switch_subnet.go raw

   1  // Copyright 2022-2025 The sacloud/iaas-api-go Authors
   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 implied.
  12  // See the License for the specific language governing permissions and
  13  // limitations under the License.
  14  
  15  package accessor
  16  
  17  import (
  18  	"net"
  19  
  20  	"github.com/sacloud/packages-go/cidr"
  21  )
  22  
  23  // AssignedIPAddress スイッチ+ルータの割り当てられたIPアドレスリスト
  24  type AssignedIPAddress interface {
  25  	GetAssignedIPAddressMax() string
  26  	SetAssignedIPAddressMax(v string)
  27  	GetAssignedIPAddressMin() string
  28  	SetAssignedIPAddressMin(v string)
  29  }
  30  
  31  // GetAssignedIPAddresses 最小/最大IPアドレスからIPアドレスリストを算出して返す
  32  func GetAssignedIPAddresses(target AssignedIPAddress) []string {
  33  	base := net.ParseIP(target.GetAssignedIPAddressMin())
  34  	max := net.ParseIP(target.GetAssignedIPAddressMax())
  35  	addresses := []string{base.String()}
  36  
  37  	for {
  38  		current := cidr.Inc(base)
  39  		addresses = append(addresses, current.String())
  40  
  41  		if current.Equal(max) {
  42  			break
  43  		}
  44  		base = current
  45  	}
  46  
  47  	return addresses
  48  }
  49