient.sharedInstance.boolVariation(evaluationId: "EVALUATION_ID", { (eval) in
            print("Value: \(eval!)")
          })
          CfClient.sharedInstance.registerEventsListener() { (result) in
            switch result {
              case .failure(let error):
                print(error)
              case .success(let eventType):
                switch eventType {
                  case .onPolling:
                    print("Event: Received all evaluation flags")
                  case .onEventListener(let evaluation):
                    print("Event: Received an evaluation flag, \(evaluation!)")
                  case .onComplete:
                    print("Event: SSE stream has completed")
                  case .onOpen:
                    print("Event: SSE stream has been opened")
                  case .onMessage(let messageObj):
                    print(messageObj?.event ?? "Event: Message received")
                }
            }
          }
      }
    }
  }
  override func viewWillDisappear(_ animated: Bool) {
    CfClient.sharedInstance.destroy()
    NSLog("End: Ok")
    super.viewWillDisappear(animated)
  }
}

Additional Reading

For further examples and config options:

For more information about Feature Flags, see our Feature Flags documentation.

GitHub

link
Stars: 3
Last commit: 3 weeks ago
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Release Notes

1.2.0
3 weeks ago

What's Changed

Full Changelog: https://github.com/harness/ff-ios-client-sdk/compare/1.1.3...1.2.0

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