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Fix parallel startup of testcontainers
Update `TestcontainersLifecycleBeanPostProcessor` so that containers can actually be started in parallel. Prior to this commit, `initializeStartables` would collect beans and in the process trigger the `postProcessAfterInitialization` method on each bean. This would see that `startablesInitialized` was `true` and call `startableBean.start` directly. The result of this was that beans were actually started sequentially and when the `start` method was finally called it had nothing to do. The updated code uses an enum rather than a boolean so that the `postProcessAfterInitialization` method no longer attempts to start beans unless `initializeStartables` has finished. Fixes gh-38831
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@ -21,6 +21,7 @@ import java.util.LinkedHashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.concurrent.atomic.AtomicReference;
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import java.util.stream.Collectors;
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import org.apache.commons.logging.Log;
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@ -63,7 +64,7 @@ class TestcontainersLifecycleBeanPostProcessor implements DestructionAwareBeanPo
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private final TestcontainersStartup startup;
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private final AtomicBoolean startablesInitialized = new AtomicBoolean();
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private final AtomicReference<Startables> startables = new AtomicReference<>(Startables.UNSTARTED);
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private final AtomicBoolean containersInitialized = new AtomicBoolean();
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@ -79,10 +80,11 @@ class TestcontainersLifecycleBeanPostProcessor implements DestructionAwareBeanPo
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initializeContainers();
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}
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if (bean instanceof Startable startableBean) {
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if (this.startablesInitialized.compareAndSet(false, true)) {
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if (this.startables.compareAndExchange(Startables.UNSTARTED, Startables.STARTING) == Startables.UNSTARTED) {
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initializeStartables(startableBean, beanName);
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}
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else {
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else if (this.startables.get() == Startables.STARTED) {
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logger.trace(LogMessage.format("Starting container %s", beanName));
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startableBean.start();
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}
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}
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@ -90,17 +92,21 @@ class TestcontainersLifecycleBeanPostProcessor implements DestructionAwareBeanPo
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}
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private void initializeStartables(Startable startableBean, String startableBeanName) {
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logger.trace(LogMessage.format("Initializing startables"));
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List<String> beanNames = new ArrayList<>(
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List.of(this.beanFactory.getBeanNamesForType(Startable.class, false, false)));
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beanNames.remove(startableBeanName);
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List<Object> beans = getBeans(beanNames);
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if (beans == null) {
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this.startablesInitialized.set(false);
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logger.trace(LogMessage.format("Failed to obtain startables %s", beanNames));
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this.startables.set(Startables.UNSTARTED);
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return;
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}
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beanNames.add(startableBeanName);
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beans.add(startableBean);
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logger.trace(LogMessage.format("Starting startables %s", beanNames));
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start(beans);
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this.startables.set(Startables.STARTED);
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if (!beanNames.isEmpty()) {
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logger.debug(LogMessage.format("Initialized and started startable beans '%s'", beanNames));
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}
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@ -115,8 +121,14 @@ class TestcontainersLifecycleBeanPostProcessor implements DestructionAwareBeanPo
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}
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private void initializeContainers() {
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logger.trace("Initializing containers");
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List<String> beanNames = List.of(this.beanFactory.getBeanNamesForType(ContainerState.class, false, false));
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if (getBeans(beanNames) == null) {
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List<Object> beans = getBeans(beanNames);
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if (beans != null) {
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logger.trace(LogMessage.format("Initialized containers %s", beanNames));
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}
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else {
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logger.trace(LogMessage.format("Failed to initialize containers %s", beanNames));
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this.containersInitialized.set(false);
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}
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}
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@ -164,4 +176,10 @@ class TestcontainersLifecycleBeanPostProcessor implements DestructionAwareBeanPo
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return (bean instanceof GenericContainer<?> container) && container.isShouldBeReused();
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}
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enum Startables {
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UNSTARTED, STARTING, STARTED
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}
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}
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@ -0,0 +1,75 @@
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/*
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* Copyright 2012-2023 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.testcontainers.lifecycle;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.extension.ExtendWith;
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import org.testcontainers.containers.PostgreSQLContainer;
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import org.springframework.boot.test.system.CapturedOutput;
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import org.springframework.boot.test.system.OutputCaptureExtension;
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import org.springframework.boot.testcontainers.lifecycle.TestContainersParallelStartupIntegrationTests.ContainerConfig;
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import org.springframework.boot.testsupport.testcontainers.DisabledIfDockerUnavailable;
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import org.springframework.boot.testsupport.testcontainers.DockerImageNames;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.test.annotation.DirtiesContext;
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import org.springframework.test.context.ContextConfiguration;
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import org.springframework.test.context.TestPropertySource;
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import org.springframework.test.context.junit.jupiter.SpringExtension;
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import static org.assertj.core.api.Assertions.assertThat;
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/**
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* Integration test for parallel startup.
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*
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* @author Phillip Webb
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*/
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@ExtendWith(SpringExtension.class)
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@ContextConfiguration(classes = ContainerConfig.class)
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@TestPropertySource(properties = "spring.testcontainers.beans.startup=parallel")
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@DirtiesContext
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@DisabledIfDockerUnavailable
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@ExtendWith(OutputCaptureExtension.class)
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public class TestContainersParallelStartupIntegrationTests {
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@Test
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void startsInParallel(CapturedOutput out) {
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assertThat(out).contains("-lifecycle-0").contains("-lifecycle-1").contains("-lifecycle-2");
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}
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@Configuration(proxyBeanMethods = false)
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static class ContainerConfig {
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@Bean
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static PostgreSQLContainer<?> container1() {
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return new PostgreSQLContainer<>(DockerImageNames.postgresql());
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}
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@Bean
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static PostgreSQLContainer<?> container2() {
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return new PostgreSQLContainer<>(DockerImageNames.postgresql());
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}
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@Bean
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static PostgreSQLContainer<?> container3() {
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return new PostgreSQLContainer<>(DockerImageNames.postgresql());
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}
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}
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}
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