For #8172: Add a new "Fenix" Leanplum attribute

app/src/main/java/org/mozilla/fenix/components/metrics/GleanMetricsService.kt

@@ -494,6 +494,7 @@ private val Event.wrapper: EventWrapper<*>?
         is Event.InteractWithSearchURLArea -> null
         is Event.ClearedPrivateData -> null
         is Event.DismissedOnboarding -> null
+        is Event.FennecToFenixMigrated -> null
     }
 
 class GleanMetricsService(private val context: Context) : MetricsService {

app/src/main/java/org/mozilla/fenix/components/metrics/LeanplumMetricsService.kt

@@ -30,6 +30,7 @@ private val Event.name: String?
         is Event.SyncAuthSignOut -> "E_Sign_Out_FxA"
         is Event.ClearedPrivateData -> "E_Cleared_Private_Data"
         is Event.DismissedOnboarding -> "E_Dismissed_Onboarding"
+        is Event.FennecToFenixMigrated -> "E_Fennec_To_Fenix_Migrated"
 
         // Do not track other events in Leanplum
         else -> ""
@@ -94,7 +95,8 @@ class LeanplumMetricsService(private val application: Application) : MetricsServ
             "klar_installed" to installedApps.contains(MozillaProductDetector.MozillaProducts.KLAR.productName),
             "fxa_signed_in" to application.settings().fxaSignedIn,
             "fxa_has_synced_items" to application.settings().fxaHasSyncedItems,
-            "search_widget_installed" to application.settings().searchWidgetInstalled
+            "search_widget_installed" to application.settings().searchWidgetInstalled,
+            "fenix" to true
         ))
     }
 

app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt

@@ -149,6 +149,7 @@ sealed class Event {
     object RightsTapped : Event()
     object LicensingTapped : Event()
     object LibrariesThatWeUseTapped : Event()
+    object FennecToFenixMigrated : Event()
 
     // Interaction events with extras
 

app/src/main/java/org/mozilla/fenix/migration/MigrationTelemetryListener.kt

@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.fenix
+
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.flow.collect
+import mozilla.components.lib.state.ext.flowScoped
+import mozilla.components.support.base.log.logger.Logger
+import mozilla.components.support.migration.state.MigrationProgress
+import mozilla.components.support.migration.state.MigrationStore
+import org.mozilla.fenix.components.metrics.Event
+import org.mozilla.fenix.components.metrics.MetricController
+
+class MigrationTelemetryListener(
+    private val metrics: MetricController,
+    private val store: MigrationStore
+) {
+    @UseExperimental(ExperimentalCoroutinesApi::class)
+    fun start() {
+        // Observe for migration completed.
+        store.flowScoped { flow ->
+            flow.collect { state ->
+                Logger("MigrationTelemetryListener").debug("Migration state: ${state.progress}")
+                if (state.progress == MigrationProgress.COMPLETED) {
+                    metrics.track(Event.FennecToFenixMigrated)
+                }
+            }
+        }
+    }
+}

app/src/migration/java/org/mozilla/fenix/MigratingFenixApplication.kt

@@ -42,6 +42,13 @@ class MigratingFenixApplication : FenixApplication() {
         )
     }
 
+    val migrationTelemetryListener by lazy {
+        MigrationTelemetryListener(
+            components.analytics.metrics,
+            components.migrationStore
+        )
+    }
+
     override fun setupInMainProcessOnly() {
         // These migrations need to run before regular initialization happens.
         migrateBlocking()
@@ -55,6 +62,7 @@ class MigratingFenixApplication : FenixApplication() {
 
         // The rest of the migrations can happen now.
         migrationPushSubscriber.start()
+        migrationTelemetryListener.start()
         migrator.startMigrationIfNeeded(components.migrationStore, MigrationService::class.java)
     }
 

docs/mma.md

@@ -144,6 +144,11 @@ User Attributes
     <td>A boolean indicating that the user has at least one search widget placed on the home screen</td>
     <td><a href="https://github.com/mozilla-mobile/fenix/pull/4694#issuecomment-520591275">#4694</a></td>
   </tr>
+  <tr>
+    <td>`fenix`</td>
+    <td>A boolean indicating that this is a Fenix installation</td>
+    <td><a href="https://github.com/mozilla-mobile/fenix/pull/8208">#8208</a></td>
+  </tr>
 </table>
 
 Events
@@ -221,6 +226,11 @@ Here is the list of current Events sent, which can be found here in the code bas
     <td>The user finished onboarding. Could be triggered by pressing "start browsing," opening settings, or invoking a search.</td>
     <td><a href="https://github.com/mozilla-mobile/fenix/pull/3459#issuecomment-502191109">#3459</a></td>
   </tr>
+  <tr>
+    <td>`E_Fennec_To_Fenix_Migrated`</td>
+    <td>The user has just migrated from Fennec to Fenix.</td>
+    <td><a href="https://github.com/mozilla-mobile/fenix/pull/8208#issuecomment-584040440">#8208</a></td>
+  </tr>
 </table>
 
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