Elasticsearch Java testing framework and plugins

joschi · May 5, 2017, 11:26am

Hi,

how can I run tests within the Elasticsearch Java testing framework which require a plugin (specifically lang-painless)?

I want to use Elasticsearch 5.4.0 but couldn't find any artifact of Painless for that version. Is there an official artifact for Painless I can pull in, like the unofficial org.codelibs.elasticsearch.module : lang-painless : 5.3.2?

dadoonet · May 5, 2017, 11:56am

painless is running on the server side. Which means that it must run within an elasticsearch node.
So you probably want to run integration tests here, right?

joschi · May 5, 2017, 12:03pm

Yes, I want to use ESIntegTestCase.

Any hints how I could add plugins there?

The specific project is Jest and the code for Elasticsearch 5.3.0 is as follows:

github.com

searchbox-io/Jest/blob/ba06641cc11ae652cf3eeea5e560dd98e2a5be4a/pom.xml#L318-L323


<dependency>
    <groupId>org.codelibs.elasticsearch.module</groupId>
    <artifactId>lang-painless</artifactId>
    <version>${elasticsearch.version}</version>
    <scope>test</scope>
</dependency>

github.com

searchbox-io/Jest/blob/af2e137311b1ce56ebe233b243b74fa2eed6ace3/jest/src/test/java/io/searchbox/common/AbstractIntegrationTest.java#L45-L48


@Override
protected Collection<Class<? extends Plugin>> nodePlugins() {
    return Arrays.asList(Netty4Plugin.class, PainlessPlugin.class, PercolatorPlugin.class, MustachePlugin.class);
}

dadoonet · May 5, 2017, 12:24pm

I'd start an external elasticsearch cluster.

For example, have a look at the maven elasticsearch plugin which is really nice for that.

joschi · May 5, 2017, 12:38pm

Thanks for your reply!

Does ESIntegTestCase work with an external Elasticsearch cluster?

If not, that's a change I'd like to avoid for now. Looks like it'll stay on Elasticsearch 5.3.x until there's a (third-party) artifact of lang-painless for ES 5.4.0.

It would work, if there was an official artifact for lang-painless.

joschi · May 5, 2017, 12:48pm

As far as I see, that Maven plugin only supports spawning a single Elasticsearch node but not a whole cluster, is that correct?

dadoonet · May 5, 2017, 2:26pm

Correct. May be you can open an issue so they will see if they can support this or not.
Although it's a corner case IMO as you would just expect that the cluster is acting correctly whatever the number of nodes you have.

I understand that in your case you want to test things like failover or such.

system · June 2, 2017, 2:32pm

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