scala - 基于docker容器的库以支持elastic4s

Question

我正在使用elastic4s，也对使用基于docker容器的测试环境进行 Elasticsearch 感兴趣。

像testcontainers-scala和docker-it-scala这样的库很少，但是找不到我如何将elastic4s集成到这些库中，有人曾经使用过基于Docker容器的测试环境吗？

目前我的规格非常简单:

class ElasticSearchApiServiceSpec extends FreeSpec {

  implicit val defaultPatience = PatienceConfig(timeout = Span(100, Seconds), interval = Span(50, Millis))

  val configuration: Configuration = app.injector.instanceOf[Configuration]

  val elasticSearchApiService = new ElasticSearchApiService(configuration)

  override protected def beforeAll(): Unit = {
    elasticSearchApiService.elasticClient.execute {
      index into s"peopleIndex/person" doc StringDocumentSource(PeopleFactory.rawStringGoodPerson)
    }
    // since ES is eventually
    Thread.sleep(3000)
  }

  override protected def afterAll(): Unit = {
    elasticSearchApiService.elasticClient.execute {
      deleteIndex("peopleIndex")
    }
  }

  "ElasticSearchApiService Tests" - {

    "elastic search service should retrieve person info properly - case existing person" in {
      val personInfo = elasticSearchApiService.getPersonInfo("2324").futureValue

      personInfo.get.name shouldBe "john"
    }
  }

}

当我运行它时，我在终端中在后台运行 Elasticsearch ，但是我现在想使用容器，这样它就不再那么依赖了。

Answer 1

我猜您不想依赖本地计算机上运行的ES服务器进行测试。那么最简单的方法就是使用testcontainers-scala的GenericContainer通过这种方式运行官方ES docker image:

class GenericContainerSpec extends FlatSpec with ForAllTestContainer {
    override val container = GenericContainer("docker.elastic.co/elasticsearch/elasticsearch:5.5.1",
        exposedPorts = Seq(9200),
        waitStrategy = Wait.forHttp("/")
    )

    "GenericContainer" should "start ES and expose 9200 port" in {
       assert(Source.fromInputStream(
          new URL(
            s"http://${container.containerIpAddress}:${container.mappedPort(9200)}/_status")
            .openConnection()
            .getInputStream)
           .mkString
           .contains("ES server is successfully installed"))
    }
}