From 5c139e2d8a260544bc5e730de0440edbab4b0f03 Mon Sep 17 00:00:00 2001
From: Stefan Boberg <stefan.boberg@epicgames.com>
Date: Wed, 22 Oct 2025 17:57:29 +0200
Subject: add support for OTLP logging/tracing (#599)

- adds `zentelemetry` project which houses new functionality for serializing logs and traces in OpenTelemetry Protocol format (OTLP)
- moved existing stats functionality from `zencore` to `zentelemetry`
- adds `TRefCounted<T>` for vtable-less refcounting
- adds `MemoryArena` class which allows for linear allocation of memory from chunks
- adds `protozero` which is used to encode OTLP protobuf messages
---
 src/zenserver/diag/logging.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/zenserver/diag/logging.cpp')

diff --git a/src/zenserver/diag/logging.cpp b/src/zenserver/diag/logging.cpp
index 50cf62274..90af79651 100644
--- a/src/zenserver/diag/logging.cpp
+++ b/src/zenserver/diag/logging.cpp
@@ -12,6 +12,8 @@
 #include <zenutil/logging.h>
 #include <zenutil/logging/rotatingfilesink.h>
 
+#include "otlphttp.h"
+
 ZEN_THIRD_PARTY_INCLUDES_START
 #include <spdlog/spdlog.h>
 ZEN_THIRD_PARTY_INCLUDES_END
@@ -73,6 +75,16 @@ InitializeServerLogging(const ZenServerConfig& InOptions)
 	spdlog::apply_logger_env_levels(ZenClientLogger);
 	spdlog::register_logger(ZenClientLogger);
 
+	//
+
+#if ZEN_WITH_OTEL
+	if (false)
+	{
+		auto OtelSink = std::make_shared<zen::logging::OtelHttpProtobufSink>("http://signoz.localdomain:4318");
+		zen::logging::Default().SpdLogger->sinks().push_back(std::move(OtelSink));
+	}
+#endif
+
 	FinishInitializeLogging(LogOptions);
 
 	const zen::Oid ServerSessionId = zen::GetSessionId();
-- 
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