Change blob upload ints into bigints

data/database.py

@@ -1004,12 +1004,12 @@ class RepositoryAuthorizedEmail(BaseModel):
 class BlobUpload(BaseModel):
   repository = ForeignKeyField(Repository)
   uuid = CharField(index=True, unique=True)
-  byte_count = IntegerField(default=0)
+  byte_count = BigIntegerField(default=0)
   sha_state = ResumableSHA256Field(null=True, default=resumablehashlib.sha256)
   location = ForeignKeyField(ImageStorageLocation)
   storage_metadata = JSONField(null=True, default={})
   chunk_count = IntegerField(default=0)
-  uncompressed_byte_count = IntegerField(null=True)
+  uncompressed_byte_count = BigIntegerField(null=True)
   created = DateTimeField(default=datetime.now, index=True)
   piece_sha_state = ResumableSHA1Field(null=True)
   piece_hashes = Base64BinaryField(null=True)

data/migrations/versions/b8ae68ad3e52_change_blobupload_fields_to_bigintegers_.py

@@ -0,0 +1,29 @@
+"""Change BlobUpload fields to BigIntegers to allow layers > 8GB
+
+Revision ID: b8ae68ad3e52
+Revises: e2894a3a3c19
+Create Date: 2017-02-27 11:26:49.182349
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'b8ae68ad3e52'
+down_revision = 'e2894a3a3c19'
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+def upgrade(tables):
+    # Delete old entries in the blobupload table. This is generally a good idea for cleanup and
+    # also makes the alter column calls much faster.
+    conn = op.get_bind()
+    conn.execute("Delete from blobupload where created <= '2017-02-01'", ())
+
+    op.alter_column('blobupload', 'byte_count', existing_type=sa.Integer(), type_=sa.BigInteger())
+    op.alter_column('blobupload', 'uncompressed_byte_count', existing_type=sa.Integer(), type_=sa.BigInteger())
+
+
+def downgrade(tables):
+    op.alter_column('blobupload', 'byte_count', existing_type=sa.BigInteger(), type_=sa.Integer())
+    op.alter_column('blobupload', 'uncompressed_byte_count', existing_type=sa.BigInteger(), type_=sa.Integer())