First Commit

ext/prometheus-cpp-lite-1.0/core/include/prometheus/collectable.h

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+#pragma once
+
+#include <vector>
+
+#include "prometheus/metric_family.h"
+
+namespace prometheus {
+
+  /// @brief Interface implemented by anything that can be used by Prometheus to
+  /// collect metrics.
+  ///
+  /// A Collectable has to be registered for collection. See Registry.
+  class Collectable {
+
+    public:
+
+      //Collectable() = default;
+
+      virtual ~Collectable() = default;
+
+      using MetricFamilies = std::vector<MetricFamily>;
+
+      /// \brief Returns a list of metrics and their samples.
+      virtual MetricFamilies Collect() const = 0;
+  };
+
+}  // namespace prometheus