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package kafka
import (
"context"
"fmt"
"net"
"time"
"github.com/segmentio/kafka-go/protocol/addoffsetstotxn"
)
// AddOffsetsToTxnRequest is the request structure for the AddOffsetsToTxn function.
type AddOffsetsToTxnRequest struct {
// Address of the kafka broker to send the request to.
Addr net.Addr
// The transactional id key
TransactionalID string
// The Producer ID (PID) for the current producer session;
// received from an InitProducerID request.
ProducerID int
// The epoch associated with the current producer session for the given PID
ProducerEpoch int
// The unique group identifier.
GroupID string
}
// AddOffsetsToTxnResponse is the response structure for the AddOffsetsToTxn function.
type AddOffsetsToTxnResponse struct {
// The amount of time that the broker throttled the request.
Throttle time.Duration
// An error that may have occurred when attempting to add the offsets
// to a transaction.
//
// The errors contain the kafka error code. Programs may use the standard
// errors.Is function to test the error against kafka error codes.
Error error
}
// AddOffsetsToTnx sends an add offsets to txn request to a kafka broker and returns the response.
func (c *Client) AddOffsetsToTxn(
ctx context.Context,
req *AddOffsetsToTxnRequest,
) (*AddOffsetsToTxnResponse, error) {
m, err := c.roundTrip(ctx, req.Addr, &addoffsetstotxn.Request{
TransactionalID: req.TransactionalID,
ProducerID: int64(req.ProducerID),
ProducerEpoch: int16(req.ProducerEpoch),
GroupID: req.GroupID,
})
if err != nil {
return nil, fmt.Errorf("kafka.(*Client).AddOffsetsToTxn: %w", err)
}
r := m.(*addoffsetstotxn.Response)
res := &AddOffsetsToTxnResponse{
Throttle: makeDuration(r.ThrottleTimeMs),
Error: makeError(r.ErrorCode, ""),
}
return res, nil
}
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