//ListObjects calls the OpenStack list object API using previously
//obtained token. "Limit", "marker", "prefix", "path", "delim" corresponds
//to the API's "limit", "marker", "prefix", "path", and "delimiter".
func ListObjects(session *openstack.Session, limit int64,
marker, prefix, path, delim, conURL string) ([]byte, error) {
var query url.Values = url.Values{}
query.Add("format", "json")
if limit > 0 {
query.Add("limit", strconv.FormatInt(limit, 10))
}
if marker != "" {
query.Add("marker", url.QueryEscape(marker))
}
if prefix != "" {
query.Add("prefix", url.QueryEscape(prefix))
}
if path != "" {
query.Add("path", url.QueryEscape(path))
}
if delim != "" {
query.Add("delimiter", url.QueryEscape(delim))
}
resp, err := session.Get(conURL, &query, nil)
if err != nil {
return nil, err
}
if err = util.CheckHTTPResponseStatusCode(resp); err != nil {
return nil, err
}
body, err := ioutil.ReadAll(resp.Body)
defer resp.Body.Close()
if err != nil {
return []byte{}, err
}
return body, nil
}
//GetObject calls the OpenStack retrieve object API using previously
//obtained token. It returns http.Header, object / file content downloaded
//from the server, and err.
//
//Since this implementation of GetObject retrieves header info, it
//effectively executes GetObjectMeta also in addition to getting the
//object content.
func GetObject(session *openstack.Session, url string) (http.Header, []byte, error) {
resp, err := session.Get(url, nil, nil)
if err != nil {
return nil, nil, err
}
if err = util.CheckHTTPResponseStatusCode(resp); err != nil {
return nil, nil, err
}
var body []byte
if body, err = ioutil.ReadAll(resp.Body); err != nil {
return nil, nil, err
}
resp.Body.Close()
return resp.Header, body, nil
}