tykayn/oedb-backend
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Use Falcon middleware for common headers

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This commit is contained in:
Yohan Boniface 2016-05-13 21:25:33 +02:00
parent 65dd8fad24
commit bc731e686c
1 changed files with 8 additions and 11 deletions
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19
backend.py
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@ -17,10 +17,12 @@ def db_connect():
user=os.getenv("DB_USER", None))
def standard_headers(resp):
resp.set_header('X-Powered-By', 'OpenEventDatabase')
resp.set_header('Access-Control-Allow-Origin', '*')
resp.set_header('Access-Control-Allow-Headers', 'X-Requested-With')
class HeaderMiddleware:
def process_response(self, req, resp, resource):
resp.set_header('X-Powered-By', 'OpenEventDatabase')
resp.set_header('Access-Control-Allow-Origin', '*')
resp.set_header('Access-Control-Allow-Headers', 'X-Requested-With')
class StatsResource(object):
@ -32,7 +34,6 @@ class StatsResource(object):
cur.close()
db.close()
standard_headers(resp)
resp.body = json.dumps(dict(stat))
resp.status = falcon.HTTP_200
@ -46,7 +47,6 @@ class EventsResource(object):
SELECT format('{"type":"Feature", "id": "'|| events_id::text ||'", "properties": '|| events_tags::text ||', "geometry":'|| st_asgeojson(geom)) ||' }'
FROM events
JOIN geo ON (hash=events_geo)""");
standard_headers(resp)
resp.body = """{"type": "FeatureCollection","features": [
"""+""",
""".join([x[0] for x in cur.fetchall()])+"""
@ -66,7 +66,6 @@ class EventResource(object):
return h
def on_get(self, req, resp, id=None):
standard_headers(resp)
db = db_connect()
cur = db.cursor()
if id is None:
@ -152,7 +151,6 @@ WHERE events_id=%s;""", (id,))
db.close()
def insert_or_update(self, req, resp, id, query):
standard_headers(resp)
# get request body payload (geojson Feature)
body = req.stream.read().decode('utf-8')
@ -198,7 +196,6 @@ WHERE events_id=%s;""", (id,))
self.insert_or_update(req, resp, id, """UPDATE events SET ( events_type, events_what, events_when, events_tags, events_geo) = (%s, %s, tstzrange(%s,%s,%s) , %s, %s) WHERE events_id = %s RETURNING events_id;""")
def on_delete(self, req, resp, id):
standard_headers(resp)
db = db_connect()
cur = db.cursor()
cur.execute("""DELETE FROM events WHERE events_id = %s;""", (id,));
@ -210,8 +207,8 @@ WHERE events_id=%s;""", (id,))
else:
resp.status = falcon.HTTP_404
# falcon.API instances are callable WSGI apps
app = falcon.API()
# Falcon.API instances are callable WSGI apps.
app = falcon.API(middleware=[HeaderMiddleware()])
# Resources are represented by long-lived class instances
events = EventsResource()