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Example 6 with KafkaInputDescriptor

use of org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor in project samza by apache.

the class KeyValueStoreExample method describe.

@Override
public void describe(StreamApplicationDescriptor appDescriptor) {
    KafkaSystemDescriptor trackingSystem = new KafkaSystemDescriptor("tracking");
    KafkaInputDescriptor<PageViewEvent> inputStreamDescriptor = trackingSystem.getInputDescriptor("pageViewEvent", new JsonSerdeV2<>(PageViewEvent.class));
    KafkaOutputDescriptor<KV<String, StatsOutput>> outputStreamDescriptor = trackingSystem.getOutputDescriptor("pageViewEventPerMember", KVSerde.of(new StringSerde(), new JsonSerdeV2<>(StatsOutput.class)));
    appDescriptor.withDefaultSystem(trackingSystem);
    MessageStream<PageViewEvent> pageViewEvents = appDescriptor.getInputStream(inputStreamDescriptor);
    OutputStream<KV<String, StatsOutput>> pageViewEventPerMember = appDescriptor.getOutputStream(outputStreamDescriptor);
    pageViewEvents.partitionBy(pve -> pve.getMemberId(), pve -> pve, KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageViewEvent.class)), "partitionBy").map(KV::getValue).flatMap(new MyStatsCounter()).map(stats -> KV.of(stats.memberId, stats)).sendTo(pageViewEventPerMember);
}
Also used : ApplicationRunner(org.apache.samza.runtime.ApplicationRunner) KafkaInputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor) CommandLine(org.apache.samza.util.CommandLine) Collection(java.util.Collection) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) PageViewEvent(org.apache.samza.example.models.PageViewEvent) FlatMapFunction(org.apache.samza.operators.functions.FlatMapFunction) ArrayList(java.util.ArrayList) StringSerde(org.apache.samza.serializers.StringSerde) TimeUnit(java.util.concurrent.TimeUnit) Context(org.apache.samza.context.Context) List(java.util.List) KafkaOutputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaOutputDescriptor) StreamApplicationDescriptor(org.apache.samza.application.descriptors.StreamApplicationDescriptor) Config(org.apache.samza.config.Config) ApplicationRunners(org.apache.samza.runtime.ApplicationRunners) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2) KVSerde(org.apache.samza.serializers.KVSerde) StreamApplication(org.apache.samza.application.StreamApplication) KeyValueStore(org.apache.samza.storage.kv.KeyValueStore) KV(org.apache.samza.operators.KV) OutputStream(org.apache.samza.operators.OutputStream) MessageStream(org.apache.samza.operators.MessageStream) StringSerde(org.apache.samza.serializers.StringSerde) PageViewEvent(org.apache.samza.example.models.PageViewEvent) KV(org.apache.samza.operators.KV) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2)

Example 7 with KafkaInputDescriptor

use of org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor in project samza by apache.

the class AppWithGlobalConfigExample method describe.

@Override
public void describe(StreamApplicationDescriptor appDescriptor) {
    KafkaSystemDescriptor trackingSystem = new KafkaSystemDescriptor("tracking");
    KafkaInputDescriptor<PageViewEvent> inputStreamDescriptor = trackingSystem.getInputDescriptor("pageViewEvent", new JsonSerdeV2<>(PageViewEvent.class));
    KafkaOutputDescriptor<KV<String, PageViewCount>> outputStreamDescriptor = trackingSystem.getOutputDescriptor("pageViewEventPerMember", KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageViewCount.class)));
    appDescriptor.getInputStream(inputStreamDescriptor).window(Windows.<PageViewEvent, String, Integer>keyedTumblingWindow(PageViewEvent::getMemberId, Duration.ofSeconds(10), () -> 0, (m, c) -> c + 1, null, null).setEarlyTrigger(Triggers.repeat(Triggers.count(5))).setAccumulationMode(AccumulationMode.DISCARDING), "window1").map(m -> KV.of(m.getKey().getKey(), buildPageViewCount(m))).sendTo(appDescriptor.getOutputStream(outputStreamDescriptor));
    appDescriptor.withMetricsReporterFactories(new HashMap<>());
}
Also used : ApplicationRunner(org.apache.samza.runtime.ApplicationRunner) Windows(org.apache.samza.operators.windows.Windows) KafkaInputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor) CommandLine(org.apache.samza.util.CommandLine) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) HashMap(java.util.HashMap) PageViewEvent(org.apache.samza.example.models.PageViewEvent) Triggers(org.apache.samza.operators.triggers.Triggers) WindowPane(org.apache.samza.operators.windows.WindowPane) StringSerde(org.apache.samza.serializers.StringSerde) PageViewCount(org.apache.samza.example.models.PageViewCount) KafkaOutputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaOutputDescriptor) StreamApplicationDescriptor(org.apache.samza.application.descriptors.StreamApplicationDescriptor) AccumulationMode(org.apache.samza.operators.windows.AccumulationMode) Duration(java.time.Duration) Config(org.apache.samza.config.Config) ApplicationRunners(org.apache.samza.runtime.ApplicationRunners) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2) KVSerde(org.apache.samza.serializers.KVSerde) StreamApplication(org.apache.samza.application.StreamApplication) KV(org.apache.samza.operators.KV) StringSerde(org.apache.samza.serializers.StringSerde) PageViewEvent(org.apache.samza.example.models.PageViewEvent) KV(org.apache.samza.operators.KV) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2)

Example 8 with KafkaInputDescriptor

use of org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor in project samza by apache.

the class BroadcastExample method describe.

@Override
public void describe(StreamApplicationDescriptor appDescriptor) {
    KVSerde<String, PageViewEvent> serde = KVSerde.of(new StringSerde("UTF-8"), new JsonSerdeV2<>(PageViewEvent.class));
    KafkaSystemDescriptor trackingSystem = new KafkaSystemDescriptor("tracking");
    KafkaInputDescriptor<KV<String, PageViewEvent>> pageViewEvent = trackingSystem.getInputDescriptor("pageViewEvent", serde);
    KafkaOutputDescriptor<KV<String, PageViewEvent>> outStream1 = trackingSystem.getOutputDescriptor("outStream1", serde);
    KafkaOutputDescriptor<KV<String, PageViewEvent>> outStream2 = trackingSystem.getOutputDescriptor("outStream2", serde);
    KafkaOutputDescriptor<KV<String, PageViewEvent>> outStream3 = trackingSystem.getOutputDescriptor("outStream3", serde);
    MessageStream<KV<String, PageViewEvent>> inputStream = appDescriptor.getInputStream(pageViewEvent);
    inputStream.filter(m -> m.key.equals("key1")).sendTo(appDescriptor.getOutputStream(outStream1));
    inputStream.filter(m -> m.key.equals("key2")).sendTo(appDescriptor.getOutputStream(outStream2));
    inputStream.filter(m -> m.key.equals("key3")).sendTo(appDescriptor.getOutputStream(outStream3));
}
Also used : ApplicationRunner(org.apache.samza.runtime.ApplicationRunner) KafkaInputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor) CommandLine(org.apache.samza.util.CommandLine) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) PageViewEvent(org.apache.samza.example.models.PageViewEvent) StringSerde(org.apache.samza.serializers.StringSerde) KafkaOutputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaOutputDescriptor) StreamApplicationDescriptor(org.apache.samza.application.descriptors.StreamApplicationDescriptor) Config(org.apache.samza.config.Config) ApplicationRunners(org.apache.samza.runtime.ApplicationRunners) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2) KVSerde(org.apache.samza.serializers.KVSerde) StreamApplication(org.apache.samza.application.StreamApplication) KV(org.apache.samza.operators.KV) MessageStream(org.apache.samza.operators.MessageStream) StringSerde(org.apache.samza.serializers.StringSerde) PageViewEvent(org.apache.samza.example.models.PageViewEvent) KV(org.apache.samza.operators.KV) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor)

Example 9 with KafkaInputDescriptor

use of org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor in project samza by apache.

the class OrderShipmentJoinExample method describe.

@Override
public void describe(StreamApplicationDescriptor appDescriptor) {
    KafkaSystemDescriptor trackingSystem = new KafkaSystemDescriptor("tracking");
    KafkaInputDescriptor<OrderRecord> orderStreamDescriptor = trackingSystem.getInputDescriptor("orders", new JsonSerdeV2<>(OrderRecord.class));
    KafkaInputDescriptor<ShipmentRecord> shipmentStreamDescriptor = trackingSystem.getInputDescriptor("shipments", new JsonSerdeV2<>(ShipmentRecord.class));
    KafkaOutputDescriptor<KV<String, FulfilledOrderRecord>> fulfilledOrdersStreamDescriptor = trackingSystem.getOutputDescriptor("fulfilledOrders", KVSerde.of(new StringSerde(), new JsonSerdeV2<>(FulfilledOrderRecord.class)));
    appDescriptor.getInputStream(orderStreamDescriptor).join(appDescriptor.getInputStream(shipmentStreamDescriptor), new MyJoinFunction(), new StringSerde(), new JsonSerdeV2<>(OrderRecord.class), new JsonSerdeV2<>(ShipmentRecord.class), Duration.ofMinutes(1), "join").map(fulFilledOrder -> KV.of(fulFilledOrder.orderId, fulFilledOrder)).sendTo(appDescriptor.getOutputStream(fulfilledOrdersStreamDescriptor));
}
Also used : ApplicationRunner(org.apache.samza.runtime.ApplicationRunner) KafkaInputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor) CommandLine(org.apache.samza.util.CommandLine) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) JoinFunction(org.apache.samza.operators.functions.JoinFunction) StringSerde(org.apache.samza.serializers.StringSerde) KafkaOutputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaOutputDescriptor) StreamApplicationDescriptor(org.apache.samza.application.descriptors.StreamApplicationDescriptor) Duration(java.time.Duration) Config(org.apache.samza.config.Config) ApplicationRunners(org.apache.samza.runtime.ApplicationRunners) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2) KVSerde(org.apache.samza.serializers.KVSerde) StreamApplication(org.apache.samza.application.StreamApplication) KV(org.apache.samza.operators.KV) StringSerde(org.apache.samza.serializers.StringSerde) KV(org.apache.samza.operators.KV) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2)

Example 10 with KafkaInputDescriptor

use of org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor in project samza by apache.

the class RepartitionExample method describe.

@Override
public void describe(StreamApplicationDescriptor appDescriptor) {
    KafkaSystemDescriptor trackingSystem = new KafkaSystemDescriptor("tracking");
    KafkaInputDescriptor<PageViewEvent> inputStreamDescriptor = trackingSystem.getInputDescriptor("pageViewEvent", new JsonSerdeV2<>(PageViewEvent.class));
    KafkaOutputDescriptor<KV<String, MyStreamOutput>> outputStreamDescriptor = trackingSystem.getOutputDescriptor("pageViewEventPerMember", KVSerde.of(new StringSerde(), new JsonSerdeV2<>(MyStreamOutput.class)));
    appDescriptor.withDefaultSystem(trackingSystem);
    MessageStream<PageViewEvent> pageViewEvents = appDescriptor.getInputStream(inputStreamDescriptor);
    OutputStream<KV<String, MyStreamOutput>> pageViewEventPerMember = appDescriptor.getOutputStream(outputStreamDescriptor);
    pageViewEvents.partitionBy(pve -> pve.getMemberId(), pve -> pve, KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageViewEvent.class)), "partitionBy").window(Windows.keyedTumblingWindow(KV::getKey, Duration.ofMinutes(5), () -> 0, (m, c) -> c + 1, null, null), "window").map(windowPane -> KV.of(windowPane.getKey().getKey(), new MyStreamOutput(windowPane))).sendTo(pageViewEventPerMember);
}
Also used : ApplicationRunner(org.apache.samza.runtime.ApplicationRunner) Windows(org.apache.samza.operators.windows.Windows) KafkaInputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor) CommandLine(org.apache.samza.util.CommandLine) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) PageViewEvent(org.apache.samza.example.models.PageViewEvent) WindowPane(org.apache.samza.operators.windows.WindowPane) StringSerde(org.apache.samza.serializers.StringSerde) KafkaOutputDescriptor(org.apache.samza.system.kafka.descriptors.KafkaOutputDescriptor) StreamApplicationDescriptor(org.apache.samza.application.descriptors.StreamApplicationDescriptor) Duration(java.time.Duration) Config(org.apache.samza.config.Config) ApplicationRunners(org.apache.samza.runtime.ApplicationRunners) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2) KVSerde(org.apache.samza.serializers.KVSerde) StreamApplication(org.apache.samza.application.StreamApplication) KV(org.apache.samza.operators.KV) OutputStream(org.apache.samza.operators.OutputStream) MessageStream(org.apache.samza.operators.MessageStream) StringSerde(org.apache.samza.serializers.StringSerde) PageViewEvent(org.apache.samza.example.models.PageViewEvent) KV(org.apache.samza.operators.KV) KafkaSystemDescriptor(org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor) JsonSerdeV2(org.apache.samza.serializers.JsonSerdeV2)

Aggregations

StreamApplication (org.apache.samza.application.StreamApplication)11 StreamApplicationDescriptor (org.apache.samza.application.descriptors.StreamApplicationDescriptor)11 Config (org.apache.samza.config.Config)11 JsonSerdeV2 (org.apache.samza.serializers.JsonSerdeV2)11 KafkaInputDescriptor (org.apache.samza.system.kafka.descriptors.KafkaInputDescriptor)11 KafkaSystemDescriptor (org.apache.samza.system.kafka.descriptors.KafkaSystemDescriptor)11 KV (org.apache.samza.operators.KV)10 ApplicationRunner (org.apache.samza.runtime.ApplicationRunner)10 ApplicationRunners (org.apache.samza.runtime.ApplicationRunners)10 KVSerde (org.apache.samza.serializers.KVSerde)10 StringSerde (org.apache.samza.serializers.StringSerde)10 KafkaOutputDescriptor (org.apache.samza.system.kafka.descriptors.KafkaOutputDescriptor)10 CommandLine (org.apache.samza.util.CommandLine)10 MessageStream (org.apache.samza.operators.MessageStream)9 Duration (java.time.Duration)8 OutputStream (org.apache.samza.operators.OutputStream)7 Windows (org.apache.samza.operators.windows.Windows)7 PageViewEvent (org.apache.samza.example.models.PageViewEvent)6 WindowPane (org.apache.samza.operators.windows.WindowPane)4 List (java.util.List)3