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resource/opentelemetry-resource-detector-container/MANIFEST.rst
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graft src
graft tests
global-exclude *.pyc
global-exclude *.pyo
global-exclude __pycache__/*
include CHANGELOG.md
include MANIFEST.in
include README.rst
include LICENSE

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OpenTelemetry Resource detectors for containers
==========================================================
|pypi|
.. |pypi| image:: TODO
:target: TODO
This library provides custom resource detector for container platforms
Installation
------------
::
pip install opentelemetry-resource-detector-container
---------------------------
Usage example for `opentelemetry-resource-detector-container`
.. code-block:: python
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.resource.detector.container import (
ContainerResourceDetector,
)
from opentelemetry.sdk.resources import get_aggregated_resources
trace.set_tracer_provider(
TracerProvider(
resource=get_aggregated_resources(
[
ContainerResourceDetector(),
]
),
)
)
References
----------
* `OpenTelemetry Project <https://opentelemetry.io/>`_

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resource/opentelemetry-resource-detector-container/pyproject.toml
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[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"
[project]
name = "opentelemetry-resource-detector-container"
dynamic = ["version"]
description = "Container Resource Detector for OpenTelemetry"
readme = "README.rst"
license = "Apache-2.0"
requires-python = ">=3.7"
authors = [
{ name = "OpenTelemetry Authors", email = "cncf-opentelemetry-contributors@lists.cncf.io" },
]
classifiers = [
"Development Status :: 5 - Production/Stable",
"Intended Audience :: Developers",
"License :: OSI Approved :: Apache Software License",
"Programming Language :: Python",
"Programming Language :: Python :: 3",
"Programming Language :: Python :: 3.7",
"Programming Language :: Python :: 3.8",
"Programming Language :: Python :: 3.9",
"Programming Language :: Python :: 3.10",
"Programming Language :: Python :: 3.11",
]
dependencies = [
"opentelemetry-sdk ~= 1.12",
]
[project.optional-dependencies]
test = []
[project.entry-points.opentelemetry_resource_detector]
container = "opentelemetry.resource.detector.container:ContainerResourceDetector"
[project.urls]
Homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib/tree/main/resource/opentelemetry-resource-detector-container"
[tool.hatch.version]
path = "src/opentelemetry/resource/detector/container/version.py"
[tool.hatch.build.targets.sdist]
include = [
"/src",
"/tests",
]
[tool.hatch.build.targets.wheel]
packages = ["src/opentelemetry"]

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resource/opentelemetry-resource-detector-container/src/opentelemetry/resource/detector/container/__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.
from logging import getLogger
from opentelemetry.sdk.resources import Resource, ResourceDetector
from opentelemetry.semconv.resource import ResourceAttributes
logger = getLogger(__name__)
_DEFAULT_CGROUP_V1_PATH = "/proc/self/cgroup"
_DEFAULT_CGROUP_V2_PATH = "/proc/self/mountinfo"
_CONTAINER_ID_LENGTH = 64
def _get_container_id_v1():
container_id = None
try:
with open(
_DEFAULT_CGROUP_V1_PATH, encoding="utf8"
) as container_info_file:
for raw_line in container_info_file.readlines():
line = raw_line.strip()
if len(line) > _CONTAINER_ID_LENGTH:
container_id = line[-_CONTAINER_ID_LENGTH:]
break
except FileNotFoundError as exception:
logger.warning("Failed to get container id. Exception: %s", exception)
return container_id
def _get_container_id_v2():
container_id = None
try:
with open(
_DEFAULT_CGROUP_V2_PATH, encoding="utf8"
) as container_info_file:
for raw_line in container_info_file.readlines():
line = raw_line.strip()
if any(
key_word in line for key_word in ["containers", "hostname"]
):
container_id_list = [
id_
for id_ in line.split("/")
if len(id_) == _CONTAINER_ID_LENGTH
]
if len(container_id_list) > 0:
container_id = container_id_list[0]
break
except FileNotFoundError as exception:
logger.warning("Failed to get container id. Exception: %s", exception)
return container_id
def _get_container_id():
return _get_container_id_v1() or _get_container_id_v2()
class ContainerResourceDetector(ResourceDetector):
"""Detects container.id only available when app is running inside the
docker container and return it in a Resource
"""
def detect(self) -> "Resource":
try:
container_id = _get_container_id()
resource = Resource.get_empty()
if container_id:
resource = resource.merge(
Resource({ResourceAttributes.CONTAINER_ID: container_id})
)
return resource
# pylint: disable=broad-except
except Exception as exception:
logger.warning(
"%s Resource Detection failed silently: %s",
self.__class__.__name__,
exception,
)
if self.raise_on_error:
raise exception
return Resource.get_empty()

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resource/opentelemetry-resource-detector-container/src/opentelemetry/resource/detector/container/version.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.
__version__ = "0.42b0"

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resource/opentelemetry-resource-detector-container/tests/__init__.py
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resource/opentelemetry-resource-detector-container/tests/test_container.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.
from unittest.mock import mock_open, patch
from opentelemetry import trace as trace_api
from opentelemetry.resource.detector.container import ContainerResourceDetector
from opentelemetry.sdk.resources import get_aggregated_resources
from opentelemetry.semconv.resource import ResourceAttributes
from opentelemetry.test.test_base import TestBase
MockContainerResourceAttributes = {
ResourceAttributes.CONTAINER_ID: "7be92808767a667f35c8505cbf40d14e931ef6db5b0210329cf193b15ba9d605",
}
class ContainerResourceDetectorTest(TestBase):
@patch(
"builtins.open",
new_callable=mock_open,
read_data=f"""14:name=systemd:/docker/{MockContainerResourceAttributes[ResourceAttributes.CONTAINER_ID]}
13:rdma:/
12:pids:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
11:hugetlb:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
10:net_prio:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
9:perf_event:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
8:net_cls:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
7:freezer:/docker/
6:devices:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
5:memory:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
4:blkio:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
3:cpuacct:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
2:cpu:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
1:cpuset:/docker/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked
""",
)
def test_container_id_detect_from_cgroup_file(self, mock_cgroup_file):
actual = ContainerResourceDetector().detect()
self.assertDictEqual(
actual.attributes.copy(), MockContainerResourceAttributes
)
@patch(
"opentelemetry.resource.detector.container._get_container_id_v1",
return_value=None,
)
@patch(
"builtins.open",
new_callable=mock_open,
read_data=f"""
608 607 0:183 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
609 607 0:184 / /dev rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755
610 609 0:185 / /dev/pts rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666
611 607 0:186 / /sys ro,nosuid,nodev,noexec,relatime - sysfs sysfs ro
612 611 0:29 / /sys/fs/cgroup ro,nosuid,nodev,noexec,relatime - cgroup2 cgroup rw
613 609 0:182 / /dev/mqueue rw,nosuid,nodev,noexec,relatime - mqueue mqueue rw
614 609 0:187 / /dev/shm rw,nosuid,nodev,noexec,relatime - tmpfs shm rw,size=65536k
615 607 254:1 /docker/containers/{MockContainerResourceAttributes[ResourceAttributes.CONTAINER_ID]}/resolv.conf /etc/resolv.conf rw,relatime - ext4 /dev/vda1 rw
616 607 254:1 /docker/containers/{MockContainerResourceAttributes[ResourceAttributes.CONTAINER_ID]}/hostname /etc/hostname rw,relatime - ext4 /dev/vda1 rw
617 607 254:1 /docker/containers/bogusContainerIdThatShouldNotBeOneSetBecauseTheFirstOneWasPicked/hosts /etc/hosts rw,relatime - ext4 /dev/vda1 rw
618 607 0:131 /Users/sankmeht/development/otel/opentelemetry-python /development/otel/opentelemetry-python rw,nosuid,nodev,relatime - fuse.grpcfuse grpcfuse rw,user_id=0,group_id=0,allow_other,max_read=1048576
619 607 0:131 /Users/sankmeht/development/otel/opentelemetry-python-contrib /development/otel/opentelemetry-python-contrib rw,nosuid,nodev,relatime - fuse.grpcfuse grpcfuse rw,user_id=0,group_id=0,allow_other,max_read=1048576
519 609 0:185 /0 /dev/console rw,nosuid,noexec,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=666
520 608 0:183 /bus /proc/bus ro,nosuid,nodev,noexec,relatime - proc proc rw
521 608 0:183 /fs /proc/fs ro,nosuid,nodev,noexec,relatime - proc proc rw
522 608 0:183 /irq /proc/irq ro,nosuid,nodev,noexec,relatime - proc proc rw
523 608 0:183 /sys /proc/sys ro,nosuid,nodev,noexec,relatime - proc proc rw
524 608 0:183 /sysrq-trigger /proc/sysrq-trigger ro,nosuid,nodev,noexec,relatime - proc proc rw
525 608 0:212 / /proc/acpi ro,relatime - tmpfs tmpfs ro
526 608 0:184 /null /proc/kcore rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755
527 608 0:184 /null /proc/keys rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755
528 608 0:184 /null /proc/timer_list rw,nosuid - tmpfs tmpfs rw,size=65536k,mode=755
529 611 0:213 / /sys/firmware ro,relatime - tmpfs tmpfs ro
""",
)
def test_container_id_detect_from_mountinfo_file(
self, mock_get_container_id_v1, mock_cgroup_file
):
actual = ContainerResourceDetector().detect()
self.assertDictEqual(
actual.attributes.copy(), MockContainerResourceAttributes
)
@patch(
"opentelemetry.resource.detector.container._get_container_id",
return_value=MockContainerResourceAttributes[
ResourceAttributes.CONTAINER_ID
],
)
def test_container_id_as_span_attribute(self, mock_cgroup_file):
tracer_provider, exporter = self.create_tracer_provider(
resource=get_aggregated_resources([ContainerResourceDetector()])
)
tracer = tracer_provider.get_tracer(__name__)
with tracer.start_as_current_span(
"test", kind=trace_api.SpanKind.SERVER
) as _:
pass
span_list = exporter.get_finished_spans()
self.assertEqual(
span_list[0].resource.attributes["container.id"],
MockContainerResourceAttributes[ResourceAttributes.CONTAINER_ID],
)
@patch(
"opentelemetry.resource.detector.container._get_container_id",
return_value=MockContainerResourceAttributes[
ResourceAttributes.CONTAINER_ID
],
)
def test_container_id_detect_from_cgroup(self, mock_get_container_id):
actual = ContainerResourceDetector().detect()
self.assertDictEqual(
actual.attributes.copy(), MockContainerResourceAttributes
)
@patch(
"opentelemetry.resource.detector.container._get_container_id_v1",
return_value=None,
)
@patch(
"opentelemetry.resource.detector.container._get_container_id_v2",
return_value=MockContainerResourceAttributes[
ResourceAttributes.CONTAINER_ID
],
)
def test_container_id_detect_from_mount_info(
self, mock_get_container_id_v1, mock_get_container_id_v2
):
actual = ContainerResourceDetector().detect()
self.assertDictEqual(
actual.attributes.copy(), MockContainerResourceAttributes
)