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Fix the session reconfiguration automatic response

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Previously, it would register 2**x attribute watchers by mistake.  Exponential
growth of threads trying to talk to one BMC is evidently a bad thing.  Fix
this by correctly tracking and cancelling previous attribute watchers.
Additionally, mask a harmless exception brought on by the death of orphaned
pyghmi console objects by having them yell into the endless void rather
than trip on an exception.
This commit is contained in:
Jarrod Johnson 2014-04-04 20:45:48 -04:00
parent 4f2b15dc8e
commit be552cc446
2 changed files with 18 additions and 5 deletions
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15
confluent/consoleserver.py
View File

@ -43,12 +43,19 @@ class _ConsoleHandler(object):
self.connectstate = 'connecting'
self._attribwatcher = None
self._console = None
self.connectionthread = None
eventlet.spawn(self._connect)
def _attribschanged(self, **kwargs):
eventlet.spawn(self._connect)
def _connect(self):
if self.connectionthread:
self.connectionthread.kill()
self.connectionthread = None
self.connectionthread = eventlet.spawn(self._connect_backend)
def _connect_backend(self):
if self._console:
self._console.close()
self._console = None
@ -67,16 +74,16 @@ class _ConsoleHandler(object):
attribstowatch = self._console.configattributes | _genwatchattribs
else:
attribstowatch = _genwatchattribs
self.cfgmgr.watch_attributes((self.node,), attribstowatch,
self._attribschanged)
self._attribwatcher = self.cfgmgr.watch_attributes(
(self.node,), attribstowatch, self._attribschanged)
try:
self._console.connect(self.get_console_output)
except exc.TargetEndpointUnreachable:
self.connectstate = 'unconnected'
self._send_rcpts({'connectstate': self.connectstate})
retrytime = 30 + (30 * random.random())
print "Console was unreachable, waiting %d seconds..." % retrytime
self.reconnect = eventlet.spawn_after(retrytime, self._connect)
if not self.reconnect:
self.reconnect = eventlet.spawn_after(retrytime, self._connect)
return
self._got_connected()

8
plugins/hardwaremanagement/ipmi.py
View File

@ -61,6 +61,12 @@ _configattributes = ('secret.hardwaremanagementuser',
'secret.hardwaremanagementpassphrase',
'secret.ipmikg', 'hardwaremanagement.manager')
def _donothing(data):
# a dummy function to avoid some awkward exceptions from
# zombie pyghmi console objects
pass
class IpmiConsole(conapi.Console):
configattributes = frozenset(_configattributes)
@ -122,7 +128,7 @@ class IpmiConsole(conapi.Console):
def close(self):
if hasattr(self, 'solconnection') and self.solconnection is not None:
# break the circular reference here
self.solconnection.out_handler = None
self.solconnection.out_handler = _donothing
self.solconnection = None
self.broken = True
self.error = "closed"