Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 1 | import time |
| 2 | import traceback |
| 3 | import commands |
| 4 | import threading |
| 5 | import json |
| 6 | |
| 7 | from datetime import datetime |
| 8 | from collections import defaultdict |
| 9 | from core.models import * |
| 10 | from django.db.models import F, Q |
Tony Mack | 387a73f | 2013-09-18 07:59:14 -0400 | [diff] [blame] | 11 | #from openstack.manager import OpenStackManager |
| 12 | from openstack.driver import OpenStackDriver |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 13 | from util.logger import Logger, logging, logger |
| 14 | #from timeout import timeout |
Sapan Bhatia | 757e0b6 | 2013-09-02 16:55:00 -0400 | [diff] [blame] | 15 | from planetstack.config import Config |
Sapan Bhatia | 04c94ad | 2013-09-02 18:00:28 -0400 | [diff] [blame] | 16 | from observer.steps import * |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 17 | |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 18 | debug_mode = False |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 19 | |
| 20 | logger = Logger(logfile='observer.log', level=logging.INFO) |
| 21 | |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 22 | class StepNotReady(Exception): |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 23 | pass |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 24 | |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 25 | def toposort(g, steps): |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 26 | reverse = {} |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 27 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 28 | for k,v in g.items(): |
| 29 | for rk in v: |
| 30 | try: |
| 31 | reverse[rk].append(k) |
| 32 | except: |
| 33 | reverse[rk]=k |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 34 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 35 | sources = [] |
| 36 | for k,v in g.items(): |
| 37 | if not reverse.has_key(k): |
| 38 | sources.append(k) |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 39 | |
| 40 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 41 | for k,v in reverse.iteritems(): |
| 42 | if (not v): |
| 43 | sources.append(k) |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 44 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 45 | order = [] |
| 46 | marked = [] |
Sapan Bhatia | 04c94ad | 2013-09-02 18:00:28 -0400 | [diff] [blame] | 47 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 48 | while sources: |
| 49 | n = sources.pop() |
| 50 | try: |
| 51 | for m in g[n]: |
| 52 | if m not in marked: |
| 53 | sources.append(m) |
| 54 | marked.append(m) |
| 55 | except KeyError: |
| 56 | pass |
| 57 | order.append(n) |
| 58 | return order |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 59 | |
| 60 | class PlanetStackObserver: |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 61 | sync_steps = [SyncNetworks,SyncNetworkSlivers,SyncSites,SyncSitePrivileges,SyncSlices,SyncSliceMemberships,SyncSlivers,SyncSliverIps] |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 62 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 63 | def __init__(self): |
| 64 | # The Condition object that gets signalled by Feefie events |
| 65 | self.load_sync_steps() |
| 66 | self.event_cond = threading.Condition() |
Tony Mack | 387a73f | 2013-09-18 07:59:14 -0400 | [diff] [blame] | 67 | self.driver = OpenStackDriver() |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 68 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 69 | def wait_for_event(self, timeout): |
| 70 | self.event_cond.acquire() |
| 71 | self.event_cond.wait(timeout) |
| 72 | self.event_cond.release() |
| 73 | |
| 74 | def wake_up(self): |
| 75 | logger.info('Wake up routine called. Event cond %r'%self.event_cond) |
| 76 | self.event_cond.acquire() |
| 77 | self.event_cond.notify() |
| 78 | self.event_cond.release() |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 79 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 80 | def load_sync_steps(self): |
| 81 | dep_path = Config().observer_backend_dependency_graph |
| 82 | try: |
| 83 | # This contains dependencies between records, not sync steps |
| 84 | self.model_dependency_graph = json.loads(open(dep_path).read()) |
| 85 | except Exception,e: |
| 86 | raise e |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 87 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 88 | try: |
Tony Mack | c12d5ca | 2013-09-24 10:30:39 -0400 | [diff] [blame^] | 89 | backend_path = Config().observer_pl_dependency_graph |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 90 | # This contains dependencies between backend records |
| 91 | self.backend_dependency_graph = json.loads(open(backend_path).read()) |
| 92 | except Exception,e: |
| 93 | # We can work without a backend graph |
| 94 | self.backend_dependency_graph = {} |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 95 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 96 | provides_dict = {} |
| 97 | for s in self.sync_steps: |
| 98 | for m in s.provides: |
| 99 | try: |
| 100 | provides_dict[m.__name__].append(s.__name__) |
| 101 | except KeyError: |
| 102 | provides_dict[m.__name__]=[s.__name__] |
Sapan Bhatia | 04c94ad | 2013-09-02 18:00:28 -0400 | [diff] [blame] | 103 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 104 | |
| 105 | step_graph = {} |
| 106 | for k,v in self.model_dependency_graph.iteritems(): |
| 107 | try: |
| 108 | for source in provides_dict[k]: |
| 109 | for m in v: |
| 110 | try: |
| 111 | for dest in provides_dict[m]: |
| 112 | # no deps, pass |
| 113 | try: |
| 114 | step_graph[source].append(dest) |
| 115 | except: |
| 116 | step_graph[source]=[dest] |
| 117 | except KeyError: |
| 118 | pass |
| 119 | |
| 120 | except KeyError: |
| 121 | pass |
| 122 | # no dependencies, pass |
| 123 | |
| 124 | #import pdb |
| 125 | #pdb.set_trace() |
| 126 | if (self.backend_dependency_graph): |
| 127 | backend_dict = {} |
| 128 | for s in self.sync_steps: |
| 129 | for m in s.serves: |
| 130 | backend_dict[m]=s.__name__ |
| 131 | |
| 132 | for k,v in backend_dependency_graph.iteritems(): |
| 133 | try: |
| 134 | source = backend_dict[k] |
| 135 | for m in v: |
| 136 | try: |
| 137 | dest = backend_dict[m] |
| 138 | except KeyError: |
| 139 | # no deps, pass |
| 140 | pass |
| 141 | step_graph[source]=dest |
| 142 | |
| 143 | except KeyError: |
| 144 | pass |
| 145 | # no dependencies, pass |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 146 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 147 | dependency_graph = step_graph |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 148 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 149 | self.ordered_steps = toposort(dependency_graph, self.sync_steps) |
| 150 | print "Order of steps=",self.ordered_steps |
| 151 | self.load_run_times() |
| 152 | |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 153 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 154 | def check_duration(self): |
| 155 | try: |
| 156 | if (duration > S.deadline): |
| 157 | logger.info('Sync step %s missed deadline, took %.2f seconds'%(S.name,duration)) |
| 158 | except AttributeError: |
| 159 | # S doesn't have a deadline |
| 160 | pass |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 161 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 162 | def update_run_time(self, step): |
| 163 | self.last_run_times[step.name]=time.time() |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 164 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 165 | def check_schedule(self, step): |
| 166 | time_since_last_run = time.time() - self.last_run_times[step.name] |
| 167 | try: |
| 168 | if (time_since_last_run < step.requested_interval): |
| 169 | raise StepNotReady |
| 170 | except AttributeError: |
| 171 | logger.info('Step %s does not have requested_interval set'%step.name) |
| 172 | raise StepNotReady |
| 173 | |
| 174 | def load_run_times(self): |
| 175 | try: |
| 176 | jrun_times = open('/tmp/observer_run_times').read() |
| 177 | self.last_run_times = json.loads(jrun_times) |
| 178 | except: |
| 179 | self.last_run_times={} |
| 180 | for e in self.ordered_steps: |
Tony Mack | c12d5ca | 2013-09-24 10:30:39 -0400 | [diff] [blame^] | 181 | self.last_run_times[e]=0 |
Sapan Bhatia | 36938ca | 2013-09-02 14:35:24 -0400 | [diff] [blame] | 182 | |
| 183 | |
| 184 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 185 | def save_run_times(self): |
| 186 | run_times = json.dumps(self.last_run_times) |
| 187 | open('/tmp/observer_run_times','w').write(run_times) |
Sapan Bhatia | 36938ca | 2013-09-02 14:35:24 -0400 | [diff] [blame] | 188 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 189 | def check_class_dependency(self, step, failed_steps): |
| 190 | for failed_step in failed_steps: |
| 191 | if (failed_step in self.dependency_graph[step.name]): |
| 192 | raise StepNotReady |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 193 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 194 | def run(self): |
| 195 | if not self.driver.enabled or not self.driver.has_openstack: |
| 196 | return |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 197 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 198 | while True: |
| 199 | try: |
| 200 | logger.info('Waiting for event') |
| 201 | tBeforeWait = time.time() |
| 202 | self.wait_for_event(timeout=300) |
| 203 | logger.info('Observer woke up') |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 204 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 205 | # Set of whole steps that failed |
| 206 | failed_steps = [] |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 207 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 208 | # Set of individual objects within steps that failed |
| 209 | failed_step_objects = [] |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 210 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 211 | for S in self.ordered_steps: |
| 212 | start_time=time.time() |
| 213 | |
| 214 | sync_step = S(driver=self.driver) |
| 215 | sync_step.dependencies = self.dependencies[sync_step.name] |
| 216 | sync_step.debug_mode = debug_mode |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 217 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 218 | should_run = False |
| 219 | try: |
| 220 | # Various checks that decide whether |
| 221 | # this step runs or not |
| 222 | self.check_class_dependency(sync_step, failed_steps) # dont run Slices if Sites failed |
| 223 | self.check_schedule(sync_step) # dont run sync_network_routes if time since last run < 1 hour |
| 224 | should_run = True |
| 225 | except StepNotReady: |
| 226 | logging.info('Step not ready: %s'%sync_step.name) |
| 227 | failed_steps.add(sync_step) |
| 228 | except: |
| 229 | failed_steps.add(sync_step) |
Sapan Bhatia | 24836f1 | 2013-08-27 10:16:05 -0400 | [diff] [blame] | 230 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 231 | if (should_run): |
| 232 | try: |
| 233 | duration=time.time() - start_time |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 234 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 235 | # ********* This is the actual sync step |
| 236 | failed_objects = sync_step(failed=failed_step_objects) |
Sapan Bhatia | 13c7f11 | 2013-09-02 14:19:35 -0400 | [diff] [blame] | 237 | |
| 238 | |
Tony Mack | ce79de0 | 2013-09-24 10:12:33 -0400 | [diff] [blame] | 239 | check_deadline(sync_step, duration) |
| 240 | failed_step_objects.extend(failed_objects) |
| 241 | self.update_run_time(sync_step) |
| 242 | except: |
| 243 | failed_steps.add(S) |
| 244 | self.save_run_times() |
| 245 | except: |
| 246 | logger.log_exc("Exception in observer run loop") |
| 247 | traceback.print_exc() |