Azure resource detectors

CHANGELOG.md

@@ -12,6 +12,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `opentelemetry-instrumentation-asgi` Fix UnboundLocalError local variable 'start' referenced before assignment 
   ([#1889](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1889))
 
+### Added
+
+- `opentelemetry-resource-detector-azure` Add resource detectors for Azure App Service and VM
+  ([#1901](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1901))
+
 ## Version 1.19.0/0.40b0 (2023-07-13)
 - `opentelemetry-instrumentation-asgi` Add `http.server.request.size` metric
   ([#1867](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1867))

resource/opentelemetry-resource-detector-azure/LICENSE

@@ -0,0 +1,21 @@
+Copyright (c) Microsoft Corporation.
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

resource/opentelemetry-resource-detector-azure/README.rst

@@ -0,0 +1,82 @@
+OpenTelemetry Resource detectors for Azure
+==========================================================
+
+|pypi|
+
+.. |pypi| image:: https://badge.fury.io/py/opentelemetry-resource-detector-azure.svg
+   :target: https://pypi.org/project/opentelemetry-resource-detector-azure/
+
+
+The Azure App Service Resource Detector sets the following Resource Attributes:
+ * `service.name` set to the value of the WEBSITE_SITE_NAME environment variable.
+ * `cloud.provider` set to the value of the "azure".
+ * `cloud.platform` set to the value of the "azure_app_service".
+ * `cloud.resource_id` set using the WEBSITE_RESOURCE_GROUP WEBSITE_OWNER_NAME and WEBSITE_SITE_NAME environment variables.
+ * `cloud.region` set to the value of the REGION_NAME environment variable.
+ * `deployment.environment` set to the value of the WEBSITE_SLOT_NAME environment variable.
+ * `host.id` set to the value of the WEBSITE_HOSTNAME environment variable.
+ * `service.instance.id` set to the value of the WEBSITE_INSTANCE_ID environment variable.
+ * `azure.app.service.stamp` set to the value of the WEBSITE_HOME_STAMPNAME environment variable.
+
+The Azure VM Resource Detector sets the following Resource Attributes:
+ * `azure.vm.scaleset.name`
+ * `azure.vm.sku`
+ * `cloud.platform`
+ * `cloud.provider`
+ * `cloud.region`
+ * `cloud.resource_id`
+ * `host.id`
+ * `host.name`
+ * `host.type`
+ * `os.type`
+ * `os.version`
+ * `service.instance.id`
+
+ For more information, see the Semantic Conventions for Cloud Resource Attributes.
+
+Installation
+------------
+
+::
+
+    pip install opentelemetry-resource-detector-azure
+
+---------------------------
+
+Usage example for `opentelemetry-resource-detector-azure`
+
+.. code-block:: python
+
+    from opentelemetry import trace
+    from opentelemetry.sdk.trace import TracerProvider
+    from opentelemetry.resource.detector.azure.app_service import (
+        AzureAppServiceResourceDetector,
+        AzureVMResourceDetector,
+    )
+    from opentelemetry.resource.detector.azure.vm import (
+        AzureVMResourceDetector,
+    )
+    from opentelemetry.sdk.resources import get_aggregated_resources
+
+
+    trace.set_tracer_provider(
+        TracerProvider(
+            resource=get_aggregated_resources(
+                [
+                    AzureAppServiceResourceDetector(),
+                    AzureVMResourceDetector(),
+                ]
+            ),
+        )
+    )
+
+You can also enable the Resource Detectors by adding `azure_app_service` and/or `azure_vm` to the `OTEL_EXPERIMENTAL_RESOURCE_DETECTORS` environment variable:
+
+`export OTEL_EXPERIMENTAL_RESOURCE_DETECTORS=azure_app_service,azure_vm`
+
+References
+----------
+
+* `OpenTelemetry Project <https://opentelemetry.io/>`_
+* `Resource Detector Docs <https://opentelemetry.io/docs/specs/otel/resource/sdk/#detecting-resource-information-from-the-environment>`
+* `Cloud Semantic Conventions <https://opentelemetry.io/docs/specs/otel/resource/semantic_conventions/cloud/>`_

resource/opentelemetry-resource-detector-azure/pyproject.toml

@@ -0,0 +1,51 @@
+[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 = "[email protected]" },
+]
+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 ~= 1.19",
+]
+
+[project.optional-dependencies]
+test = []
+
+[project.entry-points.opentelemetry_resource_detector]
+azure_app_service = "opentelemetry.resource.detector.azure.app_service:AzureAppServiceResourceDetector"
+azure_vm = "opentelemetry.resource.detector.azure.vm:AzureVMResourceDetector"
+
+[project.urls]
+Homepage = "https://github.com/open-telemetry/opentelemetry-python-contrib/tree/main/resource/opentelemetry-resource-detector-azure"
+
+[tool.hatch.version]
+path = "src/opentelemetry/resource/detector/azure/version.py"
+
+[tool.hatch.build.targets.sdist]
+include = [
+  "/src",
+  "/tests",
+]
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/opentelemetry"]

resource/opentelemetry-resource-detector-azure/src/opentelemetry/resource/detector/azure/app_service.py

@@ -0,0 +1,63 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+from os import environ
+
+from opentelemetry.sdk.resources import ResourceDetector, Resource
+from opentelemetry.semconv.resource import ResourceAttributes, CloudPlatformValues, CloudProviderValues
+
+_AZURE_APP_SERVICE_STAMP_RESOURCE_ATTRIBUTE = "azure.app.service.stamp"
+# TODO: Remove once this resource attribute is no longer missing from SDK
+_CLOUD_RESOURCE_ID_RESOURCE_ATTRIBUTE = "cloud.resource_id"
+_REGION_NAME = "REGION_NAME"
+_WEBSITE_HOME_STAMPNAME = "WEBSITE_HOME_STAMPNAME"
+_WEBSITE_HOSTNAME = "WEBSITE_HOSTNAME"
+_WEBSITE_INSTANCE_ID = "WEBSITE_INSTANCE_ID"
+_WEBSITE_OWNER_NAME = "WEBSITE_OWNER_NAME"
+_WEBSITE_RESOURCE_GROUP = "WEBSITE_RESOURCE_GROUP"
+_WEBSITE_SITE_NAME = "WEBSITE_SITE_NAME"
+_WEBSITE_SLOT_NAME = "WEBSITE_SLOT_NAME"
+
+
+_APP_SERVICE_ATTRIBUTE_ENV_VARS = {
+    ResourceAttributes.CLOUD_REGION: _REGION_NAME,
+    ResourceAttributes.DEPLOYMENT_ENVIRONMENT: _WEBSITE_SLOT_NAME,
+    ResourceAttributes.HOST_ID: _WEBSITE_HOSTNAME,
+    ResourceAttributes.SERVICE_INSTANCE_ID: _WEBSITE_INSTANCE_ID,
+    _AZURE_APP_SERVICE_STAMP_RESOURCE_ATTRIBUTE: _WEBSITE_HOME_STAMPNAME,
+}
+
+class AzureAppServiceResourceDetector(ResourceDetector):
+    def detect(self) -> Resource:
+        attributes = {}
+        website_site_name = environ.get(_WEBSITE_SITE_NAME)
+        if website_site_name:
+            attributes[ResourceAttributes.SERVICE_NAME] = website_site_name
+            attributes[ResourceAttributes.CLOUD_PROVIDER] = CloudProviderValues.AZURE.value
+            attributes[ResourceAttributes.CLOUD_PLATFORM] = CloudPlatformValues.AZURE_APP_SERVICE.value
+
+            azure_resource_uri = _get_azure_resource_uri(website_site_name)
+            if azure_resource_uri:
+                attributes[_CLOUD_RESOURCE_ID_RESOURCE_ATTRIBUTE] = azure_resource_uri
+            for (key, env_var) in _APP_SERVICE_ATTRIBUTE_ENV_VARS.items():
+                value = environ.get(env_var)
+                if value:
+                    attributes[key] = value
+
+        return Resource(attributes)
+
+def _get_azure_resource_uri(website_site_name):
+    website_resource_group = environ.get(_WEBSITE_RESOURCE_GROUP)
+    website_owner_name = environ.get(_WEBSITE_OWNER_NAME)
+
+    subscription_id = website_owner_name
+    if website_owner_name and '+' in website_owner_name:
+        subscription_id = website_owner_name[0:website_owner_name.index('+')]
+
+    if not (website_resource_group and subscription_id):
+        return None
+
+    return "/subscriptions/%s/resourceGroups/%s/providers/Microsoft.Web/sites/%s" % (
+        subscription_id,
+        website_resource_group,
+        website_site_name,
+    )

resource/opentelemetry-resource-detector-azure/src/opentelemetry/resource/detector/azure/version.py

@@ -0,0 +1,4 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+__version__ = "0.41b0.dev"

resource/opentelemetry-resource-detector-azure/src/opentelemetry/resource/detector/azure/vm.py

@@ -0,0 +1,85 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+from json import loads
+from logging import getLogger
+from os import environ
+from urllib.request import Request, urlopen
+from urllib.error import URLError
+
+from opentelemetry.sdk.resources import ResourceDetector, Resource
+from opentelemetry.semconv.resource import ResourceAttributes, CloudPlatformValues, CloudProviderValues
+
+
+# TODO: Remove when cloud resource id is no longer missing in Resource Attributes
+_CLOUD_RESOURCE_ID_RESOURCE_ATTRIBUTE = "cloud.resource_id"
+_AZURE_VM_METADATA_ENDPOINT = "http://169.254.169.254/metadata/instance/compute?api-version=2021-12-13&format=json"
+_AZURE_VM_SCALE_SET_NAME_ATTRIBUTE = "azure.vm.scaleset.name"
+_AZURE_VM_SKU_ATTRIBUTE = "azure.vm.sku"
+_logger = getLogger(__name__)
+
+EXPECTED_AZURE_AMS_ATTRIBUTES = [
+    _AZURE_VM_SCALE_SET_NAME_ATTRIBUTE,
+    _AZURE_VM_SKU_ATTRIBUTE,
+    ResourceAttributes.CLOUD_PLATFORM,
+    ResourceAttributes.CLOUD_PROVIDER,
+    ResourceAttributes.CLOUD_REGION,
+    _CLOUD_RESOURCE_ID_RESOURCE_ATTRIBUTE,
+    ResourceAttributes.HOST_ID,
+    ResourceAttributes.HOST_NAME,
+    ResourceAttributes.HOST_TYPE,
+    ResourceAttributes.OS_TYPE,
+    ResourceAttributes.OS_VERSION,
+    ResourceAttributes.SERVICE_INSTANCE_ID,
+]
+
+class AzureVMResourceDetector(ResourceDetector):
+    # pylint: disable=no-self-use
+    def detect(self) -> "Resource":
+        attributes = {}
+        metadata_json = _AzureVMMetadataServiceRequestor().get_azure_vm_metadata()
+        if not metadata_json:
+            return Resource(attributes)
+        for attribute_key in EXPECTED_AZURE_AMS_ATTRIBUTES:
+            attributes[attribute_key] = _AzureVMMetadataServiceRequestor().get_attribute_from_metadata(metadata_json, attribute_key)
+        return Resource(attributes)
+
+class _AzureVMMetadataServiceRequestor:
+    def get_azure_vm_metadata(self):
+        request = Request(_AZURE_VM_METADATA_ENDPOINT)
+        request.add_header("Metadata", "True")
+        try:
+            response = urlopen(request).read()
+            return loads(response)
+        except URLError:
+            # Not on Azure VM
+            return None
+        except Exception as e:
+            _logger.exception("Failed to receive Azure VM metadata: %s", e)
+            return None
+
+    def get_attribute_from_metadata(self, metadata_json, attribute_key):
+        ams_value = ""
+        if attribute_key == _AZURE_VM_SCALE_SET_NAME_ATTRIBUTE:
+            ams_value = metadata_json["vmScaleSetName"]
+        elif attribute_key == _AZURE_VM_SKU_ATTRIBUTE:
+            ams_value = metadata_json["sku"]
+        elif attribute_key == ResourceAttributes.CLOUD_PLATFORM:
+            ams_value = CloudPlatformValues.AZURE_VM.value
+        elif attribute_key == ResourceAttributes.CLOUD_PROVIDER:
+            ams_value = CloudProviderValues.AZURE.value
+        elif attribute_key == ResourceAttributes.CLOUD_REGION:
+            ams_value = metadata_json["location"]
+        elif attribute_key == _CLOUD_RESOURCE_ID_RESOURCE_ATTRIBUTE:
+            ams_value = metadata_json["resourceId"]
+        elif attribute_key == ResourceAttributes.HOST_ID or \
+            attribute_key == ResourceAttributes.SERVICE_INSTANCE_ID:
+            ams_value = metadata_json["vmId"]
+        elif attribute_key == ResourceAttributes.HOST_NAME:
+            ams_value = metadata_json["name"]
+        elif attribute_key == ResourceAttributes.HOST_TYPE:
+            ams_value = metadata_json["vmSize"]
+        elif attribute_key == ResourceAttributes.OS_TYPE:
+            ams_value = metadata_json["osType"]
+        elif attribute_key == ResourceAttributes.OS_VERSION:
+            ams_value = metadata_json["version"]
+        return ams_value

resource/opentelemetry-resource-detector-azure/tests/__init__.py

@@ -0,0 +1,2 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.