+++ /dev/null
-from threading import Lock
-from libtuer import ThreadFunction, logger
-import urllib.request
-
-from config import spaceApiKey
-
-class SpaceApi:
- def __init__ (self, waker):
- self._state_to_set = None
- self._state_last_set = None
- self._running = True
- self.set_state = ThreadFunction(self._set_state, "Space API")
- self._set_state_lock = Lock()
- waker.register(self.set_state, 10.0) # re-try setting the state every 10 seconds
-
- def stop (self):
- self.set_state.stop()
-
- def _do_request(self, state):
- state_val = 1 if state else 0
- try:
- logger.info("Setting SpaceAPI to %d" % state_val)
- url = "http://spaceapi.hacksaar.de/status.php?action=update&key=%s&status=%d" % (spaceApiKey, state_val)
- response = urllib.request.urlopen(url, timeout=5.0)
- responseText = response.read().decode('utf-8').strip()
- if response.getcode() == 200 and responseText == "UpdateSuccessful": return True
- logger.error("SpaceAPI returned unexpected code %d, content %s" % (response.getcode(), responseText))
- return False
- except urllib.request.URLError as e:
- logger.error("SpaceAPI update returned error: %s" % str(e))
- return False
-
- # set_state is the asynchronous version of _set_state (see __init__)
- def _set_state (self, state = None):
- '''Sets the state, if None: leave state unchanged and re-try if previous attempts failed'''
- if state is not None:
- self._state_to_set = state
- else:
- # always have a local variable because of parallelism
- state = self._state_to_set
-
- if not self._set_state_lock.acquire(False):
- # we don't want many threads to wait here
- # the next status update will fix everything anyways
- pass
- else:
- # got the lock
- try:
- # check if there's something we need to do
- if self._state_last_set == state: return
- # take action!
- success = self._do_request(state)
- # TODO error too often -> log critical to send mails
- if success:
- self._state_last_set = state
- finally:
- self._set_state_lock.release()