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core: Grow autoconnect delays by a configurable factor whenever connections fail

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Closes #348.
This commit is contained in:
James Lu 2017-03-11 00:21:30 -08:00
parent 9e50c5e69a
commit 2028cab04c
3 changed files with 30 additions and 0 deletions
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21
classes.py
View File

@ -65,6 +65,9 @@ class Irc(utils.DeprecatedAttributesObject):
self.pingTimer = None
# Sets the multiplier for autoconnect delay (grows with time).
self.autoconnect_active_multiplier = 1
self.initVars()
if world.testing:
@ -310,6 +313,7 @@ class Irc(utils.DeprecatedAttributesObject):
log.info('(%s) Starting ping schedulers....', self.name)
self.schedulePing()
log.info('(%s) Server ready; listening for data.', self.name)
self.autoconnect_active_multiplier = 1 # Reset any extra autoconnect delays
self.run()
else: # Configuration error :(
log.error('(%s) A configuration error was encountered '
@ -327,8 +331,22 @@ class Irc(utils.DeprecatedAttributesObject):
# If autoconnect is enabled, loop back to the start. Otherwise,
# return and stop.
autoconnect = self.serverdata.get('autoconnect')
# Sets the autoconnect growth multiplier (e.g. a value of 2 multiplies the autoconnect
# time by 2 on every failure, etc.)
autoconnect_multiplier = self.serverdata.get('autoconnect_multiplier', 2)
autoconnect_max = self.serverdata.get('autoconnect_max', 1800)
# These values must at least be 1.
autoconnect_multiplier = max(autoconnect_multiplier, 1)
autoconnect_max = max(autoconnect_max, 1)
log.debug('(%s) Autoconnect delay set to %s seconds.', self.name, autoconnect)
if autoconnect is not None and autoconnect >= 1:
log.debug('(%s) Multiplying autoconnect delay %s by %s.', self.name, autoconnect, self.autoconnect_active_multiplier)
autoconnect *= self.autoconnect_active_multiplier
# Add a cap on the max. autoconnect delay, so that we don't go on forever...
autoconnect = min(autoconnect, autoconnect_max)
log.info('(%s) Going to auto-reconnect in %s seconds.', self.name, autoconnect)
# Continue when either self.aborted is set or the autoconnect time passes.
# Compared to time.sleep(), this allows us to stop connections quicker if we
@ -336,6 +354,9 @@ class Irc(utils.DeprecatedAttributesObject):
self.aborted.clear()
self.aborted.wait(autoconnect)
# Store in the local state what the autoconnect multiplier currently is.
self.autoconnect_active_multiplier *= autoconnect_multiplier
if self not in world.networkobjects.values():
log.debug('Stopping stale connect loop for old connection %r', self.name)
return

2
coremods/control.py
View File

@ -93,9 +93,11 @@ def _rehash():
log.debug('rehash: removing connection to %r (removed from config).', network)
remove_network(ircobj)
else:
# XXX: we should really just add abstraction to Irc to update config settings...
ircobj.conf = new_conf
ircobj.serverdata = new_conf['servers'][network]
ircobj.botdata = new_conf['bot']
ircobj.autoconnect_cache = 1
# Clear the IRC object's channel loggers and replace them with
# new ones by re-running logSetup().

7
example-conf.yml
View File

@ -151,6 +151,13 @@ servers:
# disable autoconnect entirely.
autoconnect: 5
# Optional autoconnect settings:
# Defines whether we should multiply the autoconnect delay by a certain value every time
# a connection fails. This defaults to 2 if not set (30 secs becomes 60 secs, 120 secs, etc.)
#autoconnect_multiplier: 2
# Defines what the maximum autoconnect time will be (defaults to 1800 secs).
#autoconnect_max: 1800
# Sets the ping frequency in seconds (i.e. how long we should wait between
# sending pings to our uplink). When more than two consecutive pings are missed,
# PyLink will disconnect with a ping timeout. This defaults to 90 if not set.