Esempio n. 1
0
// 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))
}
Esempio n. 2
0
// 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))
}