update ceph source to reef 18.1.2

[ceph.git] / ceph / src / jaegertracing / opentelemetry-cpp / sdk / include / opentelemetry / sdk / metrics / state / metric_storage.h

diff --git a/ceph/src/jaegertracing/opentelemetry-cpp/sdk/include/opentelemetry/sdk/metrics/state/metric_storage.h b/ceph/src/jaegertracing/opentelemetry-cpp/sdk/include/opentelemetry/sdk/metrics/state/metric_storage.h
new file mode 100644 (file)
index 0000000..e0ba55c
--- /dev/null
+++ b/ceph/src/jaegertracing/opentelemetry-cpp/sdk/include/opentelemetry/sdk/metrics/state/metric_storage.h
@@ -0,0 +1,86 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+#ifndef ENABLE_METRICS_PREVIEW
+#  include "opentelemetry/common/key_value_iterable_view.h"
+#  include "opentelemetry/common/timestamp.h"
+#  include "opentelemetry/context/context.h"
+#  include "opentelemetry/sdk/metrics/data/metric_data.h"
+#  include "opentelemetry/sdk/metrics/instruments.h"
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace sdk
+{
+namespace metrics
+{
+
+/* Represent the storage from which to collect the metrics */
+class CollectorHandle;
+
+class MetricStorage
+{
+public:
+  /* collect the metrics from this storage */
+  virtual bool Collect(CollectorHandle *collector,
+                       nostd::span<std::shared_ptr<CollectorHandle>> collectors,
+                       opentelemetry::common::SystemTimestamp sdk_start_ts,
+                       opentelemetry::common::SystemTimestamp collection_ts,
+                       nostd::function_ref<bool(MetricData)> callback) noexcept = 0;
+};
+
+class WritableMetricStorage
+{
+public:
+  virtual void RecordLong(long value, const opentelemetry::context::Context &context) noexcept = 0;
+
+  virtual void RecordLong(long value,
+                          const opentelemetry::common::KeyValueIterable &attributes,
+                          const opentelemetry::context::Context &context) noexcept = 0;
+
+  virtual void RecordDouble(double value,
+                            const opentelemetry::context::Context &context) noexcept = 0;
+
+  virtual void RecordDouble(double value,
+                            const opentelemetry::common::KeyValueIterable &attributes,
+                            const opentelemetry::context::Context &context) noexcept = 0;
+
+  virtual ~WritableMetricStorage() = default;
+};
+
+class NoopMetricStorage : public MetricStorage
+{
+public:
+  bool Collect(CollectorHandle *collector,
+               nostd::span<std::shared_ptr<CollectorHandle>> collectors,
+               opentelemetry::common::SystemTimestamp sdk_start_ts,
+               opentelemetry::common::SystemTimestamp collection_ts,
+               nostd::function_ref<bool(MetricData)> callback) noexcept override
+  {
+    MetricData metric_data;
+    return callback(std::move(metric_data));
+  }
+};
+
+class NoopWritableMetricStorage : public WritableMetricStorage
+{
+public:
+  void RecordLong(long value, const opentelemetry::context::Context &context) noexcept = 0;
+
+  void RecordLong(long value,
+                  const opentelemetry::common::KeyValueIterable &attributes,
+                  const opentelemetry::context::Context &context) noexcept override
+  {}
+
+  void RecordDouble(double value, const opentelemetry::context::Context &context) noexcept override
+  {}
+
+  void RecordDouble(double value,
+                    const opentelemetry::common::KeyValueIterable &attributes,
+                    const opentelemetry::context::Context &context) noexcept override
+  {}
+};
+
+}  // namespace metrics
+}  // namespace sdk
+OPENTELEMETRY_END_NAMESPACE
+#endif