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| 1 | +/* |
| 2 | + * Copyright 2026 Google LLC |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | + |
| 17 | +package com.google.cloud.spanner; |
| 18 | + |
| 19 | +import static org.junit.Assert.assertEquals; |
| 20 | + |
| 21 | +import com.google.cloud.NoCredentials; |
| 22 | +import com.google.cloud.spanner.MockSpannerServiceImpl.StatementResult; |
| 23 | +import com.google.cloud.spanner.connection.AbstractMockServerTest; |
| 24 | +import com.google.cloud.spanner.connection.RandomResultSetGenerator; |
| 25 | +import com.google.common.util.concurrent.Futures; |
| 26 | +import com.google.common.util.concurrent.ListenableFuture; |
| 27 | +import com.google.common.util.concurrent.ListeningExecutorService; |
| 28 | +import com.google.common.util.concurrent.MoreExecutors; |
| 29 | +import io.grpc.ManagedChannelBuilder; |
| 30 | +import java.util.ArrayList; |
| 31 | +import java.util.List; |
| 32 | +import java.util.concurrent.Executors; |
| 33 | +import java.util.concurrent.ThreadLocalRandom; |
| 34 | +import org.junit.AfterClass; |
| 35 | +import org.junit.BeforeClass; |
| 36 | +import org.junit.Test; |
| 37 | +import org.junit.runner.RunWith; |
| 38 | +import org.junit.runners.JUnit4; |
| 39 | + |
| 40 | +@RunWith(JUnit4.class) |
| 41 | +public class SpanFEBypassTest extends AbstractMockServerTest { |
| 42 | + private static final Statement SELECT_RANDOM_STATEMENT = Statement.of("select * from random"); |
| 43 | + private static final int RANDOM_RESULT_ROW_COUNT = 20; |
| 44 | + private static Spanner spanner; |
| 45 | + private static DatabaseClient client; |
| 46 | + |
| 47 | + @BeforeClass |
| 48 | + public static void enableLocationApiAndSetupClient() { |
| 49 | + SpannerOptions.useEnvironment( |
| 50 | + new SpannerOptions.SpannerEnvironment() { |
| 51 | + @Override |
| 52 | + public boolean isEnableLocationApi() { |
| 53 | + return true; |
| 54 | + } |
| 55 | + }); |
| 56 | + spanner = |
| 57 | + SpannerOptions.newBuilder() |
| 58 | + .setProjectId("my-project") |
| 59 | + .setHost(String.format("http://localhost:%d", getPort())) |
| 60 | + .setChannelConfigurator(ManagedChannelBuilder::usePlaintext) |
| 61 | + .setCredentials(NoCredentials.getInstance()) |
| 62 | + .build() |
| 63 | + .getService(); |
| 64 | + client = spanner.getDatabaseClient(DatabaseId.of("my-project", "my-instance", "my-database")); |
| 65 | + |
| 66 | + RandomResultSetGenerator generator = new RandomResultSetGenerator(RANDOM_RESULT_ROW_COUNT); |
| 67 | + mockSpanner.putStatementResult( |
| 68 | + StatementResult.query(SELECT_RANDOM_STATEMENT, generator.generate())); |
| 69 | + } |
| 70 | + |
| 71 | + @AfterClass |
| 72 | + public static void cleanup() { |
| 73 | + SpannerOptions.useDefaultEnvironment(); |
| 74 | + if (spanner != null) { |
| 75 | + spanner.close(); |
| 76 | + } |
| 77 | + } |
| 78 | + |
| 79 | + @Test |
| 80 | + public void testSingleQuery() { |
| 81 | + int rowCount = 0; |
| 82 | + try (ResultSet resultSet = client.singleUse().executeQuery(SELECT_RANDOM_STATEMENT)) { |
| 83 | + while (resultSet.next()) { |
| 84 | + rowCount++; |
| 85 | + } |
| 86 | + } |
| 87 | + assertEquals(RANDOM_RESULT_ROW_COUNT, rowCount); |
| 88 | + } |
| 89 | + |
| 90 | + @Test |
| 91 | + public void testParallelQueries() throws Exception { |
| 92 | + int numThreads = 10; |
| 93 | + ListeningExecutorService executor = |
| 94 | + MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(numThreads)); |
| 95 | + List<ListenableFuture<Void>> results = new ArrayList<>(); |
| 96 | + for (int i = 0; i < numThreads; i++) { |
| 97 | + results.add( |
| 98 | + executor.submit( |
| 99 | + () -> { |
| 100 | + try (ResultSet resultSet = |
| 101 | + client.singleUse().executeQuery(SELECT_RANDOM_STATEMENT)) { |
| 102 | + while (resultSet.next()) { |
| 103 | + // Randomly stop consuming results somewhere halfway the results (sometimes). |
| 104 | + if (ThreadLocalRandom.current().nextInt(RANDOM_RESULT_ROW_COUNT * 2) == 5) { |
| 105 | + break; |
| 106 | + } |
| 107 | + } |
| 108 | + } |
| 109 | + return null; |
| 110 | + })); |
| 111 | + } |
| 112 | + executor.shutdown(); |
| 113 | + Futures.allAsList(results).get(); |
| 114 | + } |
| 115 | + |
| 116 | + @Test |
| 117 | + public void testSingleReadWriteTransaction() { |
| 118 | + client.readWriteTransaction().run(transaction -> transaction.executeUpdate(INSERT_STATEMENT)); |
| 119 | + } |
| 120 | + |
| 121 | + @Test |
| 122 | + public void testParallelReadWriteTransactions() throws Exception { |
| 123 | + int numThreads = 10; |
| 124 | + ListeningExecutorService executor = |
| 125 | + MoreExecutors.listeningDecorator(Executors.newFixedThreadPool(numThreads)); |
| 126 | + List<ListenableFuture<Void>> results = new ArrayList<>(); |
| 127 | + for (int i = 0; i < numThreads; i++) { |
| 128 | + results.add( |
| 129 | + executor.submit( |
| 130 | + () -> { |
| 131 | + client |
| 132 | + .readWriteTransaction() |
| 133 | + .run(transaction -> transaction.executeUpdate(INSERT_STATEMENT)); |
| 134 | + return null; |
| 135 | + })); |
| 136 | + } |
| 137 | + executor.shutdown(); |
| 138 | + Futures.allAsList(results).get(); |
| 139 | + } |
| 140 | +} |
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