from collections import defaultdict
from core.models import *
from django.db.models import F, Q
-from openstack.manager import OpenStackManager
+#from openstack.manager import OpenStackManager
+from openstack.driver import OpenStackDriver
from util.logger import Logger, logging, logger
#from timeout import timeout
+from planetstack.config import Config
+from observer.steps import *
+debug_mode = False
logger = Logger(logfile='observer.log', level=logging.INFO)
-def toposort(g, steps):
+class StepNotReady(Exception):
+ pass
+
+def toposort(g, steps=None):
+ if (not steps):
+ keys = set(g.keys())
+ values = set({})
+ for v in g.values():
+ values=values | set(v)
+
+ steps=list(keys|values)
reverse = {}
for k,v in g.items():
order = []
marked = []
+
while sources:
n = sources.pop()
try:
if (n in steps):
order.append(n)
+ order.reverse()
+ order.extend(set(steps)-set(order))
return order
class PlanetStackObserver:
- sync_steps = ['SyncNetworks','SyncNetworkSlivers','SyncSites','SyncSitePrivileges','SyncSlices','SyncSliceMemberships','SyncSlivers','SyncSliverIps']
+ sync_steps = [SyncNetworks,SyncNetworkSlivers,SyncSites,SyncSitePrivileges,SyncSlices,SyncSliceMemberships,SyncSlivers,SyncSliverIps,SyncExternalRoutes,SyncUsers,GarbageCollector]
- def __init__(self):
- self.manager = OpenStackManager()
- # The Condition object that gets signalled by Feefie events
+ def __init__(self):
+ # The Condition object that gets signalled by Feefie events
+ self.step_lookup = {}
self.load_sync_steps()
- 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()
+ self.event_cond = threading.Condition()
+ self.driver = OpenStackDriver()
+
+ 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
+ dep_path = Config().observer_backend_dependency_graph
try:
# This contains dependencies between records, not sync steps
self.model_dependency_graph = json.loads(open(dep_path).read())
except Exception,e:
raise e
- backend_path = Config().backend_dependency_path
try:
+ backend_path = Config().observer_pl_dependency_graph
# This contains dependencies between backend records
self.backend_dependency_graph = json.loads(open(backend_path).read())
except Exception,e:
- raise e
+ # We can work without a backend graph
+ self.backend_dependency_graph = {}
provides_dict = {}
- for s in sync_steps:
+ for s in self.sync_steps:
+ self.step_lookup[s.__name__] = s
for m in s.provides:
- provides_dict[m]=s.__name__
+ try:
+ provides_dict[m.__name__].append(s.__name__)
+ except KeyError:
+ provides_dict[m.__name__]=[s.__name__]
+
step_graph = {}
- for k,v in model_dependency_graph.iteritems():
+ for k,v in self.model_dependency_graph.iteritems():
try:
- source = provides_dict[k]
- for m in v:
- try:
- dest = provides_dict[m]
- except KeyError:
- # no deps, pass
- step_graph[source]=dest
+ for source in provides_dict[k]:
+ for m in v:
+ try:
+ for dest in provides_dict[m]:
+ # no deps, pass
+ try:
+ step_graph[source].append(dest)
+ except:
+ step_graph[source]=[dest]
+ except KeyError:
+ pass
except KeyError:
pass
# no dependencies, pass
- if (backend_dependency_graph):
+ #import pdb
+ #pdb.set_trace()
+ if (self.backend_dependency_graph):
backend_dict = {}
- for s in sync_steps:
+ for s in self.sync_steps:
for m in s.serves:
backend_dict[m]=s.__name__
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.ordered_steps = toposort(dependency_graph, map(lambda s:s.__name__,self.sync_steps))
+ print "Order of steps=",self.ordered_steps
+ self.load_run_times()
- def run(self):
- if not self.manager.enabled or not self.manager.has_openstack:
- return
+ def check_duration(self, step, duration):
+ try:
+ if (duration > step.deadline):
+ logger.info('Sync step %s missed deadline, took %.2f seconds'%(step.name,duration))
+ except AttributeError:
+ # S doesn't have a deadline
+ pass
+
+ 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 load_run_times(self):
+ try:
+ jrun_times = open('/tmp/observer_run_times').read()
+ self.last_run_times = json.loads(jrun_times)
+ except:
+ self.last_run_times={}
+ for e in self.ordered_steps:
+ self.last_run_times[e]=0
+
+
+
+ def save_run_times(self):
+ run_times = json.dumps(self.last_run_times)
+ open('/tmp/observer_run_times','w').write(run_times)
+
+ def check_class_dependency(self, step, failed_steps):
+ for failed_step in failed_steps:
+ step.dependencies = self.model_dependency_graph.get(step.provides[0].__name__, [])
+ if (failed_step in step.dependencies):
+ raise StepNotReady
+
+ def run(self):
+ if not self.driver.enabled or not self.driver.has_openstack:
+ return
+ while True:
+ try:
+ logger.info('Waiting for event')
+ tBeforeWait = time.time()
+ self.wait_for_event(timeout=30)
+ 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:
- 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()
+ step = self.step_lookup[S]
+ start_time=time.time()
+
+ sync_step = step(driver=self.driver)
+ sync_step.__name__ = step.__name__
+ sync_step.dependencies = []
+ try:
+ mlist = sync_step.provides
+
+ for m in mlist:
+ sync_step.dependencies.extend(self.model_dependency_graph[m.__name__])
+ except KeyError:
+ pass
+ 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.append(sync_step)
+ except:
+ failed_steps.append(sync_step)
+
+ if (should_run):
+ try:
+ duration=time.time() - start_time
+
+ # ********* This is the actual sync step
+ #import pdb
+ #pdb.set_trace()
+ failed_objects = sync_step(failed=failed_step_objects)
+
+
+ self.check_duration(sync_step, duration)
+ if failed_objects:
+ failed_step_objects.extend(failed_objects)
+ self.update_run_time(sync_step)
+ except:
+ raise
+ failed_steps.append(S)
+ self.save_run_times()
+ except:
+ logger.log_exc("Exception in observer run loop")
+ traceback.print_exc()
git://git.onelab.eu / plstackapi.git / blobdiff