DOP-2986: Include branch name in manifest file

Author: Grace Chong

snooty/main.py

@@ -294,8 +294,9 @@ def __init__(self, zip: zipfile.ZipFile) -> None:
         self.diagnostics: Dict[FileId, List[Diagnostic]] = defaultdict(list)
         self.assets_written: Set[str] = set()
 
-    def on_config(self, config: ProjectConfig) -> None:
+    def on_config(self, config: ProjectConfig, branch: str) -> None:
         self.metadata["project"] = config.name
+        self.metadata["branch"] = branch
 
     def on_diagnostics(self, path: FileId, diagnostics: List[Diagnostic]) -> None:
         if not diagnostics:

snooty/parser.py

@@ -1181,7 +1181,7 @@ def get_giza_category(path: PurePath) -> str:
 
 
 class ProjectBackend:
-    def on_config(self, config: ProjectConfig) -> None:
+    def on_config(self, config: ProjectConfig, branch: str) -> None:
         pass
 
     def on_progress(self, progress: int, total: int, message: str) -> None:
@@ -1484,7 +1484,7 @@ def __init__(
 
         self.asset_dg: "networkx.DiGraph[FileId]" = networkx.DiGraph()
         self.expensive_operation_cache: Cache[FileId] = Cache()
-        self.backend.on_config(self.config)
+        self.backend.on_config(self.config, branch)
 
     def get_full_path(self, fileid: FileId) -> Path:
         return self.config.source_path.joinpath(fileid)