def _check_cluster_create(data):
    b.check_plugin_name_exists(data['plugin_name'])
    b.check_plugin_supports_version(data['plugin_name'],
                                    data['hadoop_version'])
    if data.get('cluster_template_id'):
        ct_id = data['cluster_template_id']
        b.check_cluster_template_exists(ct_id)
        if not data.get('node_groups'):
            b.check_node_groups_in_cluster_templates(data['name'],
                                                     data['plugin_name'],
                                                     data['hadoop_version'],
                                                     ct_id)

    if data.get('user_keypair_id'):
        b.check_keypair_exists(data['user_keypair_id'])

    default_image_id = _get_cluster_field(data, 'default_image_id')
    if default_image_id:
        b.check_image_registered(default_image_id)
        b.check_required_image_tags(data['plugin_name'],
                                    data['hadoop_version'],
                                    default_image_id)
    else:
        raise ex.NotFoundException('default_image_id',
                                   _("'%s' field is not found"))

    b.check_all_configurations(data)

    if data.get('anti_affinity'):
        b.check_node_processes(data['plugin_name'], data['hadoop_version'],
                               data['anti_affinity'])

    if data.get('node_groups'):
        proxy_gateway_used = len([ng for ng in data['node_groups'] if
                                  ng.get('is_proxy_gateway', False)]) > 0
        b.check_network_config(data['node_groups'], proxy_gateway_used)
        b.check_cluster_hostnames_lengths(data['name'], data['node_groups'])

    neutron_net_id = _get_cluster_field(data, 'neutron_management_network')
    if neutron_net_id:
        if not CONF.use_neutron:
            raise ex.InvalidReferenceException(
                _("'neutron_management_network' field can't be used "
                  "with 'use_neutron=False'"))
        b.check_network_exists(neutron_net_id)
    else:
        if CONF.use_neutron:
            raise ex.NotFoundException('neutron_management_network',
                                       _("'%s' field is not found"))
dataset/ETHPy150Open openstack/sahara/sahara/service/validations/clusters.py/_check_cluster_create/original