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| 1 | +/* |
| 2 | + * Copyright 2021 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.jdbc; |
| 18 | + |
| 19 | +import static com.google.common.truth.Truth.assertThat; |
| 20 | + |
| 21 | +import com.google.cloud.spanner.connection.AbstractMockServerTest; |
| 22 | +import com.google.common.base.Predicate; |
| 23 | +import com.google.protobuf.AbstractMessage; |
| 24 | +import com.google.spanner.v1.BatchCreateSessionsRequest; |
| 25 | +import java.sql.Connection; |
| 26 | +import java.sql.SQLException; |
| 27 | +import java.util.concurrent.Callable; |
| 28 | +import java.util.concurrent.CountDownLatch; |
| 29 | +import java.util.concurrent.ExecutionException; |
| 30 | +import java.util.concurrent.ExecutorService; |
| 31 | +import java.util.concurrent.Executors; |
| 32 | +import java.util.concurrent.Future; |
| 33 | +import java.util.concurrent.TimeUnit; |
| 34 | +import java.util.concurrent.TimeoutException; |
| 35 | +import org.junit.AfterClass; |
| 36 | +import org.junit.Test; |
| 37 | +import org.junit.experimental.runners.Enclosed; |
| 38 | +import org.junit.runner.RunWith; |
| 39 | + |
| 40 | +@RunWith(Enclosed.class) |
| 41 | +public class JdbcConnectionUrlTest { |
| 42 | + |
| 43 | + public static class ConnectionMinSessionsTest extends AbstractMockServerTest { |
| 44 | + @AfterClass |
| 45 | + public static void reset() { |
| 46 | + mockSpanner.reset(); |
| 47 | + } |
| 48 | + |
| 49 | + protected String getBaseUrl() { |
| 50 | + return super.getBaseUrl() + ";minSessions=1"; |
| 51 | + } |
| 52 | + |
| 53 | + @Test |
| 54 | + public void testMinSessions() throws InterruptedException, TimeoutException, SQLException { |
| 55 | + try (Connection connection = createJdbcConnection()) { |
| 56 | + mockSpanner.waitForRequestsToContain( |
| 57 | + new Predicate<AbstractMessage>() { |
| 58 | + @Override |
| 59 | + public boolean apply(AbstractMessage input) { |
| 60 | + return input instanceof BatchCreateSessionsRequest |
| 61 | + && ((BatchCreateSessionsRequest) input).getSessionCount() == 1; |
| 62 | + } |
| 63 | + }, |
| 64 | + 5000L); |
| 65 | + } |
| 66 | + } |
| 67 | + } |
| 68 | + |
| 69 | + public static class ConnectionMaxSessionsTest extends AbstractMockServerTest { |
| 70 | + |
| 71 | + @AfterClass |
| 72 | + public static void reset() { |
| 73 | + mockSpanner.reset(); |
| 74 | + } |
| 75 | + |
| 76 | + protected String getBaseUrl() { |
| 77 | + return super.getBaseUrl() + ";maxSessions=1"; |
| 78 | + } |
| 79 | + |
| 80 | + @Test |
| 81 | + public void testMaxSessions() |
| 82 | + throws InterruptedException, TimeoutException, ExecutionException, SQLException { |
| 83 | + ExecutorService executor1 = Executors.newSingleThreadExecutor(); |
| 84 | + ExecutorService executor2 = Executors.newSingleThreadExecutor(); |
| 85 | + |
| 86 | + try (Connection connection1 = createJdbcConnection(); |
| 87 | + Connection connection2 = createJdbcConnection()) { |
| 88 | + final CountDownLatch latch = new CountDownLatch(1); |
| 89 | + Future<Void> fut1 = |
| 90 | + executor1.submit( |
| 91 | + new Callable<Void>() { |
| 92 | + @Override |
| 93 | + public Void call() throws SQLException, InterruptedException { |
| 94 | + latch.await(5L, TimeUnit.SECONDS); |
| 95 | + connection1.createStatement().executeUpdate(INSERT_STATEMENT.getSql()); |
| 96 | + connection1.commit(); |
| 97 | + return null; |
| 98 | + } |
| 99 | + }); |
| 100 | + Future<Void> fut2 = |
| 101 | + executor2.submit( |
| 102 | + new Callable<Void>() { |
| 103 | + @Override |
| 104 | + public Void call() throws SQLException { |
| 105 | + latch.countDown(); |
| 106 | + connection2.createStatement().executeUpdate(INSERT_STATEMENT.getSql()); |
| 107 | + connection2.commit(); |
| 108 | + return null; |
| 109 | + } |
| 110 | + }); |
| 111 | + // Wait until both finishes. |
| 112 | + fut1.get(5L, TimeUnit.SECONDS); |
| 113 | + fut2.get(5L, TimeUnit.SECONDS); |
| 114 | + } finally { |
| 115 | + executor1.shutdown(); |
| 116 | + executor2.shutdown(); |
| 117 | + } |
| 118 | + assertThat(mockSpanner.numSessionsCreated()).isEqualTo(1); |
| 119 | + } |
| 120 | + } |
| 121 | +} |
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