TestStream.Builder (Google Cloud Dataflow SDK 1.9.1 API)

Google Cloud Dataflow SDK for Java, version 1.9.1

Warning: Dataflow SDK 1.x for Java is unsupported as of October 16, 2018. After August 12, 2020, you can use unsupported SDKs temporarily while you upgrade your pipelines. For more information, see Using an unsupported SDK.

For information on migrating from the 1.x SDK, see Migrating from Dataflow SDK 1.x for Java.

Note: If you are using Cloud Dataflow SDK version 2.x, see the Apache Beam API reference documentation.

com.google.cloud.dataflow.sdk.testing

Class TestStream.Builder<T>

• java.lang.Object
• • com.google.cloud.dataflow.sdk.testing.TestStream.Builder<T>

• Enclosing class:

  TestStream<T>

  ---

  
  

  public static class TestStream.Builder<T>
  extends Object

  An incomplete TestStream. Elements added to this builder will be produced in sequence when the pipeline created by the TestStream is run.

• • Method Summary

    All Methods Instance Methods Concrete Methods 

    Modifier and Type	Method and Description
    TestStream.Builder<T>	addElements(TimestampedValue<T> first, TimestampedValue<T>... rest) Adds the specified elements to the source with the provided timestamps.
    TestStream.Builder<T>	addElements(T first, T... rest) Adds the specified elements to the source with timestamp equal to the current watermark.
    TestStream.Builder<T>	advanceProcessingTime(Duration amount) Advance the processing time by the specified amount.
    TestStream.Builder<T>	advanceWatermarkTo(Instant newWatermark) Advance the watermark of this source to the specified instant.
    TestStream<T>	advanceWatermarkToInfinity() Advance the watermark to infinity, completing this TestStream.

    • Methods inherited from class java.lang.Object

      clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• • Method Detail

    • addElements

      @SafeVarargs
      public final TestStream.Builder<T> addElements(T first,
                                                                  T... rest)

      Adds the specified elements to the source with timestamp equal to the current watermark.

      Returns:

      A TestStream.Builder like this one that will emit the provided elements after all earlier events have completed.

    • addElements

      @SafeVarargs
      public final TestStream.Builder<T> addElements(TimestampedValue<T> first,
                                                                  TimestampedValue<T>... rest)

      Adds the specified elements to the source with the provided timestamps.

      Returns:

      A TestStream.Builder like this one that will emit the provided elements after all earlier events have completed.

    • advanceWatermarkTo

      public TestStream.Builder<T> advanceWatermarkTo(Instant newWatermark)

      Advance the watermark of this source to the specified instant.

      The watermark must advance monotonically and cannot advance to BoundedWindow.TIMESTAMP_MAX_VALUE or beyond.

      Returns:

      A TestStream.Builder like this one that will advance the watermark to the specified point after all earlier events have completed.

    • advanceProcessingTime

      public TestStream.Builder<T> advanceProcessingTime(Duration amount)

      Advance the processing time by the specified amount.

      Returns:

      A TestStream.Builder like this one that will advance the processing time by the specified amount after all earlier events have completed.

    • advanceWatermarkToInfinity

      public TestStream<T> advanceWatermarkToInfinity()

      Advance the watermark to infinity, completing this TestStream. Future calls to the same builder will not affect the returned TestStream.