如何为Elasticsearch自定义插件编写测试？

Question

我创建自定义Elasticsearch插件.现在我想为这个插件编写一个测试.我的期望是 - 我可以运行嵌入式Elasticsearch实例,正确设置它然后做一些测试(索引一些文档,然后查询它)

问题是我无法正确设置我的插件

自定义插件代码正在解析JSON查询并设置一些对象供以后使用:

public class CustomQueryParserPlugin extends AbstractPlugin {
    public static final String PLUGIN_NAME = "custom_query";
    private final Settings settings;

    @Inject
    public CustomQueryParserPlugin (Settings settings) {
        this.settings = settings;
    }

    @Override
    public String name() {
        return PLUGIN_NAME;
    }

    @Override
    public String description() {
        return "custom plugin";
    }

    public void onModule(IndicesQueriesModule module) {
        module.addQuery(new CustomQueryParser(settings));
    }
}

测试代码:

public class CustomParserPluginTest extends ElasticsearchSingleNodeTest {

    private static Node newNode() {
        final Settings settings = ImmutableSettings.builder()
                .put(ClusterName.SETTING, nodeName())
                .put("node.name", nodeName())
                .put(IndexMetaData.SETTING_NUMBER_OF_SHARDS, 1)
                .put(IndexMetaData.SETTING_NUMBER_OF_REPLICAS, 0)
                .put(EsExecutors.PROCESSORS, 1) // limit the number of threads created
                .put("http.enabled", false)
                .put("plugin.types", CustomParserPlugin.class.getName())
                .put("path.plugins", pathToPlugin)
                .put("index.store.type", "ram")
                .put("config.ignore_system_properties", true) // make sure we get what we set :)
                .put("gateway.type", "none").build();
        Node build = NodeBuilder.nodeBuilder().local(true).data(true).settings(
                settings).build();
        build.start();
        assertThat(DiscoveryNode.localNode(build.settings()), is(true));
        return build;
    }


    @Test
    public void jsonParsing() throws URISyntaxException {
        final Client client = newNode().client();
        final SearchResponse test = client.prepareSearch("test-index").setSource(addQuery()).execute().actionGet();
    }

    private String addQuery() {
         return "{"match_all":{"boost":1.2}}"
    }

我为pathToPlugin尝试了多个值- 但似乎没有什么效果很好,因为JSON查询总是给我一个例外:

QueryParsingException[[test-index] No query registered for [custom_query]];

我能找到的所有文档都是关于安装插件并在一些本地Elasticsearch安装上测试它们.

我在这做错了什么？有没有这样的测试文档或示例？

UPD.这是一个包含CustomQueryParserPlugin提取代码的仓库 - https://github.com/MysterionRise/es-custom-parser

可能在初始化部分测试我需要在内存中创建索引吗？

Answer 1

要为您的插件编写测试,您可以使用Elasticsearch Cluster Runner.供参考检查MinHash插件如何编写测试.

更新:

我已经改变了CustomParserPluginTest类以使用Elasticsearch Cluster Runner:

import static org.codelibs.elasticsearch.runner.ElasticsearchClusterRunner.newConfigs;
import java.util.Map;
import junit.framework.TestCase;
import org.codelibs.elasticsearch.runner.ElasticsearchClusterRunner;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.common.settings.ImmutableSettings.Builder;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.index.get.GetField;
import org.junit.Assert;
import org.elasticsearch.action.search.SearchResponse;
import static org.hamcrest.core.Is.is;

public class CustomParserPluginTest extends TestCase {

    private ElasticsearchClusterRunner runner;

    @Override
    protected void setUp() throws Exception {
        // create runner instance
        runner = new ElasticsearchClusterRunner();
        // create ES nodes
        runner.onBuild(new ElasticsearchClusterRunner.Builder() {
            @Override
            public void build(final int number, final Builder settingsBuilder) {
            }
        }).build(newConfigs().ramIndexStore().numOfNode(1));

        // wait for yellow status
        runner.ensureYellow();
    }

    @Override
    protected void tearDown() throws Exception {
        // close runner
        runner.close();
        // delete all files
        runner.clean();
    }

    public void test_jsonParsing() throws Exception {
        final String index = "test_index";

        runner.createIndex(index, ImmutableSettings.builder().build());
        runner.ensureYellow(index);

        final SearchResponse test = runner.client().prepareSearch(index).setSource(addQuery()).execute().actionGet();
    }

    private String addQuery() {
        return "{\"match_all\":{\"boost\":1.2}}";
    }
}

我创建了es-plugin.properties(pluginrootdirectory\src\main\resources)文件,其中包含以下内容,这将强制elasticsearch实例加载插件:

plugin=CustomQueryParserPlugin

当您运行此测试时,您将在输出中看到新创建的elasticsearch的insance加载了该插件.

[2015-04-29 19:22:10,783] [INFO] [org.elasticsearch.node] [节点1]版本[1.5 .0],pid [34360],build [5448160/2015-03-23T14:30: 58Z] [2015-04-29 19:22:10,784] [INFO] [org.elasticsearch.node] [节点1]初始化... [2015-04-29 19:22:10,795] [INFO] [org] .elasticsearch.plugins] [节点1]加载[ custom_query ],sites [] [2015-04-29 19:22:13,342] [INFO] [org.elasticsearch.node] [Node 1]初始化

[2015-04-29 19:22:13,342] [INFO] [org.elasticsearch.node] [节点1]开始......

希望这可以帮助.