use of com.google.cloud.bigquery.storage.v1beta2.TableName in project java-bigquerystorage by googleapis.
the class WriteBufferedStream method writeBufferedStream.
public static void writeBufferedStream(String projectId, String datasetName, String tableName) throws DescriptorValidationException, InterruptedException, IOException {
try (BigQueryWriteClient client = BigQueryWriteClient.create()) {
// Initialize a write stream for the specified table.
// For more information on WriteStream.Type, see:
// https://googleapis.dev/java/google-cloud-bigquerystorage/latest/com/google/cloud/bigquery/storage/v1/WriteStream.Type.html
WriteStream stream = WriteStream.newBuilder().setType(WriteStream.Type.BUFFERED).build();
TableName parentTable = TableName.of(projectId, datasetName, tableName);
CreateWriteStreamRequest createWriteStreamRequest = CreateWriteStreamRequest.newBuilder().setParent(parentTable.toString()).setWriteStream(stream).build();
WriteStream writeStream = client.createWriteStream(createWriteStreamRequest);
// https://googleapis.dev/java/google-cloud-bigquerystorage/latest/com/google/cloud/bigquery/storage/v1beta2/JsonStreamWriter.html
try (JsonStreamWriter writer = JsonStreamWriter.newBuilder(writeStream.getName(), writeStream.getTableSchema()).build()) {
// Write two batches to the stream, each with 10 JSON records.
for (int i = 0; i < 2; i++) {
JSONArray jsonArr = new JSONArray();
for (int j = 0; j < 10; j++) {
// Create a JSON object that is compatible with the table schema.
JSONObject record = new JSONObject();
record.put("col1", String.format("buffered-record %03d", i));
jsonArr.put(record);
}
ApiFuture<AppendRowsResponse> future = writer.append(jsonArr);
AppendRowsResponse response = future.get();
}
// Flush the buffer.
FlushRowsRequest flushRowsRequest = FlushRowsRequest.newBuilder().setWriteStream(writeStream.getName()).setOffset(// Advance the cursor to the latest record.
Int64Value.of(10 * 2 - 1)).build();
FlushRowsResponse flushRowsResponse = client.flushRows(flushRowsRequest);
// You can continue to write to the stream after flushing the buffer.
}
// Finalize the stream after use.
FinalizeWriteStreamRequest finalizeWriteStreamRequest = FinalizeWriteStreamRequest.newBuilder().setName(writeStream.getName()).build();
client.finalizeWriteStream(finalizeWriteStreamRequest);
System.out.println("Appended and committed records successfully.");
} catch (ExecutionException e) {
// If the wrapped exception is a StatusRuntimeException, check the state of the operation.
// If the state is INTERNAL, CANCELLED, or ABORTED, you can retry. For more information, see:
// https://grpc.github.io/grpc-java/javadoc/io/grpc/StatusRuntimeException.html
System.out.println(e);
}
}
use of com.google.cloud.bigquery.storage.v1beta2.TableName in project debezium-server-batch by memiiso.
the class BatchUtilTest method testSimpleSchema.
@Test
public void testSimpleSchema() throws JsonProcessingException {
TableName t = TableName.of("gcpProject", "bqDataset", "tableName");
System.out.println(t.toString());
StructType s = getEventSparkDfSchema(unwrapWithSchema);
assertNotNull(s);
assertTrue(s.catalogString().contains("id:int,order_date:int,purchaser:int,quantity:int,product_id:int,__op:string"));
}
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