+ # Extract .charm to extract path
+ with ZipFile(charm_path, "r") as zipfile:
+ zipfile.extractall(extract_path)
+ return extract_path + "/metadata.yaml"
+ else:
+ return charm_path + "/metadata.yaml"
+
+ def find_charm_name(self, db_nsr: dict, charm_folder_name: str) -> str:
+ """Get the charm name from metadata.yaml of charm package.
+
+ Args:
+ db_nsr (dict): NS record as a dictionary
+ charm_folder_name (str): charm folder name
+
+ Returns:
+ charm_name (str): charm name
+ """
+ try:
+ if not charm_folder_name:
+ raise LcmException("charm_folder_name should be provided.")
+
+ # Find nsd_package details: path, name
+ revision = db_nsr.get("revision", "")
+
+ # Get the NSD package path
+ if revision:
+ nsd_package_path = db_nsr["nsd-id"] + ":" + str(revision)
+ db_nsd = self.db.get_one("nsds_revisions", {"_id": nsd_package_path})
+
+ else:
+ nsd_package_path = db_nsr["nsd-id"]
+
+ db_nsd = self.db.get_one("nsds", {"_id": nsd_package_path})
+
+ # Get the NSD package name
+ nsd_package_name = db_nsd["_admin"]["storage"]["pkg-dir"]
+
+ # Remove the existing nsd package and sync from FsMongo
+ shutil.rmtree(self.fs.path + nsd_package_path, ignore_errors=True)
+ self.fs.sync(from_path=nsd_package_path)
+
+ # Get the charm path
+ charm_path = self._get_charm_path(
+ nsd_package_path, nsd_package_name, charm_folder_name
+ )
+
+ # Find charm metadata file full path
+ charm_metadata_file = self._get_charm_metadata_file(
+ charm_folder_name, nsd_package_path, nsd_package_name, charm_path
+ )
+
+ # Return charm name
+ return self.get_charm_name(charm_metadata_file)
+
+ except (
+ yaml.YAMLError,
+ IOError,
+ FsException,
+ KeyError,
+ TypeError,
+ FileNotFoundError,
+ BadZipfile,
+ ) as error:
+ self.logger.debug(traceback.format_exc())
+ self.logger.error(f"{error} occured while getting the charm name")
+ raise LcmException(error)