Add Apache Pulsar Support (#713)

* Add Apache Pulsar Support

* Reafctor container class

* Change property configuration

* Remove unused imports

Author: aahmed-se

core/src/main/java/org/testcontainers/utility/TestcontainersConfiguration.java

@@ -58,6 +58,10 @@ public String getKafkaImage() {
         return (String) properties.getOrDefault("kafka.container.image", "confluentinc/cp-kafka");
     }
 
+    public String getPulsarImage() {
+        return (String) properties.getOrDefault("pulsar.container.image", "apachepulsar/pulsar");
+    }
+
     public boolean isDisableChecks() {
         return Boolean.parseBoolean((String) properties.getOrDefault("checks.disable", "false"));
     }

modules/pulsar/build.gradle

@@ -0,0 +1,8 @@
+description = "Testcontainers :: Pulsar"
+
+dependencies {
+    compile project(':testcontainers')
+
+    testCompile group: 'org.apache.pulsar', name: 'pulsar-client', version: '2.0.0-rc1-incubating'
+    testCompile group: 'org.assertj', name: 'assertj-core', version: '3.10.0'
+}

modules/pulsar/src/main/java/org/testcontainers/containers/PulsarContainer.java

@@ -0,0 +1,33 @@
+package org.testcontainers.containers;
+
+import org.testcontainers.containers.wait.strategy.Wait;
+import org.testcontainers.utility.TestcontainersConfiguration;
+
+/**
+ * This container wraps Apache pulsar running in stanalone mode
+ */
+public class PulsarContainer extends GenericContainer<PulsarContainer> {
+
+    public static final int PULSAR_PORT = 6850;
+
+    public PulsarContainer() {
+        this("2.0.0-rc1-incubating");
+    }
+
+    public PulsarContainer(String pulsarVersion) {
+        super(TestcontainersConfiguration.getInstance().getPulsarImage() + ":" + pulsarVersion);
+        withExposedPorts(PULSAR_PORT);
+        withCommand("/bin/bash", "-c", "" +
+            "servicePort=6850 webServicePort=8280 webServicePortTls=8643 bin/apply-config-from-env.py conf/proxy.conf && " +
+            "bin/pulsar standalone & " +
+            "bin/pulsar proxy --zookeeper-servers localhost:2181 --global-zookeeper-servers localhost:2181"
+        );
+
+        waitingFor(Wait.forLogMessage(".*messaging service is ready.*\\s", 1));
+    }
+
+    public String getPulsarBrokerUrl() {
+        return String.format("pulsar://%s:%s", this.getContainerIpAddress(), this.getFirstMappedPort());
+    }
+
+}

modules/pulsar/src/test/java/org/testcontainers/containers/PulsarContainerTest.java

@@ -0,0 +1,50 @@
+package org.testcontainers.containers;
+
+import org.apache.pulsar.client.api.Consumer;
+import org.apache.pulsar.client.api.Message;
+import org.apache.pulsar.client.api.Producer;
+import org.apache.pulsar.client.api.PulsarClient;
+import org.junit.Test;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class PulsarContainerTest {
+
+    public static final String TEST_TOPIC = "test_topic";
+
+    @Test
+    public void testUsage() throws Exception {
+        try (PulsarContainer pulsar = new PulsarContainer()) {
+            pulsar.start();
+            testPulsarFunctionality(pulsar.getPulsarBrokerUrl());
+        }
+    }
+
+    protected void testPulsarFunctionality(String pulsarBrokerUrl) throws Exception {
+
+        try (
+            PulsarClient client = PulsarClient.builder()
+                .serviceUrl(pulsarBrokerUrl)
+                .build();
+            Consumer consumer = client.newConsumer()
+                .topic(TEST_TOPIC)
+                .subscriptionName("test-subs")
+                .subscribe();
+            Producer<byte[]> producer = client.newProducer()
+                .topic(TEST_TOPIC)
+                .create()
+        ) {
+
+            producer.send("test containers".getBytes());
+            CompletableFuture<Message> future = consumer.receiveAsync();
+            Message message = future.get(5, TimeUnit.SECONDS);
+
+            assertThat(new String(message.getData()))
+                .isEqualTo("test containers");
+        }
+    }
+
+}

modules/pulsar/src/test/resources/logback-test.xml

@@ -0,0 +1,18 @@
+<configuration>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <!-- encoders are assigned the type
+             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} %-5level %logger - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT"/>
+    </root>
+
+    <logger name="org.testcontainers" level="DEBUG"/>
+    <logger name="org.testcontainers.shaded" level="WARN"/>
+
+</configuration>