Python context.ctx函数代码示例

    def test_get_hadoop_ssh_keys(self):
        cluster_dict = {
            'name': 'cluster1',
            'plugin_name': 'mock_plugin',
            'hadoop_version': 'mock_version',
            'default_image_id': 'initial',
            'node_groups': [tu._make_ng_dict("ng1", "f1", ["s1"], 1)]}

        cluster1 = conductor.cluster_create(context.ctx(), cluster_dict)
        (private_key1, public_key1) = c_h.get_hadoop_ssh_keys(cluster1)

        #should store keys for old cluster
        cluster1 = conductor.cluster_get(context.ctx(), cluster1)
        (private_key2, public_key2) = c_h.get_hadoop_ssh_keys(cluster1)

        self.assertEqual(public_key1, public_key2)
        self.assertEqual(private_key1, private_key2)

        #should generate new keys for new cluster
        cluster_dict.update({'name': 'cluster2'})
        cluster2 = conductor.cluster_create(context.ctx(), cluster_dict)
        (private_key3, public_key3) = c_h.get_hadoop_ssh_keys(cluster2)

        self.assertNotEqual(public_key1, public_key3)
        self.assertNotEqual(private_key1, private_key3)

def get_raw_binary(job_binary):
    url = job_binary.url
    if url.startswith("savanna-db://"):
        res = db.get_raw_data(context.ctx(), job_binary)

    if url.startswith(su.SWIFT_INTERNAL_PREFIX):
        res = i_swift.get_raw_data(context.ctx(), job_binary)

    return res

    def test_ip_assignment_use_no_floating(self, cfg, novaclient):

        cfg.CONF.use_floating_ips = False
        nova = _create_nova_mock(novaclient)

        node_groups = [_make_ng_dict("test_group_1", "test_flavor",
                                     ["data node", "test tracker"], 2, 'pool'),
                       _make_ng_dict("test_group_2", "test_flavor",
                                     ["name node", "test tracker"], 1)]

        ctx = context.ctx()
        cluster = _create_cluster_mock(node_groups, ["data node"])
        instances._create_instances(cluster)

        cluster = conductor.cluster_get(ctx, cluster)
        instances_list = instances._get_instances(cluster)

        instances._assign_floating_ips(instances_list)

        nova.floating_ips.create.assert_has_calls(
            [mock.call("pool"),
             mock.call("pool")],
            any_order=False
        )

        self.assertEqual(nova.floating_ips.create.call_count, 2,
                         "Not expected floating IPs number found.")

    def test_crud_operation_create_list_delete_update(self):
        ctx = context.ctx()
        job = self.api.job_create(ctx, SAMPLE_JOB)
        ds_input = self.api.data_source_create(ctx, SAMPLE_DATA_SOURCE)
        SAMPLE_DATA_OUTPUT = copy.copy(SAMPLE_DATA_SOURCE)
        SAMPLE_DATA_OUTPUT['name'] = 'output'
        ds_output = self.api.data_source_create(ctx, SAMPLE_DATA_OUTPUT)

        SAMPLE_JOB_EXECUTION['job_id'] = job['id']
        SAMPLE_JOB_EXECUTION['input_id'] = ds_input['id']
        SAMPLE_JOB_EXECUTION['output_id'] = ds_output['id']

        self.api.job_execution_create(ctx, SAMPLE_JOB_EXECUTION)

        lst = self.api.job_execution_get_all(ctx)
        self.assertEqual(len(lst), 1)

        job_ex_id = lst[0]['id']

        self.assertEqual(lst[0]['progress'], 0.1)
        self.api.job_execution_update(ctx, job_ex_id, {'progress': '0.2'})
        updated_job = self.api.job_execution_get(ctx, job_ex_id)
        self.assertEqual(updated_job['progress'], 0.2)

        self.api.job_execution_destroy(ctx, job_ex_id)

        lst = self.api.job_execution_get_all(ctx)
        self.assertEqual(len(lst), 0)

def _await_networks(cluster, instances):
    if not instances:
        return

    ips_assigned = set()
    while len(ips_assigned) != len(instances):
        if not g.check_cluster_exists(instances[0].node_group.cluster):
            return
        for instance in instances:
            if instance.id not in ips_assigned:
                if networks.init_instances_ips(instance):
                    ips_assigned.add(instance.id)

        context.sleep(1)

    LOG.info("Cluster '%s': all instances have IPs assigned" % cluster.id)

    ctx = context.ctx()
    cluster = conductor.cluster_get(ctx, instances[0].node_group.cluster)
    instances = _get_instances(cluster, ips_assigned)

    with context.ThreadGroup() as tg:
        for instance in instances:
            tg.spawn("wait-for-ssh-%s" % instance.instance_name,
                     _wait_until_accessible, instance)

    LOG.info("Cluster '%s': all instances are accessible" % cluster.id)

    def test_one_node_groups_and_no_affinity_group(self, novaclient):
        node_groups = [_make_ng_dict("test_group", "test_flavor", ["data node", "task tracker"], 2)]

        cluster = _create_cluster_mock(node_groups, [])
        nova = _create_nova_mock(novaclient)
        instances._create_instances(cluster)
        userdata = _generate_user_data_script(cluster)

        nova.servers.create.assert_has_calls(
            [
                mock.call(
                    "test_cluster-test_group-001",
                    "initial",
                    "test_flavor",
                    scheduler_hints=None,
                    userdata=userdata,
                    key_name="user_keypair",
                ),
                mock.call(
                    "test_cluster-test_group-002",
                    "initial",
                    "test_flavor",
                    scheduler_hints=None,
                    userdata=userdata,
                    key_name="user_keypair",
                ),
            ],
            any_order=False,
        )

        ctx = context.ctx()
        cluster_obj = conductor.cluster_get_all(ctx)[0]
        self.assertEqual(len(cluster_obj.node_groups[0].instances), 2)

    def test_remove_instance(self):
        ctx = context.ctx()
        cluster_db_obj = self.api.cluster_create(ctx, SAMPLE_CLUSTER)
        _id = cluster_db_obj["id"]

        ng_id = cluster_db_obj["node_groups"][-1]["id"]
        count = cluster_db_obj["node_groups"][-1]["count"]

        node_group = self._add_instance(ctx, ng_id)
        instance_id = node_group["instances"][-1]["id"]

        cluster_db_obj = self.api.cluster_get(ctx, _id)
        for ng in cluster_db_obj["node_groups"]:
            if ng["id"] != ng_id:
                continue

            self.assertEqual(count + 1, ng["count"])

        self.api.instance_remove(ctx, instance_id)

        cluster_db_obj = self.api.cluster_get(ctx, _id)
        for ng in cluster_db_obj["node_groups"]:
            if ng["id"] != ng_id:
                continue

            self.assertEqual(count, ng["count"])

        with self.assertRaises(RuntimeError):
            self.api.instance_remove(ctx, instance_id)

 def test_cluster_terminate(self, terminate_cluster, get_job_status):
     cfg.CONF.set_override("use_identity_api_v3", True)
     try:
         ctx = context.ctx()
         job = self.api.job_create(ctx, te.SAMPLE_JOB)
         ds = self.api.data_source_create(ctx, te.SAMPLE_DATA_SOURCE)
         c = tc.SAMPLE_CLUSTER.copy()
         c["status"] = "Active"
         c["id"] = "1"
         c["name"] = "1"
         self.api.cluster_create(ctx, c)
         c["id"] = "2"
         c["name"] = "2"
         self.api.cluster_create(ctx, c)
         self._create_job_execution({"end_time": datetime.datetime.now(),
                                     "id": 1,
                                     "cluster_id": "1"},
                                    job, ds, ds)
         self._create_job_execution({"end_time": None,
                                     "id": 2,
                                     "cluster_id": "2"},
                                    job, ds, ds)
         self._create_job_execution({"end_time": None,
                                     "id": 3,
                                     "cluster_id": "2"},
                                    job, ds, ds)
         p.SavannaPeriodicTasks().terminate_unneeded_clusters(None)
         self.assertEqual(terminate_cluster.call_count, 1)
         terminate_cluster.assert_has_calls([mock.call(u'1')])
     finally:
         cfg.CONF.clear_override("use_identity_api_v3")

def _provision_nodes(id, node_group_id_map):
    ctx = context.ctx()
    cluster = conductor.cluster_get(ctx, id)
    plugin = plugin_base.PLUGINS.get_plugin(cluster.plugin_name)

    cluster = conductor.cluster_update(ctx, cluster, {"status": "Scaling"})
    LOG.info(g.format_cluster_status(cluster))
    instances = i.scale_cluster(cluster, node_group_id_map, plugin)

    if instances:
        cluster = conductor.cluster_update(ctx, cluster,
                                           {"status": "Configuring"})
        LOG.info(g.format_cluster_status(cluster))
        try:
            plugin.scale_cluster(cluster, i.get_instances(cluster, instances))
        except Exception as ex:
            LOG.exception("Can't scale cluster '%s' (reason: %s)",
                          cluster.name, ex)
            conductor.cluster_update(ctx, cluster, {"status": "Error"})
            LOG.info(g.format_cluster_status(cluster))
            return

    # cluster is now up and ready
    cluster = conductor.cluster_update(ctx, cluster, {"status": "Active"})
    LOG.info(g.format_cluster_status(cluster))

    def _set_cluster_info(self, cluster):
        mng = u.get_instances(cluster, 'manager')[0]
        nn = u.get_namenode(cluster)
        jt = u.get_jobtracker(cluster)
        oozie = u.get_oozie(cluster)

        #TODO(alazarev) make port configurable (bug #1262895)
        info = {'IDH Manager': {
            'Web UI': 'https://%s:9443' % mng.management_ip
        }}

        if jt:
            #TODO(alazarev) make port configurable (bug #1262895)
            info['MapReduce'] = {
                'Web UI': 'http://%s:50030' % jt.management_ip
            }
            #TODO(alazarev) make port configurable (bug #1262895)
            info['MapReduce']['JobTracker'] = '%s:54311' % jt.hostname()
        if nn:
            #TODO(alazarev) make port configurable (bug #1262895)
            info['HDFS'] = {
                'Web UI': 'http://%s:50070' % nn.management_ip
            }
            #TODO(alazarev) make port configurable (bug #1262895)
            info['HDFS']['NameNode'] = 'hdfs://%s:8020' % nn.hostname()

        if oozie:
            #TODO(alazarev) make port configurable (bug #1262895)
            info['JobFlow'] = {
                'Oozie': 'http://%s:11000' % oozie.management_ip
            }

        ctx = context.ctx()
        conductor.cluster_update(ctx, cluster, {'info': info})

    def test_one_node_groups_and_no_affinity_group(self, novaclient):
        node_groups = [m.NodeGroup("test_group", "test_flavor",
                                   ["data node", "test tracker"], 2)]
        node_groups[0]._username = "root"
        cluster = _create_cluster_mock(node_groups, [])
        nova = _create_nova_mock(novaclient)
        instances._create_instances(cluster)
        userdata = _generate_user_data_script(cluster)

        nova.servers.create.assert_has_calls(
            [mock.call("test_cluster-test_group-001",
                       "initial",
                       "test_flavor",
                       scheduler_hints=None,
                       userdata=userdata,
                       key_name='user_keypair'),
             mock.call("test_cluster-test_group-002",
                       "initial",
                       "test_flavor",
                       scheduler_hints=None,
                       userdata=userdata,
                       key_name='user_keypair')],
            any_order=False)

        session = ctx.ctx().session
        with session.begin():
            self.assertEqual(session.query(m.Instance).count(), 2)

def clean_cluster_from_empty_ng(cluster):
    ctx = context.ctx()
    for ng in cluster.node_groups:
        if ng.count == 0:
            conductor.node_group_remove(ctx, ng)

    return conductor.cluster_get(ctx, cluster)

    def convert(self, config, plugin_name, version, cluster_template_create):
        normalized_config = clusterspec.ClusterSpec(config).normalize()

        #TODO(jspeidel):  can we get the name (first arg) from somewhere?

        node_groups = []
        for ng in normalized_config.node_groups:
            node_group = {
                "name": ng.name,
                "flavor_id": ng.flavor,
                "node_processes": ng.node_processes,
                "count": ng.count
            }
            node_groups.append(node_group)

        cluster_configs = dict()
        for entry in normalized_config.cluster_configs:
            ci = entry.config
            # get the associated service dictionary
            target = entry.config.applicable_target
            service_dict = cluster_configs.get(target, {})
            service_dict[ci.name] = entry.value
            cluster_configs[target] = service_dict

        ctx = context.ctx()
        return cluster_template_create(ctx,
                                       {"name": uuidutils.generate_uuid(),
                                        "plugin_name": plugin_name,
                                        "hadoop_version": version,
                                        "node_groups": node_groups,
                                        "cluster_configs": cluster_configs})

def create_cluster(cluster):
    ctx = context.ctx()
    try:
        # create all instances
        conductor.cluster_update(ctx, cluster, {"status": "Spawning"})
        LOG.info(g.format_cluster_status(cluster))
        _create_instances(cluster)

        # wait for all instances are up and accessible
        cluster = conductor.cluster_update(ctx, cluster, {"status": "Waiting"})
        LOG.info(g.format_cluster_status(cluster))
        cluster = _await_instances(cluster)

        # attach volumes
        volumes.attach(cluster)

        # prepare all instances
        cluster = conductor.cluster_update(ctx, cluster,
                                           {"status": "Preparing"})
        LOG.info(g.format_cluster_status(cluster))

        _configure_instances(cluster)
    except Exception as ex:
        LOG.warn("Can't start cluster '%s' (reason: %s)", cluster.name, ex)
        with excutils.save_and_reraise_exception():
            cluster = conductor.cluster_update(ctx, cluster,
                                               {"status": "Error",
                                                "status_description": str(ex)})
            LOG.info(g.format_cluster_status(cluster))
            _rollback_cluster_creation(cluster, ex)

def _await_networks(instances):
    if not instances:
        return

    ips_assigned = set()
    while len(ips_assigned) != len(instances):
        if not _check_cluster_exists(instances[0].node_group.cluster):
            return
        for instance in instances:
            if instance.id not in ips_assigned:
                if networks.init_instances_ips(instance):
                    ips_assigned.add(instance.id)

        context.sleep(1)

    ctx = context.ctx()
    cluster = conductor.cluster_get(ctx, instances[0].node_group.cluster)
    instances = get_instances(cluster, ips_assigned)

    accessible_instances = set()
    while len(accessible_instances) != len(instances):
        if not _check_cluster_exists(instances[0].node_group.cluster):
            return
        for instance in instances:
            if instance.id not in accessible_instances:
                if _check_if_accessible(instance):
                    accessible_instances.add(instance.id)

        context.sleep(1)