public void Windowing()
{
var builder = new StreamBuilder();
builder.Stream <string, string>("topic")
.GroupByKey()
.WindowedBy(TumblingWindowOptions.Of(1000))
.Count(RocksDbWindows <string, long> .As <StringSerDes, Int64SerDes>("rocksdb-w-store"));
var config = new StreamConfig <StringSerDes, StringSerDes>();
config.ApplicationId = "test-rocksdb-window-store";
config.UseRandomRocksDbConfigForTest();
Topology t = builder.Build();
using (var driver = new TopologyTestDriver(t, config))
{
DateTime dt = DateTime.Now;
var inputTopic = driver.CreateInputTopic <string, string>("topic");
inputTopic.PipeInput("key1", "1", dt);
inputTopic.PipeInput("key2", "2", dt);
var store = driver.GetWindowStore <string, long>("rocksdb-w-store");
Assert.IsNotNull(store);
var k1 = store.FetchAll(dt.AddMinutes(-10), dt.AddMinutes(10)).ToList();
Assert.AreEqual(2, k1.Count);
Assert.AreEqual(1L, k1[0].Value);
Assert.AreEqual(1L, k1[1].Value);
}
config.RemoveRocksDbFolderForTest();
}
/// <summary>
/// Materialize a <see cref="RocksDbWindowStore"/> with the given name.
/// </summary>
/// <typeparam name="KS">New serializer for <typeparamref name="K"/> type</typeparam>
/// <typeparam name="VS">New serializer for <typeparamref name="V"/> type</typeparam>
/// <param name="storeName">the name of the underlying <see cref="IKTable{K, V}"/> state store; valid characters are ASCII alphanumerics, '.', '_' and '-'.</param>
/// <param name="segmentInterval"></param>
/// <param name="windowSize">the windows size aggregation</param>
/// <returns>a new <see cref="RocksDbWindows{K, V}"/> instance with the given storeName</returns>
public static RocksDbWindows <K, V> @As <KS, VS>(string storeName, TimeSpan?segmentInterval = null, TimeSpan?windowSize = null)
where KS : ISerDes <K>, new()
where VS : ISerDes <V>, new()
{
var m = new RocksDbWindows <K, V>(storeName,
new RocksDbWindowBytesStoreSupplier(
storeName,
TimeSpan.FromDays(1),
segmentInterval.HasValue ? (long)segmentInterval.Value.TotalMilliseconds : 60 * 1000 * 60,
windowSize.HasValue ? (long)windowSize.Value.TotalMilliseconds : (long?)null))
{
KeySerdes = new KS(),
ValueSerdes = new VS()
};
return(m);
}
