1 /*
2  *  Make.org Core API
3  *  Copyright (C) 2018 Make.org
4  *
5  * This program is free software: you can redistribute it and/or modify
6  *  it under the terms of the GNU Affero General Public License as
7  *  published by the Free Software Foundation, either version 3 of the
8  *  License, or (at your option) any later version.
9  *
10  *  This program is distributed in the hope that it will be useful,
11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  *  GNU Affero General Public License for more details.
14  *
15  *  You should have received a copy of the GNU Affero General Public License
16  *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
17  *
18  */
19 
20 package org.make.api.technical.healthcheck
21 
22 import com.sksamuel.elastic4s.Index
23 import com.sksamuel.elastic4s.ElasticDsl._
24 import org.make.api.technical.elasticsearch._
25 import org.make.api.technical.healthcheck.HealthCheck.Status
26 
27 import scala.concurrent.{ExecutionContext, Future}
28 
29 class ElasticsearchHealthCheck(
30   elasticsearchConfiguration: ElasticsearchConfiguration,
31   elasticsearchClient: ElasticsearchClient
32 ) extends HealthCheck {
33 
34   override val techno: String = "elasticsearch"
35 
36   private val proposalAlias: Index =
37     elasticsearchConfiguration.proposalAliasName
38 
39   override def healthCheck()(implicit ctx: ExecutionContext): Future[Status] = {
40     elasticsearchClient.client
41       .executeAsFuture(search(proposalAlias).bool(must(matchAllQuery())).limit(1))
42       .map { response =>
43         if (response.totalHits > 0) {
44           Status.OK
45         } else {
46           Status.NOK(Some("Unexpected result in elasticsearch health check: expected result greater than 0"))
47         }
48       }
49   }
50 
51 }