// prepare sets up req to be delivered to OSS.
func (client *Client) prepare(req *request) error {
// Copy so they can be mutated without affecting on retries.
headers := copyHeader(req.headers)
params := make(url.Values)
for k, v := range req.params {
params[k] = v
}
req.params = params
req.headers = headers
if !req.prepared {
req.prepared = true
if req.method == "" {
req.method = "GET"
}
if !strings.HasPrefix(req.path, "/") {
req.path = "/" + req.path
}
err := client.setBaseURL(req)
if err != nil {
return err
}
}
req.headers.Set("Date", util.GetGMTime())
client.signRequest(req)
return nil
}
func (client *Client) doRequest(req *request) (*http.Response, error) {
payload := req.payload
if req.headers == nil {
req.headers = make(map[string]string)
}
if req.endpoint == "" {
req.endpoint = client.endpoint
}
contentLength := "0"
if payload != nil {
contentLength = strconv.Itoa(len(payload))
}
req.headers["Content-Type"] = req.contentType
req.headers["Content-Length"] = contentLength
req.headers["x-log-bodyrawsize"] = contentLength
req.headers["Date"] = util.GetGMTime()
req.headers["Host"] = req.endpoint
req.headers["x-log-apiversion"] = client.version
req.headers["x-log-signaturemethod"] = "hmac-sha1"
client.signRequest(req, payload)
var reader io.Reader
if payload != nil {
reader = bytes.NewReader(payload)
}
hreq, err := http.NewRequest(req.method, req.url(), reader)
for k, v := range req.headers {
if v != "" {
hreq.Header.Set(k, v)
}
}
if err != nil {
return nil, err
}
resp, err := client.httpClient.Do(hreq)
if err != nil {
return nil, err
}
if resp.StatusCode != 200 && resp.StatusCode != 204 && resp.StatusCode != 206 {
return nil, buildError(resp)
}
return resp, nil
}