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セッションリプレイiOSセグメント連携
この記事では、セッションリプレイiOSセグメントプラグインを使用したセッションリプレイのインストールについて説明します。アプリがSegmentのAnalytics-SwiftライブラリとAmplitude(アクション)の送信先を使用している場合にこのオプションを使用します。
アプリがAmplitude iOS SDKを使用している場合は、セッションリプレイiOS SDKプラグインを使用してください。
セグメントを他のオプションと組み合わせて使用する場合は、スタンドアロンの実装を選択してください。
Session Replay and performance
Amplitude built Session Replay to minimize impact on the performance of the iOS apps in which it's installed by:
- Asynchronously processing replay data, to avoid blocking the main user interface thread. The main thread must be used to interact with the view hierarchy, but all processing is performed on a background queue.
- Using batching and lightweight compression to reduce the number of network connections and bandwidth.
- Optimizing view hierarchy processing. Contact Amplitude if you experience issues with hierarchy processing.
セッションリプレイ は、アプリケーションのビューツリー(メインビューとそのすべての子ビュー)に対する変更を再帰的にキャプチャします。その後、 セッションリプレイ はこれらの変更を再生して、ビデオのような再生を構築します。セッションの開始時に、 セッションリプレイ はアプリケーションのビューツリーの完全なスナップショットをキャプチャします。ユーザーがアプリとやり取りするときに、セッションリプレイはビューの変更をそれぞれdiffとしてキャプチャします。リプレイを視聴すると、 セッションリプレイ は各差分を順番に元のビューツリーに適用します。セッションリプレイには最大長はありません。
問題の報告
iOS用セッションリプレイに関する問題を報告される場合は、AmplitudeSessionReplay-ios GitHubリポジトリにアクセスしてください。
始める前に
セッションリプレイiOSセグメントプラグインには以下が必要です。
- アプリケーションは iOS または iPadOS 上で実行されます。
- 取り込みにはセグメントのAnalytics-Swiftライブラリを使用します。
- SegmentのAmplitude(アクション)送信先を使用します。
- SegmentのAmplitudeプラグインを使用しています。
Supported iOS versions
Session Replay supports a minimum target version of iOS 13.
クイックスタート
プラグインの最新バージョンをプロジェクトの依存関係に追加します。
SegmentプラグインはSwiftパッケージマネージャーからのみ利用できます。セッションリプレイを Package.swift ファイルまたは Xcode のパッケージリストに依存関係として追加します。
dependencies: [
.package(url: "https://github.com/amplitude/AmplitudeSessionReplay-iOS", from: "0.12.8")
]
Analytics-Swiftと統合するには、AmplitudeSegmentSessionReplayPluginターゲットを使用します。
.product(name: "AmplitudeSegmentSessionReplayPlugin", package: "AmplitudeSessionReplay")
アプリケーションコードを設定します。
import AmplitudeSegmentSessionReplayPlugin
import Segment
import SegmentAmplitude
// Initialize Segment
let analytics = Analytics(configuration: config)
// Ensure Segment's AmplitudeSession plugin is added before AmplitudeSegmentSessionReplayPlugin
analytics.add(plugin: AmplitudeSession())
// Initialize AmplitudeSegmentSessionReplayPlugin with your Amplitude API key
analytics.add(plugin: AmplitudeSegmentSessionReplayPlugin(amplitudeApiKey: API_KEY,
sampleRate: 0.1))
設定
セッションリプレイプラグインを初期化する際には、次のオプションを渡します。
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
amplitudeApiKey | String | Yes | n/a | Sets the Amplitude API key. The Segment plugin requires this value to send replays to Amplitude. |
sampleRate | Float | No | 0 | Use this option to control how many sessions to select for replay collection. The number should be a decimal between 0 and 1 (for example, 0.4), representing the fraction of sessions to have randomly selected for replay collection. Over a large number of sessions, 0.4 would select 40% of those sessions. |
serverZone | ServerZone | No | .US | EU or US. Sets the Amplitude server zone. Set this to EU for Amplitude projects created in EU data center. |
enableRemoteConfig | Bool | No | true | Enables or disables remote configuration for this instance of Session Replay. |
autoStart | Bool | No | true | Controls whether Session Replay begins capturing automatically when it initializes. |
maskLevel | MaskLevel | No | .medium | Sets how much on-screen content Session Replay masks. Use .light, .medium, or .conservative. For more detail, refer to Mask level. |
captureWebViews | Bool | No | false | Enables capture of web view content. By default, Session Replay blocks web views. |
webviewMappings | [String: String] | No | [:] | Maps substrings in captured web view content to replacement values. When you enable captureWebViews, Session Replay applies each entry as a case-insensitive find-and-replace on the web view recording data before upload. This is an advanced option; most apps leave it empty. |
recordLogOptions.logCountThreshold | Int | No | 1000 | Use this option to configure the maximum number of logs per session. |
recordLogOptions.maxMessageLength | Int | No | 2000 | Use this option to configure the maximum length of a log message. |
quality | QualityProfile | No | .high | Controls capture and encoding quality (for example, frame rate and image resolution). Use .low, .medium, or .high to balance replay fidelity with performance and storage. Use QualityProfile.automatic to let the SDK choose a profile based on the device. |
uploadConfig | UploadConfig | No | UploadConfig() | Controls when Session Replay uploads data. Use UploadConfig(disableMeteredUploads: true) to pause uploads on metered networks (for example, cellular). |
Remote configuration
Enable remote configuration to set Sample Rate and Masking Level in Amplitude.
Remote configuration and testing
When you enable remote configuration, settings you define in Amplitude take precedence over settings you define locally in the SDK. As a result, while testing your application, you should disable remote configuration to ensure you can set sampleRate to 1, and ensure you capture test sessions.
Block on-screen data
Session Replay supports three ways to block sensitive on-screen data. Masking setting for WebViews is in the Web view support section.
Mask level
Session Replay for iOS supports three levels of masking, configurable with the maskLevel option.
Use this option in the Session Replay configuration.
| Mask level | Description |
|---|---|
light | Masks all passwords, email addresses, credit card numbers, and phone numbers. |
medium | Masks all editable text views. |
conservative | Masks all text views. |
Privacy methods for UIKit
Session Replay provides an extension on UIView to manage privacy. Import the Session Replay library to access it.
import AmplitudeSessionReplay
| Variable | Description |
|---|---|
amp_isBlocked | Set view.amp_isBlocked to selectively replace a view and its subviews with a placeholder in session replays. UITextViews and UITextFields are automatically blocked. To unblock a view that is masked by default, set the this value to false |
Privacy Modifiers for SwiftUI
Session Replay provides an extension on View to manage privacy. Import the Session Replay Library to access it.
import AmplitudeSessionReplay
| Modifier | Description |
|---|---|
amp_setBlocked(_ blocked: Bool) | Add the amp_setBlocked() modifier to a View to selectively replace a view and its subviews with a placeholder in session replays. To unblock a view that is masked by default, set the this value to false |
ユーザーのオプトアウト
ユーザーがセッションリプレイをオプトアウトしたことを示すために、プラグインでoptOutを設定します。
// Pass a boolean value to indicate a users opt-out status
amplitudeSegmentSessionReplayPlugin.optOut = true
EU data residency
Session Replay is available to Amplitude Customers who use the EU data center. Set the serverZone configuration option to EU during initialization. For example:
// Set serverZone on the AmplitudeSegmentSessionReplayPlugin
let plugin = AmplitudeSegmentSessionReplayPlugin(amplitudeApiKey: API_KEY,
sampleRate: 0.1,
serverZone: .EU)
Sampling rate
By default, Session Replay captures 0% of sessions for replay. Use the sampleRate configuration option to set the percentage of total sessions that Session Replay captures. For example:
To set the sampleRate consider the monthly quota on your Session Replay plan. For example, if your monthly quota is 2,500,000 sessions, and you average 3,000,000 monthly sessions, your quota is 83% of your average sessions. In this case, to ensure sampling lasts through the month, set sampleRate to .83 or lower.
Keep the following in mind as you consider your sample rate:
- When you reach your monthly session quota, Amplitude stops capturing sessions for replay.
- Session quotas reset on the first of every month.
- Use sample rate to distribute your session quota over the course of a month, rather than using your full quota at the beginning of the month.
- To find the best sample rate, Amplitude recommends that you start low, for example
.01. If this value doesn't capture enough replays, raise the rate over the course of a few days. For ways to monitor the number of session replays captured, see View the number of captured sessions. - Replays with processing errors don't count toward your monthly quota. Replays with a retention error message have already been counted against the quota, when the session was still in the retention period.
// This configuration samples 1% of all sessions
analytics.add(plugin: AmplitudeSegmentSessionReplayPlugin(amplitudeApiKey: API_KEY,
sampleRate: 0.01))
録画品質
再生の忠実度と、パフォーマンスおよびストレージのバランスを調整するには、品質プロファイルを選択します。プロファイルが小さいほど、キャプチャフレームレートが低くなり、画像解像度も低くなります。プロファイルが高いほど、フレームレートと解像度が高くなります。SDKがデバイスに基づいてプロファイルを選択できるようにする場合は、QualityProfile.automaticを使用します。たとえば、SDK は新しいデバイスでは高値を選択し、古いデバイスでは低値を選択します。
// Use automatic profile selection based on device
analytics.add(plugin: AmplitudeSegmentSessionReplayPlugin(amplitudeApiKey: API_KEY,
sampleRate: 0.1,
quality: .automatic))
// Or set a fixed profile (low, medium, or high)
analytics.add(plugin: AmplitudeSegmentSessionReplayPlugin(amplitudeApiKey: API_KEY,
sampleRate: 0.1,
quality: .medium))
従量課金制ネットワークでのアップロードを無効にする
デバイスが従量課金制ネットワークに接続されている間は、セッションリプレイのアップロードを一時停止し、ユーザーのモバイルデータの使用を避けてください。セッションリプレイは引き続きデータをローカルに記録します。デバイスがWi-Fi、またはその他の従量制ではない接続に再接続されると、アップロードが再開されます。
analytics.add(plugin: AmplitudeSegmentSessionReplayPlugin(amplitudeApiKey: API_KEY,
sampleRate: 0.1,
uploadConfig: UploadConfig(disableMeteredUploads: true)))
リプレイ収集を無効にする
セッションリプレイを有効にした後は、次のいずれかの条件までアプリ上で実行されます。
- ユーザーがアプリを離れる。
amplitudeSegmentSessionReplayPlugin.stop()呼び出します。analytics.remove(plugin: amplitudeSegmentSessionReplayPlugin)を使用して、セグメントからこのプラグインを削除します。
ユーザーがアプリの制限付きエリアに移動する前にamplitudeSegmentSessionReplayPlugin.stop()を呼び出して、ユーザーがそのエリアにいる間のリプレイ収集を無効にします。
参照の保持
SessionReplayPluginインスタンスへの参照を保持します:let amplitudeSegmentSessionReplayPlugin = AmplitudeSegmentSessionReplayPlugin(/* session replay options */)。
ユーザーがアプリの制限のないエリアに戻ったときに、amplitudeSegmentSessionReplayPlugin.start()を呼び出してリプレイ収集を再度有効にします。
特定の画面のみをキャプチャするには、起動時に起動しないようにautoStart: falseでプラグインを初期化し、ユーザーがこれらの画面に出入りするときに、start()およびstop()を呼び出します。
// Add the plugin once, without starting capture
let amplitudeSegmentSessionReplayPlugin = AmplitudeSegmentSessionReplayPlugin(amplitudeApiKey: API_KEY,
sampleRate: 1.0,
autoStart: false)
analytics.add(plugin: amplitudeSegmentSessionReplayPlugin)
// Start capture when the user enters a screen you want to record
amplitudeSegmentSessionReplayPlugin.start()
// Stop capture when the user leaves that screen
amplitudeSegmentSessionReplayPlugin.stop()
また、Amplitude Experimentなどのフィーチャーフラグプロダクトを使用して、場所などの基準に基づいてリプレイ収集を有効または無効にするロジックを作成することもできます。たとえば、特定のユーザーグループを対象とするフィーチャーフラグを作成し、そのフラグを初期化ロジックに追加します。
import AmplitudeSegmentSessionReplayPlugin
import Segment
import SegmentAmplitude
// Your existing initialization logic with Segment
let analytics = Analytics(configuration: config)
analytics.add(plugin: AmplitudeSession())
if (nonEUCountryFlagEnabled) {
// Create and Install Session Replay Plugin
let amplitudeSegmentSessionReplayPlugin = AmplitudeSegmentSessionReplayPlugin(amplitudeApiKey: API_KEY, sampleRate: 0.1)
analytics.add(plugin: amplitudeSegmentSessionReplayPlugin)
}
Web view support (Beta)
By default, Session Replay blocks web views in a capture. To enable capture of all WebView components, set captureWebViews to true in the Session Replay configuration.
To mask specific WebView components, use the privacy methods described in Block on-screen data.
// UIKit
webView.amp_isBlocked = false
Map View Support (Alpha)
Session Replay supports capturing map views in iOS applications. To enable map view capture, unmask the map view in your implementation.
// UIKit
mapView.amp_isBlocked = false
// SwiftUI
Map().amp_setBlocked(false)
Log Recording
Availability
AmplitudeSessionReplay 0.8.0 and later support log recording.
Session Replay supports recording logs in iOS applications. Configure the limits with recordLogOptions when you initialize the integration, then send log messages through recordLog(level:message:date:).
import AmplitudeSessionReplay
let sessionReplay = SessionReplay(
apiKey: API_KEY,
recordLogOptions: .init(logCountThreshold: 2000, maxMessageLength: 4000)
)
sessionReplay.recordLog(level: .error, message: "This is an error log")
If you have implemented a log system, you can make single-point modifications to integrate log recording functionality. See the following examples for more information.
CocoaLumberjack
If you use CocoaLumberjack, you can integrate it with a custom logger provider.
class AmplitudeLogRecordLogger: DDAbstractLogger {
private weak var plugin: SessionReplayPlugin?
init(_ plugin: SessionReplayPlugin) {
self.plugin = plugin
}
override func log(message logMessage: DDLogMessage) {
let recordLevel: RecordLogLevel
switch logMessage.flag {
case .error:
recordLevel = .error
case .warning:
recordLevel = .warn
case .info:
recordLevel = .log
default:
return
}
plugin?.recordLog(level: recordLevel,
message: logMessage.message,
date: logMessage.timestamp)
}
}
let sessionReplayPlugin = AmplitudeSwiftSessionReplayPlugin()
amplitude.add(plugin: sessionReplayPlugin)
DDLog.add(AmplitudeLogRecordLogger(sessionReplayPlugin))
React Native
If you use console log or react-native-logs with consoleTransport, you can integrate it with RCTAddLogFunction.
RCTAddLogFunction { level, source, fileName, lineNumber, message in
let recordLevel: RecordLogLevel
switch level {
case .error:
recordLevel = .error
case .warning:
recordLevel = .warn
case .info:
recordLevel = .log
case .fatal:
recordLevel = .error
case .trace:
recordLevel = .init("trace")
default:
return
}
self.sessionReplayPlugin.recordLog(level: recordLevel, message: message)
}
Data retention, deletion, and privacy
Session replay uses existing Amplitude tools and APIs to handle privacy and deletion requests. <!--vale off-->
Consent management and Session Replay
While privacy laws and regulations vary across states and countries, certain constants exist, including the requirements to disclose in a privacy notice the categories of personal information you are collecting, the purposes for its use, and the categories of third parties with which personal information is shared. When implementing a session replay tool, you should review your privacy notice to make sure your disclosures remain accurate and complete. And as a best practice, review your notice with legal counsel to make sure it complies with the constantly evolving privacy laws and requirements applicable to your business and personal information data practices.
Retention period
If your Amplitude plan includes Session Replay, Amplitude retains raw replay data for 30 days from the date of ingestion.
If you purchase extra session volume, Amplitude retains raw replay data for 90 days from the date of ingestion. If you need a more strict policy, contact Amplitude support to set the value to 30 days.
Changes to the retention period impact replays ingested after the change. Sessions captured and ingested before a retention period change retain the previous retention period.
Retention periods are set at the organization level. Replays that are outside of the retention period aren't viewable in Amplitude.
DSAR API
The Amplitude DSAR API returns metadata about session replays, but not the raw replay data. All events that are part of a session replay include a [Amplitude] Session Replay ID event property. This event provides information about the sessions collected for replay for the user, and includes all metadata collected with each event.
{
"amplitude_id": 123456789,
"app": 12345,
"event_time": "2020-02-15 01:00:00.123456",
"event_type": "first_event",
"server_upload_time": "2020-02-18 01:00:00.234567",
"device_id": "your device id",
"user_properties": { ... }
"event_properties": {
"[Amplitude] Session Replay ID": "cb6ade06-cbdf-4e0c-8156-32c2863379d6/1699922971244"
}
"session_id": 1699922971244,
}
Data deletion
Session Replay uses Amplitude's User Privacy API to handle deletion requests. Successful deletion requests remove all session replays for the specified user.
When you delete the Amplitude project on which you use Session Replay, Amplitude deletes that replay data.
Bot filter
Session Replay uses the same block filter available in the Amplitude app. Session Replay doesn't block traffic based on event or user properties.
Session Replay storage
If a user opts out tracking in your app, use the optOut configuration option to disable replay collection for that user.
Session Replay temporarily stores replay data data on the file system before it is uploaded. At every initialization, the least recent replays are trimmed to bring the total disk usage down to a maximum size.
Known limitations
Keep the following limitations in mind as you implement Session Replay:
Session Replay doesn't stitch together replays from a single user across multiple projects. For example:
- You instrument multiple apps as separate Amplitude projects with Session Replay enabled in each.
- A known user begins on one app, and then switch to another.
- Amplitude captures both sessions.
- The replay for each session is available for view in the corresponding host project.
The User Sessions chart doesn't show session replays if your organization uses a custom session definition.
Session Replay cannot capture the following iOS views:
- Out-of-process iOS views, such as SFSafariViewController
- AVPlayerLayer backed views
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