[opentelemetry-instrumentation] add version flag (#1065)

CHANGELOG.md

@@ -14,6 +14,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Refactoring custom header collection API for consistency
   ([#1064](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1064))
 
+### Added
+- `opentelemetry-instrument` and `opentelemetry-bootstrap` now include a `--version` flag
+  ([#1065](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1065))
+
 ## [1.11.1-0.30b1](https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.11.1-0.30b1) - 2022-04-21
 
 ### Added

opentelemetry-instrumentation/src/opentelemetry/instrumentation/auto_instrumentation/__init__.py

@@ -23,6 +23,8 @@
 
 from pkg_resources import iter_entry_points
 
+from opentelemetry.instrumentation.version import __version__
+
 _logger = getLogger(__name__)
 
 
@@ -34,7 +36,7 @@ def run() -> None:
         program and its dependencies and then runs the program.
         """,
         epilog="""
-        Optional arguments (except for --help) for opentelemetry-instrument
+        Optional arguments (except for --help and --version) for opentelemetry-instrument
         directly correspond with OpenTelemetry environment variables. The
         corresponding optional argument is formed by removing the OTEL_ or
         OTEL_PYTHON_ prefix from the environment variable and lower casing the
@@ -66,6 +68,12 @@ def run() -> None:
                 )
                 argument_otel_environment_variable[argument] = attribute
 
+    parser.add_argument(
+        "--version",
+        help="print version information",
+        action="version",
+        version="%(prog)s " + __version__,
+    )
     parser.add_argument("command", help="Your Python application.")
     parser.add_argument(
         "command_args",

opentelemetry-instrumentation/src/opentelemetry/instrumentation/bootstrap.py

@@ -25,6 +25,7 @@
     default_instrumentations,
     libraries,
 )
+from opentelemetry.instrumentation.version import __version__
 
 logger = logging.getLogger(__name__)
 
@@ -133,6 +134,12 @@ def run() -> None:
         installs the relevant instrumentation packages for them.
         """
     )
+    parser.add_argument(
+        "--version",
+        help="print version information",
+        action="version",
+        version="%(prog)s " + __version__,
+    )
     parser.add_argument(
         "-a",
         "--action",