io.scalecube.config.examples.MongoConfigExample Maven / Gradle / Ivy

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package io.scalecube.config.examples;

import io.scalecube.config.ConfigRegistry;
import io.scalecube.config.ConfigRegistrySettings;
import io.scalecube.config.StringConfigProperty;
import io.scalecube.config.audit.Slf4JConfigEventListener;
import io.scalecube.config.keyvalue.KeyValueConfigSource;
import io.scalecube.config.mongo.MongoConfigConnector;
import io.scalecube.config.mongo.MongoConfigEventListener;
import io.scalecube.config.mongo.MongoConfigRepository;

/**
 * For program properly functioning add some data to mogno.
 *
 * 
 *   Collection {@code group1.config_source} must have: {@code prop1->value-from-group1}
 *   
Collection {@code group2.config_source} must have: {@code prop1->value-from-group2}
 *   
Collection {@code group3.config_source} must have: {@code prop2->value-from-group3}
 *   
Collection {@code config_source} must have: {@code propRoot->value-from-root}
 * 
 *
 * NOTE: A document in certain collection comes in format:
 *
 * 
 *   {
 *     "config" :
 *     [ {
 *         "propName" : "prop_name_1",
 *         "propValue" : "prop_value_1"
 *       },
 *       ...
 *       {
 *         "propName" : "prop_name_N",
 *         "propValue" : "prop_value_N"
 *       }
 *     ]
 *   }
 * 
 */
public class MongoConfigExample {

  /**
   * Main method of example of mongo config.
   *
   * @param args program arguments
   */
  public static void main(String[] args) {
    String databaseName =
        args[0] != null ? args[0] : "MongoConfigExample" + System.currentTimeMillis();
    String uri = "mongodb://localhost:27017/" + databaseName;
    String configSourceCollectionName = "MongoConfigRepository";
    String auditLogCollectionName = "TestConfigurationAuditLog";

    MongoConfigConnector connector = MongoConfigConnector.builder().forUri(uri).build();

    KeyValueConfigSource mongoConfigSource =
        KeyValueConfigSource.withRepository(
                new MongoConfigRepository(connector), configSourceCollectionName)
            .groups("group1", "group2", "group3")
            .build();

    ConfigRegistry configRegistry =
        ConfigRegistry.create(
            ConfigRegistrySettings.builder()
                .addLastSource("MongoConfig", mongoConfigSource)
                .addListener(new Slf4JConfigEventListener())
                .addListener(new MongoConfigEventListener(connector, auditLogCollectionName))
                .keepRecentConfigEvents(3)
                .reloadIntervalSec(1)
                .build());

    StringConfigProperty prop1 = configRegistry.stringProperty("prop1");
    System.out.println(
        "### Initial mongo config property: prop1="
            + prop1.value().get()
            + ", group="
            + prop1.origin().get());

    StringConfigProperty prop2 = configRegistry.stringProperty("prop2");
    System.out.println(
        "### Initial mongo config property: prop2="
            + prop2.value().get()
            + ", group="
            + prop2.origin().get());

    StringConfigProperty propRoot = configRegistry.stringProperty("propRoot");
    System.out.println(
        "### Initial mongo config **root** property: propRoot="
            + propRoot.value().get()
            + ", group="
            + propRoot.origin().get());
  }
}