Fixed TODO for enum temporality_preference

Author: marcalff

sdk/include/opentelemetry/sdk/configuration/otlp_file_push_metric_exporter_configuration.h

@@ -9,6 +9,7 @@
 #include "opentelemetry/sdk/configuration/headers_configuration.h"
 #include "opentelemetry/sdk/configuration/push_metric_exporter_configuration.h"
 #include "opentelemetry/sdk/configuration/push_metric_exporter_configuration_visitor.h"
+#include "opentelemetry/sdk/configuration/temporality_preference.h"
 #include "opentelemetry/version.h"
 
 OPENTELEMETRY_BEGIN_NAMESPACE
@@ -28,7 +29,7 @@ class OtlpFilePushMetricExporterConfiguration : public PushMetricExporterConfigu
   }
 
   std::string output_stream;
-  std::string temporality_preference;  // FIXME: enum
+  enum_temporality_preference temporality_preference{cumulative};
   enum_default_histogram_aggregation default_histogram_aggregation{explicit_bucket_histogram};
 };
 

sdk/include/opentelemetry/sdk/configuration/otlp_grpc_push_metric_exporter_configuration.h

@@ -10,6 +10,7 @@
 #include "opentelemetry/sdk/configuration/headers_configuration.h"
 #include "opentelemetry/sdk/configuration/push_metric_exporter_configuration.h"
 #include "opentelemetry/sdk/configuration/push_metric_exporter_configuration_visitor.h"
+#include "opentelemetry/sdk/configuration/temporality_preference.h"
 #include "opentelemetry/version.h"
 
 OPENTELEMETRY_BEGIN_NAMESPACE
@@ -37,7 +38,7 @@ class OtlpGrpcPushMetricExporterConfiguration : public PushMetricExporterConfigu
   std::string compression;
   std::size_t timeout{0};
   bool insecure{false};
-  std::string temporality_preference;  // FIXME: enum
+  enum_temporality_preference temporality_preference{cumulative};
   enum_default_histogram_aggregation default_histogram_aggregation{explicit_bucket_histogram};
 };
 

sdk/include/opentelemetry/sdk/configuration/otlp_http_push_metric_exporter_configuration.h

@@ -11,6 +11,7 @@
 #include "opentelemetry/sdk/configuration/otlp_http_encoding.h"
 #include "opentelemetry/sdk/configuration/push_metric_exporter_configuration.h"
 #include "opentelemetry/sdk/configuration/push_metric_exporter_configuration_visitor.h"
+#include "opentelemetry/sdk/configuration/temporality_preference.h"
 #include "opentelemetry/version.h"
 
 OPENTELEMETRY_BEGIN_NAMESPACE
@@ -38,7 +39,7 @@ class OtlpHttpPushMetricExporterConfiguration : public PushMetricExporterConfigu
   std::string compression;
   std::size_t timeout{0};
   enum_otlp_http_encoding encoding{protobuf};
-  std::string temporality_preference;  // FIXME: enum
+  enum_temporality_preference temporality_preference{cumulative};
   enum_default_histogram_aggregation default_histogram_aggregation{explicit_bucket_histogram};
 };
 

sdk/include/opentelemetry/sdk/configuration/temporality_preference.h

@@ -0,0 +1,25 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <cstdint>
+
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+enum enum_temporality_preference : std::uint8_t
+{
+  cumulative,
+  delta,
+  low_memory
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE