client.go raw

   1  package internal
   2  
   3  import (
   4  	"bytes"
   5  	"context"
   6  	"encoding/json"
   7  	"fmt"
   8  	"io"
   9  	"net/http"
  10  	"net/url"
  11  	"time"
  12  
  13  	"github.com/go-acme/lego/v4/providers/dns/internal/errutils"
  14  	"github.com/go-acme/lego/v4/providers/dns/internal/useragent"
  15  )
  16  
  17  const defaultBaseURL = "https://api.hosting.nl"
  18  
  19  type Client struct {
  20  	apiKey string
  21  
  22  	BaseURL    *url.URL
  23  	HTTPClient *http.Client
  24  }
  25  
  26  func NewClient(apiKey string) *Client {
  27  	baseURL, _ := url.Parse(defaultBaseURL)
  28  
  29  	return &Client{
  30  		apiKey:     apiKey,
  31  		BaseURL:    baseURL,
  32  		HTTPClient: &http.Client{Timeout: 5 * time.Second},
  33  	}
  34  }
  35  
  36  func (c Client) AddRecord(ctx context.Context, domain string, record Record) (*Record, error) {
  37  	endpoint := c.BaseURL.JoinPath("domains", domain, "dns")
  38  
  39  	req, err := newJSONRequest(ctx, http.MethodPost, endpoint, []Record{record})
  40  	if err != nil {
  41  		return nil, err
  42  	}
  43  
  44  	var result APIResponse[Record]
  45  
  46  	err = c.do(req, &result)
  47  	if err != nil {
  48  		return nil, err
  49  	}
  50  
  51  	if len(result.Data) != 1 {
  52  		return nil, fmt.Errorf("unexpected response data: %v", result.Data)
  53  	}
  54  
  55  	return &result.Data[0], nil
  56  }
  57  
  58  func (c Client) DeleteRecord(ctx context.Context, domain, recordID string) error {
  59  	endpoint := c.BaseURL.JoinPath("domains", domain, "dns")
  60  
  61  	req, err := newJSONRequest(ctx, http.MethodDelete, endpoint, []Record{{ID: recordID}})
  62  	if err != nil {
  63  		return err
  64  	}
  65  
  66  	var result APIResponse[Record]
  67  
  68  	err = c.do(req, &result)
  69  	if err != nil {
  70  		return err
  71  	}
  72  
  73  	return nil
  74  }
  75  
  76  func (c Client) do(req *http.Request, result any) error {
  77  	useragent.SetHeader(req.Header)
  78  
  79  	req.Header.Set("API-TOKEN", c.apiKey)
  80  
  81  	resp, err := c.HTTPClient.Do(req)
  82  	if err != nil {
  83  		return errutils.NewHTTPDoError(req, err)
  84  	}
  85  
  86  	defer func() { _ = resp.Body.Close() }()
  87  
  88  	if resp.StatusCode != http.StatusOK {
  89  		return parseError(req, resp)
  90  	}
  91  
  92  	if result == nil {
  93  		return nil
  94  	}
  95  
  96  	raw, err := io.ReadAll(resp.Body)
  97  	if err != nil {
  98  		return errutils.NewReadResponseError(req, resp.StatusCode, err)
  99  	}
 100  
 101  	err = json.Unmarshal(raw, result)
 102  	if err != nil {
 103  		return errutils.NewUnmarshalError(req, resp.StatusCode, raw, err)
 104  	}
 105  
 106  	return nil
 107  }
 108  
 109  func parseError(req *http.Request, resp *http.Response) error {
 110  	raw, _ := io.ReadAll(resp.Body)
 111  
 112  	var apiErr APIError
 113  
 114  	err := json.Unmarshal(raw, &apiErr)
 115  	if err != nil {
 116  		return errutils.NewUnexpectedStatusCodeError(req, resp.StatusCode, raw)
 117  	}
 118  
 119  	return fmt.Errorf("[status code: %d] %w", resp.StatusCode, apiErr)
 120  }
 121  
 122  func newJSONRequest(ctx context.Context, method string, endpoint *url.URL, payload any) (*http.Request, error) {
 123  	buf := new(bytes.Buffer)
 124  
 125  	if payload != nil {
 126  		err := json.NewEncoder(buf).Encode(payload)
 127  		if err != nil {
 128  			return nil, fmt.Errorf("failed to create request JSON body: %w", err)
 129  		}
 130  	}
 131  
 132  	req, err := http.NewRequestWithContext(ctx, method, endpoint.String(), buf)
 133  	if err != nil {
 134  		return nil, fmt.Errorf("unable to create request: %w", err)
 135  	}
 136  
 137  	req.Header.Set("Accept", "application/json")
 138  
 139  	if payload != nil {
 140  		req.Header.Set("Content-Type", "application/json")
 141  	}
 142  
 143  	return req, nil
 144  }
 145