reporead: bring back batched_bulk_create()

For packages with filelists with > 80,000 items, we were starting to see
some serious memory issues in reporead. This was both on the statement
generation side in Python as well as on the database side. Break the
updates into chunks of 10,000 when we encounter packages with tons of
files to control things in a bit.

Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 19 insertions, 1 deletions

diff --git a/devel/management/commands/reporead.py b/devel/management/commands/reporead.py
index 2b565cf..248eb62 100644
--- a/devel/management/commands/reporead.py
+++ b/devel/management/commands/reporead.py
@@ -260,6 +260,24 @@ def delete_pkg_files(dbpkg):
     cursor.execute('DELETE FROM package_files WHERE pkg_id = %s', [dbpkg.id])
 
 
+def batched_bulk_create(model, all_objects):
+    cutoff = 10000
+    length = len(all_objects)
+    if length < cutoff:
+        return model.objects.bulk_create(all_objects)
+
+    def chunks():
+        offset = 0
+        while offset < length:
+            yield all_objects[offset:offset + cutoff]
+            offset += cutoff
+
+    for items in chunks():
+        ret = model.objects.bulk_create(items)
+
+    return ret
+
+
 def populate_files(dbpkg, repopkg, force=False):
     if not force:
         if not pkg_same_version(repopkg, dbpkg):
@@ -294,7 +312,7 @@ def populate_files(dbpkg, repopkg, force=False):
                     directory=dirname,
                     filename=filename)
             pkg_files.append(pkgfile)
-        PackageFile.objects.bulk_create(pkg_files)
+        batched_bulk_create(PackageFile, pkg_files)
         dbpkg.files_last_update = now()
         dbpkg.save()