sitecustomize.py

# 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.

import os
import sys
from logging import getLogger

from pkg_resources import iter_entry_points


logger = getLogger(__file__)


def auto_instrument():
    for entry_point in iter_entry_points("opentelemetry_instrumentor"):
        try:
            entry_point.load()().instrument()  # type: ignore
            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


def initialize_components():
    for entry_point in iter_entry_points("opentelemetry_configure"):
        try:
            entry_point.load()().configure()  # type: ignore
        except Exception as exc:  # pylint: disable=broad-except
            logger.exception("Configuration of %s failed", entry_point.name)
            raise exc


def initialize():
    try:
        initialize_components()
        auto_instrument()
    except Exception:  # pylint: disable=broad-except
        logger.exception("Failed to auto initialize opentelemetry")


if (
    hasattr(sys, "argv")
    and sys.argv[0].split(os.path.sep)[-1] == "celery"
    and "worker" in sys.argv[1:]
):
    from celery.signals import worker_process_init  # pylint:disable=E0401

    @worker_process_init.connect(weak=False)
    def init_celery(*args, **kwargs):
        initialize()


else:
    initialize()