123 lines
2.5 KiB
Go
123 lines
2.5 KiB
Go
package gandiv5
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net/http"
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)
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const apiKeyHeader = "X-Api-Key"
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// types for JSON responses with only a message
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type apiResponse struct {
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Message string `json:"message"`
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UUID string `json:"uuid,omitempty"`
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}
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// Record TXT record representation
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type Record struct {
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RRSetTTL int `json:"rrset_ttl"`
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RRSetValues []string `json:"rrset_values"`
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RRSetName string `json:"rrset_name,omitempty"`
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RRSetType string `json:"rrset_type,omitempty"`
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}
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func (d *DNSProvider) newRequest(method, resource string, body interface{}) (*http.Request, error) {
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u := fmt.Sprintf("%s/%s", d.config.BaseURL, resource)
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if body == nil {
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req, err := http.NewRequest(method, u, nil)
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if err != nil {
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return nil, err
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}
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return req, nil
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}
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reqBody, err := json.Marshal(body)
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if err != nil {
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return nil, err
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}
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req, err := http.NewRequest(method, u, bytes.NewBuffer(reqBody))
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if err != nil {
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return nil, err
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}
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req.Header.Set("Content-Type", "application/json")
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return req, nil
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}
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func (d *DNSProvider) do(req *http.Request, v interface{}) error {
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if len(d.config.APIKey) > 0 {
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req.Header.Set(apiKeyHeader, d.config.APIKey)
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}
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resp, err := d.config.HTTPClient.Do(req)
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if err != nil {
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return err
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}
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err = checkResponse(resp)
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if err != nil {
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return err
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}
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if v == nil {
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return nil
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}
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raw, err := readBody(resp)
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if err != nil {
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return fmt.Errorf("failed to read body: %v", err)
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}
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if len(raw) > 0 {
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err = json.Unmarshal(raw, v)
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if err != nil {
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return fmt.Errorf("unmarshaling error: %v: %s", err, string(raw))
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}
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}
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return nil
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}
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func checkResponse(resp *http.Response) error {
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if resp.StatusCode == 404 && resp.Request.Method == http.MethodGet {
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return nil
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}
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if resp.StatusCode >= 400 {
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data, err := readBody(resp)
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if err != nil {
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return fmt.Errorf("%d [%s] request failed: %v", resp.StatusCode, http.StatusText(resp.StatusCode), err)
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}
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message := &apiResponse{}
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err = json.Unmarshal(data, message)
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if err != nil {
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return fmt.Errorf("%d [%s] request failed: %v: %s", resp.StatusCode, http.StatusText(resp.StatusCode), err, data)
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}
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return fmt.Errorf("%d [%s] request failed: %s", resp.StatusCode, http.StatusText(resp.StatusCode), message.Message)
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}
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return nil
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}
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func readBody(resp *http.Response) ([]byte, error) {
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if resp.Body == nil {
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return nil, fmt.Errorf("response body is nil")
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}
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defer resp.Body.Close()
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rawBody, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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return rawBody, nil
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}
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