Deprecate otlp_proto_grpc and otlp_proto_http in auto-instrumentation (#1250)

Author: Ron Yishai

CHANGELOG.md

@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://github.com/open-telemetry/opentelemetry-python/compare/v1.13.0-0.34b0...HEAD)
 
+### Deprecated
+
+- `opentelemetry-distro` Deprecate `otlp_proto_grpc` and `otlp_proto_http` in favor of using
+  `OTEL_EXPORTER_OTLP_TRACES_PROTOCOL` as according to specifications
+  ([#1250](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1250))
 
 ### Added
 

opentelemetry-distro/src/opentelemetry/distro/__init__.py

@@ -20,6 +20,7 @@
 )
 from opentelemetry.instrumentation.distro import BaseDistro
 from opentelemetry.sdk._configuration import _OTelSDKConfigurator
+from opentelemetry.sdk.environment_variables import OTEL_EXPORTER_OTLP_PROTOCOL
 
 
 class OpenTelemetryConfigurator(_OTelSDKConfigurator):
@@ -34,5 +35,6 @@ class OpenTelemetryDistro(BaseDistro):
 
     # pylint: disable=no-self-use
     def _configure(self, **kwargs):
-        os.environ.setdefault(OTEL_TRACES_EXPORTER, "otlp_proto_grpc")
-        os.environ.setdefault(OTEL_METRICS_EXPORTER, "otlp_proto_grpc")
+        os.environ.setdefault(OTEL_TRACES_EXPORTER, "otlp")
+        os.environ.setdefault(OTEL_METRICS_EXPORTER, "otlp")
+        os.environ.setdefault(OTEL_EXPORTER_OTLP_PROTOCOL, "grpc")

opentelemetry-distro/tests/test_distro.py

@@ -19,7 +19,11 @@
 from pkg_resources import DistributionNotFound, require
 
 from opentelemetry.distro import OpenTelemetryDistro
-from opentelemetry.environment_variables import OTEL_TRACES_EXPORTER
+from opentelemetry.environment_variables import (
+    OTEL_METRICS_EXPORTER,
+    OTEL_TRACES_EXPORTER,
+)
+from opentelemetry.sdk.environment_variables import OTEL_EXPORTER_OTLP_PROTOCOL
 
 
 class TestDistribution(TestCase):
@@ -32,7 +36,14 @@ def test_package_available(self):
     def test_default_configuration(self):
         distro = OpenTelemetryDistro()
         self.assertIsNone(os.environ.get(OTEL_TRACES_EXPORTER))
+        self.assertIsNone(os.environ.get(OTEL_METRICS_EXPORTER))
         distro.configure()
         self.assertEqual(
-            "otlp_proto_grpc", os.environ.get(OTEL_TRACES_EXPORTER)
+            "otlp", os.environ.get(OTEL_TRACES_EXPORTER)
+        )
+        self.assertEqual(
+            "otlp", os.environ.get(OTEL_METRICS_EXPORTER)
+        )
+        self.assertEqual(
+            "grpc", os.environ.get(OTEL_EXPORTER_OTLP_PROTOCOL)
         )

opentelemetry-instrumentation/README.rst

@@ -57,6 +57,7 @@ The command supports the following configuration options as CLI arguments and en
 
 
 * ``--traces_exporter`` or ``OTEL_TRACES_EXPORTER``
+* ``--metrics_exporter`` or ``OTEL_METRICS_EXPORTER``
 
 Used to specify which trace exporter to use. Can be set to one or more of the well-known exporter
 names (see below).
@@ -71,13 +72,14 @@ Well known trace exporter names:
     - jaeger_proto
     - jaeger_thrift
     - opencensus
-    - otlp
-    - otlp_proto_grpc
-    - otlp_proto_http
     - zipkin_json
     - zipkin_proto
+    - otlp
+    - otlp_proto_grpc (`deprecated`)
+    - otlp_proto_http (`deprecated`)
 
-``otlp`` is an alias for ``otlp_proto_grpc``.
+Note: The default transport protocol for ``otlp`` is gRPC.
+HTTP is currently supported for traces only, and should be set using ``OTEL_EXPORTER_OTLP_TRACES_PROTOCOL=http/protobuf``
 
 * ``--id-generator`` or ``OTEL_PYTHON_ID_GENERATOR``