storage/elasticsearch1/src/main/scala/org/apache/predictionio/data/storage/elasticsearch/StorageClient.scala

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.predictionio.data.storage.elasticsearch

import grizzled.slf4j.Logging
import org.apache.predictionio.data.storage.BaseStorageClient
import org.apache.predictionio.data.storage.StorageClientConfig
import org.apache.predictionio.data.storage.StorageClientException
import org.elasticsearch.client.transport.TransportClient
import org.elasticsearch.common.settings.ImmutableSettings
import org.elasticsearch.common.transport.InetSocketTransportAddress
import org.elasticsearch.transport.ConnectTransportException

class StorageClient(val config: StorageClientConfig) extends BaseStorageClient
    with Logging {
  override val prefix = "ES"
  val client = try {
    val hosts = config.properties.get("HOSTS").
      map(_.split(",").toSeq).getOrElse(Seq("localhost"))
    val ports = config.properties.get("PORTS").
      map(_.split(",").toSeq.map(_.toInt)).getOrElse(Seq(9300))
    val settings = ImmutableSettings.settingsBuilder()
      .put("cluster.name", config.properties.getOrElse("CLUSTERNAME", "elasticsearch"))
    val transportClient = new TransportClient(settings)
    (hosts zip ports) foreach { hp =>
      transportClient.addTransportAddress(
        new InetSocketTransportAddress(hp._1, hp._2))
    }
    transportClient
  } catch {
    case e: ConnectTransportException =>
      throw new StorageClientException(e.getMessage, e)
  }
}