Add CompositeReactPackageTurboModuleManagerDelegate [RFC]

Summary:
This diff adds a CompositeReactPackageTurboModuleManagerDelegate which can be used to combine 1 or more TurboModuleManagerDelegates into a single one.

This is useful when both the app and one or multiple of its libraries provides a TurboModuleManagerDelegate

Changelog:
[Internal] [Changed] - Add CompositeReactPackageTurboModuleManagerDelegate

Reviewed By: mdvacca

Differential Revision: D36187694

fbshipit-source-id: 88f1d689342345b4cb7e67186791ad5bd1a6f21b

ReactAndroid/src/main/java/com/facebook/react/CompositeReactPackageTurboModuleManagerDelegate.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+package com.facebook.react;
+
+import androidx.annotation.NonNull;
+import com.facebook.jni.HybridData;
+import com.facebook.proguard.annotations.DoNotStrip;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.turbomodule.core.TurboModuleManagerDelegate;
+import com.facebook.soloader.SoLoader;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+@DoNotStrip
+public class CompositeReactPackageTurboModuleManagerDelegate
+    extends ReactPackageTurboModuleManagerDelegate {
+
+  private static volatile boolean sIsSoLibraryLoaded;
+
+  protected native HybridData initHybrid();
+
+  private final List<TurboModuleManagerDelegate> mDelegates;
+
+  private CompositeReactPackageTurboModuleManagerDelegate(
+      ReactApplicationContext context,
+      List<ReactPackage> packages,
+      List<TurboModuleManagerDelegate> delegates) {
+    super(context, packages);
+    mDelegates = delegates;
+    for (TurboModuleManagerDelegate delegate : delegates) {
+      addTurboModuleManagerDelegate(delegate);
+    }
+  }
+
+  private native void addTurboModuleManagerDelegate(TurboModuleManagerDelegate delegates);
+
+  public static class Builder extends ReactPackageTurboModuleManagerDelegate.Builder {
+    private final List<ReactPackageTurboModuleManagerDelegate.Builder> mDelegatesBuilder;
+
+    public Builder(@NonNull List<ReactPackageTurboModuleManagerDelegate.Builder> delegatesBuilder) {
+      mDelegatesBuilder = delegatesBuilder;
+    }
+
+    protected ReactPackageTurboModuleManagerDelegate build(
+        ReactApplicationContext context, List<ReactPackage> packages) {
+      List<TurboModuleManagerDelegate> delegates = new ArrayList<>();
+      for (ReactPackageTurboModuleManagerDelegate.Builder delegatesBuilder : mDelegatesBuilder) {
+        delegates.add(delegatesBuilder.build(context, Collections.<ReactPackage>emptyList()));
+      }
+      return new CompositeReactPackageTurboModuleManagerDelegate(context, packages, delegates);
+    }
+  }
+
+  protected synchronized void maybeLoadOtherSoLibraries() {
+    // Prevents issues with initializer interruptions. See T38996825 and D13793825 for more context.
+    if (!sIsSoLibraryLoaded) {
+      SoLoader.loadLibrary("turbomodulejsijni");
+      sIsSoLibraryLoaded = true;
+    }
+  }
+}