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neutron中的AddressScope.md

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Neutron 之 AddressScope

AddressScope 其实就是用来限定某个 subnetpool 的 ip 版本

测试

neutron address-scope-create --shared test 4
Created a new address_scope:
+------------+--------------------------------------+
| Field      | Value                                |
+------------+--------------------------------------+
| id         | 6ed242e0-13c9-4dfb-a455-bf63436d47c0 |
| ip_version | 4                                    |
| name       | test                                 |
| project_id | d4edcc21aaca452dbc79e7a6056e53bb     |
| shared     | True                                 |
| tenant_id  | d4edcc21aaca452dbc79e7a6056e53bb     |
+------------+--------------------------------------+

extensions

neutron/extensions/address_scope.py

class Address_scope(extensions.ExtensionDescriptor)

class AddressScopePluginBase(object)

Model

neutron/db/models/address_scope.py

class AddressScope(model_base.BASEV2, model_base.HasId, model_base.HasProject)

WSGI 实现

neutron/db/address_scope_db.py

class AddressScopeDbMixin(ext_address_scope.AddressScopePluginBase)

    db_base_plugin_v2.NeutronDbPluginV2.register_dict_extend_funcs(
        attr.NETWORKS, ['_extend_network_dict_address_scope'])

def _extend_network_dict_address_scope(self, network_res, network_db)

扩展 network 的返回属性，将 ipv4_address_scope 和 ipv6_address_scope 加入到其中

def is_address_scope_owned_by_tenant(self, context, id)

检测当前访问的租户是否有权限访问该 address_scope

def get_address_scope(self, context, id, fields=None)

  1. 调用 _get_address_scope 获取 AddressScope 数据库的记录
  2. 调用 _make_address_scope_dict 将 AddressScope 数据库记录转化为易读的形式

def _get_address_scope(self, context, id)

根据 ID 读取 _make_address_scope_dict 数据库记录

def _make_address_scope_dict(self, address_scope, fields=None)

将 AddressScope 数据库记录转化为易读的形式

def get_address_scopes(self, context, filters=None, fields=None, sorts=None, limit=None, marker=None, page_reverse=False)

调用 _get_collection 进行 AddressScope 数据库的批量查询。

def get_address_scopes_count(self, context, filters=None)

获取满足过滤条件 filter 的数据库记录的数量

def delete_address_scope(self, context, id)

  1. 通过调用 AddressScope object 判断该 id 的数据库是否在被使用
  2. 若未被使用则删除数据库记录，被使用则引发异常

def update_address_scope(self, context, id, address_scope)

更新 AddressScope 的数据库记录（不可将 shared 改变为非 shared）

def create_address_scope(self, context, address_scope)

增加一条 AddressScope 的数据库记录

def get_ip_version_for_address_scope(self, context, id)

获取一个 AddressScope 数据库记录的 ip 版本