feat: call setting timeouts for batchers (#877)

This introduces 2 new variants of new*Batcher that accept a GrpcCallContext. This context will be used for batch RPCs generated by the batcher instance.
Also fixes handlings of timeout overrides for bukmutations. If a user set a timeout, don't override it

google-cloud-bigtable/clirr-ignored-differences.xml

@@ -28,4 +28,10 @@
         <differenceType>8001</differenceType>
         <className>com/google/cloud/bigtable/data/v2/stub/readrows/PointReadTimeoutCallable</className>
     </difference>
+    <difference>
+        <!-- change method args is ok because EnhancedBigtableStub is InternalApi -->
+        <differenceType>7004</differenceType>
+        <className>com/google/cloud/bigtable/data/v2/stub/EnhancedBigtableStub</className>
+        <method>*</method>
+    </difference>
 </differences>

google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/BigtableDataClient.java

@@ -23,6 +23,7 @@
 import com.google.api.core.BetaApi;
 import com.google.api.core.InternalApi;
 import com.google.api.gax.batching.Batcher;
+import com.google.api.gax.grpc.GrpcCallContext;
 import com.google.api.gax.rpc.ApiExceptions;
 import com.google.api.gax.rpc.ResponseObserver;
 import com.google.api.gax.rpc.ServerStream;
@@ -1073,7 +1074,40 @@ public void bulkMutateRows(BulkMutation mutation) {
    */
   @BetaApi("This surface is likely to change as the batching surface evolves.")
   public Batcher<RowMutationEntry, Void> newBulkMutationBatcher(@Nonnull String tableId) {
-    return stub.newMutateRowsBatcher(tableId);
+    return newBulkMutationBatcher(tableId, null);
+  }
+
+  /**
+   * Mutates multiple rows in a batch. Each individual row is mutated atomically as in MutateRow,
+   * but the entire batch is not executed atomically. The returned Batcher instance is not
+   * threadsafe, it can only be used from single thread. This method allows customization of the
+   * underlying RPCs by passing in a {@link com.google.api.gax.grpc.GrpcCallContext}. The same
+   * context will be reused for all batches. This can be used to customize things like per attempt
+   * timeouts.
+   *
+   * <p>Sample Code:
+   *
+   * <pre>{@code
+   * try (BigtableDataClient bigtableDataClient = BigtableDataClient.create("[PROJECT]", "[INSTANCE]")) {
+   *   try (Batcher<RowMutationEntry, Void> batcher = bigtableDataClient.newBulkMutationBatcher("[TABLE]", GrpcCallContext.createDefault().withTimeout(Duration.ofSeconds(10)))) {
+   *     for (String someValue : someCollection) {
+   *       ApiFuture<Void> entryFuture =
+   *           batcher.add(
+   *               RowMutationEntry.create("[ROW KEY]")
+   *                   .setCell("[FAMILY NAME]", "[QUALIFIER]", "[VALUE]"));
+   *     }
+   *
+   *     // Blocks until mutations are applied on all submitted row entries.
+   *     batcher.flush();
+   *   }
+   *   // Before `batcher` is closed, all remaining(If any) mutations are applied.
+   * }
+   * }</pre>
+   */
+  @BetaApi("This surface is likely to change as the batching surface evolves.")
+  public Batcher<RowMutationEntry, Void> newBulkMutationBatcher(
+      @Nonnull String tableId, @Nullable GrpcCallContext ctx) {
+    return stub.newMutateRowsBatcher(tableId, ctx);
   }
 
   /**
@@ -1159,11 +1193,61 @@ public Batcher<ByteString, Row> newBulkReadRowsBatcher(String tableId) {
    */
   public Batcher<ByteString, Row> newBulkReadRowsBatcher(
       String tableId, @Nullable Filters.Filter filter) {
+    return newBulkReadRowsBatcher(tableId, filter, null);
+  }
+
+  /**
+   * Reads rows for given tableId and filter criteria in a batch. If the row does not exist, the
+   * value will be null. The returned Batcher instance is not threadsafe, it can only be used from a
+   * single thread. This method allows customization of the underlying RPCs by passing in a {@link
+   * com.google.api.gax.grpc.GrpcCallContext}. The same context will be reused for all batches. This
+   * can be used to customize things like per attempt timeouts.
+   *
+   * <p>Performance notice: The ReadRows protocol requires that rows are sent in ascending key
+   * order, which means that the keys are processed sequentially on the server-side, so batching
+   * allows improving throughput but not latency. Lower latencies can be achieved by sending smaller
+   * requests concurrently.
+   *
+   * <p>Sample Code:
+   *
+   * <pre>{@code
+   * try (BigtableDataClient bigtableDataClient = BigtableDataClient.create("[PROJECT]", "[INSTANCE]")) {
+   *
+   *  // Build the filter expression
+   *  Filter filter = FILTERS.chain()
+   *         .filter(FILTERS.key().regex("prefix.*"))
+   *         .filter(FILTERS.limit().cellsPerRow(10));
+   *
+   *   List<ApiFuture<Row>> rows = new ArrayList<>();
+   *
+   *   try (Batcher<ByteString, Row> batcher = bigtableDataClient.newBulkReadRowsBatcher(
+   *    "[TABLE]", filter, GrpcCallContext.createDefault().withTimeout(Duration.ofSeconds(10)))) {
+   *     for (String someValue : someCollection) {
+   *       ApiFuture<Row> rowFuture =
+   *           batcher.add(ByteString.copyFromUtf8("[ROW KEY]"));
+   *       rows.add(rowFuture);
+   *     }
+   *
+   *     // [Optional] Sends collected elements for batching asynchronously.
+   *     batcher.sendOutstanding();
+   *
+   *     // [Optional] Invokes sendOutstanding() and awaits until all pending entries are resolved.
+   *     batcher.flush();
+   *   }
+   *   // batcher.close() invokes `flush()` which will in turn invoke `sendOutstanding()` with await for
+   *   pending batches until its resolved.
+   *
+   *   List<Row> actualRows = ApiFutures.allAsList(rows).get();
+   * }
+   * }</pre>
+   */
+  public Batcher<ByteString, Row> newBulkReadRowsBatcher(
+      String tableId, @Nullable Filters.Filter filter, @Nullable GrpcCallContext ctx) {
     Query query = Query.create(tableId);
     if (filter != null) {
-      query = query.filter(filter);
+      query.filter(filter);
     }
-    return stub.newBulkReadRowsBatcher(query);
+    return stub.newBulkReadRowsBatcher(query, ctx);
   }
 
   /**

google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/EnhancedBigtableStub.java

@@ -23,6 +23,7 @@
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.core.FixedCredentialsProvider;
 import com.google.api.gax.grpc.GaxGrpcProperties;
+import com.google.api.gax.grpc.GrpcCallContext;
 import com.google.api.gax.grpc.GrpcCallSettings;
 import com.google.api.gax.grpc.GrpcRawCallableFactory;
 import com.google.api.gax.grpc.InstantiatingGrpcChannelProvider;
@@ -97,6 +98,7 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
 
 /**
  * The core client that converts method calls to RPCs.
@@ -531,10 +533,15 @@ private UnaryCallable<BulkMutation, Void> createBulkMutateRowsCallable() {
    *   <li>Split the responses using {@link MutateRowsBatchingDescriptor}.
    * </ul>
    */
-  public Batcher<RowMutationEntry, Void> newMutateRowsBatcher(@Nonnull String tableId) {
+  public Batcher<RowMutationEntry, Void> newMutateRowsBatcher(
+      @Nonnull String tableId, @Nullable GrpcCallContext ctx) {
+    UnaryCallable<BulkMutation, Void> callable = this.bulkMutateRowsCallable;
+    if (ctx != null) {
+      callable = callable.withDefaultCallContext(ctx);
+    }
     return new BatcherImpl<>(
         settings.bulkMutateRowsSettings().getBatchingDescriptor(),
-        bulkMutateRowsCallable,
+        callable,
         BulkMutation.create(tableId),
         settings.bulkMutateRowsSettings().getBatchingSettings(),
         clientContext.getExecutor(),
@@ -556,11 +563,16 @@ public Batcher<RowMutationEntry, Void> newMutateRowsBatcher(@Nonnull String tabl
    *   <li>Split the responses using {@link ReadRowsBatchingDescriptor}.
    * </ul>
    */
-  public Batcher<ByteString, Row> newBulkReadRowsBatcher(@Nonnull Query query) {
+  public Batcher<ByteString, Row> newBulkReadRowsBatcher(
+      @Nonnull Query query, @Nullable GrpcCallContext ctx) {
     Preconditions.checkNotNull(query, "query cannot be null");
+    UnaryCallable<Query, List<Row>> callable = readRowsCallable().all();
+    if (ctx != null) {
+      callable = callable.withDefaultCallContext(ctx);
+    }
     return new BatcherImpl<>(
         settings.bulkReadRowsSettings().getBatchingDescriptor(),
-        readRowsCallable().all(),
+        callable,
         query,
         settings.bulkReadRowsSettings().getBatchingSettings(),
         clientContext.getExecutor());

google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsAttemptCallable.java

@@ -176,7 +176,8 @@ public Void call() {
 
       // Configure the deadline
       ApiCallContext currentCallContext = callContext;
-      if (!externalFuture.getAttemptSettings().getRpcTimeout().isZero()) {
+      if (currentCallContext.getTimeout() == null
+          && !externalFuture.getAttemptSettings().getRpcTimeout().isZero()) {
         currentCallContext =
             currentCallContext.withTimeout(externalFuture.getAttemptSettings().getRpcTimeout());
       }

google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/BigtableDataClientFactoryTest.java

@@ -35,8 +35,11 @@
 import com.google.cloud.bigtable.data.v2.internal.NameUtil;
 import com.google.cloud.bigtable.data.v2.models.RowMutation;
 import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableList;
 import com.google.protobuf.ByteString;
 import io.grpc.Attributes;
+import io.grpc.BindableService;
+import io.grpc.ServerInterceptor;
 import io.grpc.ServerTransportFilter;
 import io.grpc.stub.StreamObserver;
 import java.io.IOException;
@@ -95,7 +98,11 @@ public void transportTerminated(Attributes transportAttrs) {
             terminateAttributes.add(transportAttrs);
           }
         };
-    serviceHelper = new FakeServiceHelper(null, transportFilter, service);
+    serviceHelper =
+        new FakeServiceHelper(
+            ImmutableList.<ServerInterceptor>of(),
+            transportFilter,
+            ImmutableList.<BindableService>of(service));
     port = serviceHelper.getPort();
     serviceHelper.start();
 

google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/BigtableDataClientTest.java

@@ -22,6 +22,7 @@
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
 import com.google.api.gax.batching.Batcher;
+import com.google.api.gax.grpc.GrpcCallContext;
 import com.google.api.gax.rpc.ResponseObserver;
 import com.google.api.gax.rpc.ServerStreamingCallable;
 import com.google.api.gax.rpc.UnaryCallable;
@@ -80,9 +81,13 @@ public void setUp() {
     Mockito.when(mockStub.bulkMutateRowsCallable()).thenReturn(mockBulkMutateRowsCallable);
     Mockito.when(mockStub.checkAndMutateRowCallable()).thenReturn(mockCheckAndMutateRowCallable);
     Mockito.when(mockStub.readModifyWriteRowCallable()).thenReturn(mockReadModifyWriteRowCallable);
-    Mockito.when(mockStub.newMutateRowsBatcher(Mockito.any(String.class)))
+    Mockito.when(
+            mockStub.newMutateRowsBatcher(
+                Mockito.any(String.class), Mockito.any(GrpcCallContext.class)))
         .thenReturn(mockBulkMutationBatcher);
-    Mockito.when(mockStub.newBulkReadRowsBatcher(Mockito.any(Query.class)))
+    Mockito.when(
+            mockStub.newBulkReadRowsBatcher(
+                Mockito.any(Query.class), Mockito.any(GrpcCallContext.class)))
         .thenReturn(mockBulkReadRowsBatcher);
   }
 
@@ -374,7 +379,8 @@ public void proxyNewBulkMutationBatcherTest() {
     ApiFuture<Void> actualRes = batcher.add(request);
     assertThat(actualRes).isSameInstanceAs(expectedResponse);
 
-    Mockito.verify(mockStub).newMutateRowsBatcher(Mockito.any(String.class));
+    Mockito.verify(mockStub)
+        .newMutateRowsBatcher(Mockito.any(String.class), Mockito.any(GrpcCallContext.class));
   }
 
   @Test
@@ -390,7 +396,8 @@ public void proxyNewBulkReadRowsTest() {
     ApiFuture<Row> actualResponse = batcher.add(request);
     assertThat(actualResponse).isSameInstanceAs(expectedResponse);
 
-    Mockito.verify(mockStub).newBulkReadRowsBatcher(Mockito.any(Query.class));
+    Mockito.verify(mockStub)
+        .newBulkReadRowsBatcher(Mockito.any(Query.class), Mockito.any(GrpcCallContext.class));
   }
 
   @Test
@@ -407,7 +414,8 @@ public void proxyNewBulkReadRowsWithFilterTest() {
     ApiFuture<Row> actualResponse = batcher.add(request);
     assertThat(actualResponse).isSameInstanceAs(expectedResponse);
 
-    Mockito.verify(mockStub).newBulkReadRowsBatcher(Mockito.any(Query.class));
+    Mockito.verify(mockStub)
+        .newBulkReadRowsBatcher(Mockito.any(Query.class), Mockito.any(GrpcCallContext.class));
   }
 
   @Test

google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/FakeServiceHelper.java

@@ -15,40 +15,43 @@
  */
 package com.google.cloud.bigtable.data.v2;
 
+import com.google.common.collect.ImmutableList;
 import io.grpc.BindableService;
 import io.grpc.Server;
 import io.grpc.ServerBuilder;
 import io.grpc.ServerInterceptor;
 import io.grpc.ServerTransportFilter;
 import java.io.IOException;
 import java.net.ServerSocket;
+import java.util.List;
 
 /** Utility class to setup a fake grpc server on a random port. */
 public class FakeServiceHelper {
   private final int port;
   private final Server server;
 
   public FakeServiceHelper(BindableService... services) throws IOException {
-    this(null, services);
+    this(ImmutableList.<ServerInterceptor>of(), null, ImmutableList.copyOf(services));
   }
 
   public FakeServiceHelper(ServerInterceptor interceptor, BindableService... services)
       throws IOException {
-    this(interceptor, null, services);
+    this(ImmutableList.of(interceptor), null, ImmutableList.copyOf(services));
   }
 
   public FakeServiceHelper(
-      ServerInterceptor interceptor,
+      List<ServerInterceptor> interceptors,
       ServerTransportFilter transportFilter,
-      BindableService... services)
+      List<BindableService> services)
       throws IOException {
     try (ServerSocket ss = new ServerSocket(0)) {
       port = ss.getLocalPort();
     }
     ServerBuilder builder = ServerBuilder.forPort(port);
-    if (interceptor != null) {
+    for (ServerInterceptor interceptor : interceptors) {
       builder = builder.intercept(interceptor);
     }
+
     if (transportFilter != null) {
       builder = builder.addTransportFilter(transportFilter);
     }