Elasticsearch 6.2 start a localhost http node in unit test - unit-testing

Question

My goal is to start a localhost elasticsearch node in my junit test, so I can index some docs and also test search queries through high level rest client(e.g. making http calls to localhost ES node). I'm using Elasticsearch 6.2.
Here is the code I tried
String clusterName = "test";
Settings settings = Settings.builder()
.put("path.home", ES_WORKING_DIR)
.build();
new Node(settings).start();
and this is the error message I got..
java.lang.IllegalStateException: Unsupported transport.type []
at __randomizedtesting.SeedInfo.seed([74752622FDACDD5:AB9FD863FD5A2A5F]:0)
at org.elasticsearch.common.network.NetworkModule.getTransportSupplier(NetworkModule.java:212)
at org.elasticsearch.node.Node.<init>(Node.java:427)
at org.elasticsearch.node.Node.<init>(Node.java:246)
at org.elasticsearch.node.Node.<init>(Node.java:242)
Basically, I'm not sure what parameters to set in Settings.
Thanks in advance.

Answer 1

These are no longer supported by elastic, but they work for Junit test purposes
I have the following
For 5.6.7
Settings.Builder nodeSettings = Settings.builder()
.put("cluster.name", "my-integration-test")
.put("http.enabled", "true")
.put("path.data", dataDirectory)
.put("path.home", "/")
.put("transport.type", "netty4")
.put("network.host", "_local_")
.put("transport.tcp.port", "19200-19400")
.put("http.port", "19200-19400")
.put("discovery.type", "single-node");
LOG.info("Starting up embedded Elasticsearch");
node = new LocalNode(nodeSettings.build(), Arrays.asList(Netty4Plugin.class,
ReindexPlugin.class));
node.start();
For elastic 6.8.3
Settings.Builder nodeSettings = Settings.builder()
.put("cluster.name", "integration-test")
.put("node.name", "node-test")
.put("path.data", dataDirectory)
.put("path.home", "/")
.put("transport.type", "netty4")
.put("network.host", "127.0.0.1")
.put("http.port", "19200");
LOG.info("Starting up embedded Elasticsearch");
node = new LocalNode(nodeSettings.build(), Arrays.asList(Netty4Plugin.class,
ReindexPlugin.class,
CommonAnalysisPlugin.class));
node.start();
where
private static class LocalNode extends Node {
LocalNode(Settings settings, Collection<Class<? extends Plugin>> classpathPlugins) {
super(new Environment(settings, null), classpathPlugins, true);
}
#Override
protected void registerDerivedNodeNameWithLogger(final String s) {}
}
For 6.8.x you will need
<dependency>
<groupId>org.codelibs.elasticsearch.module</groupId>
<artifactId>analysis-common</artifactId>
<version>6.8.2</version>
</dependency>