Handle port as json.Number for DNS records in etcd (#8513)

pkg/dns/etcd_dns.go

@@ -41,7 +41,7 @@ const etcdPathSeparator = "/"
 func newCoreDNSMsg(ip string, port string, ttl uint32) ([]byte, error) {
 	return json.Marshal(&SrvRecord{
 		Host:         ip,
-		Port:         port,
+		Port:         json.Number(port),
 		TTL:          ttl,
 		CreationDate: time.Now().UTC(),
 	})

pkg/dns/types.go

@@ -17,6 +17,7 @@
 package dns
 
 import (
+	"encoding/json"
 	"time"
 )
 
@@ -28,13 +29,13 @@ const (
 
 // SrvRecord - represents a DNS service record
 type SrvRecord struct {
-	Host     string `json:"host,omitempty"`
-	Port     string `json:"port,omitempty"`
-	Priority int    `json:"priority,omitempty"`
-	Weight   int    `json:"weight,omitempty"`
-	Text     string `json:"text,omitempty"`
-	Mail     bool   `json:"mail,omitempty"` // Be an MX record. Priority becomes Preference.
-	TTL      uint32 `json:"ttl,omitempty"`
+	Host     string      `json:"host,omitempty"`
+	Port     json.Number `json:"port,omitempty"`
+	Priority int         `json:"priority,omitempty"`
+	Weight   int         `json:"weight,omitempty"`
+	Text     string      `json:"text,omitempty"`
+	Mail     bool        `json:"mail,omitempty"` // Be an MX record. Priority becomes Preference.
+	TTL      uint32      `json:"ttl,omitempty"`
 
 	// Holds info about when the entry was created first.
 	CreationDate time.Time `json:"creationDate"`