SparkReceiverIO (3 2.64.0 API)

java.lang.Object
- org.apache.beam.sdk.io.sparkreceiver.SparkReceiverIO

```
public class SparkReceiverIO
extends java.lang.Object
```
Streaming sources for Spark Receiver.
Reading using SparkReceiverIO

You will need to pass a ReceiverBuilder which is responsible for instantiating new Receiver objects.
Receiver that will be used should implement HasOffset interface. You will need to pass getOffsetFn which is a SerializableFunction that defines how to get Long offset from V record.
Optionally you can pass timestampFn which is a SerializableFunction that defines how to get Instant timestamp from V record, you can pass startOffset which is inclusive start offset from which the reading should be started.
Optionally you can pass pullFrequencySec which is a delay in seconds between polling for new records updates. Also, you can pass startPollTimeoutSec which is delay in seconds before start polling.
Example of read() usage:
```
 Pipeline p = ...; // Create pipeline.

 // Create ReceiverBuilder for CustomReceiver
 ReceiverBuilder<String, CustomReceiverWithOffset> receiverBuilder =
         new ReceiverBuilder<>(CustomReceiver.class).withConstructorArgs();

 //Read from CustomReceiver
 p.apply("Spark Receiver Read",
  SparkReceiverIO.Read<String> reader =
    SparkReceiverIO.<String>read()
      .withGetOffsetFn(Long::valueOf)
      .withTimestampFn(Instant::parse)
      .withPullFrequencySec(1L)
      .withStartPollTimeoutSec(2L)
      .withStartOffset(10L)
      .withSparkReceiverBuilder(receiverBuilder);
 
```

- Nested Class Summary
  
  Nested Classes
  Modifier and Type Class Description
  
  static class SparkReceiverIO.Read<V>
  A PTransform to read from Spark Receiver.
- Constructor Summary
  
  Constructors
  Constructor Description
  
  SparkReceiverIO()
- Method Summary
  
  All Methods Static Methods Concrete Methods
  Modifier and Type Method Description
  
  static <V> SparkReceiverIO.Read<V> read()
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- SparkReceiverIO
```
public SparkReceiverIO()
```

Method Detail

read

public static <V> SparkReceiverIO.Read<V> read()