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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,211 @@ | ||
| package vscale | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "net/http" | ||
| ) | ||
|
|
||
| // Domain represents domain name. | ||
| type Domain struct { | ||
| ID int `json:"id,omitempty"` | ||
| Name string `json:"name,omitempty"` | ||
| } | ||
|
|
||
| // Record represents DNS record. | ||
| type Record struct { | ||
| ID int `json:"id,omitempty"` | ||
| Name string `json:"name,omitempty"` | ||
| Type string `json:"type,omitempty"` // Record type (SOA, NS, A/AAAA, CNAME, SRV, MX, TXT, SPF) | ||
| TTL int `json:"ttl,omitempty"` | ||
| Email string `json:"email,omitempty"` // Email of domain's admin (only for SOA records) | ||
| Content string `json:"content,omitempty"` // Record content (not for SRV) | ||
| } | ||
|
|
||
| // APIError API error message | ||
| type APIError struct { | ||
| Description string `json:"error"` | ||
| Code int `json:"code"` | ||
| Field string `json:"field"` | ||
| } | ||
|
|
||
| func (a *APIError) Error() string { | ||
| return fmt.Sprintf("API error: %d - %s - %s", a.Code, a.Description, a.Field) | ||
| } | ||
|
|
||
| // ClientOpts represents options to init client. | ||
| type ClientOpts struct { | ||
| BaseURL string | ||
| Token string | ||
| UserAgent string | ||
| HTTPClient *http.Client | ||
| } | ||
|
|
||
| // Client represents DNS client. | ||
| type Client struct { | ||
| baseURL string | ||
| token string | ||
| userAgent string | ||
| httpClient *http.Client | ||
| } | ||
|
|
||
| // NewClient returns a client instance. | ||
| func NewClient(opts ClientOpts) *Client { | ||
| if opts.HTTPClient == nil { | ||
| opts.HTTPClient = &http.Client{} | ||
| } | ||
|
|
||
| return &Client{ | ||
| token: opts.Token, | ||
| baseURL: opts.BaseURL, | ||
| httpClient: opts.HTTPClient, | ||
| userAgent: opts.UserAgent, | ||
| } | ||
| } | ||
|
|
||
| // GetDomainByName gets Domain object by its name. | ||
| func (c *Client) GetDomainByName(domainName string) (*Domain, error) { | ||
| uri := fmt.Sprintf("/%s", domainName) | ||
| req, err := c.newRequest(http.MethodGet, uri, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| domain := &Domain{} | ||
| _, err = c.do(req, domain) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return domain, nil | ||
| } | ||
|
|
||
| // AddRecord adds Record for given domain. | ||
| func (c *Client) AddRecord(domainID int, body Record) (*Record, error) { | ||
| uri := fmt.Sprintf("/%d/records/", domainID) | ||
| req, err := c.newRequest(http.MethodPost, uri, body) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| record := &Record{} | ||
| _, err = c.do(req, record) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return record, nil | ||
| } | ||
|
|
||
| // ListRecords returns list records for specific domain. | ||
| func (c *Client) ListRecords(domainID int) ([]*Record, error) { | ||
| uri := fmt.Sprintf("/%d/records/", domainID) | ||
| req, err := c.newRequest(http.MethodGet, uri, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| var records []*Record | ||
| _, err = c.do(req, &records) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return records, nil | ||
| } | ||
|
|
||
| // DeleteRecord deletes specific record. | ||
| func (c *Client) DeleteRecord(domainID, recordID int) error { | ||
| uri := fmt.Sprintf("/%d/records/%d", domainID, recordID) | ||
| req, err := c.newRequest(http.MethodDelete, uri, nil) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| _, err = c.do(req, nil) | ||
| return err | ||
| } | ||
|
|
||
| func (c *Client) newRequest(method, uri string, body interface{}) (*http.Request, error) { | ||
| buf := new(bytes.Buffer) | ||
|
|
||
| if body != nil { | ||
| err := json.NewEncoder(buf).Encode(body) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to encode request body with error: %v", err) | ||
| } | ||
| } | ||
|
|
||
| req, err := http.NewRequest(method, c.baseURL+uri, buf) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create new http request with error: %v", err) | ||
| } | ||
|
|
||
| req.Header.Add("X-Token", c.token) | ||
| req.Header.Add("Content-Type", "application/json") | ||
| req.Header.Add("Accept", "application/json") | ||
|
|
||
| return req, nil | ||
| } | ||
|
|
||
| func (c *Client) do(req *http.Request, to interface{}) (*http.Response, error) { | ||
| resp, err := c.httpClient.Do(req) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("request failed with error: %v", err) | ||
| } | ||
|
|
||
| err = checkResponse(resp) | ||
| if err != nil { | ||
| return resp, err | ||
| } | ||
|
|
||
| if to != nil { | ||
| if err = unmarshalBody(resp, to); err != nil { | ||
| return resp, err | ||
| } | ||
| } | ||
|
|
||
| return resp, nil | ||
| } | ||
|
|
||
| func checkResponse(resp *http.Response) error { | ||
| if resp.StatusCode >= http.StatusBadRequest && | ||
| resp.StatusCode <= http.StatusNetworkAuthenticationRequired { | ||
|
|
||
| if resp.Body == nil { | ||
| return fmt.Errorf("request failed with status code %d and empty body", resp.StatusCode) | ||
| } | ||
|
|
||
| body, err := ioutil.ReadAll(resp.Body) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| apiError := APIError{} | ||
| err = json.Unmarshal(body, &apiError) | ||
| if err != nil { | ||
| return fmt.Errorf("request failed with status code %d, response body: %s", resp.StatusCode, string(body)) | ||
| } | ||
|
|
||
| return fmt.Errorf("request failed with status code %d: %v", resp.StatusCode, apiError) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func unmarshalBody(resp *http.Response, to interface{}) error { | ||
| body, err := ioutil.ReadAll(resp.Body) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer resp.Body.Close() | ||
|
|
||
| err = json.Unmarshal(body, to) | ||
| if err != nil { | ||
| return fmt.Errorf("unmarshaling error: %v: %s", err, string(body)) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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