Blue Triangle SDK for iOS

Blue Triangle analytics SDK for iOS.

Installation

Xcode 13: go to File > Add Packages…, enter the package repository URL https://github.com/blue-triangle-tech/btt-swift-sdk.git, and click Add Package.

Xcode 11 - 12: go to File > Swift Packages > Add Package Dependency… and enter the package repository URL https://github.com/blue-triangle-tech/btt-swift-sdk.git, then follow the instructions.

Usage

Configuration

Before sending timers you must first configure BlueTriangle. It is recommended to do this in your AppDelegate.application(_:didFinishLaunchingWithOptions:) method:

BlueTriangle.configure { config in
    config.siteID = "MY_SITE_ID"
    config.isReturningVisitor = true
    config.abTestID = "MY_AB_TEST_ID"
    config.campaignMedium = "MY_CAMPAIGN_MEDIUM"
    config.campaignName = "MY_CAMPAIGN_NAME"
    config.campaignSource = "MY_CAMPAIGN_SOURCE"
    config.dataCenter = "MY_DATA_CENTER"
    config.trafficSegmentName = "MY_SEGMENT_NAME"
    config.crashTracking = .nsException
    config.performanceMonitorSampleRate = 1.0
}

Timers

To measure the duration of a user interaction, initialize a Page object describing that interaction and pass it to BlueTriangle.startTimer(page:timerType) to receive a running timer instance.

let page = Page(pageName: "MY_PAGE")
let timer = BlueTriangle.startTimer(page: page)

If you need to defer the start of the timer, pass your Page instance to BlueTriangle.makeTimer(page:timerType) and call the timer’s start() method when you are ready to start timing:

let page = Page(pageName: "MY_PAGE")
let timer = BlueTriangle.makeTimer(page: page)
...
timer.start()

In both cases, pass your timer to BlueTriangle.endTimer(_:purchaseConfirmation:) to send it to the Blue Triangle server.

BlueTriangle.endTimer(timer)

Running timers are automatically stopped when passed to BlueTriangle.endTimer(_:purchaseConfirmation:), though you can end timing earlier by calling the timer’s end() method.

timer.end()
...
// You must still pass the timer to `BlueTriangle.endTimer(_:)` to send it to the Blue Triangle server
BlueTriangle.endTimer(timer)

For timers that are associated with checkout, create a PurchaseConfirmation object to pass along with the timer to BlueTriangle.endTimer(_:purchaseConfirmation:):

timer.end()
let purchaseConfirmation = PurchaseConfirmation(cartValue: 99.00)
BlueTriangle.endTimer(timer, purchaseConfirmation: purchaseConfirmation)

Timer Types

BlueTriangle.makeTimer(page:timerType:) and BlueTriangle.startTimer(page:timerType:) have a timerType parameter to specify the type of the timer they return. By default, both methods return main timers with the type BTTimer.TimerType.main. When network capture is enabled, requests made with one of the bt-prefixed URLSession methods will be associated with the last main timer to have been started at the time the request completes. It is recommended to only have a single main timer running at any given time. If you need overlapping timers, create additional custom timers by specifying a BTTimer.TimerType.custom timer type:

let mainTimer = BlueTriangle.startTimer(page: Page(pageName: "MY_PAGE"))
let customTimer = BlueTriangle.startTimer(page: Page(pageName: "MY_OTHER_TIMER"), timerType: .custom)
// ...
BlueTriangle.endTimer(mainTimer)
// ...
BlueTriangle.endTimer(customTimer)

Network Capture

The Blue Triangle SDK supports capturing network requests using either the NetworkCaptureSessionDelegate or bt-prefixed URLSession methods.

To enable network capture, first configure the SDK with a non-zero network sample rate:

BlueTriangle.configure { config in
    ...
    config.networkSampleRate = 0.05
}

A value of 0.05, for example, means that network capture will be randomly enabled for 5% of user sessions. Network requests using a URLSession with a NetworkCaptureSessionDelegate or made with one of the bt-prefixed URLSession methods will be associated with the last main timer to have been started at the time a request completes. Note that requests are only captured after at least one main timer has been started and they are not associated with a timer until the request ends.

NetworkCaptureSessionDelegate

You can use NetworkCaptureSessionDelegate or a subclass as your URLSession delegate to gather information about network requests when network capture is enabled:

let sesssion = URLSession(
    configuration: .default,
    delegate: NetworkCaptureSessionDelegate(),
    delegateQueue: nil)

let timer = BlueTriangle.startTimer(page: Page(pageName: "MY_PAGE"))
...
let (data, response) = try await session.data(from: URL(string: "https://example.com")!)

URLSession Methods

Alternatively, use bt-prefixed URLSession methods to capture network requests:

Standard	Network Capture
URLSession.dataTask(with:completionHandler:)	URLSession.btDataTask(with:completionHandler:)
URLSession.data(for:delegate:)	URLSession.btData(for:delegate:)
URLSession.dataTaskPublisher(for:)	URLSession.btDataTaskPublisher(for:)

Use these methods just as you would their standard counterparts:

let timer = BlueTriangle.startTimer(page: Page(pageName: "MY_PAGE"))
...
URLSession.shared.btDataTask(with: URL(string: "https://example.com")!) { data, response, error in
    // ...
}.resume()