/**
 * Copyright (C) 2014 Stratio (http://stratio.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.stratio.ingestion.sink.elasticsearch;

import org.apache.commons.lang.time.FastDateFormat;
import org.apache.flume.Event;
import org.apache.flume.conf.Configurable;
import org.apache.flume.conf.ConfigurableComponent;
import org.elasticsearch.action.index.IndexRequestBuilder;
import org.elasticsearch.client.Client;

import java.io.IOException;
import java.util.TimeZone;

/**
 * Interface for creating ElasticSearch {@link IndexRequestBuilder} instances
 * from serialized flume events. This is configurable, so any config params
 * required should be taken through this.
 */
public interface ElasticSearchIndexRequestBuilderFactory extends Configurable,
    ConfigurableComponent {

  static final FastDateFormat df = FastDateFormat.getInstance("yyyy-MM-dd",
      TimeZone.getTimeZone("Etc/UTC"));

  /**
   * @return prepared ElasticSearch {@link IndexRequestBuilder} instance
   * @param client
   *          ElasticSearch {@link Client} to prepare index from
   * @param indexPrefix
   *          Prefix of index name to use -- as configured on the sink
   * @param indexType
   *          Index type to use -- as configured on the sink
   * @param event
   *          Flume event to serialize and add to index request
   * @throws IOException
   *           If an error occurs e.g. during serialization
   */
  IndexRequestBuilder createIndexRequest(Client client, String indexPrefix,
      String indexType, Event event) throws IOException;



}
