Feature/sap hana client jar clean

buildpack/core/runtime.py

@@ -57,6 +57,44 @@ def is_version_maintained(version):
     return False
 
 
+_SAP_HANA_CLIENT_CDN_PREFIX = "/mx-buildpack/sap-hana-client"
+
+
+def _is_sap_hana_client_enabled():
+    return os.environ.get("INCLUDE_SAP_HANA_CLIENT", "").strip().lower() == "true"
+
+
+def _get_hana_jar_name():
+    import requests as req
+
+    version_url = util.get_blobstore_url(f"{_SAP_HANA_CLIENT_CDN_PREFIX}/version.txt")
+    resp = req.get(version_url, timeout=10)
+    resp.raise_for_status()
+    return f"ngdbc-{resp.text.strip()}.jar"
+
+
+def stage_hana_client(build_dir):
+    if not _is_sap_hana_client_enabled():
+        return
+
+    try:
+        dest = os.path.join(build_dir, "model", "lib", "userlib")
+        util.mkdir_p(dest)
+        jar_name = _get_hana_jar_name()
+        jar_url = util.get_blobstore_url(f"{_SAP_HANA_CLIENT_CDN_PREFIX}/{jar_name}")
+        util.download(jar_url, os.path.join(dest, jar_name))
+        logging.info(
+            "SAP HANA client JAR [%s] staged to [%s]",
+            jar_name,
+            dest,
+        )
+    except Exception:
+        logging.warning(
+            "Failed to stage SAP HANA client JAR, continuing deployment...",
+            exc_info=True,
+        )
+
+
 def stage(buildpack_dir, build_path, cache_path):
     logging.debug("Creating directory structure for Mendix runtime...")
     for name in ["runtimes", "log", "database", "data", "bin"]:

buildpack/stage.py

@@ -217,6 +217,7 @@ def cleanup_dependency_cache(cached_dir, dependency_list):
     metering.stage(BUILDPACK_DIR, BUILD_DIR, CACHE_DIR)
     database.stage(BUILDPACK_DIR, BUILD_DIR)
     runtime.stage(BUILDPACK_DIR, BUILD_DIR, CACHE_DIR)
+    runtime.stage_hana_client(BUILD_DIR)
     logs.stage(BUILDPACK_DIR, BUILD_DIR, CACHE_DIR)
     nginx.stage(BUILDPACK_DIR, BUILD_DIR, CACHE_DIR)
     logging.info("Mendix Cloud Foundry Buildpack staging completed")