// Metadata sends given metadata request to kafka node and returns related
// metadata response.
// Calling this method on closed connection will always return ErrClosed.
func (c *connection) Metadata(req *proto.MetadataReq) (*proto.MetadataResp, error) {
var ok bool
if req.CorrelationID, ok = <-c.nextID; !ok {
return nil, c.stopErr
}
if _, err := req.WriteTo(c.conn); err != nil {
return nil, err
}
b, ok := <-c.respc[req.CorrelationID]
if !ok {
return nil, c.stopErr
}
return proto.ReadMetadataResp(bytes.NewReader(b))
}
// Metadata sends given metadata request to kafka node and returns related
// metadata response.
// Calling this method on closed connection will always return ErrClosed.
func (c *connection) Metadata(req *proto.MetadataReq) (*proto.MetadataResp, error) {
var ok bool
if req.CorrelationID, ok = <-c.nextID; !ok {
return nil, c.stopErr
}
respc, err := c.respWaiter(req.CorrelationID)
if err != nil {
return nil, fmt.Errorf("wait for response: %s", err)
}
if _, err := req.WriteTo(c.rw); err != nil {
c.releaseWaiter(req.CorrelationID)
return nil, err
}
b, ok := <-respc
if !ok {
return nil, c.stopErr
}
return proto.ReadMetadataResp(bytes.NewReader(b))
}