RobertIndie commented on code in PR #1301:
URL: https://github.com/apache/pulsar-client-go/pull/1301#discussion_r1825384307
##########
pulsar/consumer.go:
##########
@@ -307,6 +307,14 @@ type Consumer interface {
// AckID the consumption of a single message, identified by its
MessageID
AckID(MessageID) error
+ // AckIDList the consumption of a list of messages, identified by their
MessageIDs
+ // Returns a map of MessageID to error, the keys are the MessageIDs
that failed to be acknowledged
+ // NOTE: When EnableBatchIndexAcknowledgment is false, if a message ID
represents a message in the batch,
+ // it will not be actually acknowledged by broker until all messages in
that batch are acknowledged via
+ // the AckID or AckIDList method.
+ // However, in this case, no error will be returned for that message ID
even if AckWithResponse is true.
+ AckIDList([]MessageID) map[MessageID]error
Review Comment:
Can we return the `error` directly to simplify this API?
And we can also define the error type like this to let users get more
specified errors for each msg ids:
```go
type AckIDListError map[MessageID]error
func (e AckIDListError) Error() string {
return "some message IDs failed to be acknowledged"
}
```
This way, the user can process the error like this:
```go
if err != nil {
if ackErr, ok := err.(AckIDListError); ok {
for id, e := range ackErr {
fmt.Printf("Message ID %d: %s\n", id, e)
}
}
}
```
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