Rename get_*_metadata_filenames functions

Rename repository_lib.get_metadata_filenames() and
get_delegations_filenames() to better match their
functionality and tuf terminology.

Signed-off-by: Teodora Sechkova <tsechkova@vmware.com>

tests/test_repository_lib.py

@@ -201,7 +201,7 @@ def test_import_ed25519_privatekey_from_file(self):
 
 
 
-  def test_get_metadata_filenames(self):
+  def test_get_top_level_metadata_filenames(self):
 
     # Test normal case.
     metadata_directory = os.path.join('metadata/')
@@ -210,7 +210,8 @@ def test_get_metadata_filenames(self):
                  'snapshot.json': metadata_directory + 'snapshot.json',
                  'timestamp.json': metadata_directory + 'timestamp.json'}
 
-    self.assertEqual(filenames, repo_lib.get_metadata_filenames('metadata/'))
+    self.assertEqual(filenames,
+        repo_lib.get_top_level_metadata_filenames('metadata/'))
 
     # If a directory argument is not specified, the current working directory
     # is used.
@@ -219,11 +220,13 @@ def test_get_metadata_filenames(self):
                  'targets.json': os.path.join(metadata_directory, 'targets.json'),
                  'snapshot.json': os.path.join(metadata_directory, 'snapshot.json'),
                  'timestamp.json': os.path.join(metadata_directory, 'timestamp.json')}
-    self.assertEqual(filenames, repo_lib.get_metadata_filenames(metadata_directory))
+    self.assertEqual(filenames,
+        repo_lib.get_top_level_metadata_filenames(metadata_directory))
 
 
     # Test improperly formatted argument.
-    self.assertRaises(securesystemslib.exceptions.FormatError, repo_lib.get_metadata_filenames, 3)
+    self.assertRaises(securesystemslib.exceptions.FormatError,
+        repo_lib.get_top_level_metadata_filenames, 3)
 
 
 
@@ -797,7 +800,7 @@ def test__load_top_level_metadata(self):
     storage_backend = securesystemslib.storage.FilesystemBackend()
     repo_lib.write_metadata_file(signable, root_file, 8, False, storage_backend)
 
-    filenames = repo_lib.get_metadata_filenames(metadata_directory)
+    filenames = repo_lib.get_top_level_metadata_filenames(metadata_directory)
     repository = repo_tool.create_new_repository(repository_directory, repository_name)
     repo_lib._load_top_level_metadata(repository, filenames, repository_name)
 

tuf/repository_lib.py

@@ -812,8 +812,8 @@ def import_ed25519_privatekey_from_file(filepath, password=None):
 
 
 
-def get_delegations_filenames(metadata_directory, consistent_snapshot,
-    storage_backend=None):
+def get_delegated_roles_metadata_filenames(metadata_directory,
+    consistent_snapshot, storage_backend=None):
   """
   Return a dictionary containing all filenames in 'metadata_directory'
   except the top-level roles.
@@ -861,7 +861,7 @@ def get_delegations_filenames(metadata_directory, consistent_snapshot,
 
 
 
-def get_metadata_filenames(metadata_directory):
+def get_top_level_metadata_filenames(metadata_directory):
   """
   <Purpose>
     Return a dictionary containing the filenames of the top-level roles.
@@ -1826,7 +1826,7 @@ def _log_status_of_top_level_roles(targets_directory, metadata_directory,
 
   # The expected full filenames of the top-level roles needed to write them to
   # disk.
-  filenames = get_metadata_filenames(metadata_directory)
+  filenames = get_top_level_metadata_filenames(metadata_directory)
   root_filename = filenames[ROOT_FILENAME]
   targets_filename = filenames[TARGETS_FILENAME]
   snapshot_filename = filenames[SNAPSHOT_FILENAME]

tuf/repository_tool.py

@@ -3090,7 +3090,7 @@ def load_repository(repository_directory, repository_name='default',
   repository = Repository(repository_directory, metadata_directory,
       targets_directory, storage_backend, repository_name)
 
-  filenames = repo_lib.get_metadata_filenames(metadata_directory)
+  filenames = repo_lib.get_top_level_metadata_filenames(metadata_directory)
 
   # The Root file is always available without a version number (a consistent
   # snapshot) attached to the filename.  Store the 'consistent_snapshot' value
@@ -3102,7 +3102,7 @@ def load_repository(repository_directory, repository_name='default',
   repository, consistent_snapshot = repo_lib._load_top_level_metadata(repository,
     filenames, repository_name)
 
-  delegated_roles_filenames = repo_lib.get_delegations_filenames(
+  delegated_roles_filenames = repo_lib.get_delegated_roles_metadata_filenames(
       metadata_directory, consistent_snapshot, storage_backend)
 
   # Load the delegated targets metadata and their fileinfo.