Bug 1566367 - [2.0] Add streaming telemetry Gecko-GV bridge. r=snorp,chutten

Differential Revision: https://phabricator.services.mozilla.com/D38899

--HG--
extra : moz-landing-system : lando

widget/android/GeckoTelemetryDelegate.h

@@ -0,0 +1,62 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef GeckoTelemetryDelegate_h__
+#define GeckoTelemetryDelegate_h__
+
+#include "geckoview/streaming/GeckoViewStreamingTelemetry.h"
+
+#include <jni.h>
+
+#include "mozilla/jni/Natives.h"
+#include "GeneratedJNIWrappers.h"
+
+namespace mozilla {
+namespace widget {
+
+class GeckoTelemetryDelegate final
+    : public GeckoViewStreamingTelemetry::StreamingTelemetryDelegate,
+      public mozilla::java::RuntimeTelemetry::Proxy::Natives<
+          GeckoTelemetryDelegate> {
+ public:
+  // Implement Proxy native.
+  static void RegisterDelegateProxy(
+      mozilla::java::RuntimeTelemetry::Proxy::Param aProxy) {
+    MOZ_ASSERT(aProxy);
+
+    GeckoViewStreamingTelemetry::RegisterDelegate(
+        new GeckoTelemetryDelegate(aProxy));
+  }
+
+  explicit GeckoTelemetryDelegate(
+      mozilla::java::RuntimeTelemetry::Proxy::Param aProxy)
+      : mProxy(aProxy) {}
+
+ private:
+  // Implement StreamingTelemetryDelegate.
+  void ReceiveHistogramSamples(const nsCString& aName,
+                               const nsTArray<uint32_t>& aSamples) override {
+    if (!mozilla::jni::IsAvailable() || !mProxy || aSamples.Length() < 1) {
+      return;
+    }
+
+    nsTArray<int64_t>* samples = new nsTArray<int64_t>();
+    for (size_t i = 0; i < aSamples.Length(); i++) {
+      samples->AppendElement(static_cast<int64_t>(aSamples[i]));
+    }
+
+    mProxy->DispatchTelemetry(
+        aName,
+        mozilla::jni::LongArray::New(samples->Elements(), samples->Length()));
+  }
+
+  mozilla::java::RuntimeTelemetry::Proxy::GlobalRef mProxy;
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif  // GeckoTelemetryDelegate_h__

widget/android/moz.build

@@ -98,6 +98,7 @@ LOCAL_INCLUDES += [
     '/layout/painting',
     '/netwerk/base',
     '/netwerk/cache',
+    '/toolkit/components/telemetry',
     '/widget',
     '/xpcom/threads',
 ]

widget/android/nsAppShell.cpp

@@ -64,6 +64,7 @@
 #include "GeckoProcessManager.h"
 #include "GeckoScreenOrientation.h"
 #include "GeckoSystemStateListener.h"
+#include "GeckoTelemetryDelegate.h"
 #include "GeckoVRManager.h"
 #include "PrefsHelper.h"
 #include "ScreenHelperAndroid.h"
@@ -387,6 +388,7 @@ nsAppShell::nsAppShell()
       GeckoAppShellSupport::Init();
       mozilla::GeckoSystemStateListener::Init();
       mozilla::widget::Telemetry::Init();
+      mozilla::widget::GeckoTelemetryDelegate::Init();
 
       // Set the corresponding state in GeckoThread.
       java::GeckoThread::SetState(java::GeckoThread::State::RUNNING());
@@ -413,6 +415,7 @@ nsAppShell::nsAppShell()
     nsWindow::InitNatives();
     mozilla::gl::AndroidSurfaceTexture::Init();
     mozilla::WebAuthnTokenManager::Init();
+    mozilla::widget::GeckoTelemetryDelegate::Init();
 
     if (jni::IsFennec()) {
       BrowserLocaleManagerSupport::Init();