/// <inheritdoc />
public async Task Commit(ICommittableOffsetBatch batch)
{
if (!(batch is CommittableOffsetBatch batchImpl))
{
throw new ArgumentException($"Unknown CommittableOffsetBatch, got {batch.GetType().FullName}, but expected {nameof(CommittableOffsetBatch)}");
}
await Task.WhenAll(batchImpl.OffsetsAndMetadata.GroupBy(o => o.Key.GroupId).Select(group =>
{
if (!batchImpl.Committers.TryGetValue(group.Key, out var committer))
{
throw new IllegalStateException($"Unknown committer, got groupId = {group.Key}");
}
var offsets = group.Select(offset => new GroupTopicPartitionOffset(offset.Key, offset.Value.Offset)).ToImmutableList();
return(committer.Commit(offsets));
}));
}
/// <summary>
/// Adds offsets from given committable batch to existing ones
/// </summary>
private ICommittableOffsetBatch UpdateWithBatch(ICommittableOffsetBatch committableOffsetBatch)
{
if (!(committableOffsetBatch is CommittableOffsetBatch committableOffsetBatchImpl))
{
throw new ArgumentException($"Unexpected CommittableOffsetBatch, got {committableOffsetBatch.GetType().Name}, expected {nameof(CommittableOffsetBatch)}");
}
var newOffsetsAndMetdata = OffsetsAndMetadata.SetItems(committableOffsetBatchImpl.OffsetsAndMetadata);
var newCommitters = committableOffsetBatchImpl.Committers.Aggregate(Committers, (committers, pair) =>
{
var groupId = pair.Key;
var committer = pair.Value;
if (committers.TryGetValue(groupId, out var groupCommitter))
{
if (!groupCommitter.Equals(committer))
{
throw new ArgumentException($"CommittableOffsetBatch {committableOffsetBatch} committer for groupId {groupId} " +
$"must be same as the other with this groupId.");
}
return(committers);
}
else
{
return(committers.Add(groupId, committer));
}
}).ToImmutableDictionary(pair => pair.Key, pair => pair.Value);
return(new CommittableOffsetBatch(newOffsetsAndMetdata, newCommitters, BatchSize + committableOffsetBatchImpl.BatchSize));
}