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* Add Kafka module * Replace AmbassadorContainer with SocatContainer in DockerComposeContainer * make it possible to use KafkaContainer with external Zookeeper * fix typo * fix Kafka tests * Add to CHANGELOG.md, name SocatContainer, add listeners explanation comment to KafkaContainer * listen on alias * rename myNetworkAlias -> networkAlias
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42 changes: 42 additions & 0 deletions
42
core/src/main/java/org/testcontainers/containers/SocatContainer.java
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| package org.testcontainers.containers; | ||
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| import org.testcontainers.utility.Base58; | ||
| import org.testcontainers.utility.TestcontainersConfiguration; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.stream.Collectors; | ||
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| /** | ||
| * A socat container is used as a TCP proxy, enabling any TCP port of another container to be exposed | ||
| * publicly, even if that container does not make the port public itself. | ||
| */ | ||
| public class SocatContainer extends GenericContainer<SocatContainer> { | ||
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| private final Map<Integer, String> targets = new HashMap<>(); | ||
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| public SocatContainer() { | ||
| super(TestcontainersConfiguration.getInstance().getSocatContainerImage()); | ||
| withCreateContainerCmdModifier(it -> it.withEntrypoint("/bin/sh")); | ||
| withCreateContainerCmdModifier(it -> it.withName("testcontainers-socat-" + Base58.randomString(8))); | ||
| } | ||
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| public SocatContainer withTarget(int exposedPort, String host) { | ||
| return withTarget(exposedPort, host, exposedPort); | ||
| } | ||
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| public SocatContainer withTarget(int exposedPort, String host, int internalPort) { | ||
| addExposedPort(exposedPort); | ||
| targets.put(exposedPort, String.format("%s:%s", host, internalPort)); | ||
| return self(); | ||
| } | ||
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| @Override | ||
| protected void configure() { | ||
| withCommand("-c", | ||
| targets.entrySet().stream() | ||
| .map(entry -> "socat TCP-LISTEN:" + entry.getKey() + ",fork,reuseaddr TCP:" + entry.getValue()) | ||
| .collect(Collectors.joining(" & ")) | ||
| ); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,45 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | ||
| xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
| <modelVersion>4.0.0</modelVersion> | ||
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| <parent> | ||
| <groupId>org.testcontainers</groupId> | ||
| <artifactId>testcontainers-parent</artifactId> | ||
| <version>0-SNAPSHOT</version> | ||
| <relativePath>../../pom.xml</relativePath> | ||
| </parent> | ||
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| <artifactId>kafka</artifactId> | ||
| <name>TestContainers :: Apache Kafka</name> | ||
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| <dependencies> | ||
| <dependency> | ||
| <groupId>${project.groupId}</groupId> | ||
| <artifactId>testcontainers</artifactId> | ||
| <version>${project.version}</version> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>org.apache.kafka</groupId> | ||
| <artifactId>kafka-clients</artifactId> | ||
| <version>1.0.0</version> | ||
| <scope>test</scope> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>org.assertj</groupId> | ||
| <artifactId>assertj-core</artifactId> | ||
| <version>3.8.0</version> | ||
| <scope>test</scope> | ||
| </dependency> | ||
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| <dependency> | ||
| <groupId>com.google.guava</groupId> | ||
| <artifactId>guava</artifactId> | ||
| <version>23.0</version> | ||
| <scope>test</scope> | ||
| </dependency> | ||
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| </dependencies> | ||
| </project> |
82 changes: 82 additions & 0 deletions
82
modules/kafka/src/main/java/org.testcontainers.containers/KafkaContainer.java
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| package org.testcontainers.containers; | ||
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| import org.testcontainers.utility.Base58; | ||
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| import java.util.stream.Stream; | ||
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| public class KafkaContainer extends GenericContainer<KafkaContainer> { | ||
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| public static final int KAFKA_PORT = 9092; | ||
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| public static final int ZOOKEEPER_PORT = 2181; | ||
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| protected String externalZookeeperConnect = null; | ||
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| protected SocatContainer proxy; | ||
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| public KafkaContainer() { | ||
| this("4.0.0"); | ||
| } | ||
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| public KafkaContainer(String confluentPlatformVersion) { | ||
| super("confluentinc/cp-kafka:" + confluentPlatformVersion); | ||
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| withNetwork(Network.newNetwork()); | ||
| String networkAlias = "kafka-" + Base58.randomString(6); | ||
| withNetworkAliases(networkAlias); | ||
| withExposedPorts(KAFKA_PORT); | ||
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| // Use two listeners with different names, it will force Kafka to communicate with itself via internal | ||
| // listener when KAFKA_INTER_BROKER_LISTENER_NAME is set, otherwise Kafka will try to use the advertised listener | ||
| withEnv("KAFKA_LISTENERS", "PLAINTEXT://0.0.0.0:9092,BROKER://" + networkAlias + ":9093"); | ||
| withEnv("KAFKA_LISTENER_SECURITY_PROTOCOL_MAP", "BROKER:PLAINTEXT,PLAINTEXT:PLAINTEXT"); | ||
| withEnv("KAFKA_INTER_BROKER_LISTENER_NAME", "BROKER"); | ||
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| withEnv("KAFKA_BROKER_ID", "1"); | ||
| withEnv("KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR", "1"); | ||
| withEnv("KAFKA_OFFSETS_TOPIC_NUM_PARTITIONS", "1"); | ||
| withEnv("KAFKA_LOG_FLUSH_INTERVAL_MESSAGES", Long.MAX_VALUE + ""); | ||
| } | ||
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| public KafkaContainer withEmbeddedZookeeper() { | ||
| externalZookeeperConnect = null; | ||
| return self(); | ||
| } | ||
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| public KafkaContainer withExternalZookeeper(String connectString) { | ||
| externalZookeeperConnect = connectString; | ||
| return self(); | ||
| } | ||
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| public String getBootstrapServers() { | ||
| return String.format("PLAINTEXT://%s:%s", proxy.getContainerIpAddress(), proxy.getFirstMappedPort()); | ||
| } | ||
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| @Override | ||
| public void start() { | ||
| String networkAlias = getNetworkAliases().get(0); | ||
| proxy = new SocatContainer() | ||
| .withNetwork(getNetwork()) | ||
| .withTarget(9092, networkAlias) | ||
| .withTarget(2181, networkAlias); | ||
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| proxy.start(); | ||
| withEnv("KAFKA_ADVERTISED_LISTENERS", "BROKER://" + networkAlias + ":9093,PLAINTEXT://" + proxy.getContainerIpAddress() + ":" + proxy.getFirstMappedPort()); | ||
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| if (externalZookeeperConnect != null) { | ||
| withEnv("KAFKA_ZOOKEEPER_CONNECT", externalZookeeperConnect); | ||
| } else { | ||
| addExposedPort(ZOOKEEPER_PORT); | ||
| withEnv("KAFKA_ZOOKEEPER_CONNECT", "localhost:2181"); | ||
| withClasspathResourceMapping("tc-zookeeper.properties", "/zookeeper.properties", BindMode.READ_ONLY); | ||
| withCommand("sh", "-c", "zookeeper-server-start /zookeeper.properties & /etc/confluent/docker/run"); | ||
| } | ||
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| super.start(); | ||
| } | ||
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| @Override | ||
| public void stop() { | ||
| Stream.<Runnable>of(super::stop, proxy::stop).parallel().forEach(Runnable::run); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,3 @@ | ||
| clientPort=2181 | ||
| dataDir=/var/lib/zookeeper/data | ||
| dataLogDir=/var/lib/zookeeper/log |
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