Class StreamWriterV2 (2.22.0)

public class StreamWriterV2 implements AutoCloseable

A BigQuery Stream Writer that can be used to write data into BigQuery Table.

TODO: Support batching.

TODO: Support schema change.

Inheritance

java.lang.Object > StreamWriterV2

Implements

AutoCloseable

Inherited Members

Object.clone()

Object.equals(Object)

Object.finalize()

Object.getClass()

Object.hashCode()

Object.notify()

Object.notifyAll()

Object.toString()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Methods

getApiMaxRequestBytes()

public static long getApiMaxRequestBytes()

The maximum size of one request. Defined by the API.

Returns

Type	Description
long

newBuilder(String streamName)

public static StreamWriterV2.Builder newBuilder(String streamName)

Constructs a new StreamWriterV2.Builder using the given stream.

Parameter

Name	Description
streamName	`String`

Returns

Type	Description
StreamWriterV2.Builder

newBuilder(String streamName, BigQueryWriteClient client)

public static StreamWriterV2.Builder newBuilder(String streamName, BigQueryWriteClient client)

Constructs a new StreamWriterV2.Builder using the given stream and client. AppendRows needs special headers to be added to client, so a passed in client will not work. This should be used by test only.

Parameters

Name	Description
streamName	`String`
client	`BigQueryWriteClient`

Returns

Type	Description
StreamWriterV2.Builder

Methods

append(ProtoRows rows, long offset)

public ApiFuture<AppendRowsResponse> append(ProtoRows rows, long offset)

Schedules the writing of a message.

Example of writing a message.


 AppendRowsRequest message;
 ApiFuture<AppendRowsResponse> messageIdFuture = writer.append(message);
 ApiFutures.addCallback(messageIdFuture, new ApiFutureCallback<AppendRowsResponse>() {
   public void onSuccess(AppendRowsResponse response) {
     if (!response.hasError()) {
       System.out.println("written with offset: " + response.getAppendResult().getOffset());
     } else {
       System.out.println("received an in stream error: " + response.getError().toString());
     }
   }

   public void onFailure(Throwable t) {
     System.out.println("failed to write: " + t);
   }
 }, MoreExecutors.directExecutor());

Parameters

Name	Description
rows	`ProtoRows` the rows in serialized format to write to BigQuery.
offset	`long` the offset of the first row.

Returns

Type	Description
ApiFuture<AppendRowsResponse>	the append response wrapped in a future.

close()

public void close()

Close the stream writer. Shut down all resources.