get rhel release graph url from environment variable

Author: jasinner

README.md

@@ -30,6 +30,7 @@ export AUTH_ENDPOINT="https://auth.stage.redhat.com/auth/realms/EmployeeIDP/prot
 Product Mapping:
 ```bash
 export PRODDEFS_URL="https://prodsec.pages.example.com/product-definitions/products.json"
+export RHEL_RELEASE_GRAPH_URL="https://gitlab.cee.example.com/api/v4/projects/prodsec%2Frhel-release-graph"
 export SSL_CERT_FILE=/etc/pki/tls/certs/ca-bundle.crt
 ```
 

src/trustshell/rhel_releases.py

@@ -39,9 +39,10 @@ def __repr__(self) -> str:
 class RHELReleaseData:
     """Parser and manager for RHEL release data from GitLab repository or local files."""
 
-    # Default GitLab repository configuration
-    DEFAULT_REPO_BASE = (
-        "https://gitlab.cee.redhat.com/api/v4/projects/prodsec%2Frhel-release-graph"
+    # GitLab repository configuration (can be overridden with RHEL_RELEASE_GRAPH_URL env var)
+    RHEL_RELEASE_GRAPH_BASE = os.environ.get(
+        "RHEL_RELEASE_GRAPH_URL",
+        "https://gitlab.cee.redhat.com/api/v4/projects/prodsec%2Frhel-release-graph",
     )
     DEFAULT_FILE_PATH = "rhel9-releases.yml"
     DEFAULT_BRANCH = "main"
@@ -117,9 +118,7 @@ def _fetch_from_gitlab(self) -> Optional[Dict[str, Any]]:
             # Build GitLab API URL for the file
             # URL format: /projects/:id/repository/files/:file_path/raw?ref=:branch
             encoded_file_path = self.file_path.replace("/", "%2F")
-            file_url = (
-                f"{self.DEFAULT_REPO_BASE}/repository/files/{encoded_file_path}/raw"
-            )
+            file_url = f"{self.RHEL_RELEASE_GRAPH_BASE}/repository/files/{encoded_file_path}/raw"
 
             # Load cached ETag if available
             cached_etag = self._load_cached_etag(etag_file)