from util.logger import Logger, logging, logger
#from timeout import timeout
+debug_mode = False
logger = Logger(logfile='observer.log', level=logging.INFO)
+class StepNotReady(Exception):
+ pass
+
def toposort(g, steps):
reverse = {}
class PlanetStackObserver:
sync_steps = ['SyncNetworks','SyncNetworkSlivers','SyncSites','SyncSitePrivileges','SyncSlices','SyncSliceMemberships','SyncSlivers','SyncSliverIps']
- def __init__(self):
- self.manager = OpenStackManager()
- # The Condition object that gets signalled by Feefie events
+ def __init__(self):
+ self.manager = OpenStackManager()
+ # The Condition object that gets signalled by Feefie events
self.load_sync_steps()
- self.event_cond = threading.Condition()
+ self.event_cond = threading.Condition()
self.load_enacted()
- def wait_for_event(self, timeout):
- self.event_cond.acquire()
- self.event_cond.wait(timeout)
- self.event_cond.release()
-
- def wake_up(self):
- logger.info('Wake up routine called. Event cond %r'%self.event_cond)
- self.event_cond.acquire()
- self.event_cond.notify()
- self.event_cond.release()
+ def wait_for_event(self, timeout):
+ self.event_cond.acquire()
+ self.event_cond.wait(timeout)
+ self.event_cond.release()
+
+ def wake_up(self):
+ logger.info('Wake up routine called. Event cond %r'%self.event_cond)
+ self.event_cond.acquire()
+ self.event_cond.notify()
+ self.event_cond.release()
def load_sync_steps(self):
dep_path = Config().pl_dependency_path
try:
dest = provides_dict[m]
except KeyError:
+ pass
# no deps, pass
step_graph[source]=dest
dest = backend_dict[m]
except KeyError:
# no deps, pass
+ pass
step_graph[source]=dest
except KeyError:
dependency_graph = step_graph
self.ordered_steps = toposort(dependency_graph, steps)
-
+ self.last_run_times={}
+ for e in self.ordered_steps:
+ self.last_run_times[e.name]=0
+
+ def check_duration(self):
+ try:
+ if (duration > S.deadline):
+ logger.info('Sync step %s missed deadline, took %.2f seconds'%(S.name,duration))
+ except AttributeError:
+ # S doesn't have a deadline
+ pass
- def run(self):
- if not self.manager.enabled or not self.manager.has_openstack:
- return
+ def update_run_time(self, step):
+ self.last_run_times[step.name]=time.time()
-
- while True:
- try:
- start_time=time.time()
-
- logger.info('Waiting for event')
- tBeforeWait = time.time()
- self.wait_for_event(timeout=300)
+ def check_schedule(self, step):
+ time_since_last_run = time.time() - self.last_run_times[step.name]
+ try:
+ if (time_since_last_run < step.requested_interval):
+ raise StepNotReady
+ except AttributeError:
+ logger.info('Step %s does not have requested_interval set'%step.name)
+ raise StepNotReady
+
+ def check_class_dependency(self, step, failed_steps):
+ for failed_step in failed_steps:
+ if (failed_step in self.dependency_graph[step.name]):
+ raise StepNotReady
+
+ def run(self):
+ if not self.manager.enabled or not self.manager.has_openstack:
+ return
+
+ while True:
+ try:
+ logger.info('Waiting for event')
+ tBeforeWait = time.time()
+ self.wait_for_event(timeout=300)
+ logger.info('Observer woke up')
+
+ # Set of whole steps that failed
+ failed_steps = []
+
+ # Set of individual objects within steps that failed
+ failed_step_objects = []
for S in self.ordered_steps:
+ start_time=time.time()
+
sync_step = S()
- sync_step()
-
- # Enforce 5 minutes between wakeups
- tSleep = 300 - (time.time() - tBeforeWait)
- if tSleep > 0:
- logger.info('Sleeping for %d seconds' % tSleep)
- time.sleep(tSleep)
-
- logger.info('Observer woke up')
- except:
- logger.log_exc("Exception in observer run loop")
- traceback.print_exc()
+ sync_step.dependencies = self.dependencies[sync_step.name]
+ sync_step.debug_mode = debug_mode
+
+ should_run = False
+ try:
+ # Various checks that decide whether
+ # this step runs or not
+ self.check_class_dependency(sync_step, failed_steps) # dont run Slices if Sites failed
+ self.check_schedule(sync_step) # dont run sync_network_routes if time since last run < 1 hour
+ should_run = True
+ except StepNotReady:
+ logging.info('Step not ready: %s'%sync_step.name)
+ failed_steps.add(sync_step)
+ except:
+ failed_steps.add(sync_step)
+
+ if (should_run):
+ try:
+ duration=time.time() - start_time
+
+ # ********* This is the actual sync step
+ failed_objects = sync_step(failed=failed_step_objects)
+
+
+ check_deadline(sync_step, duration)
+ failed_step_objects.extend(failed_objects)
+ self.update_run_time(sync_step)
+ except:
+ failed_steps.add(S)
+ except:
+ logger.log_exc("Exception in observer run loop")
+ traceback.print_exc()
git://git.onelab.eu / plstackapi.git / blobdiff