Enable syncing without filelists present

closes #3777

CHANGES/3777.bugfix

@@ -0,0 +1 @@
+Make it possible to sync repositories without filelists.xml or other.xml metadata

pulp_rpm/app/tasks/synchronizing.py

@@ -901,13 +901,17 @@ async def parse_distribution_tree(self):
 
     async def parse_repository_metadata(self, repomd, metadata_results):
         """Parse repository metadata."""
-        needed_metadata = set(PACKAGE_REPODATA) - set(metadata_results.keys())
-
-        if needed_metadata:
+        if "primary" not in metadata_results.keys():
             raise FileNotFoundError(
-                _("XML file(s): {filenames} not found").format(filenames=", ".join(needed_metadata))
+                "Repository doesn't contain required metadata file 'primary.xml'"
             )
 
+        if "filelists" not in metadata_results.keys():
+            log.warn("Repository doesn't contain metadata file 'filelists.xml'")
+
+        if "other" not in metadata_results.keys():
+            log.warn("Repository doesn't contain metadata file 'other.xml'")
+
         await self.parse_distribution_tree()
 
         # modularity-parsing MUST COME BEFORE package-parsing!
@@ -927,9 +931,9 @@ async def parse_repository_metadata(self, repomd, metadata_results):
 
         # **Now** we can successfully parse package-metadata
         await self.parse_packages(
-            metadata_results["primary"],
-            metadata_results["filelists"],
-            metadata_results["other"],
+            metadata_results.get("primary"),
+            metadata_results.get("filelists"),
+            metadata_results.get("other"),
             modulemd_list=modulemd_list,
         )
 
@@ -1168,7 +1172,9 @@ async def parse_packages_components(self, comps_result):
     async def parse_packages(self, primary_xml, filelists_xml, other_xml, modulemd_list=None):
         """Parse packages from the remote repository."""
         parser = cr.RepositoryReader.from_metadata_files(
-            primary_xml.path, filelists_xml.path, other_xml.path
+            primary_xml.path,
+            filelists_xml.path if filelists_xml else None,
+            other_xml.path if other_xml else None,
         )
 
         # skip SRPM if defined

requirements.txt

@@ -1,4 +1,4 @@
-createrepo_c~=1.1.2
+createrepo_c~=1.2
 django_readonly_field~=1.1.1
 jsonschema>=4.6,<5.0
 libcomps>=0.1.20.post1,<0.2