oedb-backend/backend.py
2016-04-20 07:48:58 +02:00

71 lines
2.6 KiB
Python

# backend.py
# openeventdatabase
import falcon
import psycopg2
import uuid
import json
class StatsResource(object):
def on_get(self, req, resp):
db = psycopg2.connect("dbname=oedb")
cur = db.cursor()
cur.execute("SELECT count(*) as events_count, max(createdate) as last_created, max(lastupdate) as last_updated from events;")
stat = cur.fetchone()
cur.close()
db.close()
resp.body = """{"events_count": %s, "last_created": "%s", "last_updated": "%s"}""" % (stat[0], stat[1],stat[2])
resp.set_header('X-Powered-By', 'OpenEventDatabase')
resp.set_header('Access-Control-Allow-Origin', '*')
resp.set_header('Access-Control-Allow-Headers', 'X-Requested-With')
resp.status = falcon.HTTP_200
class EventResource(object):
def on_get(self, req, resp):
db = psycopg2.connect("dbname=oedb")
cur = db.cursor()
print(req.params['id'])
# get data to display activity graphs
cur.execute("""select * from events where events_id='%s';""", req.params['id'])
e = cur.fetchone(e['events_tags'])
resp.body = e
resp.status = falcon.HTTP_200
resp.set_header('X-Powered-By', 'OpenEventDatabase')
resp.set_header('Access-Control-Allow-Origin', '*')
resp.set_header('Access-Control-Allow-Headers', 'X-Requested-With')
db.close()
def on_post(self, req, resp):
# get request body payload (json)
body = req.stream.read().decode('utf-8')
j=json.loads(body)
# connect to db and insert
db = psycopg2.connect("dbname=oedb")
cur = db.cursor()
cur.execute("""INSERT INTO events ( events_type, events_what, events_when, events_tags) VALUES (%s, %s, %s, %s) RETURNING events_id;""",(j['type'],j['what'],j['when'], body))
# get newly created event id
e = cur.fetchone()
db.commit()
cur.close()
db.close()
# send back to client
resp.body = """{"id":"%s"}""" % (e[0])
resp.set_header('X-Powered-By', 'OpenEventDatabase')
resp.set_header('Access-Control-Allow-Origin', '*')
resp.set_header('Access-Control-Allow-Headers', 'X-Requested-With')
resp.status = falcon.HTTP_200
# falcon.API instances are callable WSGI apps
app = falcon.API()
# Resources are represented by long-lived class instances
event = EventResource()
stats = StatsResource()
# things will handle all requests to the matching URL path
app.add_route('/event', event) # handle single event requests
app.add_route('/stats', stats)