Package org.apache.beam.sdk.io.gcp.bigtable.changestreams.dofn

Class InitializeDoFn

java.lang.Object

org.apache.beam.sdk.transforms.DoFn<byte[],InitialPipelineState>

org.apache.beam.sdk.io.gcp.bigtable.changestreams.dofn.InitializeDoFn

All Implemented Interfaces:

Serializable, HasDisplayData

@Internal
public class InitializeDoFn
extends DoFn<byte[],InitialPipelineState>
implements Serializable

A DoFn responsible to initialize the metadata table and prepare it for managing the state of the pipeline.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.beam.sdk.transforms.DoFn

DoFn.AlwaysFetched, DoFn.BoundedPerElement, DoFn.BundleFinalizer, DoFn.Element, DoFn.FieldAccess, DoFn.FinishBundle, DoFn.FinishBundleContext, DoFn.GetInitialRestriction, DoFn.GetInitialWatermarkEstimatorState, DoFn.GetRestrictionCoder, DoFn.GetSize, DoFn.GetWatermarkEstimatorStateCoder, DoFn.Key, DoFn.MultiOutputReceiver, DoFn.NewTracker, DoFn.NewWatermarkEstimator, DoFn.OnTimer, DoFn.OnTimerContext, DoFn.OnTimerFamily, DoFn.OnWindowExpiration, DoFn.OnWindowExpirationContext, DoFn.OutputReceiver<T>, DoFn.ProcessContext, DoFn.ProcessContinuation, DoFn.ProcessElement, DoFn.RequiresStableInput, DoFn.RequiresTimeSortedInput, DoFn.Restriction, DoFn.Setup, DoFn.SideInput, DoFn.SplitRestriction, DoFn.StartBundle, DoFn.StartBundleContext, DoFn.StateId, DoFn.Teardown, DoFn.TimerFamily, DoFn.TimerId, DoFn.Timestamp, DoFn.TruncateRestriction, DoFn.UnboundedPerElement, DoFn.WatermarkEstimatorState, DoFn.WindowedContext

Constructor Summary

Constructors

Constructor	Description
InitializeDoFn(DaoFactory daoFactory, Instant startTime, BigtableIO.ExistingPipelineOptions existingPipelineOptions)

Method Summary

Modifier and Type	Method	Description
void	processElement(DoFn.OutputReceiver<InitialPipelineState> receiver)

Methods inherited from class org.apache.beam.sdk.transforms.DoFn

getAllowedTimestampSkew, getInputTypeDescriptor, getOutputTypeDescriptor, populateDisplayData, prepareForProcessing

Methods inherited from class java.lang.Object

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

Constructor Details

InitializeDoFn

public InitializeDoFn(DaoFactory daoFactory,
 Instant startTime,
 BigtableIO.ExistingPipelineOptions existingPipelineOptions)

Method Details

processElement

@ProcessElement
public void processElement(DoFn.OutputReceiver<InitialPipelineState> receiver)
                    throws IOException

Throws:

IOException