|
|
|
/*
|
|
|
|
* MinIO Cloud Storage, (C) 2018 MinIO, Inc.
|
|
|
|
*
|
|
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
* you may not use this file except in compliance with the License.
|
|
|
|
* You may obtain a copy of the License at
|
|
|
|
*
|
|
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
*
|
|
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
* See the License for the specific language governing permissions and
|
|
|
|
* limitations under the License.
|
|
|
|
*/
|
|
|
|
|
|
|
|
package dns
|
|
|
|
|
|
|
|
import (
|
|
|
|
"encoding/json"
|
|
|
|
"time"
|
|
|
|
)
|
|
|
|
|
|
|
|
const (
|
|
|
|
defaultTTL = 30
|
|
|
|
defaultPrefixPath = "/skydns"
|
|
|
|
defaultContextTimeout = 5 * time.Minute
|
|
|
|
)
|
|
|
|
|
|
|
|
// SrvRecord - represents a DNS service record
|
|
|
|
type SrvRecord struct {
|
|
|
|
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"`
|
|
|
|
|
|
|
|
// When a SRV record with a "Host: IP-address" is added, we synthesize
|
|
|
|
// a srv.Target domain name. Normally we convert the full Key where
|
|
|
|
// the record lives to a DNS name and use this as the srv.Target. When
|
|
|
|
// TargetStrip > 0 we strip the left most TargetStrip labels from the
|
|
|
|
// DNS name.
|
|
|
|
TargetStrip int `json:"targetstrip,omitempty"`
|
|
|
|
|
|
|
|
// Group is used to group (or *not* to group) different services
|
|
|
|
// together. Services with an identical Group are returned in
|
|
|
|
// the same answer.
|
|
|
|
Group string `json:"group,omitempty"`
|
|
|
|
|
|
|
|
// Key carries the original key used during Put().
|
|
|
|
Key string `json:"-"`
|
|
|
|
}
|
|
|
|
|
|
|
|
// Config - represents dns put, get interface. This interface can be
|
|
|
|
// used to implement various backends as needed.
|
|
|
|
type Config interface {
|
|
|
|
Put(key string) error
|
|
|
|
List() ([]SrvRecord, error)
|
|
|
|
Get(key string) ([]SrvRecord, error)
|
|
|
|
Delete(key string) error
|
|
|
|
DeleteRecord(record SrvRecord) error
|
|
|
|
}
|