Fix orientdb gzip compression

graffiti/storage/orientdb/client.go

@@ -320,6 +320,10 @@ func (c *Client) Request(method string, url string, body io.Reader) (*http.Respo
  return nil, err
  }
 
+ if body != nil {
+ request.Header.Set("Content-Encoding", "gzip")
+ }
+
  if !c.authenticated {
  request.SetBasicAuth(c.username, c.password)
  } else {
@@ -555,7 +559,7 @@ func (c *Client) CreateDatabase() (*Result, error) {
 // SQL Simple Query Language, send a query to the OrientDB server
 func (c *Client) SQL(query string) (*Result, error) {
  url := fmt.Sprintf("%s/command/%s/sql", c.url, c.database)
- resp, err := c.Request("POST", url, bytes.NewBufferString(query))
+ resp, err := c.Request("POST", url, strings.NewReader(query))
  if err != nil {
  return nil, err
  }
@@ -604,7 +608,7 @@ func (c *Client) reconnect() error {
 
  defer resp.Body.Close()
  if resp.StatusCode >= 400 {
- return fmt.Errorf("Failed to authenticate to OrientDB: %s", resp.Status)
+ return fmt.Errorf("failed to authenticate to OrientDB: %s", resp.Status)
  }
 
  if resp.StatusCode < 400 && len(resp.Cookies()) != 0 {