statsd for cas (#511)

* separate statsd interfaces so they can be accessible to zenstore
* statsd for cas

1 files changed, 34 insertions, 0 deletions

diff --git a/src/zenutil/include/zenutil/statsreporter.h b/src/zenutil/include/zenutil/statsreporter.h
new file mode 100644
index 000000000..a25e5d353
--- /dev/null
+++ b/src/zenutil/include/zenutil/statsreporter.h
@@ -0,0 +1,34 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include <zencore/zencore.h>
+
+namespace zen {
+
+class StatsProvider;
+
+class StatsMetrics
+{
+public:
+	virtual void Increment(std::string_view Metric)						 = 0;
+	virtual void Decrement(std::string_view Metric)						 = 0;
+	virtual void Count(std::string_view Metric, int64_t CountDelta)		 = 0;
+	virtual void Gauge(std::string_view Metric, uint64_t CurrentValue)	 = 0;
+	virtual void Meter(std::string_view Metric, uint64_t IncrementValue) = 0;
+
+	// Not (yet) implemented: Set,Timing
+protected:
+	virtual ~StatsMetrics() = default;
+};
+
+class StatsProvider
+{
+public:
+	virtual void ReportMetrics(StatsMetrics& Statsd) = 0;
+
+protected:
+	virtual ~StatsProvider() = default;
+};
+
+}  // namespace zen