minio/pkg/dns/dns.go

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/*
* 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 (
"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 int `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
}