CreateInt64ObservableCounter

api/include/opentelemetry/metrics/meter.h

@@ -54,7 +54,7 @@ class Meter
    * @param description a brief description of what the Observable Counter is used for.
    * @param unit the unit of metric values following https://unitsofmeasure.org/ucum.html.
    */
-  virtual nostd::shared_ptr<ObservableInstrument> CreateUInt64ObservableCounter(
+  virtual nostd::shared_ptr<ObservableInstrument> CreateInt64ObservableCounter(
       nostd::string_view name,
       nostd::string_view description = "",
       nostd::string_view unit        = "") noexcept = 0;

api/include/opentelemetry/metrics/noop.h

@@ -103,7 +103,7 @@ class NoopMeter final : public Meter
     return nostd::shared_ptr<Counter<double>>{new NoopCounter<double>(name, description, unit)};
   }
 
-  nostd::shared_ptr<ObservableInstrument> CreateUInt64ObservableCounter(
+  nostd::shared_ptr<ObservableInstrument> CreateInt64ObservableCounter(
       nostd::string_view name,
       nostd::string_view description = "",
       nostd::string_view unit        = "") noexcept override

sdk/include/opentelemetry/sdk/metrics/meter.h

@@ -45,7 +45,7 @@ class Meter final : public opentelemetry::metrics::Meter
       nostd::string_view description = "",
       nostd::string_view unit        = "") noexcept override;
 
-  nostd::shared_ptr<opentelemetry::metrics::ObservableInstrument> CreateUInt64ObservableCounter(
+  nostd::shared_ptr<opentelemetry::metrics::ObservableInstrument> CreateInt64ObservableCounter(
       nostd::string_view name,
       nostd::string_view description = "",
       nostd::string_view unit        = "") noexcept override;

sdk/src/metrics/meter.cc

@@ -61,10 +61,10 @@ nostd::shared_ptr<metrics::Counter<double>> Meter::CreateDoubleCounter(
       new DoubleCounter(instrument_descriptor, std::move(storage))};
 }
 
-nostd::shared_ptr<opentelemetry::metrics::ObservableInstrument>
-Meter::CreateUInt64ObservableCounter(nostd::string_view name,
-                                     nostd::string_view description,
-                                     nostd::string_view unit) noexcept
+nostd::shared_ptr<opentelemetry::metrics::ObservableInstrument> Meter::CreateInt64ObservableCounter(
+    nostd::string_view name,
+    nostd::string_view description,
+    nostd::string_view unit) noexcept
 {
   InstrumentDescriptor instrument_descriptor = {
       std::string{name.data(), name.size()}, std::string{description.data(), description.size()},

sdk/test/metrics/meter_test.cc

@@ -54,7 +54,7 @@ TEST(MeterTest, BasicAsyncTests)
 {
   MetricReader *metric_reader_ptr = nullptr;
   auto meter                      = InitMeter(&metric_reader_ptr);
-  auto observable_counter         = meter->CreateUInt64ObservableCounter("observable_counter");
+  auto observable_counter         = meter->CreateInt64ObservableCounter("observable_counter");
   observable_counter->AddCallback(asyc_generate_measurements, nullptr);
 
   size_t count = 0;