Work on demo

examples/db.py

@@ -0,0 +1,35 @@
+import sqlalchemy as sa
+
+
+metadata = sa.Metadata()
+
+
+users = sa.Table(
+    'users', metadata,
+    sa.Column('id', sa.Integer, nullable=False),
+    sa.Column('login', sa.String(256), nullable=False),
+    sa.Column('passwd', sa.String(256), nullable=False),
+    sa.Column('salt', sa.String(256), nullable=False),
+    sa.Column('is_superuser', sa.Boolean, nullable=False,
+              server_default='FALSE'),
+    sa.Column('disabled', sa.Boolean, nullable=False,
+              server_default='FALSE'),
+
+    # indices
+    sa.PrimaryKeyConstraint('id', name='user_pkey'),
+    sa.UniqueConstraint('login', name='user_login_key'),
+)
+
+
+permissions = sa.Table(
+    'permissions', metadata,
+    sa.Column('id', sa.Integer, nullable=False),
+    sa.Column('user_id', sa.Integer, nullable=False),
+    sa.Column('perm_name', sa.String(64), nullable=False),
+
+    # indices
+    sa.PrimaryKeyConstraint('id', name='permission_pkey'),
+    sa.ForeignKeyConstraint(['user_id'], [users.c.id],
+                            name='user_permission_fkey',
+                            ondelete='CASCADE'),
+)

examples/db_auth.py

@@ -3,9 +3,9 @@ import asyncio
 from aiohttp_security.authorization import AbstractAuthorizationPolicy
 
 
-class DictionaryAuthorizationPolicy(AbstractAuthorizationPolicy):
-    def __init__(self, data):
-        self.data = data
+class DBAuthorizationPolicy(AbstractAuthorizationPolicy):
+    def __init__(self, db_pool):
+        self.db_pool = db_pool
 
     @asyncio.coroutine
     def permits(self, identity, permission, context=None):
@@ -18,4 +18,6 @@ class DictionaryAuthorizationPolicy(AbstractAuthorizationPolicy):
 
     @asyncio.coroutine
     def authorized_user_id(self, identity):
+        with (yield from self.db_pool) as conn:
+            conn
         return identity if identity in self.data else None

requirements-dev.txt

@@ -7,3 +7,4 @@ sphinx
 alabaster>=0.6.2
 pep257
 aiohttp_session
+aiopg[sa]