feat(messaging, android): support BigQuery export setting in firebase.json

the BigQuery export true/false toggle was exposed as a programmatic API before,
but there is also an AndroidManifest.xml setting we may expose via firebase.json

Author: mikehardy

packages/app/firebase-schema.json

@@ -104,6 +104,10 @@
           "description": "On Android, any message which displays a Notification use a default Notification Channel (created by FCM called `Miscellaneous`). This channel contains basic notification settings which may not be appropriate for your application. You can change what Channel is used by updating the `messaging_android_notification_channel_id` property.",
           "type": "string"
         },
+        "messaging_android_notification_delivery_metrics_export_enabled": {
+          "description": "Determines whether Firebase Cloud Messaging exports message delivery metrics to BigQuery. Defaults to disabled.",
+          "type": "boolean"
+        },
         "messaging_android_notification_color": {
           "description": "On Android, any messages which display a Notification do not use a color to tint the content (such as the small icon, title etc). To provide a custom tint color, update the messaging_android_notification_color property with a Android color resource name. \n The library provides a set of predefined colors corresponding to the HTML colors for convenience",
           "type": "string"

packages/messaging/android/build.gradle

@@ -61,10 +61,13 @@ project.ext {
 
 apply from: file('./../../app/android/firebase-json.gradle')
 
-String notificationChannelId = ''
+String defaultNotificationChannelId = ''
+String notificationChannelId = defaultNotificationChannelId
 String defaultNotificationColor = '@color/white'
 String notificationColor = defaultNotificationColor
 
+String deliveryMetricsExportEnabled = 'false'
+
 // If nothing is defined, data collection defaults to true
 String dataCollectionEnabled = 'true'
 
@@ -84,7 +87,10 @@ if (rootProject.ext && rootProject.ext.firebaseJson) {
     }
   }
 
-  notificationChannelId = rnfbConfig.getStringValue('messaging_android_notification_channel_id', '')
+  if (rnfbConfig.isFlagEnabled('messaging_android_notification_delivery_metrics_export_enabled', false)) {
+    deliveryMetricsExportEnabled = 'true'
+  }
+  notificationChannelId = rnfbConfig.getStringValue('messaging_android_notification_channel_id', defaultNotificationChannelId)
   notificationColor = rnfbConfig.getStringValue('messaging_android_notification_color', defaultNotificationColor)
 }
 
@@ -97,6 +103,7 @@ android {
   defaultConfig {
     multiDexEnabled true
     manifestPlaceholders = [
+      firebaseJsonDeliveryMetricsExportEnabled: deliveryMetricsExportEnabled,
       firebaseJsonAutoInitEnabled: dataCollectionEnabled,
       firebaseJsonNotificationChannelId: notificationChannelId,
       firebaseJsonNotificationColor: notificationColor

packages/messaging/android/src/main/AndroidManifest.xml

@@ -24,6 +24,9 @@
       </intent-filter>
     </receiver>
 
+    <meta-data
+      android:name= "delivery_metrics_exported_to_big_query_enabled"
+      android:value="${firebaseJsonDeliveryMetricsExportEnabled}"/>
     <meta-data
       android:name="firebase_messaging_auto_init_enabled"
       android:value="${firebaseJsonAutoInitEnabled}"/>

tests/firebase.json

@@ -16,6 +16,7 @@
 
     "messaging_auto_init_enabled": false,
     "messaging_android_headless_task_timeout": 30000,
+    "messaging_android_notification_delivery_metrics_export_enabled": true,
     "messaging_android_notification_channel_id": "",
     "messaging_android_notification_color": "@color/hotpink",
     "messaging_ios_auto_register_for_remote_messages": false,