func getLinkRel(header string, prefix string, rel string) *string {
links := linkheader.Parse(header)
re := regexp.MustCompile(prefix + "-[^/]+")
for _, link := range links {
id := re.FindString(link.URL)
if id != "" && link.Rel == rel {
return &id
}
}
return nil
}
// Do exectes an API request with the specified parameters.
func (c *Client) Do(method string, path string, body interface{}, response interface{}) (string, error) {
r := c.RestyClient.R().
SetError(&ErrorResponse{})
if body != nil {
r = r.SetBody(body)
}
if response != nil {
r = r.SetResult(response)
}
apiResponse, err := r.Execute(method, path)
if err != nil {
return "", err
}
nextPath := ""
header := apiResponse.Header().Get("Link")
if header != "" {
links := linkheader.Parse(header)
for _, link := range links.FilterByRel("next") {
nextPath = link.URL
break
}
}
statusClass := apiResponse.StatusCode() / 100 % 10
if statusClass == 2 {
return nextPath, nil
}
rawError := apiResponse.Error()
if rawError != nil {
apiError := rawError.(*ErrorResponse)
if apiError.Detail != nil {
return "", apiError
}
}
return "", fmt.Errorf("Unexpected status %v returned from API", apiResponse.StatusCode())
}