add tracing config test

rasa_sdk/endpoint.py

@@ -76,6 +76,7 @@ def create_app(
             from.
         cors_origins: CORS origins to allow.
         auto_reload: When `True`, auto-reloading of actions is enabled.
+        tracer_provider: Tracer provider to use for tracing.
 
     Returns:
         A new Sanic application ready to be run.

tests/tracing/conftest.py

@@ -0,0 +1,74 @@
+import pathlib
+import socket
+from concurrent import futures
+from typing import Generator, Optional
+
+import grpc
+import opentelemetry.proto.collector.trace.v1.trace_service_pb2_grpc as trace_service
+import pytest
+from google.protobuf.internal.containers import RepeatedCompositeFieldContainer
+from opentelemetry.exporter.jaeger.thrift.gen.agent.Agent import emitBatch_args
+from opentelemetry.exporter.jaeger.thrift.gen.jaeger.ttypes import Batch
+from opentelemetry.proto.collector.trace.v1.trace_service_pb2 import (
+    ExportTraceServiceRequest,
+    ExportTraceServiceResponse,
+)
+from opentelemetry.proto.trace.v1.trace_pb2 import ResourceSpans
+from thrift.protocol.TCompactProtocol import TCompactProtocol
+from thrift.transport.TTransport import TMemoryBuffer
+
+
+TRACING_TESTS_FIXTURES_DIRECTORY = pathlib.Path(__file__).parent / "fixtures"
+
+
+@pytest.fixture
+def udp_server() -> Generator[socket.socket, None, None]:
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    sock.bind(("localhost", 6832))
+    yield sock
+    sock.close()
+
+
+class CapturingTestSpanExporter(trace_service.TraceServiceServicer):
+    def __init__(self) -> None:
+        self.spans: Optional[RepeatedCompositeFieldContainer[ResourceSpans]] = None
+
+    def Export(
+        self, request: ExportTraceServiceRequest, context: grpc.ServicerContext
+    ) -> ExportTraceServiceResponse:
+        self.spans = request.resource_spans
+
+        return ExportTraceServiceResponse()
+
+
+@pytest.fixture
+def span_exporter() -> CapturingTestSpanExporter:
+    return CapturingTestSpanExporter()
+
+
+@pytest.fixture
+def grpc_server(
+    span_exporter: CapturingTestSpanExporter,
+) -> Generator[grpc.Server, None, None]:
+    server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
+
+    trace_service.add_TraceServiceServicer_to_server(  # type: ignore
+        span_exporter, server
+    )
+
+    server.add_insecure_port("[::]:4317")
+
+    server.start()
+    yield server
+    server.stop(None)
+
+
+def deserialize_jaeger_batch(data: bytearray) -> Batch:
+    trans = TMemoryBuffer(data)
+    prot = TCompactProtocol(trans)
+    prot.readMessageBegin()
+    emitBatch = emitBatch_args()  # type: ignore
+    emitBatch.read(prot)  # type: ignore
+    prot.readMessageEnd()
+
+    return emitBatch.batch

tests/tracing/fixtures/jaeger_endpoints.yml

@@ -0,0 +1,4 @@
+tracing:
+  type: jaeger
+  host: localhost
+  port: 6832

tests/tracing/fixtures/otlp_endpoints.yml

@@ -0,0 +1,4 @@
+tracing:
+  type: otlp
+  endpoint: localhost:4317
+  insecure: true

tests/tracing/test_config.py

@@ -0,0 +1,60 @@
+import socket
+
+from rasa_sdk.tracing.endpoints import EndpointConfig
+
+from rasa_sdk.tracing import config
+from rasa_sdk.tracing.config import JaegerTracerConfigurer
+from tests.tracing import conftest
+from tests.tracing.conftest import (
+    TRACING_TESTS_FIXTURES_DIRECTORY,
+)
+
+UDP_BUFFER_SIZE = 2048
+
+
+def test_jaeger_config_correctly_extracted() -> None:
+    cfg = EndpointConfig(
+        host="hostname",
+        port=1234,
+        username="user",
+        password="password",
+    )
+
+    extracted = JaegerTracerConfigurer._extract_config(cfg)
+
+    assert extracted["agent_host_name"] == cfg.kwargs["host"]
+    assert extracted["agent_port"] == cfg.kwargs["port"]
+    assert extracted["username"] == cfg.kwargs["username"]
+    assert extracted["password"] == cfg.kwargs["password"]
+
+
+def test_jaeger_config_sets_defaults() -> None:
+    extracted = JaegerTracerConfigurer._extract_config(EndpointConfig())
+
+    assert extracted["agent_host_name"] == "localhost"
+    assert extracted["agent_port"] == 6831
+    assert extracted["username"] is None
+    assert extracted["password"] is None
+
+
+def test_get_tracer_provider_jaeger(udp_server: socket.socket) -> None:
+    endpoints_file = str(TRACING_TESTS_FIXTURES_DIRECTORY / "jaeger_endpoints.yml")
+
+    tracer_provider = config.get_tracer_provider(endpoints_file)
+    assert tracer_provider is not None
+
+    tracer = tracer_provider.get_tracer(__name__)
+
+    with tracer.start_as_current_span("jaeger_test_span"):
+        pass
+
+    tracer_provider.force_flush()
+
+    message, _ = udp_server.recvfrom(UDP_BUFFER_SIZE)
+
+    batch = conftest.deserialize_jaeger_batch(bytearray(message))
+
+    assert batch.process.serviceName == "rasa_sdk"
+
+    assert len(batch.spans) == 1
+    assert batch.spans[0].operationName == "jaeger_test_span"