YAML parser for metrics

sdk/include/opentelemetry/sdk/configuration/aggregation_configuration.h

@@ -0,0 +1,25 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class AggregationConfiguration
+{
+public:
+  AggregationConfiguration()          = default;
+  virtual ~AggregationConfiguration() = default;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/base2_exponential_bucket_histogram_aggregation_configuration.h

@@ -0,0 +1,30 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/sdk/configuration/aggregation_configuration.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class Base2ExponentialBucketHistogramAggregationConfiguration : public AggregationConfiguration
+{
+public:
+  Base2ExponentialBucketHistogramAggregationConfiguration()           = default;
+  ~Base2ExponentialBucketHistogramAggregationConfiguration() override = default;
+
+  size_t max_scale;
+  size_t max_size;
+  bool record_min_max;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/default_aggregation_configuration.h

@@ -0,0 +1,26 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/sdk/configuration/aggregation_configuration.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class DefaultAggregationConfiguration : public AggregationConfiguration
+{
+public:
+  DefaultAggregationConfiguration()           = default;
+  ~DefaultAggregationConfiguration() override = default;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/document_node.h

@@ -28,6 +28,8 @@ class DocumentNode
   DocumentNode()          = default;
   virtual ~DocumentNode() = default;
 
+  virtual std::string Key() const = 0;
+
   virtual bool AsBoolean()       = 0;
   virtual size_t AsInteger()     = 0;
   virtual double AsDouble()      = 0;

sdk/include/opentelemetry/sdk/configuration/drop_aggregation_configuration.h

@@ -0,0 +1,26 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/sdk/configuration/aggregation_configuration.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class DropAggregationConfiguration : public AggregationConfiguration
+{
+public:
+  DropAggregationConfiguration()           = default;
+  ~DropAggregationConfiguration() override = default;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/explicit_bucket_histogram_aggregation_configuration.h

@@ -0,0 +1,29 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/sdk/configuration/aggregation_configuration.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class ExplicitBucketHistogramAggregationConfiguration : public AggregationConfiguration
+{
+public:
+  ExplicitBucketHistogramAggregationConfiguration()           = default;
+  ~ExplicitBucketHistogramAggregationConfiguration() override = default;
+
+  std::vector<double> boundaries;
+  bool record_min_max;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/last_value_aggregation_configuration.h

@@ -0,0 +1,26 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/sdk/configuration/aggregation_configuration.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class LastValueAggregationConfiguration : public AggregationConfiguration
+{
+public:
+  LastValueAggregationConfiguration()           = default;
+  ~LastValueAggregationConfiguration() override = default;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/otlp_metric_exporter_configuration.h

@@ -14,6 +14,12 @@ namespace sdk
 namespace configuration
 {
 
+enum enum_default_histogram_aggregation
+{
+  explicit_bucket_histogram,
+  base2_exponential_bucket_histogram
+};
+
 class OtlpMetricExporterConfiguration : public MetricExporterConfiguration
 {
 public:
@@ -34,7 +40,7 @@ class OtlpMetricExporterConfiguration : public MetricExporterConfiguration
   std::string compression;
   size_t timeout;
   std::string temporality_preference;
-  int default_histogram_aggregation;  // FIXME enum
+  enum_default_histogram_aggregation default_histogram_aggregation;
   bool insecure;
 };
 

sdk/include/opentelemetry/sdk/configuration/ryml_document_node.h

@@ -20,6 +20,8 @@ class RymlDocumentNode : public DocumentNode
   RymlDocumentNode(ryml::ConstNodeRef node) : m_node(node) {}
   ~RymlDocumentNode() override = default;
 
+  std::string Key() const override;
+
   bool AsBoolean() override;
   size_t AsInteger() override;
   double AsDouble() override;

sdk/include/opentelemetry/sdk/configuration/selector_configuration.h

@@ -0,0 +1,42 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+enum enum_instrument_type
+{
+  counter,
+  histogram,
+  observable_counter,
+  observable_gauge,
+  observable_up_down_counter,
+  up_down_counter
+};
+
+class SelectorConfiguration
+{
+public:
+  SelectorConfiguration()  = default;
+  ~SelectorConfiguration() = default;
+
+  std::string instrument_name;
+  enum_instrument_type instrument_type;
+  std::string unit;
+  std::string meter_name;
+  std::string meter_version;
+  std::string meter_schema_url;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/stream_configuration.h

@@ -0,0 +1,31 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/sdk/configuration/aggregation_configuration.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class StreamConfiguration
+{
+public:
+  StreamConfiguration()  = default;
+  ~StreamConfiguration() = default;
+
+  std::string name;
+  std::string description;
+  std::unique_ptr<AggregationConfiguration> aggregation;
+  std::vector<std::string> attribute_keys;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/sum_aggregation_configuration.h

@@ -0,0 +1,26 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+
+#include "opentelemetry/sdk/configuration/aggregation_configuration.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class SumAggregationConfiguration : public AggregationConfiguration
+{
+public:
+  SumAggregationConfiguration()           = default;
+  ~SumAggregationConfiguration() override = default;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/view_configuration.h

@@ -5,6 +5,8 @@
 
 #include <memory>
 
+#include "opentelemetry/sdk/configuration/selector_configuration.h"
+#include "opentelemetry/sdk/configuration/stream_configuration.h"
 #include "opentelemetry/version.h"
 
 OPENTELEMETRY_BEGIN_NAMESPACE
@@ -16,6 +18,11 @@ namespace configuration
 class ViewConfiguration
 {
 public:
+  ViewConfiguration()  = default;
+  ~ViewConfiguration() = default;
+
+  std::unique_ptr<SelectorConfiguration> selector;
+  std::unique_ptr<StreamConfiguration> stream;
 };
 
 }  // namespace configuration