func()

in pkg/sts.go [108:141]

• 26 lines of code
• 2 McCabe index (conditional complexity)

func (c *Client) generateSignedURL(expiredTime uint) (string, error) {
	uid := uuid.NewV4()
	rst := uid.String()
	queryStr := "SignatureVersion=" + StsSignVersion
	queryStr += "&Format=" + RespBodyFormat
	queryStr += "&Timestamp=" + url.QueryEscape(time.Now().UTC().Format(TimeFormat))
	queryStr += "&RoleArn=" + url.QueryEscape(c.RoleArn)
	queryStr += "&RoleSessionName=" + c.SessionName
	queryStr += "&AccessKeyId=" + c.AccessKeyId
	queryStr += "&SignatureMethod=HMAC-SHA1"
	queryStr += "&Version=" + StsAPIVersion
	queryStr += "&Action=AssumeRole"
	queryStr += "&SignatureNonce=" + rst
	queryStr += "&DurationSeconds=" + strconv.FormatUint((uint64)(expiredTime), 10)

	// Sort query string
	queryParams, err := url.ParseQuery(queryStr)
	if err != nil {
		return "", err
	}
	result := queryParams.Encode()

	strToSign := HTTPGet + "&" + PercentEncode + "&" + url.QueryEscape(result)

	// Generate signature
	hashSign := hmac.New(sha1.New, []byte(c.AccessKeySecret+"&"))
	hashSign.Write([]byte(strToSign))
	signature := base64.StdEncoding.EncodeToString(hashSign.Sum(nil))

	// Build url
	assumeURL := StsHost + "?" + queryStr + "&Signature=" + url.QueryEscape(signature)

	return assumeURL, nil
}