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Refactored sitecustomize and added tests
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jeremydvoss committed Jun 1, 2023
1 parent edafb0a commit 2a97615
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# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from logging import getLogger
from os import environ

from pkg_resources import iter_entry_points

from opentelemetry.instrumentation.dependencies import (
get_dist_dependency_conflicts,
)
from opentelemetry.instrumentation.distro import BaseDistro, DefaultDistro
from opentelemetry.instrumentation.environment_variables import (
OTEL_PYTHON_CONFIGURATOR,
OTEL_PYTHON_DISABLED_INSTRUMENTATIONS,
OTEL_PYTHON_DISTRO,
)
from opentelemetry.instrumentation.version import __version__

logger = getLogger(__name__)


def _load_distros() -> BaseDistro:
distro_name = environ.get(OTEL_PYTHON_DISTRO, None)
for entry_point in iter_entry_points("opentelemetry_distro"):
try:
if distro_name is None or distro_name == entry_point.name:
distro = entry_point.load()()
if not isinstance(distro, BaseDistro):
logger.debug(
"%s is not an OpenTelemetry Distro. Skipping",
entry_point.name,
)
continue
logger.debug(
"Distribution %s will be configured", entry_point.name
)
return distro
except Exception as exc: # pylint: disable=broad-except
logger.exception(
"Distribution %s configuration failed", entry_point.name
)
raise exc
return DefaultDistro()


def _load_instrumentors(distro):
package_to_exclude = environ.get(OTEL_PYTHON_DISABLED_INSTRUMENTATIONS, [])
if isinstance(package_to_exclude, str):
package_to_exclude = package_to_exclude.split(",")
# to handle users entering "requests , flask" or "requests, flask" with spaces
package_to_exclude = [x.strip() for x in package_to_exclude]

for entry_point in iter_entry_points("opentelemetry_pre_instrument"):
entry_point.load()()

for entry_point in iter_entry_points("opentelemetry_instrumentor"):
if entry_point.name in package_to_exclude:
logger.debug(
"Instrumentation skipped for library %s", entry_point.name
)
continue

try:
conflict = get_dist_dependency_conflicts(entry_point.dist)
if conflict:
logger.debug(
"Skipping instrumentation %s: %s",
entry_point.name,
conflict,
)
continue

# tell instrumentation to not run dep checks again as we already did it above
distro.load_instrumentor(entry_point, skip_dep_check=True)
logger.debug("Instrumented %s", entry_point.name)
except Exception as exc: # pylint: disable=broad-except
logger.exception("Instrumenting of %s failed", entry_point.name)
raise exc

for entry_point in iter_entry_points("opentelemetry_post_instrument"):
entry_point.load()()


def _load_configurators():
configurator_name = environ.get(OTEL_PYTHON_CONFIGURATOR, None)
configured = None
for entry_point in iter_entry_points("opentelemetry_configurator"):
if configured is not None:
logger.warning(
"Configuration of %s not loaded, %s already loaded",
entry_point.name,
configured,
)
continue
try:
if (
configurator_name is None
or configurator_name == entry_point.name
):
entry_point.load()().configure(auto_instrumentation_version=__version__) # type: ignore
configured = entry_point.name
else:
logger.warning(
"Configuration of %s not loaded because %s is set by %s",
entry_point.name,
configurator_name,
OTEL_PYTHON_CONFIGURATOR,
)
except Exception as exc: # pylint: disable=broad-except
logger.exception("Configuration of %s failed", entry_point.name)
raise exc
Original file line number Diff line number Diff line change
Expand Up @@ -16,122 +16,16 @@
from os import environ
from os.path import abspath, dirname, pathsep

from pkg_resources import iter_entry_points

from opentelemetry.instrumentation.dependencies import (
get_dist_dependency_conflicts,
)
from opentelemetry.instrumentation.distro import BaseDistro, DefaultDistro
from opentelemetry.instrumentation.environment_variables import (
OTEL_PYTHON_CONFIGURATOR,
OTEL_PYTHON_DISABLED_INSTRUMENTATIONS,
OTEL_PYTHON_DISTRO,
from opentelemetry.instrumentation.auto_instrumentation._load import (
_load_configurators,
_load_distros,
_load_instrumentors,
)
from opentelemetry.instrumentation.utils import _python_path_without_directory
from opentelemetry.instrumentation.version import __version__

logger = getLogger(__name__)


def _load_distros() -> BaseDistro:
distro_name = environ.get(OTEL_PYTHON_DISTRO, None)
for entry_point in iter_entry_points("opentelemetry_distro"):
try:
if distro_name is None or distro_name == entry_point.name:
distro = entry_point.load()()
if not isinstance(distro, BaseDistro):
logger.debug(
"%s is not an OpenTelemetry Distro. Skipping",
entry_point.name,
)
continue
logger.debug(
"Distribution %s will be configured", entry_point.name
)
return distro
else:
logger.warning(
"%s distro not loaded because %s is set by %s",
entry_point.name,
distro_name,
OTEL_PYTHON_DISTRO,
)
except Exception as exc: # pylint: disable=broad-except
logger.exception(
"Distribution %s configuration failed", entry_point.name
)
raise exc
return DefaultDistro()


def _load_instrumentors(distro):
package_to_exclude = environ.get(OTEL_PYTHON_DISABLED_INSTRUMENTATIONS, [])
if isinstance(package_to_exclude, str):
package_to_exclude = package_to_exclude.split(",")
# to handle users entering "requests , flask" or "requests, flask" with spaces
package_to_exclude = [x.strip() for x in package_to_exclude]

for entry_point in iter_entry_points("opentelemetry_pre_instrument"):
entry_point.load()()

for entry_point in iter_entry_points("opentelemetry_instrumentor"):
if entry_point.name in package_to_exclude:
logger.debug(
"Instrumentation skipped for library %s", entry_point.name
)
continue

try:
conflict = get_dist_dependency_conflicts(entry_point.dist)
if conflict:
logger.debug(
"Skipping instrumentation %s: %s",
entry_point.name,
conflict,
)
continue

# tell instrumentation to not run dep checks again as we already did it above
distro.load_instrumentor(entry_point, skip_dep_check=True)
logger.debug("Instrumented %s", entry_point.name)
except Exception as exc: # pylint: disable=broad-except
logger.exception("Instrumenting of %s failed", entry_point.name)
raise exc

for entry_point in iter_entry_points("opentelemetry_post_instrument"):
entry_point.load()()


def _load_configurators():
configurator_name = environ.get(OTEL_PYTHON_CONFIGURATOR, None)
configured = None
for entry_point in iter_entry_points("opentelemetry_configurator"):
if configured is not None:
logger.warning(
"Configuration of %s not loaded, %s already loaded",
entry_point.name,
configured,
)
continue
try:
if (
configurator_name is None
or configurator_name == entry_point.name
):
entry_point.load()().configure(auto_instrumentation_version=__version__) # type: ignore
configured = entry_point.name
else:
logger.warning(
"Configuration of %s not loaded because %s is set by %s",
entry_point.name,
configurator_name,
OTEL_PYTHON_CONFIGURATOR,
)
except Exception as exc: # pylint: disable=broad-except
logger.exception("Configuration of %s failed", entry_point.name)
raise exc


def initialize():
# prevents auto-instrumentation of subprocesses if code execs another python process
environ["PYTHONPATH"] = _python_path_without_directory(
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