Add a script for generating schema migrations. Should be run from the root quay directory.

data/migrations/env.py

@@ -1,4 +1,7 @@
 from __future__ import with_statement
+
+import os
+
 from alembic import context
 from sqlalchemy import engine_from_config, pool
 from logging.config import fileConfig
@@ -12,8 +15,12 @@ from util.morecollections import AttrDict
 
 # this is the Alembic Config object, which provides
 # access to the values within the .ini file in use.
+db_uri = unquote(app.config['DB_URI'])
+if 'GENMIGRATE' in os.environ:
+    db_uri = 'mysql+pymysql://root:password@192.168.59.103/genschema'
+
 config = context.config
-config.set_main_option('sqlalchemy.url', unquote(app.config['DB_URI']))
+config.set_main_option('sqlalchemy.url', db_uri)
 
 # Interpret the config file for Python logging.
 # This line sets up loggers basically.
@@ -57,7 +64,7 @@ def run_migrations_online():
 
     """
 
-    if isinstance(db.obj, SqliteDatabase):
+    if isinstance(db.obj, SqliteDatabase) and not 'GENMIGRATE' in os.environ:
         print ('Skipping Sqlite migration!')
         return