Fix traefik_mesh: version metadata never submitted due to get_version() TypeError (DataDog#23435)

* Fix traefik_mesh get_version() unused url parameter

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Add changelog for traefik_mesh get_version fix

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* Add test_get_version to catch get_version() TypeError bug

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

* Fix changelog filename to match PR DataDog#23435

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

* Use dd_run_check + assert_metadata in test_get_version

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

* Fix ruff 0.11.10 formatting: split long call arguments

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mwdd146980

traefik_mesh/changelog.d/23435.fixed

@@ -0,0 +1 @@
+Fix `get_version()` signature so version metadata is actually submitted.

traefik_mesh/datadog_checks/traefik_mesh/check.py

@@ -84,7 +84,7 @@ def get_mesh_ready_status(self):
 
         return node_status
 
-    def get_version(self, url):
+    def get_version(self):
         """Fetches Traefik Proxy version from the Proxy API"""
 
         version_url = urljoin(self.traefik_proxy_api_endpoint, PROXY_VERSION)

traefik_mesh/tests/test_unit.py

@@ -108,6 +108,37 @@ def test_invalid_controller_service_check(aggregator, mock_http_response):
     aggregator.assert_service_check('traefik_mesh.controller.ready', ServiceCheck.CRITICAL)
 
 
+def test_get_version(datadog_agent, dd_run_check, mock_http_response_per_endpoint):
+    from datadog_checks.dev.http import MockResponse
+
+    instance = {
+        'openmetrics_endpoint': 'http://localhost:8080/metrics',
+        'traefik_proxy_api_endpoint': 'http://localhost:8080',
+        'tags': ['test:traefik_mesh'],
+    }
+    check = TraefikMeshCheck('traefik_mesh', {}, [instance])
+    check.check_id = 'test:123'
+
+    mock_http_response_per_endpoint(
+        {
+            'http://localhost:8080/metrics': [MockResponse(file_path=get_fixture_path('traefik_proxy.txt'))],
+            'http://localhost:8080/api/version': [MockResponse(file_path=get_fixture_path('mesh_proxy_version.json'))],
+        }
+    )
+    dd_run_check(check)
+
+    datadog_agent.assert_metadata(
+        'test:123',
+        {
+            'version.raw': '2.5.7',
+            'version.scheme': 'semver',
+            'version.major': '2',
+            'version.minor': '5',
+            'version.patch': '7',
+        },
+    )
+
+
 def test_submit_version(datadog_agent, dd_run_check, mock_http_response):
     check = TraefikMeshCheck('traefik_mesh', {}, [OM_MOCKED_INSTANCE])
     mock_http_response(file_path=get_fixture_path('traefik_proxy.txt'))