// Offset sends given offset request to kafka node and returns related response.
// Calling this method on closed connection will always return ErrClosed.
func (c *connection) Offset(req *proto.OffsetReq) (*proto.OffsetResp, error) {
var ok bool
if req.CorrelationID, ok = <-c.nextID; !ok {
return nil, c.stopErr
}
respc, err := c.respWaiter(req.CorrelationID)
if err != nil {
c.logger.Error("msg", "failed waiting for response", "error", err)
return nil, fmt.Errorf("wait for response: %s", err)
}
// TODO(husio) documentation is not mentioning this directly, but I assume
// -1 is for non node clients
req.ReplicaID = -1
if _, err := req.WriteTo(c.rw); err != nil {
c.logger.Error("msg", "cannot write", "error", err)
c.releaseWaiter(req.CorrelationID)
return nil, err
}
b, ok := <-respc
if !ok {
return nil, c.stopErr
}
return proto.ReadOffsetResp(bytes.NewReader(b))
}
// Offset sends given offset request to kafka node and returns related response.
// Calling this method on closed connection will always return ErrClosed.
func (c *connection) Offset(req *proto.OffsetReq) (*proto.OffsetResp, error) {
var ok bool
if req.CorrelationID, ok = <-c.nextID; !ok {
return nil, c.stopErr
}
// TODO(husio) documentation is not mentioning this directly, but I assume
// -1 is for non node clients
req.ReplicaID = -1
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.ReadOffsetResp(bytes.NewReader(b))
}