X-Git-Url: https://git.ralfj.de/saartuer.git/blobdiff_plain/2300f481098a5d326b4a035fe18611a31b872666..986e711c18a3960baa5dda8b9919372e6a387909:/spaceapi.py

diff --git a/spaceapi.py b/spaceapi.py
index dd722b9..181981a 100644
--- a/spaceapi.py
+++ b/spaceapi.py
@@ -1,17 +1,21 @@
 from threading import Lock
 from libtuer import ThreadFunction, logger
-import urllib.request
+import urllib.request, time
 
 from config import spaceApiKey
 
+RETRY_TIME = 60
+HEARTBEAT_TIME = 10*60
+
 class SpaceApi:
 	def __init__ (self, waker):
-		self._state_to_set = None
-		self._state_last_set = None
+		self._local_state = None
+		self._remote_state = None
+		self._last_set_at = 0
 		self._running = True
+		self._fail_count = 0 # number of consecutive fails
 		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
+		waker.register(self.set_state, RETRY_TIME)
 	
 	def stop (self):
 		self.set_state.stop()
@@ -34,24 +38,18 @@ class SpaceApi:
 	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()
+			self._local_state = state
+		# check if there's something we need to do: There's a valid state, and either the state has changed or
+		# we need to refresh our heartbeta)
+		now = time.time()
+		if self._local_state is not None and (self._local_state != self._remote_state or now > self._last_set_at+HEARTBEAT_TIME):
+			# take action!
+			success = self._do_request(self._local_state)
+			if success:
+				self._remote_state = self._local_state
+				self._last_set_at = now
+				self._fail_count = 0
+			else:
+				self._fail_count += 1
+				if self._fail_count in (5, 100):
+					logger.critical("Updating the SpaceAPI failed %d times in a row" % self._fail_count)