Files
CouchPotatoServer/couchpotato/api.py
Ruud 8ac851555d Can't trigger same api call
Thread never closes
2014-06-01 16:14:53 +02:00

129 lines
3.4 KiB
Python

import json
import threading
import traceback
import urllib
from couchpotato.core.helpers.request import getParams
from couchpotato.core.logger import CPLog
from tornado.gen import coroutine
from tornado.web import RequestHandler, asynchronous
log = CPLog(__name__)
api = {}
api_locks = {}
api_nonblock = {}
api_docs = {}
api_docs_missing = []
# NonBlock API handler
class NonBlockHandler(RequestHandler):
stopper = None
@asynchronous
def get(self, route, *args, **kwargs):
route = route.strip('/')
start, stop = api_nonblock[route]
self.stopper = stop
start(self.onNewMessage, last_id = self.get_argument('last_id', None))
def onNewMessage(self, response):
if self.request.connection.stream.closed():
self.on_connection_close()
return
try:
self.finish(response)
except:
log.debug('Failed doing nonblock request, probably already closed: %s', (traceback.format_exc()))
try: self.finish({'success': False, 'error': 'Failed returning results'})
except: pass
def on_connection_close(self):
if self.stopper:
self.stopper(self.onNewMessage)
self.stopper = None
def addNonBlockApiView(route, func_tuple, docs = None, **kwargs):
api_nonblock[route] = func_tuple
if docs:
api_docs[route[4:] if route[0:4] == 'api.' else route] = docs
else:
api_docs_missing.append(route)
# Blocking API handler
class ApiHandler(RequestHandler):
@coroutine
def get(self, route, *args, **kwargs):
route = route.strip('/')
if not api.get(route):
self.write('API call doesn\'t seem to exist')
return
api_locks[route].acquire()
try:
kwargs = {}
for x in self.request.arguments:
kwargs[x] = urllib.unquote(self.get_argument(x))
# Split array arguments
kwargs = getParams(kwargs)
kwargs['_request'] = self
# Remove t random string
try: del kwargs['t']
except: pass
# Fire api handler(s)
try:
result = api[route](**kwargs)
except:
log.error('Failed doing api request "%s": %s', (route, traceback.format_exc()))
result = {'success': False, 'error': 'Failed returning results'}
# Check JSONP callback
jsonp_callback = self.get_argument('callback_func', default = None)
if jsonp_callback:
self.write(str(jsonp_callback) + '(' + json.dumps(result) + ')')
self.set_header("Content-Type", "text/javascript")
elif isinstance(result, tuple) and result[0] == 'redirect':
self.redirect(result[1])
else:
self.write(result)
except:
log.error('Failed doing api request "%s": %s', (route, traceback.format_exc()))
self.write({'success': False, 'error': 'Failed returning results'})
api_locks[route].release()
post = get
def addApiView(route, func, static = False, docs = None, **kwargs):
if static: func(route)
else:
api[route] = func
api_locks[route] = threading.Lock()
if docs:
api_docs[route[4:] if route[0:4] == 'api.' else route] = docs
else:
api_docs_missing.append(route)