Add a configurable timer for minion return retries

When a minion return cannot be processed in a timely manner, a
SaltReqTimeoutError is raised. However, the default wait time before the
minion will retry sending the return data was not being passed, so it
would wait a full 60 seconds.

This reduces that timeout to (by default) a maximum of 4 seconds, and
randomizes it to prevent a retry flood as you scale up the number of
minions.
This commit is contained in:
Erik Johnson 2015-09-21 14:26:28 -05:00
parent b22286476e
commit 453b883820

View file

@ -21,6 +21,7 @@ import time
import traceback
import types
from random import randint, shuffle
from salt.config import DEFAULT_MINION_OPTS
from salt.ext.six.moves import range # pylint: disable=import-error,redefined-builtin
from stat import S_IMODE
@ -901,6 +902,30 @@ class Minion(MinionBase):
self.connected = True
return opts['master']
def _return_retry_timer(self):
'''
Based on the minion configuration, either return a randomized timer or
just return the value of the return_retry_timer.
'''
msg = 'Minion return retry timer set to {0} seconds'
if self.opts['return_retry_random']:
try:
random_retry = randint(1, self.opts['return_retry_timer'])
except ValueError:
# Catch wiseguys using negative integers here
log.error(
'Invalid value ({0}) for return_retry_timer, must be a '
'positive integer'.format(self.opts['return_retry_timer'])
)
log.debug(msg.format(DEFAULT_MINION_OPTS['return_retry_timer']))
return DEFAULT_MINION_OPTS['return_retry_timer']
else:
log.debug(msg.format(random_retry) + ' (randomized)')
return random_retry
else:
log.debug(msg.format(self.opts['return_retry_timer']))
return self.opts['return_retry_timer']
def _prep_mod_opts(self):
'''
Returns a copy of the opts with key bits stripped out
@ -1253,7 +1278,10 @@ class Minion(MinionBase):
ret['metadata'] = data['metadata']
else:
log.warning('The metadata parameter must be a dictionary. Ignoring.')
minion_instance._return_pub(ret)
minion_instance._return_pub(
ret,
timeout=minion_instance._return_retry_timer()
)
if data['ret']:
if 'ret_config' in data:
ret['ret_config'] = data['ret_config']
@ -1310,7 +1338,10 @@ class Minion(MinionBase):
ret['fun_args'] = data['arg']
if 'metadata' in data:
ret['metadata'] = data['metadata']
minion_instance._return_pub(ret)
minion_instance._return_pub(
ret,
timeout=minion_instance._return_retry_timer()
)
if data['ret']:
if 'ret_config' in data:
ret['ret_config'] = data['ret_config']
@ -2316,7 +2347,9 @@ class Syndic(Minion):
pretag=tagify(self.opts['id'], base='syndic'),
)
for jid in self.jids:
self._return_pub(self.jids[jid], '_syndic_return')
self._return_pub(self.jids[jid],
'_syndic_return',
timeout=self._return_retry_timer())
self._reset_event_aggregation()
def destroy(self):