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khenaidooab1f7bd2019-11-14 14:00:27 -05001// Copyright 2015 The etcd 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
15package client
16
17import (
18 "go.etcd.io/etcd/pkg/srv"
19)
20
21// Discoverer is an interface that wraps the Discover method.
22type Discoverer interface {
23 // Discover looks up the etcd servers for the domain.
24 Discover(domain string, serviceName string) ([]string, error)
25}
26
27type srvDiscover struct{}
28
29// NewSRVDiscover constructs a new Discoverer that uses the stdlib to lookup SRV records.
30func NewSRVDiscover() Discoverer {
31 return &srvDiscover{}
32}
33
34func (d *srvDiscover) Discover(domain string, serviceName string) ([]string, error) {
35 srvs, err := srv.GetClient("etcd-client", domain, serviceName)
36 if err != nil {
37 return nil, err
38 }
39 return srvs.Endpoints, nil
40}