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ns1provider.go
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ns1provider.go
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package ns1
import (
"encoding/json"
"fmt"
"github.com/StackExchange/dnscontrol/models"
"github.com/StackExchange/dnscontrol/providers"
"github.com/pkg/errors"
"net/http"
"strings"
"github.com/StackExchange/dnscontrol/providers/diff"
"gopkg.in/ns1/ns1-go.v2/rest"
"gopkg.in/ns1/ns1-go.v2/rest/model/dns"
)
var docNotes = providers.DocumentationNotes{
providers.DocCreateDomains: providers.Cannot(),
providers.DocOfficiallySupported: providers.Cannot(),
providers.DocDualHost: providers.Can(),
}
func init() {
providers.RegisterDomainServiceProviderType("NS1", newProvider, providers.CanUseSRV, docNotes)
}
type nsone struct {
*rest.Client
}
func newProvider(creds map[string]string, meta json.RawMessage) (providers.DNSServiceProvider, error) {
if creds["api_token"] == "" {
return nil, errors.Errorf("api_token required for ns1")
}
return &nsone{rest.NewClient(http.DefaultClient, rest.SetAPIKey(creds["api_token"]))}, nil
}
func (n *nsone) GetNameservers(domain string) ([]*models.Nameserver, error) {
z, _, err := n.Zones.Get(domain)
if err != nil {
return nil, err
}
return models.StringsToNameservers(z.DNSServers), nil
}
func (n *nsone) GetDomainCorrections(dc *models.DomainConfig) ([]*models.Correction, error) {
dc.Punycode()
//dc.CombineMXs()
z, _, err := n.Zones.Get(dc.Name)
if err != nil {
return nil, err
}
found := models.Records{}
for _, r := range z.Records {
zrs, err := convert(r, dc.Name)
if err != nil {
return nil, err
}
found = append(found, zrs...)
}
foundGrouped := found.Grouped()
desiredGrouped := dc.Records.Grouped()
// Normalize
models.PostProcessRecords(found)
differ := diff.New(dc)
changedGroups := differ.ChangedGroups(found)
corrections := []*models.Correction{}
// each name/type is given to the api as a unit.
for k, descs := range changedGroups {
key := k
desc := strings.Join(descs, "\n")
_, current := foundGrouped[k]
recs, wanted := desiredGrouped[k]
if wanted && !current {
// pure addition
corrections = append(corrections, &models.Correction{
Msg: desc,
F: func() error { return n.add(recs, dc.Name) },
})
} else if current && !wanted {
// pure deletion
corrections = append(corrections, &models.Correction{
Msg: desc,
F: func() error { return n.remove(key, dc.Name) },
})
} else {
// modification
corrections = append(corrections, &models.Correction{
Msg: desc,
F: func() error { return n.modify(recs, dc.Name) },
})
}
}
return corrections, nil
}
func (n *nsone) add(recs models.Records, domain string) error {
_, err := n.Records.Create(buildRecord(recs, domain, ""))
return err
}
func (n *nsone) remove(key models.RecordKey, domain string) error {
_, err := n.Records.Delete(domain, key.NameFQDN, key.Type)
return err
}
func (n *nsone) modify(recs models.Records, domain string) error {
_, err := n.Records.Update(buildRecord(recs, domain, ""))
return err
}
func buildRecord(recs models.Records, domain string, id string) *dns.Record {
r := recs[0]
rec := &dns.Record{
Domain: r.GetLabelFQDN(),
Type: r.Type,
ID: id,
TTL: int(r.TTL),
Zone: domain,
}
for _, r := range recs {
if r.Type == "TXT" {
rec.AddAnswer(&dns.Answer{Rdata: r.TxtStrings})
} else if r.Type == "SRV" {
rec.AddAnswer(&dns.Answer{Rdata: strings.Split(fmt.Sprintf("%d %d %d %v", r.SrvPriority, r.SrvWeight, r.SrvPort, r.GetTargetField()), " ")})
} else {
rec.AddAnswer(&dns.Answer{Rdata: strings.Split(r.GetTargetField(), " ")})
}
}
return rec
}
func convert(zr *dns.ZoneRecord, domain string) ([]*models.RecordConfig, error) {
found := []*models.RecordConfig{}
for _, ans := range zr.ShortAns {
rec := &models.RecordConfig{
TTL: uint32(zr.TTL),
Original: zr,
}
rec.SetLabelFromFQDN(zr.Domain, domain)
switch rtype := zr.Type; rtype {
default:
if err := rec.PopulateFromString(rtype, ans, domain); err != nil {
panic(errors.Wrap(err, "unparsable record received from ns1"))
}
}
found = append(found, rec)
}
return found, nil
}