xmemcached with TestContainers

[Sean Carroll]

Has anyone had success setting up memcached with TestContainers? There is no official memcached TestContainer so I've attempted to use the GenericContainer but haven't had much success

I've been attempting to use the `GenericContainer` but have been unsuccessful. I'm using `testcontainers:1.10.1` with `xmemcached:2.4.5`

I have a class rule

@ClassRule
public static GenericContainer memcached = new GenericContainer("memcached:alpine")
 .withExposedPorts(11211);

with the following setup

List<InetSocketAddress> SERVERS = Collections.unmodifiableList(Collections.singletonList(new InetSocketAddress("localhost", 11211)));
XMemcachedClientBuilder builder = new XMemcachedClientBuilder(SERVERS);
MemcachedClient memcachedClient = builder.build();

and when calling memcachedClient.get(key) a `connection refused` with the following stack trace

2018-11-11 22:43:04,670 INFO  🐳 [memcached:alpine] - Creating container for image: memcached:alpine

2018-11-11 22:43:04,711 INFO  org.testcontainers.utility.RegistryAuthLocator - Credentials not found for host (index.docker.io) when using credential helper/store (docker-credential-osxkeychain)

2018-11-11 22:43:04,875 INFO  🐳 [memcached:alpine] - Starting container with ID: aa3b1b10ed8f6c85813f7f61a273e5827964fbcfc9f6b63c8120d66b2994da32

2018-11-11 22:43:05,487 INFO  🐳 [memcached:alpine] - Container memcached:alpine is starting: aa3b1b10ed8f6c85813f7f61a273e5827964fbcfc9f6b63c8120d66b2994da32

2018-11-11 22:43:05,960 INFO  🐳 [memcached:alpine] - Container memcached:alpine started

2018-11-11 22:43:14,644 INFO  net.rubyeye.xmemcached.XMemcachedClient - XMemcachedClient is using Text protocol

2018-11-11 22:43:14,817 INFO  com.google.code.yanf4j.nio.impl.SelectorManager - Creating 4 reactors...

2018-11-11 22:43:14,833 INFO  com.google.code.yanf4j.core.impl.AbstractController - The Controller started at localhost/127.0.0.1:0 ...

2018-11-11 22:43:14,867 ERROR net.rubyeye.xmemcached.XMemcachedClient - connect to 127.0.0.1:11211 error

java.util.concurrent.ExecutionException: java.net.ConnectException: Connection refused

at com.google.code.yanf4j.core.impl.FutureImpl.get(FutureImpl.java:138)

at net.rubyeye.xmemcached.XMemcachedClient.connect(XMemcachedClient.java:552)

at net.rubyeye.xmemcached.XMemcachedClient.<init>(XMemcachedClient.java:813)

at net.rubyeye.xmemcached.XMemcachedClientBuilder.build(XMemcachedClientBuilder.java:324)

[Sean Carroll]

TestContainers uses random ports and I needed to use memcached.getMappedPort(11211)