Examples with ReadRowsUserCallable com.google.cloud.bigtable.data.v2.stub.readrows.ReadRowsUserCallable used on opensource projects

Example 1 with ReadRowsUserCallable

use of com.google.cloud.bigtable.data.v2.stub.readrows.ReadRowsUserCallable in project java-bigtable by googleapis.

the class ReadRowsUserCallableTest method testRequestConverted.

@Test
public void testRequestConverted() {
    ServerStreamingStashCallable<ReadRowsRequest, Row> innerCallable = new ServerStreamingStashCallable<>();
    ReadRowsUserCallable<Row> callable = new ReadRowsUserCallable<>(innerCallable, REQUEST_CONTEXT);
    Query query = Query.create("fake-table");
    callable.call(query);
    Truth.assertThat(innerCallable.getActualRequest()).isEqualTo(query.toProto(REQUEST_CONTEXT));
}

Example 2 with ReadRowsUserCallable

use of com.google.cloud.bigtable.data.v2.stub.readrows.ReadRowsUserCallable in project java-bigtable by googleapis.

the class ReadRowsUserCallableTest method testFirstIsLimited.

@Test
public void testFirstIsLimited() {
    ServerStreamingStashCallable<ReadRowsRequest, Row> innerCallable = new ServerStreamingStashCallable<>();
    ReadRowsUserCallable<Row> callable = new ReadRowsUserCallable<>(innerCallable, REQUEST_CONTEXT);
    Query query = Query.create("fake-table");
    callable.first().call(query);
    Truth.assertThat(innerCallable.getActualRequest()).isEqualTo(query.limit(1).toProto(REQUEST_CONTEXT));
}

Example 3 with ReadRowsUserCallable

use of com.google.cloud.bigtable.data.v2.stub.readrows.ReadRowsUserCallable in project java-bigtable by googleapis.

the class EnhancedBigtableStub method createReadRowsCallable.

/**
 * Creates a callable chain to handle streaming ReadRows RPCs. The chain will:
 *
 * <ul>
 *   <li>Convert a {@link Query} into a {@link com.google.bigtable.v2.ReadRowsRequest} and
 *       dispatch the RPC.
 *   <li>Upon receiving the response stream, it will merge the {@link
 *       com.google.bigtable.v2.ReadRowsResponse.CellChunk}s in logical rows. The actual row
 *       implementation can be configured in by the {@code rowAdapter} parameter.
 *   <li>Retry/resume on failure.
 *   <li>Filter out marker rows.
 *   <li>Add tracing & metrics.
 * </ul>
 */
public <RowT> ServerStreamingCallable<Query, RowT> createReadRowsCallable(RowAdapter<RowT> rowAdapter) {
    ServerStreamingCallable<ReadRowsRequest, RowT> readRowsCallable = createReadRowsBaseCallable(settings.readRowsSettings(), rowAdapter);
    ServerStreamingCallable<Query, RowT> readRowsUserCallable = new ReadRowsUserCallable<>(readRowsCallable, requestContext);
    SpanName span = getSpanName("ReadRows");
    ServerStreamingCallable<Query, RowT> traced = new TracedServerStreamingCallable<>(readRowsUserCallable, clientContext.getTracerFactory(), span);
    return traced.withDefaultCallContext(clientContext.getDefaultCallContext());
}

Example 4 with ReadRowsUserCallable

use of com.google.cloud.bigtable.data.v2.stub.readrows.ReadRowsUserCallable in project java-bigtable by googleapis.

the class EnhancedBigtableStub method createBulkReadRowsCallable.

/**
 * Creates a callable chain to handle bulk ReadRows RPCs. This is meant to be used in ReadRows
 * batcher. The chain will:
 *
 * <ul>
 *   <li>Convert a {@link Query} into a {@link com.google.bigtable.v2.ReadRowsRequest}.
 *   <li>Upon receiving the response stream, it will merge the {@link
 *       com.google.bigtable.v2.ReadRowsResponse.CellChunk}s in logical rows. The actual row
 *       implementation can be configured in by the {@code rowAdapter} parameter.
 *   <li>Retry/resume on failure.
 *   <li>Filter out marker rows.
 *   <li>Construct a {@link UnaryCallable} that will buffer the entire stream into memory before
 *       completing. If the stream is empty, then the list will be empty.
 *   <li>Add tracing & metrics.
 * </ul>
 */
private <RowT> UnaryCallable<Query, List<RowT>> createBulkReadRowsCallable(RowAdapter<RowT> rowAdapter) {
    ServerStreamingCallable<ReadRowsRequest, RowT> readRowsCallable = createReadRowsBaseCallable(settings.readRowsSettings(), rowAdapter);
    ServerStreamingCallable<Query, RowT> readRowsUserCallable = new ReadRowsUserCallable<>(readRowsCallable, requestContext);
    SpanName span = getSpanName("ReadRows");
    // The TracedBatcherUnaryCallable has to be wrapped by the TracedUnaryCallable, so that
    // TracedUnaryCallable can inject a tracer for the TracedBatcherUnaryCallable to interact with
    UnaryCallable<Query, List<RowT>> tracedBatcher = new TracedBatcherUnaryCallable<>(readRowsUserCallable.all());
    UnaryCallable<Query, List<RowT>> withHeaderTracer = new HeaderTracerUnaryCallable(tracedBatcher);
    UnaryCallable<Query, List<RowT>> traced = new TracedUnaryCallable<>(withHeaderTracer, clientContext.getTracerFactory(), span);
    return traced.withDefaultCallContext(clientContext.getDefaultCallContext());
}