Migrate firebase-appcheck-debug to go/firebase-android-executors.

Author: rosalyntan

appcheck/firebase-appcheck-debug/firebase-appcheck-debug.gradle

@@ -41,6 +41,7 @@ android {
 }
 
 dependencies {
+    implementation project(':firebase-annotations')
     implementation project(':firebase-common')
     implementation project(':firebase-components')
     implementation project(':appcheck:firebase-appcheck')
@@ -49,6 +50,7 @@ dependencies {
 
     javadocClasspath 'com.google.auto.value:auto-value-annotations:1.6.6'
 
+    testImplementation project(':integ-testing')
     testImplementation 'junit:junit:4.13-beta-2'
     testImplementation 'org.mockito:mockito-core:2.25.0'
     testImplementation "org.robolectric:robolectric:$robolectricVersion"

appcheck/firebase-appcheck-debug/src/main/java/com/google/firebase/appcheck/debug/FirebaseAppCheckDebugRegistrar.java

@@ -16,13 +16,17 @@
 
 import com.google.android.gms.common.annotation.KeepForSdk;
 import com.google.firebase.FirebaseApp;
+import com.google.firebase.annotations.concurrent.Background;
+import com.google.firebase.annotations.concurrent.Blocking;
 import com.google.firebase.appcheck.debug.internal.DebugAppCheckProvider;
 import com.google.firebase.components.Component;
 import com.google.firebase.components.ComponentRegistrar;
 import com.google.firebase.components.Dependency;
+import com.google.firebase.components.Qualified;
 import com.google.firebase.platforminfo.LibraryVersionComponent;
 import java.util.Arrays;
 import java.util.List;
+import java.util.concurrent.Executor;
 
 /**
  * {@link ComponentRegistrar} for setting up FirebaseAppCheck debug's dependency injections in
@@ -36,16 +40,23 @@ public class FirebaseAppCheckDebugRegistrar implements ComponentRegistrar {
 
   @Override
   public List<Component<?>> getComponents() {
+    Qualified<Executor> backgroundExecutor = Qualified.qualified(Background.class, Executor.class);
+    Qualified<Executor> blockingExecutor = Qualified.qualified(Blocking.class, Executor.class);
+
     return Arrays.asList(
         Component.builder(DebugAppCheckProvider.class)
             .name(LIBRARY_NAME)
             .add(Dependency.required(FirebaseApp.class))
             .add(Dependency.optionalProvider(InternalDebugSecretProvider.class))
+            .add(Dependency.required(backgroundExecutor))
+            .add(Dependency.required(blockingExecutor))
             .factory(
                 (container) ->
                     new DebugAppCheckProvider(
                         container.get(FirebaseApp.class),
-                        container.getProvider(InternalDebugSecretProvider.class)))
+                        container.getProvider(InternalDebugSecretProvider.class),
+                        container.get(backgroundExecutor),
+                        container.get(blockingExecutor)))
             .build(),
         LibraryVersionComponent.create(LIBRARY_NAME, BuildConfig.VERSION_NAME));
   }

appcheck/firebase-appcheck-debug/src/main/java/com/google/firebase/appcheck/debug/internal/DebugAppCheckProvider.java

@@ -24,6 +24,8 @@
 import com.google.android.gms.tasks.TaskCompletionSource;
 import com.google.android.gms.tasks.Tasks;
 import com.google.firebase.FirebaseApp;
+import com.google.firebase.annotations.concurrent.Background;
+import com.google.firebase.annotations.concurrent.Blocking;
 import com.google.firebase.appcheck.AppCheckProvider;
 import com.google.firebase.appcheck.AppCheckToken;
 import com.google.firebase.appcheck.debug.InternalDebugSecretProvider;
@@ -32,27 +34,26 @@
 import com.google.firebase.appcheck.internal.RetryManager;
 import com.google.firebase.inject.Provider;
 import java.util.UUID;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import java.util.concurrent.Executor;
 
 public class DebugAppCheckProvider implements AppCheckProvider {
 
   private static final String TAG = DebugAppCheckProvider.class.getName();
   private static final String UTF_8 = "UTF-8";
 
   private final NetworkClient networkClient;
-  private final ExecutorService backgroundExecutor;
+  private final Executor blockingExecutor;
   private final RetryManager retryManager;
   private final Task<String> debugSecretTask;
 
-  // TODO(b/258273630): Migrate to go/firebase-android-executors
-  @SuppressLint("ThreadPoolCreation")
   public DebugAppCheckProvider(
       @NonNull FirebaseApp firebaseApp,
-      @NonNull Provider<InternalDebugSecretProvider> debugSecretProvider) {
+      @NonNull Provider<InternalDebugSecretProvider> debugSecretProvider,
+      @Background Executor backgroundExecutor,
+      @Blocking Executor blockingExecutor) {
     checkNotNull(firebaseApp);
     this.networkClient = new NetworkClient(firebaseApp);
-    this.backgroundExecutor = Executors.newCachedThreadPool();
+    this.blockingExecutor = blockingExecutor;
     this.retryManager = new RetryManager();
 
     String debugSecret = null;
@@ -61,26 +62,26 @@ public DebugAppCheckProvider(
     }
     this.debugSecretTask =
         debugSecret == null
-            ? determineDebugSecret(firebaseApp, this.backgroundExecutor)
+            ? determineDebugSecret(firebaseApp, backgroundExecutor)
             : Tasks.forResult(debugSecret);
   }
 
   @VisibleForTesting
   DebugAppCheckProvider(
       @NonNull String debugSecret,
       @NonNull NetworkClient networkClient,
-      @NonNull ExecutorService backgroundExecutor,
+      @NonNull Executor blockingExecutor,
       @NonNull RetryManager retryManager) {
     this.networkClient = networkClient;
-    this.backgroundExecutor = backgroundExecutor;
+    this.blockingExecutor = blockingExecutor;
     this.retryManager = retryManager;
     this.debugSecretTask = Tasks.forResult(debugSecret);
   }
 
   @VisibleForTesting
   @NonNull
   static Task<String> determineDebugSecret(
-      @NonNull FirebaseApp firebaseApp, @NonNull ExecutorService executor) {
+      @NonNull FirebaseApp firebaseApp, @NonNull Executor executor) {
     TaskCompletionSource<String> taskCompletionSource = new TaskCompletionSource<>();
     executor.execute(
         () -> {
@@ -111,7 +112,7 @@ public Task<AppCheckToken> getToken() {
             task -> {
               ExchangeDebugTokenRequest request = new ExchangeDebugTokenRequest(task.getResult());
               return Tasks.call(
-                  backgroundExecutor,
+                  blockingExecutor,
                   () ->
                       networkClient.exchangeAttestationForAppCheckToken(
                           request.toJsonString().getBytes(UTF_8),

appcheck/firebase-appcheck-debug/src/test/java/com/google/firebase/appcheck/debug/FirebaseAppCheckDebugRegistrarTest.java

@@ -17,9 +17,13 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import com.google.firebase.FirebaseApp;
+import com.google.firebase.annotations.concurrent.Background;
+import com.google.firebase.annotations.concurrent.Blocking;
 import com.google.firebase.components.Component;
 import com.google.firebase.components.Dependency;
+import com.google.firebase.components.Qualified;
 import java.util.List;
+import java.util.concurrent.Executor;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.robolectric.RobolectricTestRunner;
@@ -37,7 +41,9 @@ public void testGetComponents() {
     assertThat(appCheckDebugComponent.getDependencies())
         .containsExactly(
             Dependency.required(FirebaseApp.class),
-            Dependency.optionalProvider(InternalDebugSecretProvider.class));
+            Dependency.optionalProvider(InternalDebugSecretProvider.class),
+            Dependency.required(Qualified.qualified(Background.class, Executor.class)),
+            Dependency.required(Qualified.qualified(Blocking.class, Executor.class)));
     assertThat(appCheckDebugComponent.isLazy()).isTrue();
   }
 }

appcheck/firebase-appcheck-debug/src/test/java/com/google/firebase/appcheck/debug/internal/DebugAppCheckProviderTest.java

@@ -33,8 +33,9 @@
 import com.google.firebase.appcheck.internal.DefaultAppCheckToken;
 import com.google.firebase.appcheck.internal.NetworkClient;
 import com.google.firebase.appcheck.internal.RetryManager;
+import com.google.firebase.concurrent.TestOnlyExecutors;
 import java.io.IOException;
-import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executor;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
@@ -72,7 +73,8 @@ public class DebugAppCheckProviderTest {
 
   private StorageHelper storageHelper;
   private SharedPreferences sharedPreferences;
-  private ExecutorService backgroundExecutor = MoreExecutors.newDirectExecutorService();
+  // TODO(b/258273630): Use TestOnlyExecutors instead of MoreExecutors.directExecutor().
+  private Executor executor = MoreExecutors.directExecutor();
 
   @Before
   public void setup() {
@@ -100,7 +102,8 @@ public void testPublicConstructor_nullFirebaseApp_expectThrows() {
     assertThrows(
         NullPointerException.class,
         () -> {
-          new DebugAppCheckProvider(null, null);
+          new DebugAppCheckProvider(
+              null, null, TestOnlyExecutors.background(), TestOnlyExecutors.blocking());
         });
   }
 
@@ -110,7 +113,7 @@ public void testDetermineDebugSecret_noStoredSecret_createsNewSecret() {
     assertThat(storageHelper.retrieveDebugSecret()).isNull();
 
     Task<String> debugSecretTask =
-        DebugAppCheckProvider.determineDebugSecret(mockFirebaseApp, backgroundExecutor);
+        DebugAppCheckProvider.determineDebugSecret(mockFirebaseApp, executor);
     assertThat(storageHelper.retrieveDebugSecret()).isNotNull();
     assertThat(storageHelper.retrieveDebugSecret()).isEqualTo(debugSecretTask.getResult());
   }
@@ -120,7 +123,7 @@ public void testDetermineDebugSecret_storedSecret_usesExistingSecret() {
     storageHelper.saveDebugSecret(DEBUG_SECRET);
 
     Task<String> debugSecretTask =
-        DebugAppCheckProvider.determineDebugSecret(mockFirebaseApp, backgroundExecutor);
+        DebugAppCheckProvider.determineDebugSecret(mockFirebaseApp, executor);
     assertThat(debugSecretTask.getResult()).isEqualTo(DEBUG_SECRET);
     assertThat(storageHelper.retrieveDebugSecret()).isEqualTo(DEBUG_SECRET);
   }
@@ -134,8 +137,7 @@ public void exchangeDebugToken_onSuccess_setsTaskResult() throws Exception {
     when(mockAppCheckTokenResponse.getTimeToLive()).thenReturn(TIME_TO_LIVE);
 
     DebugAppCheckProvider provider =
-        new DebugAppCheckProvider(
-            DEBUG_SECRET, mockNetworkClient, backgroundExecutor, mockRetryManager);
+        new DebugAppCheckProvider(DEBUG_SECRET, mockNetworkClient, executor, mockRetryManager);
     Task<AppCheckToken> task = provider.getToken();
 
     verify(mockNetworkClient)
@@ -153,8 +155,7 @@ public void exchangeDebugToken_onFailure_setsTaskException() throws Exception {
         .thenThrow(new IOException());
 
     DebugAppCheckProvider provider =
-        new DebugAppCheckProvider(
-            DEBUG_SECRET, mockNetworkClient, backgroundExecutor, mockRetryManager);
+        new DebugAppCheckProvider(DEBUG_SECRET, mockNetworkClient, executor, mockRetryManager);
     Task<AppCheckToken> task = provider.getToken();
 
     verify(mockNetworkClient)