Function downloadAsset

pkg/cmd/extension/http.go:77–108

downloadAsset downloads a single asset to the given file path.

(httpClient *http.Client, asset releaseAsset, destPath string)

// downloadAsset downloads a single asset to the given file path.
func downloadAsset(httpClient *http.Client, asset releaseAsset, destPath string) (downloadErr error) {
	var req *http.Request
	if req, downloadErr = http.NewRequest("GET", asset.APIURL, nil); downloadErr != nil {
		return
	}

	req.Header.Set("Accept", "application/octet-stream")

	var resp *http.Response
	if resp, downloadErr = httpClient.Do(req); downloadErr != nil {
		return
	}
	defer resp.Body.Close()

	if resp.StatusCode > 299 {
		downloadErr = api.HandleHTTPError(resp)
		return
	}

	var f *os.File
	if f, downloadErr = os.OpenFile(destPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0755); downloadErr != nil {
		return
	}
	defer func() {
		if err := f.Close(); downloadErr == nil && err != nil {
			downloadErr = err
		}
	}()

	_, downloadErr = io.Copy(f, resp.Body)
	return
}

var commitNotFoundErr = errors.New("commit not found")
var releaseNotFoundErr = errors.New("release not found")