Пример #1
0
def make_observer_chain(ultimate_observer, indent):
    """
    Return our feature observers wrapped our the ultimate_observer
    """
    add_to_fanout(
        ObserverWrapper(JSONObserverWrapper(ultimate_observer,
                                            sort_keys=True,
                                            indent=indent or None),
                        hostname=socket.gethostname()))

    return throttling_wrapper(
        SpecificationObserverWrapper(
            PEP3101FormattingWrapper(
                SystemFilterWrapper(
                    ErrorFormattingWrapper(cf_id_wrapper(get_fanout()))))))
Пример #2
0
def make_observer_chain(ultimate_observer, indent):
    """
    Return our feature observers wrapped our the ultimate_observer
    """
    add_to_fanout(
        ObserverWrapper(
            JSONObserverWrapper(
                ultimate_observer,
                sort_keys=True,
                indent=indent or None),
            hostname=socket.gethostname()))

    return throttling_wrapper(
        SpecificationObserverWrapper(
            PEP3101FormattingWrapper(
                SystemFilterWrapper(
                    ErrorFormattingWrapper(
                        cf_id_wrapper(
                            get_fanout()))))))
Пример #3
0
    def test_global_fanout(self):
        """
        Setting and getting and adding to the global fanout observer.
        """
        obs1, obs2 = [], []
        self.assertEqual(get_fanout(), None)

        # add_to_fanout when there is no fanout
        add_to_fanout(obs1.append)
        fanout = get_fanout()
        self.assertEqual(fanout.subobservers, [obs1.append])

        # add_to_fanout when there is already a fanout
        add_to_fanout(obs2.append)
        self.assertIs(get_fanout(), fanout)
        self.assertEqual(fanout.subobservers, [obs1.append, obs2.append])

        # set_fanout
        set_fanout(None)
        self.assertEqual(get_fanout(), None)
Пример #4
0
    def test_global_fanout(self):
        """
        Setting and getting and adding to the global fanout observer.
        """
        obs1, obs2 = [], []
        self.assertEqual(get_fanout(), None)

        # add_to_fanout when there is no fanout
        add_to_fanout(obs1.append)
        fanout = get_fanout()
        self.assertEqual(fanout.subobservers, [obs1.append])

        # add_to_fanout when there is already a fanout
        add_to_fanout(obs2.append)
        self.assertIs(get_fanout(), fanout)
        self.assertEqual(fanout.subobservers, [obs1.append, obs2.append])

        # set_fanout
        set_fanout(None)
        self.assertEqual(get_fanout(), None)
Пример #5
0
def makeService(config):
    """
    Set up the otter-api service.
    """
    config = dict(config)
    set_config_data(config)

    parent = MultiService()

    region = config_value('region')

    seed_endpoints = [
        clientFromString(reactor, str(host))
        for host in config_value('cassandra.seed_hosts')]

    cassandra_cluster = LoggingCQLClient(
        TimingOutCQLClient(
            reactor,
            RoundRobinCassandraCluster(
                seed_endpoints,
                config_value('cassandra.keyspace'),
                disconnect_on_cancel=True),
            config_value('cassandra.timeout') or 30),
        log.bind(system='otter.silverberg'))

    store = CassScalingGroupCollection(
        cassandra_cluster, reactor, config_value('limits.absolute.maxGroups'))
    admin_store = CassAdmin(cassandra_cluster)

    bobby_url = config_value('bobby_url')
    if bobby_url is not None:
        set_bobby(BobbyClient(bobby_url))

    service_configs = get_service_configs(config)

    authenticator = generate_authenticator(reactor, config['identity'])
    supervisor = SupervisorService(authenticator, region, coiterate,
                                   service_configs)
    supervisor.setServiceParent(parent)

    set_supervisor(supervisor)

    health_checker = HealthChecker(reactor, {
        'store': getattr(store, 'health_check', None),
        'kazoo': store.kazoo_health_check,
        'supervisor': supervisor.health_check
    })

    # Setup cassandra cluster to disconnect when otter shuts down
    if 'cassandra_cluster' in locals():
        parent.addService(FunctionalService(stop=partial(
            call_after_supervisor, cassandra_cluster.disconnect, supervisor)))

    otter = Otter(store, region, health_checker.health_check)
    site = Site(otter.app.resource())
    site.displayTracebacks = False

    api_service = service(str(config_value('port')), site)
    api_service.setServiceParent(parent)

    # Setup admin service
    admin_port = config_value('admin')
    if admin_port:
        admin = OtterAdmin(admin_store)
        admin_site = Site(admin.app.resource())
        admin_site.displayTracebacks = False
        admin_service = service(str(admin_port), admin_site)
        admin_service.setServiceParent(parent)

    # setup cloud feed
    cf_conf = config.get('cloudfeeds', None)
    if cf_conf is not None:
        id_conf = deepcopy(config['identity'])
        id_conf['strategy'] = 'single_tenant'
        add_to_fanout(CloudFeedsObserver(
            reactor=reactor,
            authenticator=generate_authenticator(reactor, id_conf),
            tenant_id=cf_conf['tenant_id'],
            region=region,
            service_configs=service_configs))

    # Setup Kazoo client
    if config_value('zookeeper'):
        threads = config_value('zookeeper.threads') or 10
        disable_logs = config_value('zookeeper.no_logs')
        threadpool = ThreadPool(maxthreads=threads)
        sync_kz_client = KazooClient(
            hosts=config_value('zookeeper.hosts'),
            # Keep trying to connect until the end of time with
            # max interval of 10 minutes
            connection_retry=dict(max_tries=-1, max_delay=600),
            logger=None if disable_logs else TxLogger(log.bind(system='kazoo'))
        )
        kz_client = TxKazooClient(reactor, threadpool, sync_kz_client)
        # Don't timeout. Keep trying to connect forever
        d = kz_client.start(timeout=None)

        def on_client_ready(_):
            dispatcher = get_full_dispatcher(reactor, authenticator, log,
                                             get_service_configs(config),
                                             kz_client, store, supervisor,
                                             cassandra_cluster)
            # Setup scheduler service after starting
            scheduler = setup_scheduler(parent, dispatcher, store, kz_client)
            health_checker.checks['scheduler'] = scheduler.health_check
            otter.scheduler = scheduler
            # Give dispatcher to Otter REST object
            otter.dispatcher = dispatcher
            # Set the client after starting
            # NOTE: There is small amount of time when the start is
            # not finished and the kz_client is not set in which case
            # policy execution and group delete will fail
            store.kz_client = kz_client
            # Setup kazoo to stop when shutting down
            parent.addService(FunctionalService(
                stop=partial(call_after_supervisor,
                             kz_client.stop, supervisor)))

            setup_converger(
                parent, kz_client, dispatcher,
                config_value('converger.interval') or 10,
                config_value('converger.build_timeout') or 3600,
                config_value('converger.limited_retry_iterations') or 10,
                config_value('converger.step_limits') or {})

        d.addCallback(on_client_ready)
        d.addErrback(log.err, 'Could not start TxKazooClient')

    return parent