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    • com.carrotsearch.lingo3g.integrations.elasticsearch.Lingo3GPlugin Maven / Gradle / Ivy

    package com.carrotsearch.lingo3g.integrations.elasticsearch;

import java.nio.file.Path;
import java.util.Collection;
import java.util.Collections;
import java.util.function.Supplier;
import org.elasticsearch.client.Client;
import org.elasticsearch.cluster.metadata.IndexNameExpressionResolver;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.io.stream.NamedWriteableRegistry;
import org.elasticsearch.common.xcontent.NamedXContentRegistry;
import org.elasticsearch.env.Environment;
import org.elasticsearch.env.NodeEnvironment;
import org.elasticsearch.plugins.Plugin;
import org.elasticsearch.repositories.RepositoriesService;
import org.elasticsearch.script.ScriptService;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.watcher.ResourceWatcherService;
import org.slf4j.LoggerFactory;

/**
 * Elasticsearch extension plugin adding Lingo3G clustering algorithm support to elasticsearch-carrot2.
 */
public class Lingo3GPlugin extends Plugin {
  public static final String PLUGIN_NAME = "elasticsearch-lingo3g";

  public Lingo3GPlugin() {
    // A hack to initialize slf4j bindings properly. ES sets context
    // class loader properly when initializing the plugin, not when
    // creating components.
    // https://github.com/elastic/elasticsearch/pull/63185
    hackInitSlf4j();
  }

  @Override
  public Collection createComponents(
      Client client,
      ClusterService clusterService,
      ThreadPool threadPool,
      ResourceWatcherService resourceWatcherService,
      ScriptService scriptService,
      NamedXContentRegistry xContentRegistry,
      Environment environment,
      NodeEnvironment nodeEnvironment,
      NamedWriteableRegistry namedWriteableRegistry,
      IndexNameExpressionResolver indexNameExpressionResolver,
      Supplier repositoriesServiceSupplier) {

    try {
      Path configPath = environment.configFile();
      Path pluginPath = environment.configFile().resolve(PLUGIN_NAME);
      LicenseLocationSupplier.setGlobalLocations(
          new Path[] {configPath.toAbsolutePath(), pluginPath.toAbsolutePath()});

      new LicenseCheck().run();
    } catch (NoClassDefFoundError e) {
      throw new RuntimeException(
          "Required Lingo3G classes not found (did you copy Lingo3G JARs to the plugin?): "
              + e.getMessage());
    }
    return Collections.emptyList();
  }

  private void hackInitSlf4j() {
    LoggerFactory.getLogger(this.getClass());
  }
}
    
    
    
    

    




    
    
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