Support custom DevSupportManager (#31841)

Summary:
to open possibilities for some DX enhancement, the pr introduces `DevSupportManagerFactory` customization. applications could implement a different DevSupportManager in ReactNativeHost.

## Changelog

[Internal] [Added] - Support custom DevSupportManager

Pull Request resolved: https://github.com/facebook/react-native/pull/31841

Test Plan: this pr just introduces some new interfaces and should not break existing functionalities.

Reviewed By: RSNara

Differential Revision: D30878134

Pulled By: yungsters

fbshipit-source-id: ccdf798caa322b07a876da8312b97002da057388

ReactAndroid/src/main/java/com/facebook/react/devsupport/DefaultDevSupportManagerFactory.java

@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) Facebook, Inc. and its 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.devsupport;
+
+import android.content.Context;
+import androidx.annotation.Nullable;
+import com.facebook.react.devsupport.interfaces.DevBundleDownloadListener;
+import com.facebook.react.devsupport.interfaces.DevSupportManager;
+import com.facebook.react.packagerconnection.RequestHandler;
+import java.lang.reflect.Constructor;
+import java.util.Map;
+
+/**
+ * A simple factory that creates instances of {@link DevSupportManager} implementations. Uses
+ * reflection to create BridgeDevSupportManager if it exists. This allows ProGuard to strip that
+ * class and its dependencies in release builds. If the class isn't found, {@link
+ * DisabledDevSupportManager} is returned instead.
+ */
+public class DefaultDevSupportManagerFactory implements DevSupportManagerFactory {
+
+  private static final String DEVSUPPORT_IMPL_PACKAGE = "com.facebook.react.devsupport";
+  private static final String DEVSUPPORT_IMPL_CLASS = "BridgeDevSupportManager";
+
+  public DevSupportManager create(
+      Context applicationContext,
+      ReactInstanceDevHelper reactInstanceDevHelper,
+      @Nullable String packagerPathForJSBundleName,
+      boolean enableOnCreate,
+      int minNumShakes) {
+
+    return create(
+        applicationContext,
+        reactInstanceDevHelper,
+        packagerPathForJSBundleName,
+        enableOnCreate,
+        null,
+        null,
+        minNumShakes,
+        null);
+  }
+
+  @Override
+  public DevSupportManager create(
+      Context applicationContext,
+      ReactInstanceDevHelper reactInstanceManagerHelper,
+      @Nullable String packagerPathForJSBundleName,
+      boolean enableOnCreate,
+      @Nullable RedBoxHandler redBoxHandler,
+      @Nullable DevBundleDownloadListener devBundleDownloadListener,
+      int minNumShakes,
+      @Nullable Map<String, RequestHandler> customPackagerCommandHandlers) {
+    if (!enableOnCreate) {
+      return new DisabledDevSupportManager();
+    }
+    try {
+      // ProGuard is surprisingly smart in this case and will keep a class if it detects a call to
+      // Class.forName() with a static string. So instead we generate a quasi-dynamic string to
+      // confuse it.
+      String className =
+          new StringBuilder(DEVSUPPORT_IMPL_PACKAGE)
+              .append(".")
+              .append(DEVSUPPORT_IMPL_CLASS)
+              .toString();
+      Class<?> devSupportManagerClass = Class.forName(className);
+      Constructor constructor =
+          devSupportManagerClass.getConstructor(
+              Context.class,
+              ReactInstanceDevHelper.class,
+              String.class,
+              boolean.class,
+              RedBoxHandler.class,
+              DevBundleDownloadListener.class,
+              int.class,
+              Map.class);
+      return (DevSupportManager)
+          constructor.newInstance(
+              applicationContext,
+              reactInstanceManagerHelper,
+              packagerPathForJSBundleName,
+              true,
+              redBoxHandler,
+              devBundleDownloadListener,
+              minNumShakes,
+              customPackagerCommandHandlers);
+    } catch (Exception e) {
+      throw new RuntimeException(
+          "Requested enabled DevSupportManager, but BridgeDevSupportManager class was not found"
+              + " or could not be created",
+          e);
+    }
+  }
+}

ReactAndroid/src/main/java/com/facebook/react/devsupport/DevSupportManagerFactory.java

@@ -12,39 +12,10 @@ import androidx.annotation.Nullable;
 import com.facebook.react.devsupport.interfaces.DevBundleDownloadListener;
 import com.facebook.react.devsupport.interfaces.DevSupportManager;
 import com.facebook.react.packagerconnection.RequestHandler;
-import java.lang.reflect.Constructor;
 import java.util.Map;
 
-/**
- * A simple factory that creates instances of {@link DevSupportManager} implementations. Uses
- * reflection to create BridgeDevSupportManager if it exists. This allows ProGuard to strip that
- * class and its dependencies in release builds. If the class isn't found, {@link
- * DisabledDevSupportManager} is returned instead.
- */
-public class DevSupportManagerFactory {
-
-  private static final String DEVSUPPORT_IMPL_PACKAGE = "com.facebook.react.devsupport";
-  private static final String DEVSUPPORT_IMPL_CLASS = "BridgeDevSupportManager";
-
-  public static DevSupportManager create(
-      Context applicationContext,
-      ReactInstanceDevHelper reactInstanceDevHelper,
-      @Nullable String packagerPathForJSBundleName,
-      boolean enableOnCreate,
-      int minNumShakes) {
-
-    return create(
-        applicationContext,
-        reactInstanceDevHelper,
-        packagerPathForJSBundleName,
-        enableOnCreate,
-        null,
-        null,
-        minNumShakes,
-        null);
-  }
-
-  public static DevSupportManager create(
+public interface DevSupportManagerFactory {
+  DevSupportManager create(
       Context applicationContext,
       ReactInstanceDevHelper reactInstanceManagerHelper,
       @Nullable String packagerPathForJSBundleName,
@@ -52,45 +23,5 @@ public class DevSupportManagerFactory {
       @Nullable RedBoxHandler redBoxHandler,
       @Nullable DevBundleDownloadListener devBundleDownloadListener,
       int minNumShakes,
-      @Nullable Map<String, RequestHandler> customPackagerCommandHandlers) {
-    if (!enableOnCreate) {
-      return new DisabledDevSupportManager();
-    }
-    try {
-      // ProGuard is surprisingly smart in this case and will keep a class if it detects a call to
-      // Class.forName() with a static string. So instead we generate a quasi-dynamic string to
-      // confuse it.
-      String className =
-          new StringBuilder(DEVSUPPORT_IMPL_PACKAGE)
-              .append(".")
-              .append(DEVSUPPORT_IMPL_CLASS)
-              .toString();
-      Class<?> devSupportManagerClass = Class.forName(className);
-      Constructor constructor =
-          devSupportManagerClass.getConstructor(
-              Context.class,
-              ReactInstanceDevHelper.class,
-              String.class,
-              boolean.class,
-              RedBoxHandler.class,
-              DevBundleDownloadListener.class,
-              int.class,
-              Map.class);
-      return (DevSupportManager)
-          constructor.newInstance(
-              applicationContext,
-              reactInstanceManagerHelper,
-              packagerPathForJSBundleName,
-              true,
-              redBoxHandler,
-              devBundleDownloadListener,
-              minNumShakes,
-              customPackagerCommandHandlers);
-    } catch (Exception e) {
-      throw new RuntimeException(
-          "Requested enabled DevSupportManager, but BridgeDevSupportManager class was not found"
-              + " or could not be created",
-          e);
-    }
-  }
+      @Nullable Map<String, RequestHandler> customPackagerCommandHandlers);
 }