Add http exporter oteltest.

Move sf token constant.

src/splunk_otel/distro.py

@@ -31,7 +31,6 @@
     SPLUNK_PROFILER_ENABLED,
     SPLUNK_PROFILER_LOGS_ENDPOINT,
     SPLUNK_TRACE_RESPONSE_HEADER_ENABLED,
-    X_SF_TOKEN,
     Env,
 )
 from splunk_otel.propagator import ServerTimingResponsePropagator
@@ -42,6 +41,7 @@
 Set your service name using the OTEL_SERVICE_NAME environment variable.
 e.g. `OTEL_SERVICE_NAME="<YOUR_SERVICE_NAME_HERE>"`"""
 _DEFAULT_SERVICE_NAME = "unnamed-python-service"
+_X_SF_TOKEN = "x-sf-token"  # noqa S105
 
 _pylogger = logging.getLogger(__name__)
 
@@ -87,7 +87,7 @@ def set_resource_attributes(self):
     def configure_headers(self):
         tok = self.env.getval(SPLUNK_ACCESS_TOKEN).strip()
         if tok:
-            self.env.list_append(OTEL_EXPORTER_OTLP_HEADERS, f"{X_SF_TOKEN}={tok}")
+            self.env.list_append(OTEL_EXPORTER_OTLP_HEADERS, f"{_X_SF_TOKEN}={tok}")
 
     def set_server_timing_propagator(self):
         if self.env.is_true(SPLUNK_TRACE_RESPONSE_HEADER_ENABLED, "true"):

src/splunk_otel/env.py

@@ -40,8 +40,6 @@
 SPLUNK_PROFILER_CALL_STACK_INTERVAL = "SPLUNK_PROFILER_CALL_STACK_INTERVAL"
 SPLUNK_PROFILER_LOGS_ENDPOINT = "SPLUNK_PROFILER_LOGS_ENDPOINT"
 
-X_SF_TOKEN = "x-sf-token"  # noqa S105
-
 _pylogger = logging.getLogger(__name__)
 
 

tests/ott_http.py

@@ -0,0 +1,30 @@
+from ott_lib import project_path, trace_loop
+
+if __name__ == "__main__":
+    trace_loop(1)
+
+
+class MyOtelTest:
+    def requirements(self):
+        return (project_path(),)
+
+    def environment_variables(self):
+        return {
+            "OTEL_SERVICE_NAME": "my-otel-test",
+            "OTEL_EXPORTER_OTLP_PROTOCOL": "http/protobuf",
+            "OTEL_PYTHON_DISABLED_INSTRUMENTATIONS": "system_metrics",
+        }
+
+    def wrapper_command(self):
+        return "opentelemetry-instrument"
+
+    def on_start(self):
+        return None
+
+    def on_stop(self, telemetry, stdout: str, stderr: str, returncode: int) -> None:
+        from oteltest.telemetry import count_spans
+
+        assert count_spans(telemetry)
+
+    def is_http(self):
+        return True