Migrate RC to depend directly on Installations SDK.

firebase-config/bandwagoner/bandwagoner.gradle

@@ -66,10 +66,8 @@ dependencies {
     implementation project(":firebase-common")
     implementation project(":firebase-components")
 
-    implementation('com.google.firebase:firebase-iid:20.1.5') {
-        exclude group: 'com.google.firebase', module: 'firebase-common'
-        exclude group: 'com.google.firebase', module: 'firebase-components'
-    }
+    implementation project(":firebase-installations-interop")
+    runtimeOnly project(":firebase-installations")
 
     implementation 'com.google.android.gms:play-services-basement:17.0.0'
     implementation 'com.google.android.gms:play-services-tasks:17.0.0'

firebase-config/bandwagoner/src/main/AndroidManifest.xml

@@ -22,7 +22,7 @@
     android:versionName="3.0.0">
 
 
-  <!--Needed for Firebase IID's getToken method.-->
+  <!--Needed for Firebase Installations getToken method.-->
   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
   <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE"/>
 
@@ -43,7 +43,7 @@
 
     <service android:exported="false" android:name="com.google.firebase.components.ComponentDiscoveryService">
       <meta-data
-          android:name="com.google.firebase.components:com.google.firebase.iid.Registrar"
+          android:name="com.google.firebase.components:com.google.firebase.installations.FirebaseInstallationsRegistrar"
           android:value="com.google.firebase.components.ComponentRegistrar"/>
     </service>
 

firebase-config/bandwagoner/src/main/java/com/googletest/firebase/remoteconfig/bandwagoner/ApiFragment.java

@@ -33,7 +33,10 @@
 import androidx.annotation.IdRes;
 import androidx.fragment.app.Fragment;
 import com.google.android.gms.tasks.Task;
-import com.google.firebase.iid.FirebaseInstanceId;
+import com.google.android.gms.tasks.Tasks;
+import com.google.firebase.FirebaseApp;
+import com.google.firebase.installations.FirebaseInstallationsApi;
+import com.google.firebase.installations.InstallationTokenResult;
 import com.google.firebase.remoteconfig.FirebaseRemoteConfig;
 import com.google.firebase.remoteconfig.FirebaseRemoteConfigSettings;
 
@@ -46,20 +49,25 @@
 public class ApiFragment extends Fragment {
 
   private FirebaseRemoteConfig frc;
+  private FirebaseInstallationsApi firebaseInstallations;
   private View rootView;
   private EditText minimumFetchIntervalText;
   private EditText parameterKeyText;
   private TextView parameterValueText;
   private TextView apiCallProgressText;
   private TextView apiCallResultsText;
 
+  private static final String TAG = "Bandwagoner";
+
   @Override
   public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
 
     frc = FirebaseRemoteConfig.getInstance();
     frc.setConfigSettings(
         new FirebaseRemoteConfigSettings.Builder().setDeveloperModeEnabled(true).build());
+
+    firebaseInstallations = FirebaseApp.getInstance().get(FirebaseInstallationsApi.class);
   }
 
   @Override
@@ -87,9 +95,29 @@ public View onCreateView(
     TextView sdkVersionText = rootView.findViewById(R.id.sdk_version_text);
 
     TextView iidText = rootView.findViewById(R.id.iid_text);
-    iidText.setText("IID: " + FirebaseInstanceId.getInstance().getId());
 
-    apiCallResultsText.setText(FirebaseInstanceId.getInstance().getToken());
+    Task<String> installationIdTask = firebaseInstallations.getId();
+    Task<InstallationTokenResult> installationAuthTokenTask = firebaseInstallations.getToken(false);
+
+    Tasks.whenAllComplete(installationIdTask, installationAuthTokenTask)
+        .addOnCompleteListener(
+            unusedCompletedTasks -> {
+              if (installationIdTask.isSuccessful()) {
+                iidText.setText(
+                    String.format("Installation ID: %s", installationIdTask.getResult()));
+              } else {
+                Log.e(TAG, "Error getting installation ID", installationIdTask.getException());
+              }
+
+              if (installationAuthTokenTask.isSuccessful()) {
+                apiCallResultsText.setText(installationAuthTokenTask.getResult().getToken());
+              } else {
+                Log.e(
+                    TAG,
+                    "Error getting installation authentication token",
+                    installationAuthTokenTask.getException());
+              }
+            });
 
     return rootView;
   }

firebase-config/firebase-config.gradle

@@ -85,12 +85,12 @@ dependencies {
     implementation project(':firebase-common')
     implementation project(':firebase-abt')
     implementation project(':firebase-components')
-    implementation('com.google.firebase:firebase-iid:20.1.5') {
-        exclude group: 'com.google.firebase', module: 'firebase-common'
-        exclude group: 'com.google.firebase', module: 'firebase-components'
-    }
+    implementation project(':firebase-installations-interop')
+    runtimeOnly project(':firebase-installations')
+
     implementation 'com.google.firebase:firebase-measurement-connector:18.0.0'
     implementation 'com.google.protobuf:protobuf-lite:3.0.1'
+    implementation 'com.google.android.gms:play-services-tasks:17.0.2'
 
     compileOnly 'com.google.code.findbugs:jsr305:3.0.2'
 

firebase-config/ktx/ktx.gradle

@@ -49,10 +49,9 @@ dependencies {
     implementation project(':firebase-common:ktx')
     implementation project(':firebase-config')
     implementation project(':firebase-abt')
-    implementation ('com.google.firebase:firebase-iid:20.1.5') {
-        exclude group: 'com.google.firebase', module: 'firebase-common'
-        exclude group: 'com.google.firebase', module: 'firebase-components'
-    }
+    implementation project(':firebase-installations-interop')
+    runtimeOnly project(':firebase-installations')
+
     implementation 'androidx.annotation:annotation:1.1.0'
 
     testImplementation "org.robolectric:robolectric:$robolectricVersion"

firebase-config/ktx/src/test/kotlin/com/google/firebase/remoteconfig/TestConstructorUtil.kt

@@ -22,14 +22,14 @@ import com.google.firebase.remoteconfig.internal.ConfigGetParameterHandler
 import com.google.firebase.remoteconfig.internal.ConfigMetadataClient
 import java.util.concurrent.Executor
 import com.google.firebase.abt.FirebaseABTesting
-import com.google.firebase.iid.FirebaseInstanceId
+import com.google.firebase.installations.FirebaseInstallationsApi
 
 // This method is a workaround for testing. It enable us to create a FirebaseRemoteConfig object
 // with mocks using the package-private constructor.
 fun createRemoteConfig(
     context: Context?,
     firebaseApp: FirebaseApp,
-    firebaseInstanceId: FirebaseInstanceId,
+    firebaseInstallations: FirebaseInstallationsApi,
     firebaseAbt: FirebaseABTesting?,
     executor: Executor,
     fetchedConfigsCache: ConfigCacheClient,
@@ -42,7 +42,7 @@ fun createRemoteConfig(
         return FirebaseRemoteConfig(
             context,
             firebaseApp,
-            firebaseInstanceId,
+            firebaseInstallations,
             firebaseAbt,
             executor,
             fetchedConfigsCache,

firebase-config/ktx/src/test/kotlin/com/google/firebase/remoteconfig/ktx/RemoteConfigTests.kt

@@ -27,7 +27,7 @@ import com.google.firebase.remoteconfig.internal.ConfigFetchHandler
 import com.google.firebase.remoteconfig.internal.ConfigGetParameterHandler
 import com.google.firebase.remoteconfig.internal.ConfigMetadataClient
 import com.google.common.util.concurrent.MoreExecutors
-import com.google.firebase.iid.FirebaseInstanceId
+import com.google.firebase.installations.FirebaseInstallationsApi
 import com.google.firebase.ktx.app
 import com.google.firebase.ktx.initialize
 import org.junit.After
@@ -129,7 +129,7 @@ class ConfigTests : BaseTestCase() {
         val remoteConfig = createRemoteConfig(
             context = null,
             firebaseApp = Firebase.app(EXISTING_APP),
-            firebaseInstanceId = mock(FirebaseInstanceId::class.java),
+            firebaseInstallations = mock(FirebaseInstallationsApi::class.java),
             firebaseAbt = null,
             executor = directExecutor,
             fetchedConfigsCache = mock(ConfigCacheClient::class.java),

firebase-config/src/androidTest/java/com/google/firebase/remoteconfig/FirebaseRemoteConfigIntegrationTest.java

@@ -30,7 +30,7 @@
 import com.google.firebase.FirebaseApp;
 import com.google.firebase.FirebaseOptions;
 import com.google.firebase.abt.FirebaseABTesting;
-import com.google.firebase.iid.FirebaseInstanceId;
+import com.google.firebase.installations.FirebaseInstallationsApi;
 import com.google.firebase.remoteconfig.internal.ConfigCacheClient;
 import com.google.firebase.remoteconfig.internal.ConfigContainer;
 import com.google.firebase.remoteconfig.internal.ConfigFetchHandler;
@@ -64,7 +64,7 @@ public class FirebaseRemoteConfigIntegrationTest {
   @Mock private ConfigCacheClient mockFireperfActivatedCache;
 
   @Mock private FirebaseABTesting mockFirebaseAbt;
-  @Mock private FirebaseInstanceId mockFirebaseInstanceId;
+  @Mock private FirebaseInstallationsApi mockFirebaseInstallations;
   private FirebaseRemoteConfig frc;
 
   // We use a HashMap so that Mocking is easier.
@@ -96,7 +96,7 @@ public void setUp() {
         new FirebaseRemoteConfig(
             context,
             firebaseApp,
-            mockFirebaseInstanceId,
+            mockFirebaseInstallations,
             mockFirebaseAbt,
             directExecutor,
             mockFetchedCache,

firebase-config/src/main/java/com/google/firebase/remoteconfig/FirebaseRemoteConfig.java

@@ -26,8 +26,8 @@
 import com.google.firebase.FirebaseApp;
 import com.google.firebase.abt.AbtException;
 import com.google.firebase.abt.FirebaseABTesting;
-import com.google.firebase.iid.FirebaseInstanceId;
-import com.google.firebase.iid.InstanceIdResult;
+import com.google.firebase.installations.FirebaseInstallationsApi;
+import com.google.firebase.installations.InstallationTokenResult;
 import com.google.firebase.remoteconfig.internal.ConfigCacheClient;
 import com.google.firebase.remoteconfig.internal.ConfigContainer;
 import com.google.firebase.remoteconfig.internal.ConfigFetchHandler;
@@ -66,10 +66,12 @@ public class FirebaseRemoteConfig {
    * <p>{@link FirebaseRemoteConfig} uses the default {@link FirebaseApp}, so if no {@link
    * FirebaseApp} has been initialized yet, this method throws an {@link IllegalStateException}.
    *
-   * <p>To identify the current app instance, the fetch request creates a Firebase Instance ID
-   * token, which periodically sends data to the Firebase backend. To stop the periodic sync, call
-   * {@link com.google.firebase.iid.FirebaseInstanceId#deleteInstanceId}. To create a new token and
-   * resume the periodic sync, call {@code fetchConfig} again.
+   * <p>Note: Also initializes the Firebase installations SDK that creates installation IDs to
+   * identify Firebase installations and periodically sends data to Firebase servers. Remote Config
+   * requires installation IDs for Fetch requests. To stop the periodic sync, call {@link
+   * com.google.firebase.installations.FirebaseInstallations#delete}. Sending a Fetch request after
+   * deletion will create a new installation ID for this Firebase installation and resume the
+   * periodic sync.
    *
    * @return A singleton instance of {@link FirebaseRemoteConfig} for the default {@link
    *     FirebaseApp}.
@@ -149,7 +151,7 @@ public static FirebaseRemoteConfig getInstance(@NonNull FirebaseApp app) {
   private final ConfigFetchHandler fetchHandler;
   private final ConfigGetParameterHandler getHandler;
   private final ConfigMetadataClient frcMetadata;
-  private final FirebaseInstanceId firebaseInstanceId;
+  private final FirebaseInstallationsApi firebaseInstallations;
 
   /**
    * Firebase Remote Config constructor.
@@ -159,7 +161,7 @@ public static FirebaseRemoteConfig getInstance(@NonNull FirebaseApp app) {
   FirebaseRemoteConfig(
       Context context,
       FirebaseApp firebaseApp,
-      FirebaseInstanceId firebaseInstanceId,
+      FirebaseInstallationsApi firebaseInstallations,
       @Nullable FirebaseABTesting firebaseAbt,
       Executor executor,
       ConfigCacheClient fetchedConfigsCache,
@@ -170,7 +172,7 @@ public static FirebaseRemoteConfig getInstance(@NonNull FirebaseApp app) {
       ConfigMetadataClient frcMetadata) {
     this.context = context;
     this.firebaseApp = firebaseApp;
-    this.firebaseInstanceId = firebaseInstanceId;
+    this.firebaseInstallations = firebaseInstallations;
     this.firebaseAbt = firebaseAbt;
     this.executor = executor;
     this.fetchedConfigsCache = fetchedConfigsCache;
@@ -191,14 +193,16 @@ public Task<FirebaseRemoteConfigInfo> ensureInitialized() {
     Task<ConfigContainer> defaultsConfigsTask = defaultConfigsCache.get();
     Task<ConfigContainer> fetchedConfigsTask = fetchedConfigsCache.get();
     Task<FirebaseRemoteConfigInfo> metadataTask = Tasks.call(executor, this::getInfo);
-    Task<InstanceIdResult> instanceIdTask = firebaseInstanceId.getInstanceId();
+    Task<String> installationIdTask = firebaseInstallations.getId();
+    Task<InstallationTokenResult> installationTokenTask = firebaseInstallations.getToken(false);
 
     return Tasks.whenAllComplete(
             activatedConfigsTask,
             defaultsConfigsTask,
             fetchedConfigsTask,
             metadataTask,
-            instanceIdTask)
+            installationIdTask,
+            installationTokenTask)
         .continueWith(executor, (unusedListOfCompletedTasks) -> metadataTask.getResult());
   }
 
@@ -301,10 +305,12 @@ public Task<Boolean> activate() {
    * FirebaseRemoteConfigSettings.Builder#setMinimumFetchIntervalInSeconds(long)}; the static
    * default is 12 hours.
    *
-   * <p>To identify the current app instance, the fetch request creates a Firebase Instance ID
-   * token, which periodically sends data to the Firebase backend. To stop the periodic sync, call
-   * {@link com.google.firebase.iid.FirebaseInstanceId#deleteInstanceId}. To create a new token and
-   * resume the periodic sync, call {@code fetchConfig} again.
+   * <p>Note: Also initializes the Firebase installations SDK that creates installation IDs to
+   * identify Firebase installations and periodically sends data to Firebase servers. Remote Config
+   * requires installation IDs for Fetch requests. To stop the periodic sync, call {@link
+   * com.google.firebase.installations.FirebaseInstallations#delete}. Sending a Fetch request after
+   * deletion will create a new installation ID for this Firebase installation and resume the
+   * periodic sync.
    *
    * @return {@link Task} representing the {@code fetch} call.
    */
@@ -324,10 +330,12 @@ public Task<Void> fetch() {
    * <p>Depending on the time elapsed since the last fetch from the Firebase Remote Config backend,
    * configs are either served from local storage, or fetched from the backend.
    *
-   * <p>To identify the current app instance, the fetch request creates a Firebase Instance ID
-   * token, which periodically sends data to the Firebase backend. To stop the periodic sync, call
-   * {@link com.google.firebase.iid.FirebaseInstanceId#deleteInstanceId}. To create a new token and
-   * resume the periodic sync, call {@code fetchConfig} again.
+   * <p>Note: Also initializes the Firebase installations SDK that creates installation IDs to
+   * identify Firebase installations and periodically sends data to Firebase servers. Remote Config
+   * requires installation IDs for Fetch requests. To stop the periodic sync, call {@link
+   * com.google.firebase.installations.FirebaseInstallations#delete}. Sending a Fetch request after
+   * deletion will create a new installation ID for this Firebase installation and resume the
+   * periodic sync.
    *
    * @param minimumFetchIntervalInSeconds If configs in the local storage were fetched more than
    *     this many seconds ago, configs are served from the backend instead of local storage.

firebase-config/src/main/java/com/google/firebase/remoteconfig/RemoteConfigComponent.java

@@ -26,7 +26,7 @@
 import com.google.firebase.FirebaseApp;
 import com.google.firebase.abt.FirebaseABTesting;
 import com.google.firebase.analytics.connector.AnalyticsConnector;
-import com.google.firebase.iid.FirebaseInstanceId;
+import com.google.firebase.installations.FirebaseInstallationsApi;
 import com.google.firebase.remoteconfig.internal.ConfigCacheClient;
 import com.google.firebase.remoteconfig.internal.ConfigFetchHandler;
 import com.google.firebase.remoteconfig.internal.ConfigFetchHttpClient;
@@ -76,7 +76,7 @@ public class RemoteConfigComponent {
   private final Context context;
   private final ExecutorService executorService;
   private final FirebaseApp firebaseApp;
-  private final FirebaseInstanceId firebaseInstanceId;
+  private final FirebaseInstallationsApi firebaseInstallations;
   private final FirebaseABTesting firebaseAbt;
   @Nullable private final AnalyticsConnector analyticsConnector;
 
@@ -89,14 +89,14 @@ public class RemoteConfigComponent {
   RemoteConfigComponent(
       Context context,
       FirebaseApp firebaseApp,
-      FirebaseInstanceId firebaseInstanceId,
+      FirebaseInstallationsApi firebaseInstallations,
       FirebaseABTesting firebaseAbt,
       @Nullable AnalyticsConnector analyticsConnector) {
     this(
         context,
         Executors.newCachedThreadPool(),
         firebaseApp,
-        firebaseInstanceId,
+        firebaseInstallations,
         firebaseAbt,
         analyticsConnector,
         new LegacyConfigsHandler(context, firebaseApp.getOptions().getApplicationId()),
@@ -109,15 +109,15 @@ protected RemoteConfigComponent(
       Context context,
       ExecutorService executorService,
       FirebaseApp firebaseApp,
-      FirebaseInstanceId firebaseInstanceId,
+      FirebaseInstallationsApi firebaseInstallations,
       FirebaseABTesting firebaseAbt,
       @Nullable AnalyticsConnector analyticsConnector,
       LegacyConfigsHandler legacyConfigsHandler,
       boolean loadGetDefault) {
     this.context = context;
     this.executorService = executorService;
     this.firebaseApp = firebaseApp;
-    this.firebaseInstanceId = firebaseInstanceId;
+    this.firebaseInstallations = firebaseInstallations;
     this.firebaseAbt = firebaseAbt;
     this.analyticsConnector = analyticsConnector;
 
@@ -156,7 +156,7 @@ public synchronized FirebaseRemoteConfig get(String namespace) {
     return get(
         firebaseApp,
         namespace,
-        firebaseInstanceId,
+        firebaseInstallations,
         firebaseAbt,
         executorService,
         fetchedCacheClient,
@@ -171,7 +171,7 @@ public synchronized FirebaseRemoteConfig get(String namespace) {
   synchronized FirebaseRemoteConfig get(
       FirebaseApp firebaseApp,
       String namespace,
-      FirebaseInstanceId firebaseInstanceId,
+      FirebaseInstallationsApi firebaseInstallations,
       FirebaseABTesting firebaseAbt,
       Executor executor,
       ConfigCacheClient fetchedClient,
@@ -185,7 +185,7 @@ synchronized FirebaseRemoteConfig get(
           new FirebaseRemoteConfig(
               context,
               firebaseApp,
-              firebaseInstanceId,
+              firebaseInstallations,
               isAbtSupported(firebaseApp, namespace) ? firebaseAbt : null,
               executor,
               fetchedClient,
@@ -240,7 +240,7 @@ ConfigFetchHttpClient getFrcBackendApiClient(
   synchronized ConfigFetchHandler getFetchHandler(
       String namespace, ConfigCacheClient fetchedCacheClient, ConfigMetadataClient metadataClient) {
     return new ConfigFetchHandler(
-        firebaseInstanceId,
+        firebaseInstallations,
         isPrimaryApp(firebaseApp) ? analyticsConnector : null,
         executorService,
         DEFAULT_CLOCK,