public async Task CommitWithMetadataSource_Commit_metadata_in_message_Should_work()
{
var topic = CreateTopic(1);
var group = CreateGroup(1);
string MetadataFromMessage <K, V>(ConsumeResult <K, V> message) => message.Offset.ToString();
await ProduceStrings(topic, Enumerable.Range(1, 10), ProducerSettings);
var(control, probe) = KafkaConsumer.CommitWithMetadataSource(CreateConsumerSettings <string>(group), Subscriptions.Topics(topic), MetadataFromMessage)
.ToMaterialized(this.SinkProbe <CommittableMessage <Null, string> >(), Keep.Both)
.Run(Materializer);
probe.Request(10);
probe.Within(TimeSpan.FromSeconds(10), () => probe.ExpectNextN(10)).ForEach(message =>
{
var offsetWithMeta = message.CommitableOffset as ICommittableOffsetMetadata;
offsetWithMeta.Should().NotBeNull();
offsetWithMeta.Metadata.Should().Be(message.CommitableOffset.Offset.Offset.ToString());
});
probe.Cancel();
AwaitCondition(() => control.IsShutdown.IsCompletedSuccessfully, TimeSpan.FromSeconds(10));
}
private Source <CommittableMessage <K, V>, IControl> CreateSourceWithMetadata(
MockConsumer <K, V> mock,
Func <ConsumeResult <K, V>, string> metadataFromRecord,
string groupId = "group1",
string[] topics = null)
{
var settings = ConsumerSettings <K, V> .Create(Sys, Deserializers.Utf8, Deserializers.Utf8)
.WithGroupId(groupId)
.WithConsumerFactory(_ => mock.Mock);
mock.Settings = settings;
return(KafkaConsumer.CommitWithMetadataSource(
settings,
Subscriptions.Topics(topics),
metadataFromRecord));
}