aiopg with sqlalchemy example

examples/sanic_aiopg_example.py

@@ -1,3 +1,6 @@
+""" To run this example you need additional aiopg package
+
+"""
 import os
 import asyncio
 
@@ -59,4 +62,4 @@ async def handle(request):
 
 if __name__ == '__main__':
     loop.run_until_complete(prepare_db())
-    app.run(host="0.0.0.0", port=8100, workers=3, loop=loop)
+    app.run(host='0.0.0.0', port=8000, loop=loop)

examples/sanic_aiopg_sqlalchemy_example.py

@@ -0,0 +1,73 @@
+""" To run this example you need additional aiopg package
+
+"""
+import os
+import asyncio
+import datetime
+
+import uvloop
+from aiopg.sa import create_engine
+import sqlalchemy as sa
+
+from sanic import Sanic
+from sanic.response import json
+
+asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
+
+database_name = os.environ['DATABASE_NAME']
+database_host = os.environ['DATABASE_HOST']
+database_user = os.environ['DATABASE_USER']
+database_password = os.environ['DATABASE_PASSWORD']
+
+connection = 'postgres://{0}:{1}@{2}/{3}'.format(database_user,
+                                                 database_password,
+                                                 database_host,
+                                                 database_name)
+loop = asyncio.get_event_loop()
+
+
+metadata = sa.MetaData()
+
+polls = sa.Table('sanic_polls', metadata,
+                 sa.Column('id', sa.Integer, primary_key=True),
+                 sa.Column('question', sa.String(50)),
+                 sa.Column("pub_date", sa.DateTime))
+
+
+async def get_engine():
+    return await create_engine(connection)
+
+app = Sanic(name=__name__)
+engine = loop.run_until_complete(get_engine())
+
+
+async def prepare_db():
+    """ Let's add some data
+
+    """
+    async with engine.acquire() as conn:
+        await conn.execute('DROP TABLE IF EXISTS sanic_polls')
+        await conn.execute("""CREATE TABLE sanic_polls (
+                                    id serial primary key,
+                                    question varchar(50),
+                                    pub_date timestamp
+                                );""")
+        for i in range(0, 100):
+            await conn.execute(
+                polls.insert().values(question=i,
+                                      pub_date=datetime.datetime.now())
+                )
+
+
+@app.route("/")
+async def handle(request):
+    async with engine.acquire() as conn:
+        result = []
+        async for row in conn.execute(polls.select()):
+            result.append({"question": row.question, "pub_date": row.pub_date})
+        return json({"polls": result})
+
+
+if __name__ == '__main__':
+    loop.run_until_complete(prepare_db())
+    app.run(host='0.0.0.0', port=8000, loop=loop)