Python NetworkHelper.get_snatpool_member_use_count方法代碼示例

# 需要導入模塊: from f5_openstack_agent.lbaasv2.drivers.bigip.network_helper import NetworkHelper [as 別名]
# 或者: from f5_openstack_agent.lbaasv2.drivers.bigip.network_helper.NetworkHelper import get_snatpool_member_use_count [as 別名]

#.........這裏部分代碼省略.........
        for i in range(self.driver.conf.f5_snat_addresses_per_subnet):
            index_snat_name = snat_name + "_" + str(i)
            if self.l2_service.is_common_network(network):
                tmos_snat_name = '/Common/' + index_snat_name
            else:
                tmos_snat_name = index_snat_name

            if self.l3_binding:
                try:
                    snat_xlate = self.snat_translation_manager.load(
                        bigip, name=index_snat_name, partition=partition)
                    self.l3_binding.unbind_address(
                        subnet_id=subnet['id'], ip_address=snat_xlate.address)
                except HTTPError as err:
                    LOG.error("Load SNAT xlate failed %s" % err.message)

            # Remove translation address from tenant snat pool
            # This seems strange that name and partition are tenant_id
            # but that is what the v1 code was doing.
            # The v1 code was also comparing basename in some cases
            # which seems dangerous because the folder may be in play?
            #
            # Revised (jl): It appears that v2 SNATs are created with a
            # name, not tenant_id, so we need to load SNAT by name.
            LOG.debug('Remove translation address from tenant SNAT pool')
            try:
                snatpool = self.snatpool_manager.load(bigip,
                                                      index_snat_name,
                                                      partition)

                snatpool.members = [
                    member for member in snatpool.members
                    if os.path.basename(member) != tmos_snat_name
                ]

                # Delete snat pool if empty (no members)
                # In LBaaSv1 the snat.remove_from_pool() method did this if
                # there was only one member and it matched the one we were
                # deleting making this call basically useless, but the
                # code above makes this still necessary and probably what the
                # original authors intended anyway since there is logging here
                # but not in the snat.py module from LBaaSv1
                LOG.debug('Check if snat pool is empty')
                if not snatpool.members:
                    LOG.debug('Snat pool is empty - delete snatpool')
                    try:
                        snatpool.delete()
                    except HTTPError as err:
                        LOG.error("Delete SNAT pool failed %s" % err.message)
                else:
                    LOG.debug('Snat pool is not empty - update snatpool')
                    try:
                        snatpool.update()
                    except HTTPError as err:
                        LOG.error("Update SNAT pool failed %s" % err.message)
            except HTTPError as err:
                LOG.error("Failed to load SNAT pool %s" % err.message)

            # Check if subnet in use by any tenants/snatpools. If in use,
            # add subnet to hints list of subnets in use.
            self._remove_assured_tenant_snat_subnet(bigip, tenant_id, subnet)
            LOG.debug(
                'Check cache for subnet %s in use by other tenant' %
                subnet['id'])
            in_use_count = 0
            for loop_tenant_id in bigip.assured_tenant_snat_subnets:
                tenant_snat_subnets = \
                    bigip.assured_tenant_snat_subnets[loop_tenant_id]
                if subnet['id'] in tenant_snat_subnets:
                    LOG.debug(
                        'Subnet %s in use (tenant %s)' %
                        (subnet['id'], loop_tenant_id))
                    in_use_count += 1

            if in_use_count:
                in_use_subnets.add(subnet['id'])
            else:
                LOG.debug('Check subnet in use by any tenant')
                member_use_count = \
                    self.network_helper.get_snatpool_member_use_count(
                        bigip, subnet['id'])
                if member_use_count:
                    LOG.debug('Subnet in use - do not delete')
                    in_use_subnets.add(subnet['id'])
                else:
                    LOG.debug('Subnet not in use - delete')

            # Check if trans addr in use by any snatpool.  If not in use,
            # okay to delete associated neutron port.
            LOG.debug('Check trans addr %s in use.' % tmos_snat_name)
            in_use_count = \
                self.network_helper.get_snatpool_member_use_count(
                    bigip, tmos_snat_name)
            if not in_use_count:
                LOG.debug('Trans addr not in use - delete')
                deleted_names.add(index_snat_name)
            else:
                LOG.debug('Trans addr in use - do not delete')

        return deleted_names, in_use_subnets