1 files changed, 100 insertions, 0 deletions
diff --git a/widget/android/GeckoTelemetryDelegate.h b/widget/android/GeckoTelemetryDelegate.h
new file mode 100644
index 0000000000..43b20d4ad6
--- /dev/null
+++ b/widget/android/GeckoTelemetryDelegate.h
@@ -0,0 +1,100 @@
+/* -*- 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/java/RuntimeTelemetryNatives.h"
+#include "mozilla/jni/Natives.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:
+  void DispatchHistogram(bool aIsCategorical, const nsCString& aName,
+                         const nsTArray<uint32_t>& aSamples) {
+    if (!mozilla::jni::IsAvailable() || !mProxy || aSamples.Length() < 1) {
+      return;
+    }
+
+    // Convert aSamples to an array of int64_t. We know |samples| required
+    // capacity needs to match |aSamples.Length()|.
+    nsTArray<int64_t> samples(aSamples.Length());
+    for (size_t i = 0, l = aSamples.Length(); i < l; ++i) {
+      samples.AppendElement(static_cast<int64_t>(aSamples[i]));
+    }
+
+    // LongArray::From *copies* the elements
+    mProxy->DispatchHistogram(aIsCategorical, aName,
+                              mozilla::jni::LongArray::From(samples));
+  }
+
+  // Implement StreamingTelemetryDelegate.
+  void ReceiveHistogramSamples(const nsCString& aName,
+                               const nsTArray<uint32_t>& aSamples) override {
+    DispatchHistogram(/* isCategorical */ false, aName, aSamples);
+  }
+
+  void ReceiveCategoricalHistogramSamples(
+      const nsCString& aName, const nsTArray<uint32_t>& aSamples) override {
+    DispatchHistogram(/* isCategorical */ true, aName, aSamples);
+  }
+
+  void ReceiveBoolScalarValue(const nsCString& aName, bool aValue) override {
+    if (!mozilla::jni::IsAvailable() || !mProxy) {
+      return;
+    }
+
+    mProxy->DispatchBooleanScalar(aName, aValue);
+  }
+
+  void ReceiveStringScalarValue(const nsCString& aName,
+                                const nsCString& aValue) override {
+    if (!mozilla::jni::IsAvailable() || !mProxy) {
+      return;
+    }
+
+    mProxy->DispatchStringScalar(aName, aValue);
+  }
+
+  void ReceiveUintScalarValue(const nsCString& aName,
+                              uint32_t aValue) override {
+    if (!mozilla::jni::IsAvailable() || !mProxy) {
+      return;
+    }
+
+    mProxy->DispatchLongScalar(aName, static_cast<int64_t>(aValue));
+  }
+
+  mozilla::java::RuntimeTelemetry::Proxy::GlobalRef mProxy;
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif  // GeckoTelemetryDelegate_h__