[CONFIGURATION] File configuration - metric model

sdk/include/opentelemetry/sdk/configuration/console_push_metric_exporter_configuration.h

@@ -0,0 +1,30 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#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/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+// YAML-SCHEMA: schema/common.json
+// YAML-NODE: Console
+class ConsolePushMetricExporterConfiguration : public PushMetricExporterConfiguration
+{
+public:
+  void Accept(PushMetricExporterConfigurationVisitor *visitor) const override
+  {
+    visitor->VisitConsole(this);
+  }
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/metric_producer_configuration.h

@@ -0,0 +1,32 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+class MetricProducerConfigurationVisitor;
+
+// YAML-SCHEMA: schema/meter_provider.json
+// YAML-NODE: MetricProducer
+class MetricProducerConfiguration
+{
+public:
+  MetricProducerConfiguration()                                                    = default;
+  MetricProducerConfiguration(MetricProducerConfiguration &&)                      = default;
+  MetricProducerConfiguration(const MetricProducerConfiguration &)                 = default;
+  MetricProducerConfiguration &operator=(MetricProducerConfiguration &&)           = default;
+  MetricProducerConfiguration &operator=(const MetricProducerConfiguration &other) = default;
+  virtual ~MetricProducerConfiguration()                                           = default;
+
+  virtual void Accept(MetricProducerConfigurationVisitor *visitor) const = 0;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/metric_reader_configuration.h

@@ -0,0 +1,32 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+class MetricReaderConfigurationVisitor;
+
+// YAML-SCHEMA: schema/meter_provider.json
+// YAML-NODE: MetricReader
+class MetricReaderConfiguration
+{
+public:
+  MetricReaderConfiguration()                                                  = default;
+  MetricReaderConfiguration(MetricReaderConfiguration &&)                      = default;
+  MetricReaderConfiguration(const MetricReaderConfiguration &)                 = default;
+  MetricReaderConfiguration &operator=(MetricReaderConfiguration &&)           = default;
+  MetricReaderConfiguration &operator=(const MetricReaderConfiguration &other) = default;
+  virtual ~MetricReaderConfiguration()                                         = default;
+
+  virtual void Accept(MetricReaderConfigurationVisitor *visitor) const = 0;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/metric_reader_configuration_visitor.h

@@ -0,0 +1,34 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+class PeriodicMetricReaderConfiguration;
+class PullMetricReaderConfiguration;
+
+class MetricReaderConfigurationVisitor
+{
+public:
+  MetricReaderConfigurationVisitor()                                               = default;
+  MetricReaderConfigurationVisitor(MetricReaderConfigurationVisitor &&)            = default;
+  MetricReaderConfigurationVisitor(const MetricReaderConfigurationVisitor &)       = default;
+  MetricReaderConfigurationVisitor &operator=(MetricReaderConfigurationVisitor &&) = default;
+  MetricReaderConfigurationVisitor &operator=(const MetricReaderConfigurationVisitor &other) =
+      default;
+  virtual ~MetricReaderConfigurationVisitor() = default;
+
+  virtual void VisitPeriodic(const PeriodicMetricReaderConfiguration *model) = 0;
+  virtual void VisitPull(const PullMetricReaderConfiguration *model)         = 0;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

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

@@ -0,0 +1,37 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <string>
+
+#include "opentelemetry/sdk/configuration/default_histogram_aggregation.h"
+#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/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+// YAML-SCHEMA: schema/meter_provider.json
+// YAML-NODE: ExperimentalOtlpFileMetricExporter
+class OtlpFilePushMetricExporterConfiguration : public PushMetricExporterConfiguration
+{
+public:
+  void Accept(PushMetricExporterConfigurationVisitor *visitor) const override
+  {
+    visitor->VisitOtlpFile(this);
+  }
+
+  std::string output_stream;
+  std::string temporality_preference;  // FIXME: enum
+  enum_default_histogram_aggregation default_histogram_aggregation{explicit_bucket_histogram};
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

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

@@ -0,0 +1,46 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "opentelemetry/sdk/configuration/default_histogram_aggregation.h"
+#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/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+// YAML-SCHEMA: schema/meter_provider.json
+// YAML-NODE: OtlpGrpcMetricExporter
+class OtlpGrpcPushMetricExporterConfiguration : public PushMetricExporterConfiguration
+{
+public:
+  void Accept(PushMetricExporterConfigurationVisitor *visitor) const override
+  {
+    visitor->VisitOtlpGrpc(this);
+  }
+
+  std::string endpoint;
+  std::string certificate_file;
+  std::string client_key_file;
+  std::string client_certificate_file;
+  std::unique_ptr<HeadersConfiguration> headers;
+  std::string headers_list;
+  std::string compression;
+  std::size_t timeout{0};
+  bool insecure{false};
+  std::string temporality_preference;  // FIXME: enum
+  enum_default_histogram_aggregation default_histogram_aggregation{explicit_bucket_histogram};
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

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

@@ -0,0 +1,47 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "opentelemetry/sdk/configuration/default_histogram_aggregation.h"
+#include "opentelemetry/sdk/configuration/headers_configuration.h"
+#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/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+// YAML-SCHEMA: schema/meter_provider.json
+// YAML-NODE: OtlpHttpMetricExporter
+class OtlpHttpPushMetricExporterConfiguration : public PushMetricExporterConfiguration
+{
+public:
+  void Accept(PushMetricExporterConfigurationVisitor *visitor) const override
+  {
+    visitor->VisitOtlpHttp(this);
+  }
+
+  std::string endpoint;
+  std::string certificate_file;
+  std::string client_key_file;
+  std::string client_certificate_file;
+  std::unique_ptr<HeadersConfiguration> headers;
+  std::string headers_list;
+  std::string compression;
+  std::size_t timeout{0};
+  enum_otlp_http_encoding encoding{protobuf};
+  std::string temporality_preference;  // FIXME: enum
+  enum_default_histogram_aggregation default_histogram_aggregation{explicit_bucket_histogram};
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/periodic_metric_reader_configuration.h

@@ -0,0 +1,39 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include "opentelemetry/sdk/configuration/metric_producer_configuration.h"
+#include "opentelemetry/sdk/configuration/metric_reader_configuration.h"
+#include "opentelemetry/sdk/configuration/metric_reader_configuration_visitor.h"
+#include "opentelemetry/sdk/configuration/push_metric_exporter_configuration.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+// YAML-SCHEMA: schema/meter_provider.json
+// YAML-NODE: PeriodicMetricReader
+class PeriodicMetricReaderConfiguration : public MetricReaderConfiguration
+{
+public:
+  void Accept(MetricReaderConfigurationVisitor *visitor) const override
+  {
+    visitor->VisitPeriodic(this);
+  }
+
+  std::size_t interval{0};
+  std::size_t timeout{0};
+  std::unique_ptr<PushMetricExporterConfiguration> exporter;
+  std::vector<std::unique_ptr<MetricProducerConfiguration>> producers;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/prometheus_pull_metric_exporter_configuration.h

@@ -0,0 +1,39 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <string>
+
+#include "opentelemetry/sdk/configuration/headers_configuration.h"
+#include "opentelemetry/sdk/configuration/pull_metric_exporter_configuration.h"
+#include "opentelemetry/sdk/configuration/pull_metric_exporter_configuration_visitor.h"
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+
+// YAML-SCHEMA: schema/meter_provider.json
+// YAML-NODE: Prometheus
+class PrometheusPullMetricExporterConfiguration : public PullMetricExporterConfiguration
+{
+public:
+  void Accept(PullMetricExporterConfigurationVisitor *visitor) const override
+  {
+    visitor->VisitPrometheus(this);
+  }
+
+  std::string host;
+  std::size_t port{0};
+  bool without_units{false};
+  bool without_type_suffix{false};
+  bool without_scope_info{false};
+  // FIXME: with_resource_constant_labels;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE

sdk/include/opentelemetry/sdk/configuration/pull_metric_exporter_configuration.h

@@ -0,0 +1,31 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace configuration
+{
+class PullMetricExporterConfigurationVisitor;
+
+class PullMetricExporterConfiguration
+{
+public:
+  PullMetricExporterConfiguration()                                              = default;
+  PullMetricExporterConfiguration(PullMetricExporterConfiguration &&)            = default;
+  PullMetricExporterConfiguration(const PullMetricExporterConfiguration &)       = default;
+  PullMetricExporterConfiguration &operator=(PullMetricExporterConfiguration &&) = default;
+  PullMetricExporterConfiguration &operator=(const PullMetricExporterConfiguration &other) =
+      default;
+  virtual ~PullMetricExporterConfiguration() = default;
+
+  virtual void Accept(PullMetricExporterConfigurationVisitor *visitor) const = 0;
+};
+
+}  // namespace configuration
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE