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snowippool.go
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snowippool.go
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package v1alpha1
import (
"bytes"
"fmt"
"net"
)
const (
// SnowIPPoolKind is the object kind name for SnowIPPool.
SnowIPPoolKind = "SnowIPPool"
)
// SnowIPPoolsSliceEqual compares and returns whether two snow IPPool objects are equal.
func SnowIPPoolsSliceEqual(a, b []IPPool) bool {
if len(a) != len(b) {
return false
}
m := make(map[string]int, len(a))
for _, v := range a {
m[generateKeyForIPPool(v)]++
}
for _, v := range b {
k := generateKeyForIPPool(v)
if _, ok := m[k]; !ok {
return false
}
m[k]--
if m[k] == 0 {
delete(m, k)
}
}
return true
}
func generateKeyForIPPool(pool IPPool) string {
return fmt.Sprintf("%s%s%s%s", pool.IPStart, pool.IPEnd, pool.Subnet, pool.Gateway)
}
func validateSnowIPPool(pool *SnowIPPool) error { //nolint:gocyclo
for index, ipPool := range pool.Spec.Pools {
if len(ipPool.IPStart) == 0 {
return fmt.Errorf("SnowIPPool Pools[%d].IPStart can not be empty", index)
}
ipStart := net.ParseIP(ipPool.IPStart)
if ipStart == nil {
return fmt.Errorf("SnowIPPool Pools[%d].IPStart is invalid", index)
}
if len(ipPool.IPEnd) == 0 {
return fmt.Errorf("SnowIPPool Pools[%d].IPEnd can not be empty", index)
}
ipEnd := net.ParseIP(ipPool.IPEnd)
if ipEnd == nil {
return fmt.Errorf("SnowIPPool Pools[%d].IPEnd is invalid", index)
}
if len(ipPool.Gateway) == 0 {
return fmt.Errorf("SnowIPPool Pools[%d].Gateway can not be empty", index)
}
gateway := net.ParseIP(ipPool.Gateway)
if gateway == nil {
return fmt.Errorf("SnowIPPool Pools[%d].Gateway is invalid", index)
}
if bytes.Compare(ipStart, ipEnd) >= 0 {
return fmt.Errorf("SnowIPPool Pools[%d].IPStart should be smaller than IPEnd", index)
}
if len(ipPool.Subnet) == 0 {
return fmt.Errorf("SnowIPPool Pools[%d].Subnet can not be empty", index)
}
_, ipNet, err := net.ParseCIDR(ipPool.Subnet)
if err != nil {
return fmt.Errorf("SnowIPPool Pools[%d].Subnet is invalid: %v", index, err)
}
if !ipNet.Contains(ipStart) {
return fmt.Errorf("SnowIPPool Pools[%d].IPStart should be within the subnet range %s", index, ipPool.Subnet)
}
if !ipNet.Contains(ipEnd) {
return fmt.Errorf("SnowIPPool Pools[%d].IPEnd should be within the subnet range %s", index, ipPool.Subnet)
}
}
return nil
}