X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=planetstack%2Fopenstack_observer%2Fevent_loop.py;h=cc0611c4c92129baca9804938398c7223767f8fa;hb=7328d3430b45136308f614d009010559b632faaa;hp=12e88abb0632387a6d4e6902759347473b17e2ef;hpb=1dc35b42a628c1a987117033139646c1e7b745a0;p=plstackapi.git diff --git a/planetstack/openstack_observer/event_loop.py b/planetstack/openstack_observer/event_loop.py index 12e88ab..cc0611c 100644 --- a/planetstack/openstack_observer/event_loop.py +++ b/planetstack/openstack_observer/event_loop.py @@ -6,11 +6,13 @@ import traceback import commands import threading import json +import pdb from datetime import datetime from collections import defaultdict from core.models import * from django.db.models import F, Q +from django.db import connection #from openstack.manager import OpenStackManager from openstack.driver import OpenStackDriver from util.logger import Logger, logging, logger @@ -20,9 +22,21 @@ from observer.steps import * from syncstep import SyncStep from toposort import toposort from observer.error_mapper import * +from openstack_observer.openstacksyncstep import OpenStackSyncStep + debug_mode = False +class bcolors: + HEADER = '\033[95m' + OKBLUE = '\033[94m' + OKGREEN = '\033[92m' + WARNING = '\033[93m' + FAIL = '\033[91m' + ENDC = '\033[0m' + BOLD = '\033[1m' + UNDERLINE = '\033[4m' + logger = Logger(level=logging.INFO) class StepNotReady(Exception): @@ -31,11 +45,27 @@ class StepNotReady(Exception): class NoOpDriver: def __init__(self): self.enabled = True + self.dependency_graph = None + +STEP_STATUS_WORKING=1 +STEP_STATUS_OK=2 +STEP_STATUS_KO=3 + +def invert_graph(g): + ig = {} + for k,v in g.items(): + for v0 in v: + try: + ig[v0].append(k) + except: + ig=[k] + return ig class PlanetStackObserver: - #sync_steps = [SyncNetworks,SyncNetworkSlivers,SyncSites,SyncSitePrivileges,SyncSlices,SyncSliceMemberships,SyncSlivers,SyncSliverIps,SyncExternalRoutes,SyncUsers,SyncRoles,SyncNodes,SyncImages,GarbageCollector] + #sync_steps = [SyncNetworks,SyncNetworkSlivers,SyncSites,SyncSitePrivilege,SyncSlices,SyncSliceMemberships,SyncSlivers,SyncSliverIps,SyncExternalRoutes,SyncUsers,SyncRoles,SyncNodes,SyncImages,GarbageCollector] sync_steps = [] + def __init__(self): # The Condition object that gets signalled by Feefie events self.step_lookup = {} @@ -78,7 +108,7 @@ class PlanetStackObserver: # provides field (this eliminates the abstract base classes # since they don't have a provides) - if inspect.isclass(c) and issubclass(c, SyncStep) and hasattr(c,"provides") and (c not in self.sync_steps): + if inspect.isclass(c) and (issubclass(c, SyncStep) or issubclass(c,OpenStackSyncStep)) and hasattr(c,"provides") and (c not in self.sync_steps): self.sync_steps.append(c) logger.info('loaded sync steps: %s' % ",".join([x.__name__ for x in self.sync_steps])) # print 'loaded sync steps: %s' % ",".join([x.__name__ for x in self.sync_steps]) @@ -154,9 +184,10 @@ class PlanetStackObserver: pass # no dependencies, pass - dependency_graph = step_graph + self.dependency_graph = step_graph + self.deletion_dependency_graph = invert_graph(step_graph) - self.ordered_steps = toposort(dependency_graph, map(lambda s:s.__name__,self.sync_steps)) + self.ordered_steps = toposort(self.dependency_graph, map(lambda s:s.__name__,self.sync_steps)) print "Order of steps=",self.ordered_steps self.load_run_times() @@ -204,7 +235,6 @@ class PlanetStackObserver: self.last_deletion_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) @@ -220,23 +250,53 @@ class PlanetStackObserver: if (failed_step in step.dependencies): raise StepNotReady - def sync(self, ordered_steps, error_mapper, deletion): - # Set of whole steps that failed - failed_steps = [] + def sync(self, S, deletion): + try: + step = self.step_lookup[S] + start_time=time.time() - # Set of individual objects within steps that failed - failed_step_objects = set() + logger.info("Starting to work on step %s" % step.__name__) + + dependency_graph = self.dependency_graph if not deletion else self.deletion_dependency_graph - for S in ordered_steps: - step = self.step_lookup[S] - start_time=time.time() - - sync_step = step(driver=self.driver,error_map=error_mapper) + # Wait for step dependencies to be met + try: + deps = self.dependency_graph[S] + has_deps = True + except KeyError: + has_deps = False + + go = False + + if (has_deps): + for d in deps: + if d==step.__name__: + logger.info(" step %s self-wait skipped" % step.__name__) + go = True + continue + + cond = self.step_conditions[d] + cond.acquire() + if (self.step_status[d] is STEP_STATUS_WORKING): + logger.info(" step %s wait on dep %s" % (step.__name__, d)) + cond.wait() + cond.release() + go = go or self.step_status[d] == STEP_STATUS_OK + else: + go = True + + if (not go): + # SMBAKER: sync_step was not defined here, so I changed + # this from 'sync_step' to 'step'. Verify. + self.failed_steps.append(step) + my_status = STEP_STATUS_KO + else: + sync_step = step(driver=self.driver,error_map=self.error_mapper) 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: @@ -247,16 +307,18 @@ class PlanetStackObserver: 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_class_dependency(sync_step, self.failed_steps) # dont run Slices if Sites failed self.check_schedule(sync_step, deletion) # 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) + logger.info('Step not ready: %s'%sync_step.__name__) + self.failed_steps.append(sync_step) + my_status = STEP_STATUS_KO except Exception,e: - logging.error('%r',e) + logger.error('%r' % e) logger.log_exc("sync step failed: %r. Deletion: %r"%(sync_step,deletion)) - failed_steps.append(sync_step) + self.failed_steps.append(sync_step) + my_status = STEP_STATUS_KO if (should_run): try: @@ -264,31 +326,70 @@ class PlanetStackObserver: logger.info('Executing step %s' % sync_step.__name__) - # ********* This is the actual sync step - #import pdb - #pdb.set_trace() - failed_objects = sync_step(failed=list(failed_step_objects), deletion=deletion) - + failed_objects = sync_step(failed=list(self.failed_step_objects), deletion=deletion) self.check_duration(sync_step, duration) + if failed_objects: - failed_step_objects.update(failed_objects) + self.failed_step_objects.update(failed_objects) + logger.info("Step %r succeeded" % step) + my_status = STEP_STATUS_OK self.update_run_time(sync_step,deletion) except Exception,e: - logging.error('Model step failed. This seems like a misconfiguration or bug: %r. This error will not be relayed to the user!',e) + logger.error('Model step %r failed. This seems like a misconfiguration or bug: %r. This error will not be relayed to the user!' % (step, e)) logger.log_exc(e) - failed_steps.append(S) + self.failed_steps.append(S) + my_status = STEP_STATUS_KO + else: + logger.info("Step %r succeeded due to non-run" % step) + my_status = STEP_STATUS_OK + + try: + my_cond = self.step_conditions[S] + my_cond.acquire() + self.step_status[S]=my_status + my_cond.notify_all() + my_cond.release() + except KeyError,e: + logger.info('Step %r is a leaf' % step) + pass + finally: + connection.close() + def run(self): if not self.driver.enabled: return + if (self.driver_kind=="openstack") and (not self.driver.has_openstack): return while True: try: error_map_file = getattr(Config(), "error_map_path", "/opt/planetstack/error_map.txt") - error_mapper = ErrorMapper(error_map_file) + self.error_mapper = ErrorMapper(error_map_file) + + # Set of whole steps that failed + self.failed_steps = [] + + # Set of individual objects within steps that failed + self.failed_step_objects = set() + + # Set up conditions and step status + # This is needed for steps to run in parallel + # while obeying dependencies. + + providers = set() + for v in self.dependency_graph.values(): + if (v): + providers.update(v) + + self.step_conditions = {} + self.step_status = {} + for p in list(providers): + self.step_conditions[p] = threading.Condition() + self.step_status[p] = STEP_STATUS_WORKING + logger.info('Waiting for event') tBeforeWait = time.time() @@ -299,10 +400,13 @@ class PlanetStackObserver: for deletion in [False,True]: threads = [] logger.info('Deletion=%r...'%deletion) - ordered_steps = self.ordered_steps if not deletion else reversed(self.ordered_steps) - thread = threading.Thread(target=self.sync, args=(ordered_steps,error_mapper,deletion)) - logger.info('Deletion=%r...'%deletion) - threads.append(thread) + schedule = self.ordered_steps if not deletion else reversed(self.ordered_steps) + + for S in schedule: + thread = threading.Thread(target=self.sync, args=(S, deletion)) + + logger.info('Deletion=%r...'%deletion) + threads.append(thread) # Start threads for t in threads: @@ -314,6 +418,6 @@ class PlanetStackObserver: self.save_run_times() except Exception, e: - logging.error('Core error. This seems like a misconfiguration or bug: %r. This error will not be relayed to the user!',e) + logger.error('Core error. This seems like a misconfiguration or bug: %r. This error will not be relayed to the user!' % e) logger.log_exc("Exception in observer run loop") traceback.print_exc()