1

我创建了一个用于从 elasticsearch 检索数据的集成测试。

我正在使用 testContainer 的默认值,因此我的 RestHighLevelClient 应该可以访问测试容器,但是java.net.ConnecteException: Connection refused当我尝试索引数据时,我总是得到相同的异常(),但是当我通过命令在本地运行我的 docker 图像时

docker run -d --rm -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" -e "transport.host=127.0.0.1"  --name elastic docker.elastic.co/elasticsearch/elasticsearch:6.5.4

我的测试工作正常。

问题出在哪里,因为端口映射是一样的?这个异常的原因是什么?

我的测试:

@ExtendWith(SpringExtension.class)
@Testcontainers
@WebMvcTest
class FlowerResourceTest {

    @Container
    private ElasticsearchContainer esContainer = new ElasticsearchContainer("docker.elastic.co/elasticsearch/elasticsearch:6.5.4");

    @Autowired
    private ElasticsearchConfiguration esConfig;

    @Autowired
    private FlowerService flowerService;

    private RestHighLevelClient client;


    @Test
    void test() throws IOException, InterruptedException {
        client = esConfig.client();

        var jsonFlower = "{\n" +
                "    \"name\": \"XXX\",\n" +
                "  \"color\" : \"red\"\n" +
                "}";
        IndexRequest indexRequest = new IndexRequest("flowers", "doc", "1")
                .source(jsonFlower, XContentType.JSON);


        assertTrue(esContainer.isRunning());
        client.index(indexRequest, RequestOptions.DEFAULT);


        var flowers = flowerService.findAll();


        assertTrue(flowers.size() > 0);

        DeleteRequest deleteRequest = new DeleteRequest("flowers", "doc", "1");

        client.delete(deleteRequest, RequestOptions.DEFAULT);
    }
}
4

3 回答 3

2

如果我没记错的话,你可以使用以下命令请求暴露的端口:

esContainer.getMappedPort(ELASTICSEARCH_PORT);

Docker 容器公开了一个随机可用端口,因此请使用上述命令检查该端口。将该端口用于客户端。如果您有兴趣,我的一位同事用一些示例代码写了一篇关于此的博客文章: https ://amsterdam.luminis.eu/2018/08/20/elasticsearch-instances-for-integration-testing/

于 2019-01-05T23:53:49.930 回答
0
  1. 除非您进行不同的配置,否则默认端口为 9200。因此,如果您的客户端尝试连接到默认端口,则需要确保 9200 可用,以便可以在该端口上启动 Testcontainers 中的 Elasticsearch。
  2. 我猜想 Elasticsearch 没有足够的时间启动。这是一个 Java 进程,可能需要一些时间——在我的机器上大约 20 多岁。您可能需要设置等待策略;像这样的东西:

    esContainer.setWaitStrategy(
            Wait.forHttp("/")
                    .forPort(9200)
                    .forStatusCode(200)
                    .withStartupTimeout(Duration.ofSeconds(60)));
    
于 2019-01-05T19:17:01.620 回答
0

尝试以这种方式使用它

    @Container
    private static ElasticsearchContainer elasticsearchContainer = new ElasticTestContainer();
    private RestHighLevelClient client;

    @BeforeClass
    public static void init(){
       elasticsearchContainer.start();
    }

    @Test
    void test() throws IOException, InterruptedException {
        RestClientBuilder restClientBuilder = RestClient.builder(new HttpHost(elasticsearchContainer.getHost(), 9200, "http"));
        client = new RestHighLevelClient(restClientBuilder);
        

        var jsonFlower = "{\n" +
                "    \"name\": \"XXX\",\n" +
                "  \"color\" : \"red\"\n" +
                "}";
        IndexRequest indexRequest = new IndexRequest("flowers", "doc", "1")
                .source(jsonFlower, XContentType.JSON);


        assertTrue(elasticsearchContainer.isRunning());
        client.index(indexRequest, RequestOptions.DEFAULT);


        var flowers = flowerService.findAll();


        assertTrue(flowers.size() > 0);

        DeleteRequest deleteRequest = new DeleteRequest("flowers", "doc", "1");

        client.delete(deleteRequest, RequestOptions.DEFAULT);
    }

ElasticTestContainer 类

public class ElasticTestContainer extends ElasticsearchContainer {

    private static final String DOCKER_ELASTIC = "docker.elastic.co/elasticsearch/elasticsearch:6.5.4";

    private static final String CLUSTER_NAME = "sample-cluster";

    private static final String ELASTIC_SEARCH = "elasticsearch";

    public ElasticTestContainer() {
        super(DOCKER_ELASTIC);
        this.addFixedExposedPort(9200, 9200);
        this.addFixedExposedPort(9300, 9300);
        this.addEnv(CLUSTER_NAME, ELASTIC_SEARCH);
    }
}
于 2021-08-11T14:51:21.637 回答