CommittableOffsetBatch

An empty CommittableOffsetBatch which does not include any offsets and commit will not commit offsets. This can be used together with updated to create a batch from some offsets.

Creates a CommittableOffsetBatch from some CommittableOffsets, where the containing type has a Foldable instance. Guaranteed to be equivalent to the following, but implemented more efficiently.

offsets.foldLeft(CommittableOffsetBatch.empty[F])(_ updated _)

Note that just like for updated, offsets have to be in order per topic-partition.

Creates a CommittableOffsetBatch from a Foldable containing As, by applying f to each A to get the CommittableOffset. Guaranteed to be equivalent to the following, but implemented more efficiently.

ga.foldLeft(CommittableOffsetBatch.empty[F])(_ updated f(_))

Note that just like for updated, offsets have to be in order per topic-partition.

Creates a CommittableOffsetBatch from some CommittableOffsets wrapped in Option, where the containing type has a Foldable instance. Guaranteed to be equivalent to the following, but implemented more efficiently.

offsets.foldLeft(CommittableOffsetBatch.empty[F]) {
 case (batch, Some(offset)) => batch.updated(offset)
 case (batch, None)         => batch
}

Note that just like for updated, offsets have to be in order per topic-partition.