1 files changed, 99 insertions, 0 deletions
diff --git a/toolkit/components/glean/bindings/private/Labeled.cpp b/toolkit/components/glean/bindings/private/Labeled.cpp
new file mode 100644
index 0000000000..b01867d729
--- /dev/null
+++ b/toolkit/components/glean/bindings/private/Labeled.cpp
@@ -0,0 +1,99 @@
+/* -*- 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/. */
+
+#include "mozilla/glean/bindings/Labeled.h"
+
+#include "mozilla/dom/GleanBinding.h"
+#include "mozilla/glean/fog_ffi_generated.h"
+#include "mozilla/glean/bindings/GleanJSMetricsLookup.h"
+#include "mozilla/glean/bindings/MetricTypes.h"
+#include "mozilla/UniquePtr.h"
+#include "nsString.h"
+
+namespace mozilla::glean {
+
+namespace impl {
+template <>
+BooleanMetric Labeled<BooleanMetric>::Get(const nsACString& aLabel) const {
+  auto submetricId = fog_labeled_boolean_get(mId, &aLabel);
+  // If this labeled metric is mirrored, we need to map the submetric id back
+  // to the label string and mirrored scalar so we can mirror its operations.
+  auto mirrorId = ScalarIdForMetric(mId);
+  if (mirrorId) {
+    GetLabeledMirrorLock().apply([&](auto& lock) {
+      auto tuple = MakeTuple<Telemetry::ScalarID, nsString>(
+          mirrorId.extract(), NS_ConvertUTF8toUTF16(aLabel));
+      lock.ref()->InsertOrUpdate(submetricId, std::move(tuple));
+    });
+  }
+  return BooleanMetric(submetricId);
+}
+
+template <>
+CounterMetric Labeled<CounterMetric>::Get(const nsACString& aLabel) const {
+  auto submetricId = fog_labeled_counter_get(mId, &aLabel);
+  // If this labeled metric is mirrored, we need to map the submetric id back
+  // to the label string and mirrored scalar so we can mirror its operations.
+  auto mirrorId = ScalarIdForMetric(mId);
+  if (mirrorId) {
+    GetLabeledMirrorLock().apply([&](auto& lock) {
+      auto tuple = MakeTuple<Telemetry::ScalarID, nsString>(
+          mirrorId.extract(), NS_ConvertUTF8toUTF16(aLabel));
+      lock.ref()->InsertOrUpdate(submetricId, std::move(tuple));
+    });
+  }
+  return CounterMetric(submetricId);
+}
+
+template <>
+StringMetric Labeled<StringMetric>::Get(const nsACString& aLabel) const {
+  auto submetricId = fog_labeled_string_get(mId, &aLabel);
+  // Why no GIFFT map here?
+  // Labeled Strings can't be mirrored. Telemetry has no compatible probe.
+  return StringMetric(submetricId);
+}
+}  // namespace impl
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(GleanLabeled)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(GleanLabeled)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(GleanLabeled)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GleanLabeled)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+JSObject* GleanLabeled::WrapObject(JSContext* aCx,
+                                   JS::Handle<JSObject*> aGivenProto) {
+  return dom::GleanLabeled_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+already_AddRefed<nsISupports> GleanLabeled::NamedGetter(const nsAString& aName,
+                                                        bool& aFound) {
+  auto label = NS_ConvertUTF16toUTF8(aName);
+  aFound = true;
+  uint32_t submetricId = 0;
+  already_AddRefed<nsISupports> submetric =
+      NewSubMetricFromIds(mTypeId, mId, label, &submetricId);
+
+  auto mirrorId = ScalarIdForMetric(mId);
+  if (mirrorId) {
+    GetLabeledMirrorLock().apply([&](auto& lock) {
+      auto tuple = MakeTuple<Telemetry::ScalarID, nsString>(mirrorId.extract(),
+                                                            nsString(aName));
+      lock.ref()->InsertOrUpdate(submetricId, std::move(tuple));
+    });
+  }
+  return submetric;
+}
+
+bool GleanLabeled::NameIsEnumerable(const nsAString& aName) { return false; }
+
+void GleanLabeled::GetSupportedNames(nsTArray<nsString>& aNames) {
+  // We really don't know, so don't do anything.
+}
+
+}  // namespace mozilla::glean