github.com/osrg/gobgp@v2.0.0+incompatible/internal/pkg/table/vrf.go (about)

     1  // Copyright (C) 2014-2016 Nippon Telegraph and Telephone Corporation.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //    http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
    12  // implied.
    13  // See the License for the specific language governing permissions and
    14  // limitations under the License.
    15  
    16  package table
    17  
    18  import (
    19  	"github.com/osrg/gobgp/pkg/packet/bgp"
    20  )
    21  
    22  type Vrf struct {
    23  	Name     string
    24  	Id       uint32
    25  	Rd       bgp.RouteDistinguisherInterface
    26  	ImportRt []bgp.ExtendedCommunityInterface
    27  	ExportRt []bgp.ExtendedCommunityInterface
    28  }
    29  
    30  func (v *Vrf) Clone() *Vrf {
    31  	f := func(rt []bgp.ExtendedCommunityInterface) []bgp.ExtendedCommunityInterface {
    32  		l := make([]bgp.ExtendedCommunityInterface, 0, len(rt))
    33  		return append(l, rt...)
    34  	}
    35  	return &Vrf{
    36  		Name:     v.Name,
    37  		Id:       v.Id,
    38  		Rd:       v.Rd,
    39  		ImportRt: f(v.ImportRt),
    40  		ExportRt: f(v.ExportRt),
    41  	}
    42  }
    43  
    44  func isLastTargetUser(vrfs map[string]*Vrf, target bgp.ExtendedCommunityInterface) bool {
    45  	for _, vrf := range vrfs {
    46  		for _, rt := range vrf.ImportRt {
    47  			if target.String() == rt.String() {
    48  				return false
    49  			}
    50  		}
    51  	}
    52  	return true
    53  }