| /* |
| * 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.StorageClientConfig |
| import org.apache.predictionio.data.storage.App |
| import org.apache.predictionio.data.storage.Apps |
| import org.elasticsearch.ElasticsearchException |
| import org.elasticsearch.client.Client |
| import org.elasticsearch.index.query.FilterBuilders._ |
| import org.json4s.JsonDSL._ |
| import org.json4s._ |
| import org.json4s.native.JsonMethods._ |
| import org.json4s.native.Serialization.read |
| import org.json4s.native.Serialization.write |
| |
| /** Elasticsearch implementation of Items. */ |
| class ESApps(client: Client, config: StorageClientConfig, index: String) |
| extends Apps with Logging { |
| implicit val formats = DefaultFormats.lossless |
| private val estype = "apps" |
| private val seq = new ESSequences(client, config, index) |
| |
| val indices = client.admin.indices |
| val indexExistResponse = indices.prepareExists(index).get |
| if (!indexExistResponse.isExists) { |
| indices.prepareCreate(index).get |
| } |
| val typeExistResponse = indices.prepareTypesExists(index).setTypes(estype).get |
| if (!typeExistResponse.isExists) { |
| val json = |
| (estype -> |
| ("properties" -> |
| ("name" -> ("type" -> "string") ~ ("index" -> "not_analyzed")))) |
| indices.preparePutMapping(index).setType(estype). |
| setSource(compact(render(json))).get |
| } |
| |
| def insert(app: App): Option[Int] = { |
| val id = |
| if (app.id == 0) { |
| var roll = seq.genNext("apps") |
| while (!get(roll).isEmpty) roll = seq.genNext("apps") |
| roll |
| } |
| else app.id |
| val realapp = app.copy(id = id) |
| update(realapp) |
| Some(id) |
| } |
| |
| def get(id: Int): Option[App] = { |
| try { |
| val response = client.prepareGet( |
| index, |
| estype, |
| id.toString).get() |
| Some(read[App](response.getSourceAsString)) |
| } catch { |
| case e: ElasticsearchException => |
| error(e.getMessage) |
| None |
| case e: NullPointerException => None |
| } |
| } |
| |
| def getByName(name: String): Option[App] = { |
| try { |
| val response = client.prepareSearch(index).setTypes(estype). |
| setPostFilter(termFilter("name", name)).get |
| val hits = response.getHits().hits() |
| if (hits.size > 0) { |
| Some(read[App](hits.head.getSourceAsString)) |
| } else { |
| None |
| } |
| } catch { |
| case e: ElasticsearchException => |
| error(e.getMessage) |
| None |
| } |
| } |
| |
| def getAll(): Seq[App] = { |
| try { |
| val builder = client.prepareSearch(index).setTypes(estype) |
| ESUtils.getAll[App](client, builder) |
| } catch { |
| case e: ElasticsearchException => |
| error(e.getMessage) |
| Nil |
| } |
| } |
| |
| def update(app: App): Unit = { |
| try { |
| val response = client.prepareIndex(index, estype, app.id.toString). |
| setSource(write(app)).get() |
| } catch { |
| case e: ElasticsearchException => |
| error(e.getMessage) |
| } |
| } |
| |
| def delete(id: Int): Unit = { |
| try { |
| client.prepareDelete(index, estype, id.toString).get |
| } catch { |
| case e: ElasticsearchException => |
| error(e.getMessage) |
| } |
| } |
| } |