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__init__.py
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__init__.py
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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.
import re
import time
from logging import getLogger
from typing import TYPE_CHECKING, Sequence, Union, cast
from pkg_resources import iter_entry_points
from opentelemetry.configuration import Configuration
if TYPE_CHECKING:
from opentelemetry.trace import TracerProvider
from opentelemetry.metrics import MeterProvider
Provider = Union["TracerProvider", "MeterProvider"]
logger = getLogger(__name__)
# Since we want API users to be able to provide timestamps,
# this needs to be in the API.
try:
time_ns = time.time_ns
# Python versions < 3.7
except AttributeError:
def time_ns() -> int:
return int(time.time() * 1e9)
def _load_provider(provider: str) -> Provider:
try:
entry_point = next(
iter_entry_points(
"opentelemetry_{}".format(provider),
name=cast(
str,
Configuration().get(
provider.upper(), "default_{}".format(provider),
),
),
)
)
return cast(Provider, entry_point.load()(),)
except Exception: # pylint: disable=broad-except
logger.error("Failed to load configured provider %s", provider)
raise
def _load_meter_provider(provider: str) -> "MeterProvider":
return cast("MeterProvider", _load_provider(provider))
def _load_trace_provider(provider: str) -> "TracerProvider":
return cast("TracerProvider", _load_provider(provider))