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add backoff for resending for messages still not removed from msgs table

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This commit is contained in:
Eric House 2012-11-07 08:05:45 -08:00
parent 45d0b2dbc8
commit 83754d626e
1 changed files with 9 additions and 1 deletions
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10
xwords4/relay/scripts/gcm_loop.py
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@ -70,6 +70,12 @@ def notifyGCM( devids ):
else:
print 'no errors'
def shouldSend(val):
pow = 1
while pow < val:
pow *= 2
return pow == val
# given a list of msgid, devid lists, figure out which messages should
# be sent/resent now and mark them as sent. Backoff is based on
# msgids: if the only messages a device has pending have been seen
@ -79,7 +85,9 @@ def targetsAfterBackoff( msgs, sent ):
for row in msgs:
msgid = row[0]
if not msgid in sent:
sent[ msgid ] = True
sent[msgid] = 0
sent[msgid] += 1
if shouldSend( sent[msgid] ):
targets.append( row[1] )
return targets