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lego/providers/dns/dyn/client.go

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package dyn
import (
"bytes"
"encoding/json"
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"errors"
"fmt"
"net/http"
)
const defaultBaseURL = "https://api.dynect.net/REST"
type dynResponse struct {
// One of 'success', 'failure', or 'incomplete'
Status string `json:"status"`
// The structure containing the actual results of the request
Data json.RawMessage `json:"data"`
// The ID of the job that was created in response to a request.
JobID int `json:"job_id"`
// A list of zero or more messages
Messages json.RawMessage `json:"msgs"`
}
type credentials struct {
Customer string `json:"customer_name"`
User string `json:"user_name"`
Pass string `json:"password"`
}
type session struct {
Token string `json:"token"`
Version string `json:"version"`
}
type publish struct {
Publish bool `json:"publish"`
Notes string `json:"notes"`
}
// Starts a new Dyn API Session. Authenticates using customerName, userName,
// password and receives a token to be used in for subsequent requests.
func (d *DNSProvider) login() error {
payload := &credentials{Customer: d.config.CustomerName, User: d.config.UserName, Pass: d.config.Password}
dynRes, err := d.sendRequest(http.MethodPost, "Session", payload)
if err != nil {
return err
}
var s session
err = json.Unmarshal(dynRes.Data, &s)
if err != nil {
return err
}
d.token = s.Token
return nil
}
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// Destroys Dyn Session.
func (d *DNSProvider) logout() error {
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if d.token == "" {
// nothing to do
return nil
}
url := fmt.Sprintf("%s/Session", defaultBaseURL)
req, err := http.NewRequest(http.MethodDelete, url, nil)
if err != nil {
return err
}
req.Header.Set("Content-Type", "application/json")
req.Header.Set("Auth-Token", d.token)
resp, err := d.config.HTTPClient.Do(req)
if err != nil {
return err
}
resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return fmt.Errorf("API request failed to delete session with HTTP status code %d", resp.StatusCode)
}
d.token = ""
return nil
}
func (d *DNSProvider) publish(zone, notes string) error {
pub := &publish{Publish: true, Notes: notes}
resource := fmt.Sprintf("Zone/%s/", zone)
_, err := d.sendRequest(http.MethodPut, resource, pub)
return err
}
func (d *DNSProvider) sendRequest(method, resource string, payload interface{}) (*dynResponse, error) {
url := fmt.Sprintf("%s/%s", defaultBaseURL, resource)
body, err := json.Marshal(payload)
if err != nil {
return nil, err
}
req, err := http.NewRequest(method, url, bytes.NewReader(body))
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/json")
if len(d.token) > 0 {
req.Header.Set("Auth-Token", d.token)
}
resp, err := d.config.HTTPClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
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if resp.StatusCode >= http.StatusInternalServerError {
return nil, fmt.Errorf("API request failed with HTTP status code %d", resp.StatusCode)
}
var dynRes dynResponse
err = json.NewDecoder(resp.Body).Decode(&dynRes)
if err != nil {
return nil, err
}
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if resp.StatusCode >= http.StatusBadRequest {
return nil, fmt.Errorf("API request failed with HTTP status code %d: %s", resp.StatusCode, dynRes.Messages)
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} else if resp.StatusCode == http.StatusTemporaryRedirect {
// TODO add support for HTTP 307 response and long running jobs
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return nil, errors.New("API request returned HTTP 307. This is currently unsupported")
}
if dynRes.Status == "failure" {
// TODO add better error handling
return nil, fmt.Errorf("API request failed: %s", dynRes.Messages)
}
return &dynRes, nil
}