Add easy cache creation and documentation

src/main/java/de/rpr/testcontainers/infinispan/InfinispanContainer.java

@@ -1,27 +1,44 @@
 package de.rpr.testcontainers.infinispan;
 
 import com.github.dockerjava.api.command.InspectContainerResponse;
-import org.apache.commons.lang.StringUtils;
 import org.infinispan.client.hotrod.ProtocolVersion;
 import org.infinispan.client.hotrod.RemoteCacheManager;
 import org.infinispan.client.hotrod.configuration.ConfigurationBuilder;
 import org.junit.runner.Description;
 import org.testcontainers.containers.GenericContainer;
 import org.testcontainers.containers.wait.LogMessageWaitStrategy;
-import org.testcontainers.shaded.io.netty.util.internal.StringUtil;
 
 import java.time.Duration;
 import java.util.*;
 
 import static java.time.temporal.ChronoUnit.SECONDS;
 
+/**
+ * An implementation of the {@link org.testcontainers.containers.GenericContainer} class that can be
+ * used to easily instantiate an Infinispan server for integration tests.
+ *
+ * @param <SELF>
+ */
 @SuppressWarnings("ALL")
 public class InfinispanContainer<SELF extends InfinispanContainer<SELF>> extends GenericContainer<SELF> {
 
   private static final String IMAGE_NAME = "jboss/infinispan-server";
   public static final String STANDALONE_MODE_CMD = "standalone";
 
-  private static Set<ProtocolVersion> incompatibleProtocolVersions = new HashSet<>();
+  /*
+   * An enumeration of the endpoints provided by Infinispan, that this container provides access to.
+   */
+  private enum InfinispanEndpoints {
+    HOTROD(11222);
+
+    private final int protocolPort;
+
+    private InfinispanEndpoints(final int port) {
+      this.protocolPort = port;
+    }
+  }
+
+  private static final Set<ProtocolVersion> incompatibleProtocolVersions = new HashSet<>();
 
   static {
     incompatibleProtocolVersions.add(ProtocolVersion.PROTOCOL_VERSION_10);
@@ -35,18 +52,26 @@ public class InfinispanContainer<SELF extends InfinispanContainer<SELF>> extends
 
   private RemoteCacheManager cacheManager;
 
+  /**
+   * Construct an instance using the latest Infinispan image version.
+   */
   public InfinispanContainer() {
     this(IMAGE_NAME + ":latest");
   }
 
+  /**
+   * Construct n instance using the specifice image name.
+   *
+   * @param imageName The image name, must contain a version reference
+   */
   public InfinispanContainer(final String imageName) {
     super(imageName);
 
     this.withCommand(STANDALONE_MODE_CMD);
+    withExposedPorts(Arrays.stream(InfinispanEndpoints.values()).map(endpoint -> endpoint.protocolPort).toArray(Integer[]::new));
 
     this.waitStrategy = new LogMessageWaitStrategy()
         .withRegEx(".*Infinispan Server.*started in.*\\s")
-        .withTimes(2)
         .withStartupTimeout(Duration.of(20, SECONDS));
   }
 
@@ -91,37 +116,51 @@ public class InfinispanContainer<SELF extends InfinispanContainer<SELF>> extends
   }
 
   public InfinispanContainer withProtocolVersion(final ProtocolVersion protocolVersion) {
-    if (incompatibleProtocolVersions.contains(protocolVersion)) {
-      throw new IllegalArgumentException("You have to use a Hotrod protocol version of 2.0 at least. 1.x can't create caches through the API.");
-    }
     this.protocolVersion = protocolVersion;
     return this;
   }
 
-  public InfinispanContainer withCaches(final Collection<String> cacheNames) {
-    this.cacheNames = cacheNames;
-    return this;
-  }
-
+  /**
+   * Defines caches that should be created after the container has started.
+   *
+   * @param cacheNames An array of cache names
+   * @return The container itself
+   */
   public InfinispanContainer withCaches(final String... cacheNames) {
     return withCaches(Arrays.asList(cacheNames));
   }
 
+  /**
+   * Defines caches that should be created after the container has started.
+   *
+   * @param cacheNames A collection of cache names
+   * @return The container itself
+   */
+  public InfinispanContainer withCaches(final Collection<String> cacheNames) {
+    if (incompatibleProtocolVersions.contains(protocolVersion)) {
+      throw new IllegalArgumentException(
+          "You have to use a Hotrod protocol version of 2.0 at least. 1.x can't create caches through the API. " +
+              "You can still map a configuration file into the container using '.withClasspathResourceMapping()'");
+    }
+    this.cacheNames = cacheNames;
+    return this;
+  }
+
   @Override
   protected void containerIsStarted(final InspectContainerResponse containerInfo) {
     cacheManager = new RemoteCacheManager(new ConfigurationBuilder()
-        .addServers(getServerAddress())
+        .addServers(getHotrodEndpointConnectionString())
         .version(getProtocolVersion())
         .build());
 
-    this.cacheNames.forEach(cacheName -> {
-      cacheManager.administration().createCache(cacheName, null);
-    });
+    this.cacheNames.forEach(cacheName -> cacheManager.administration().createCache(cacheName, null));
   }
 
   @Override
   protected void finished(final Description description) {
-    cacheManager.stop();
+    if (cacheManager != null) {
+      cacheManager.stop();
+    }
     super.finished(description);
   }
 
@@ -129,10 +168,20 @@ public class InfinispanContainer<SELF extends InfinispanContainer<SELF>> extends
     return protocolVersion != null ? protocolVersion : ProtocolVersion.PROTOCOL_VERSION_26;
   }
 
-  public String getServerAddress() {
-    return getContainerIpAddress() + ":" + getMappedPort(11222);
+  /**
+   * Retrieve the Hotrod endpoint address used to connect to the Infinispan instance inside the container.
+   *
+   * @return A String of the format [ipaddress]:[port]
+   */
+  public String getHotrodEndpointConnectionString() {
+    return getContainerIpAddress() + ":" + getMappedPort(InfinispanEndpoints.HOTROD.protocolPort);
   }
 
+  /**
+   * Retrieve a preconfigured {@link org.infinispan.client.hotrod.RemoteCacheManager}.
+   *
+   * @return A cacheManager
+   */
   public RemoteCacheManager getCacheManager() {
     return cacheManager;
   }

src/test/java/InfinispanContainerIntegrationTest.java

@@ -8,8 +8,7 @@ import static org.junit.Assert.assertNotNull;
 public class InfinispanContainerIntegrationTest {
 
   @ClassRule
-  public static InfinispanContainer infinispan =
-      new InfinispanContainer("9.1.3.Final")
+  public static InfinispanContainer infinispan = new InfinispanContainer()
           .withProtocolVersion(ProtocolVersion.PROTOCOL_VERSION_26)
           .withCaches("testCache");