[dotnet@maximo/otlp-runtime-metrics] Add OTLP runtime metrics system test

.github/workflows/run-end-to-end.yml

@@ -255,6 +255,9 @@ jobs:
     - name: Run LIBRARY_CONF_CUSTOM_HEADER_TAGS_INVALID scenario
       if: always() && steps.build.outcome == 'success' && contains(inputs.scenarios, '"LIBRARY_CONF_CUSTOM_HEADER_TAGS_INVALID"')
       run: ./run.sh LIBRARY_CONF_CUSTOM_HEADER_TAGS_INVALID
+    - name: Run OTLP_RUNTIME_METRICS scenario
+      if: always() && steps.build.outcome == 'success' && contains(inputs.scenarios, '"OTLP_RUNTIME_METRICS"')
+      run: ./run.sh OTLP_RUNTIME_METRICS
     - name: Run RUNTIME_METRICS_ENABLED scenario
       if: always() && steps.build.outcome == 'success' && contains(inputs.scenarios, '"RUNTIME_METRICS_ENABLED"')
       run: ./run.sh RUNTIME_METRICS_ENABLED

manifests/cpp.yml

@@ -310,5 +310,6 @@ manifest:
   tests/test_library_logs.py::Test_NoExceptions::test_dotnet: irrelevant (only for .NET)
   tests/test_library_logs.py::Test_NoExceptions::test_java_logs: irrelevant (only for Java)
   tests/test_library_logs.py::Test_NoExceptions::test_java_telemetry_logs: irrelevant (only for Java)
+  tests/test_otlp_runtime_metrics.py::Test_OtlpRuntimeMetrics: missing_feature
   tests/test_telemetry.py::Test_Telemetry::test_telemetry_message_has_datadog_container_id: "irrelevant (cgroup in weblog is 0::/, so this test can't work)"
   tests/test_telemetry.py::Test_Telemetry::test_telemetry_message_required_headers: missing_feature

manifests/dotnet.yml

@@ -1123,6 +1123,7 @@ manifest:
   tests/test_library_conf.py::Test_HeaderTags_Wildcard_Response_Headers: missing_feature
   tests/test_library_logs.py::Test_NoExceptions::test_java_logs: irrelevant (only for Java)
   tests/test_library_logs.py::Test_NoExceptions::test_java_telemetry_logs: irrelevant (only for Java)
+  tests/test_otlp_runtime_metrics.py::Test_OtlpRuntimeMetrics: v3.42.0
   tests/test_profiling.py::Test_Profile:
     - weblog_declaration:
         "*": v1.0  # real version not known

manifests/golang.yml

@@ -1392,6 +1392,7 @@ manifest:
   tests/test_library_logs.py::Test_NoExceptions::test_dotnet: irrelevant (only for .NET)
   tests/test_library_logs.py::Test_NoExceptions::test_java_logs: irrelevant (only for Java)
   tests/test_library_logs.py::Test_NoExceptions::test_java_telemetry_logs: irrelevant (only for Java)
+  tests/test_otlp_runtime_metrics.py::Test_OtlpRuntimeMetrics: missing_feature
   tests/test_profiling.py::Test_Profile::test_process_tags_svc: missing_feature
   tests/test_protobuf.py: missing_feature
   tests/test_resource_renaming.py:

manifests/java.yml

@@ -4216,6 +4216,7 @@ manifest:
         akka-http: irrelevant (integration injects Date header after bytecode injection occurs)
         play: irrelevant (integration injects Date header after bytecode injection occurs)
   tests/test_library_logs.py::Test_NoExceptions::test_dotnet: irrelevant (only for .NET)
+  tests/test_otlp_runtime_metrics.py::Test_OtlpRuntimeMetrics: missing_feature
   tests/test_profiling.py::Test_Profile:
     - weblog_declaration:
         akka-http: v1.22.0

manifests/nodejs.yml

@@ -2310,6 +2310,7 @@ manifest:
   tests/test_library_logs.py::Test_NoExceptions::test_dotnet: irrelevant (only for .NET)
   tests/test_library_logs.py::Test_NoExceptions::test_java_logs: irrelevant (only for Java)
   tests/test_library_logs.py::Test_NoExceptions::test_java_telemetry_logs: irrelevant (only for Java)
+  tests/test_otlp_runtime_metrics.py::Test_OtlpRuntimeMetrics: missing_feature
   tests/test_profiling.py::Test_Profile: *ref_5_16_0
   tests/test_profiling.py::Test_Profile::test_process_tags: missing_feature
   tests/test_profiling.py::Test_Profile::test_process_tags_svc: missing_feature

manifests/php.yml

@@ -996,6 +996,7 @@ manifest:
   tests/test_library_logs.py::Test_NoExceptions::test_dotnet: irrelevant (only for .NET)
   tests/test_library_logs.py::Test_NoExceptions::test_java_logs: irrelevant (only for Java)
   tests/test_library_logs.py::Test_NoExceptions::test_java_telemetry_logs: irrelevant (only for Java)
+  tests/test_otlp_runtime_metrics.py::Test_OtlpRuntimeMetrics: missing_feature
   tests/test_profiling.py::Test_Profile:
     - declaration: missing_feature (profiling seems not to be activated)
       component_version: <1.16.0

manifests/python.yml

@@ -2152,6 +2152,7 @@ manifest:
   tests/test_library_logs.py::Test_NoExceptions::test_dotnet: irrelevant (only for .NET)
   tests/test_library_logs.py::Test_NoExceptions::test_java_logs: irrelevant (only for Java)
   tests/test_library_logs.py::Test_NoExceptions::test_java_telemetry_logs: irrelevant (only for Java)
+  tests/test_otlp_runtime_metrics.py::Test_OtlpRuntimeMetrics: missing_feature
   tests/test_profiling.py::Test_Profile:
     - weblog_declaration:
         "*": v0.1  # actual version unknown

manifests/ruby.yml

@@ -1938,6 +1938,7 @@ manifest:
   tests/test_library_logs.py::Test_NoExceptions::test_dotnet: irrelevant (only for .NET)
   tests/test_library_logs.py::Test_NoExceptions::test_java_logs: irrelevant (only for Java)
   tests/test_library_logs.py::Test_NoExceptions::test_java_telemetry_logs: irrelevant (only for Java)
+  tests/test_otlp_runtime_metrics.py::Test_OtlpRuntimeMetrics: missing_feature
   tests/test_profiling.py::Test_Profile:  # Modified by easy win activation script
     - declaration: missing_feature (temporary fix, scenario not working on dd-trace-rb CI)
       component_version: <2.24.0

tests/test_otlp_runtime_metrics.py

@@ -0,0 +1,141 @@
+"""Test that runtime metrics are exported via OTLP using OTel semantic convention names.
+
+When DD_RUNTIME_METRICS_ENABLED=true and DD_METRICS_OTEL_ENABLED=true, dd-trace-*
+libraries should send runtime metrics via OTLP with OTel-native naming (dotnet.*,
+jvm.*, go.*, v8js.*, etc.) instead of DD-proprietary naming (runtime.dotnet.*,
+runtime.go.*, runtime.node.*, etc.).
+
+Related PRs:
+- .NET: https://github.com/DataDog/dd-trace-dotnet/pull/8299
+- Go: https://github.com/DataDog/dd-trace-go/pull/4611
+- Node.js: https://github.com/DataDog/dd-trace-js/pull/7869
+- Java: https://github.com/DataDog/dd-trace-java/pull/10985
+"""
+
+from utils import context, features, interfaces, scenarios, weblog
+
+
+# All OTel semconv metric names that MUST be present per language.
+# These are the complete instrument sets from each tracer's OTLP runtime metrics implementation.
+EXPECTED_METRICS = {
+    "dotnet": [
+        "dotnet.assembly.count",
+        "dotnet.exceptions",
+        "dotnet.gc.collections",
+        "dotnet.gc.heap.total_allocated",
+        "dotnet.gc.last_collection.heap.fragmentation.size",
+        "dotnet.gc.last_collection.heap.size",
+        "dotnet.gc.last_collection.memory.committed_size",
+        "dotnet.gc.pause.time",
+        "dotnet.jit.compilation.time",
+        "dotnet.jit.compiled_il.size",
+        "dotnet.jit.compiled_methods",
+        "dotnet.monitor.lock_contentions",
+        "dotnet.process.cpu.count",
+        "dotnet.process.cpu.time",
+        "dotnet.process.memory.working_set",
+        "dotnet.thread_pool.queue.length",
+        "dotnet.thread_pool.thread.count",
+        "dotnet.thread_pool.work_item.count",
+        "dotnet.timer.count",
+    ],
+    "golang": [
+        "go.config.gogc",
+        "go.goroutine.count",
+        "go.memory.allocated",
+        "go.memory.allocations",
+        "go.memory.gc.goal",
+        "go.memory.limit",
+        "go.memory.used",
+        "go.processor.limit",
+    ],
+    "nodejs": [
+        "nodejs.eventloop.delay.max",
+        "nodejs.eventloop.delay.mean",
+        "nodejs.eventloop.delay.min",
+        "nodejs.eventloop.delay.p50",
+        "nodejs.eventloop.delay.p90",
+        "nodejs.eventloop.delay.p99",
+        "nodejs.eventloop.utilization",
+        "process.cpu.utilization",
+        "process.memory.usage",
+        "v8js.memory.heap.limit",
+        "v8js.memory.heap.space.available_size",
+        "v8js.memory.heap.space.physical_size",
+        "v8js.memory.heap.used",
+    ],
+    "java": [
+        "jvm.buffer.count",
+        "jvm.buffer.memory.limit",
+        "jvm.buffer.memory.used",
+        "jvm.class.count",
+        "jvm.class.loaded",
+        "jvm.class.unloaded",
+        "jvm.cpu.count",
+        "jvm.cpu.recent_utilization",
+        "jvm.cpu.time",
+        "jvm.file_descriptor.count",
+        "jvm.file_descriptor.limit",
+        "jvm.memory.committed",
+        "jvm.memory.init",
+        "jvm.memory.limit",
+        "jvm.memory.used",
+        "jvm.memory.used_after_last_gc",
+        "jvm.system.cpu.utilization",
+        "jvm.thread.count",
+    ],
+}
+
+# DD-proprietary prefixes that should NOT appear when OTLP metrics are active
+DD_PROPRIETARY_PREFIXES = {
+    "dotnet": "runtime.dotnet.",
+    "golang": "runtime.go.",
+    "nodejs": "runtime.node.",
+    "java": "jvm.heap_memory",
+}
+
+
+def get_runtime_metric_names():
+    """Extract runtime metric names from the agent interface (agent -> backend series).
+
+    Uses interfaces.agent.get_metrics() — the same approach as
+    Test_Config_RuntimeMetrics_Enabled in test_config_consistency.py.
+    """
+    metric_names = set()
+    for _, metric in interfaces.agent.get_metrics():
+        metric_names.add(metric["metric"])
+    return metric_names
+
+
+@scenarios.otlp_runtime_metrics
+@features.runtime_metrics
+class Test_OtlpRuntimeMetrics:
+    """Verify runtime metrics are sent via OTLP with OTel names, not DD-proprietary names."""
+
+    def setup_main(self):
+        self.req = weblog.get("/")
+
+    def test_main(self):
+        assert self.req.status_code == 200
+
+        library = context.library.name
+        if library not in EXPECTED_METRICS:
+            return
+
+        metric_names = get_runtime_metric_names()
+
+        # All expected OTel-named metrics must be present
+        expected = EXPECTED_METRICS[library]
+        for expected_name in expected:
+            assert expected_name in metric_names, (
+                f"Expected OTel runtime metric '{expected_name}' not found for {library}. "
+                f"Got metrics: {sorted(metric_names)}"
+            )
+
+        # DD-proprietary names must NOT be present
+        dd_prefix = DD_PROPRIETARY_PREFIXES.get(library)
+        if dd_prefix:
+            dd_named_metrics = [n for n in metric_names if n.startswith(dd_prefix)]
+            assert len(dd_named_metrics) == 0, (
+                f"Found DD-proprietary metric names for {library}: {dd_named_metrics}. Expected OTel-native names only."
+            )

utils/_context/_scenarios/__init__.py

@@ -1188,6 +1188,19 @@ class _Scenarios:
         doc="Test runtime metrics",
     )
 
+    otlp_runtime_metrics = EndToEndScenario(
+        "OTLP_RUNTIME_METRICS",
+        weblog_env={
+            "DD_METRICS_OTEL_ENABLED": "true",
+            "OTEL_EXPORTER_OTLP_PROTOCOL": "http/protobuf",
+            "OTEL_EXPORTER_OTLP_METRICS_ENDPOINT": f"http://proxy:{ProxyPorts.open_telemetry_weblog}/v1/metrics",
+            "OTEL_EXPORTER_OTLP_METRICS_HEADERS": "dd-protocol=otlp,dd-otlp-path=agent",
+        },
+        runtime_metrics_enabled=True,
+        library_interface_timeout=20,
+        doc="Test runtime metrics exported via OTLP with OTel semantic convention names",
+    )
+
     # Appsec Lambda Scenarios
     appsec_lambda_default = LambdaScenario(
         "APPSEC_LAMBDA_DEFAULT",

utils/scripts/ci_orchestrators/workflow_data.py

@@ -635,6 +635,7 @@ def _is_supported(library: str, weblog: str, scenario: str, _ci_environment: str
             "IPV6",
             "LIBRARY_CONF_CUSTOM_HEADER_TAGS",
             "LIBRARY_CONF_CUSTOM_HEADER_TAGS_INVALID",
+            "OTLP_RUNTIME_METRICS",
             "PERFORMANCES",
             "PROFILING",
             "REMOTE_CONFIG_MOCKED_BACKEND_ASM_DD",