/
digitaloceanProvider.go
250 lines (211 loc) · 6.19 KB
/
digitaloceanProvider.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
package digitalocean
import (
"context"
"encoding/json"
"fmt"
"net/http"
"github.com/StackExchange/dnscontrol/models"
"github.com/StackExchange/dnscontrol/providers"
"github.com/StackExchange/dnscontrol/providers/diff"
"github.com/miekg/dns/dnsutil"
"github.com/pkg/errors"
"github.com/digitalocean/godo"
"golang.org/x/oauth2"
)
/*
Digitalocean API DNS provider:
Info required in `creds.json`:
- token
*/
// DoApi is the handle for operations.
type DoApi struct {
client *godo.Client
}
var defaultNameServerNames = []string{
"ns1.digitalocean.com",
"ns2.digitalocean.com",
"ns3.digitalocean.com",
}
// NewDo creates a DO-specific DNS provider.
func NewDo(m map[string]string, metadata json.RawMessage) (providers.DNSServiceProvider, error) {
if m["token"] == "" {
return nil, errors.Errorf("no Digitalocean token provided")
}
ctx := context.Background()
oauthClient := oauth2.NewClient(
ctx,
oauth2.StaticTokenSource(&oauth2.Token{AccessToken: m["token"]}),
)
client := godo.NewClient(oauthClient)
api := &DoApi{client: client}
// Get a domain to validate the token
_, resp, err := api.client.Domains.List(ctx, &godo.ListOptions{PerPage: 1})
if err != nil {
return nil, err
}
if resp.StatusCode != http.StatusOK {
return nil, errors.Errorf("token for digitalocean is not valid")
}
return api, nil
}
var features = providers.DocumentationNotes{
providers.DocCreateDomains: providers.Can(),
providers.DocOfficiallySupported: providers.Cannot(),
providers.CanUseSRV: providers.Can(),
}
func init() {
providers.RegisterDomainServiceProviderType("DIGITALOCEAN", NewDo, features)
}
// EnsureDomainExists returns an error if domain doesn't exist.
func (api *DoApi) EnsureDomainExists(domain string) error {
ctx := context.Background()
_, resp, err := api.client.Domains.Get(ctx, domain)
if resp.StatusCode == http.StatusNotFound {
_, _, err := api.client.Domains.Create(ctx, &godo.DomainCreateRequest{
Name: domain,
IPAddress: "",
})
return err
}
return err
}
// GetNameservers returns the nameservers for domain.
func (api *DoApi) GetNameservers(domain string) ([]*models.Nameserver, error) {
return models.StringsToNameservers(defaultNameServerNames), nil
}
// GetDomainCorrections returns a list of corretions for the domain.
func (api *DoApi) GetDomainCorrections(dc *models.DomainConfig) ([]*models.Correction, error) {
ctx := context.Background()
dc.Punycode()
records, err := getRecords(api, dc.Name)
if err != nil {
return nil, err
}
existingRecords := make([]*models.RecordConfig, len(records))
for i := range records {
existingRecords[i] = toRc(dc, &records[i])
}
// Normalize
models.PostProcessRecords(existingRecords)
differ := diff.New(dc)
_, create, delete, modify := differ.IncrementalDiff(existingRecords)
var corrections = []*models.Correction{}
// Deletes first so changing type works etc.
for _, m := range delete {
id := m.Existing.Original.(*godo.DomainRecord).ID
corr := &models.Correction{
Msg: fmt.Sprintf("%s, DO ID: %d", m.String(), id),
F: func() error {
_, err := api.client.Domains.DeleteRecord(ctx, dc.Name, id)
return err
},
}
corrections = append(corrections, corr)
}
for _, m := range create {
req := toReq(dc, m.Desired)
corr := &models.Correction{
Msg: m.String(),
F: func() error {
_, _, err := api.client.Domains.CreateRecord(ctx, dc.Name, req)
return err
},
}
corrections = append(corrections, corr)
}
for _, m := range modify {
id := m.Existing.Original.(*godo.DomainRecord).ID
req := toReq(dc, m.Desired)
corr := &models.Correction{
Msg: fmt.Sprintf("%s, DO ID: %d", m.String(), id),
F: func() error {
_, _, err := api.client.Domains.EditRecord(ctx, dc.Name, id, req)
return err
},
}
corrections = append(corrections, corr)
}
return corrections, nil
}
func getRecords(api *DoApi, name string) ([]godo.DomainRecord, error) {
ctx := context.Background()
records := []godo.DomainRecord{}
opt := &godo.ListOptions{}
for {
result, resp, err := api.client.Domains.Records(ctx, name, opt)
if err != nil {
return nil, err
}
for _, d := range result {
records = append(records, d)
}
if resp.Links == nil || resp.Links.IsLastPage() {
break
}
page, err := resp.Links.CurrentPage()
if err != nil {
return nil, err
}
opt.Page = page + 1
}
return records, nil
}
func toRc(dc *models.DomainConfig, r *godo.DomainRecord) *models.RecordConfig {
// This handles "@" etc.
name := dnsutil.AddOrigin(r.Name, dc.Name)
target := r.Data
// Make target FQDN (#rtype_variations)
if r.Type == "CNAME" || r.Type == "MX" || r.Type == "NS" || r.Type == "SRV" {
// If target is the domainname, e.g. cname foo.example.com -> example.com,
// DO returns "@" on read even if fqdn was written.
if target == "@" {
target = dc.Name
}
target = dnsutil.AddOrigin(target+".", dc.Name)
// FIXME(tlim): The AddOrigin should be a no-op.
// Test whether or not it is actually needed.
}
t := &models.RecordConfig{
Type: r.Type,
TTL: uint32(r.TTL),
MxPreference: uint16(r.Priority),
SrvPriority: uint16(r.Priority),
SrvWeight: uint16(r.Weight),
SrvPort: uint16(r.Port),
Original: r,
}
t.SetLabelFromFQDN(name, dc.Name)
t.SetTarget(target)
switch rtype := r.Type; rtype {
case "TXT":
t.SetTargetTXTString(target)
default:
// nothing additional required
}
return t
}
func toReq(dc *models.DomainConfig, rc *models.RecordConfig) *godo.DomainRecordEditRequest {
name := rc.GetLabel() // DO wants the short name or "@" for apex.
target := rc.GetTargetField() // DO uses the target field only for a single value
priority := 0 // DO uses the same property for MX and SRV priority
switch rc.Type { // #rtype_variations
case "MX":
priority = int(rc.MxPreference)
case "SRV":
priority = int(rc.SrvPriority)
case "TXT":
// TXT records are the one place where DO combines many items into one field.
target = rc.GetTargetCombined()
default:
// no action required
}
return &godo.DomainRecordEditRequest{
Type: rc.Type,
Name: name,
Data: target,
TTL: int(rc.TTL),
Priority: priority,
Port: int(rc.SrvPort),
Weight: int(rc.SrvWeight),
}
}