New 'isConnected' API

Summary: Expose the newly created `isConnected` API to Android FlipperClient API.

Reviewed By: LukeDefeo

Differential Revision: D46841260

fbshipit-source-id: 1512e54d28779ef62423aa52727fed3a34d00333

android/src/main/cpp/sonar.cpp

@@ -768,6 +768,7 @@ class JFlipperClient : public jni::HybridClass<JFlipperClient> {
         makeNativeMethod("getInstance", JFlipperClient::getInstance),
         makeNativeMethod("start", JFlipperClient::start),
         makeNativeMethod("stop", JFlipperClient::stop),
+        makeNativeMethod("isConnected", JFlipperClient::isConnected),
         makeNativeMethod("addPluginNative", JFlipperClient::addPlugin),
         makeNativeMethod("removePluginNative", JFlipperClient::removePlugin),
         makeNativeMethod(
@@ -813,6 +814,19 @@ class JFlipperClient : public jni::HybridClass<JFlipperClient> {
     }
   }
 
+  bool isConnected() {
+    try {
+      return FlipperClient::instance()->isConnected();
+    } catch (const std::exception& e) {
+      handleException(e);
+    } catch (const std::exception* e) {
+      if (e) {
+        handleException(*e);
+      }
+    }
+    return false;
+  }
+
   void addPlugin(jni::alias_ref<JFlipperPlugin> plugin) {
     try {
       auto wrapper =

android/src/main/java/com/facebook/flipper/android/FlipperClientImpl.java

@@ -89,6 +89,9 @@ class FlipperClientImpl implements FlipperClient {
   @Override
   public native void stop();
 
+  @Override
+  public native boolean isConnected();
+
   @Override
   public native void subscribeForUpdates(FlipperStateUpdateListener stateListener);
 

android/src/main/java/com/facebook/flipper/core/FlipperClient.java

@@ -24,6 +24,8 @@ public interface FlipperClient {
 
   void stop();
 
+  boolean isConnected();
+
   void subscribeForUpdates(FlipperStateUpdateListener stateListener);
 
   void unsubscribe();