測驗容器：容器之間的通信 映射的外部埠

我有這樣的測驗設定：

1. MyService連接到PostgtreSQL
2. MyService正在從測驗套件呼叫端點

兩者MyService都PostgreSQL使用 Testcontainers 運行。

這是我想要實作的網路架構。

起初我試圖通過暴露埠來安排通信。

static final PostgreSQLContainer<?> postgres =
            new PostgreSQLContainer<>(DockerImageName.parse(POSTGRES_VERSION));

static final GenericContainer<?> myService = new GenericContainer<>(DockerImageName.parse(MY_SERVICE_IMAGE))
                .withEnv(
                    Map.of(
                        "SPRING_DATASOURCE_URL", postgres.getJdbcUrl(),
                        "SPRING_DATASOURCE_USERNAME", postgres.getUsername(),
                        "SPRING_DATASOURCE_PASSWORD", postgres.getPassword()
                    )
                )
                .withExposedPorts(8080)
                .withLogConsumer(new Slf4jLogConsumer(LoggerFactory.getLogger("MyService")))

根據日志MyService無法建立與PostgreSQL.

Caused by: java.net.ConnectException: Connection refused

然后我將這兩個服務配置為共享同一個網路。

static final Network SHARED_NETWORK = Network.newNetwork();

static final PostgreSQLContainer<?> postgres =
            new PostgreSQLContainer<>(DockerImageName.parse(POSTGRES_VERSION))
                 .withNetwork(SHARED_NETWORK)
                 .withNetworkAliases("postgres");

static final GenericContainer<?> myService = new GenericContainer<>(DockerImageName.parse(MY_SERVICE_IMAGE))
                .withEnv(
                    Map.of(
                        "SPRING_DATASOURCE_URL", "jdbc:postgresql://postgres:5432/"   postgres.getDatabaseName(),
                        "SPRING_DATASOURCE_USERNAME", postgres.getUsername(),
                        "SPRING_DATASOURCE_PASSWORD", postgres.getPassword()
                    )
                )
                .withExposedPorts(8080)
                .withNetwork(SHARED_NETWORK)
                .withNetworkAliases("MyService")
                .withLogConsumer(new Slf4jLogConsumer(LoggerFactory.getLogger("MyService")))

現在MyService已經成功建立連接PostgreSQL。但是當我從測驗套件執行 HTTP 請求時MyService，我得到了同樣的錯誤。

restTemplate.getForObject("http://"   myService.getHost()   ":"   myService.getMappedPort(8080)  "/api/endpoint", Void.class)

Caused by: java.net.ConnectException: Connection refused

我的問題是如何設定容器網路以使該架構正常作業？

uj5u.com熱心網友回復：

您需要指定埠系結以將埠公開給“外部世界”。

類似于您想要的示例：

  Network network = Network.newNetwork();
  GenericContainer mariaDbServer = getMariaDbContainer(network);
  GenericContainer flywayRunner = getFlywayContainer(network);
  ...
  @SuppressWarnings("rawtypes")
  private GenericContainer getMariaDbContainer(Network network) {

    return new GenericContainer<>("mariadb:10.4.21-focal")
        .withEnv(Map.of("MYSQL_ROOT_PASSWORD", "password", "MYSQL_DATABASE", "somedatabase"))
        .withCommand(
            "mysqld", "--default-authentication-plugin=mysql_native_password", "--character-set-server=utf8mb4",
            "--collation-server=utf8mb4_unicode_ci").withNetwork(network).withNetworkAliases("somedatabasedb")
        .withNetworkMode(network.getId())
        .withExposedPorts(3306).withCreateContainerCmdModifier(
            cmd -> cmd.withNetworkMode(network.getId()).withHostConfig(
                    new HostConfig()
                        .withPortBindings(new PortBinding(Ports.Binding.bindPort(20306), new ExposedPort(3306))))
                .withNetworkMode(network.getId())).withStartupTimeout(Duration.ofMinutes(2L));
  }

  @SuppressWarnings("rawtypes")
  private GenericContainer getFlywayContainer(Network network) {

    return new GenericContainer<>("flyway/flyway:7.15.0-alpine")
        .withEnv(Map.of("MYSQL_ROOT_PASSWORD", "password", "MYSQL_DATABASE", "somedatabase"))
        .withCommand(
            "-url=jdbc:mariadb://somedatabasedb -schemas=somedatabase-user=root -password=password -connectRetries=300 migrate")
        .withFileSystemBind(Paths.get(".", "infrastructure/database/schema").toAbsolutePath().toString(),
            "/flyway/sql", BindMode.READ_ONLY).withNetwork(network).waitingFor(
            Wait.forLogMessage(".*Successfully applied.*", 1)
        ).withStartupTimeout(Duration.of(60, ChronoUnit.SECONDS));
  }

容器二使用“內部”埠與容器一通信。

容器一將 20306（重定向到 3306）埠暴露給“外部世界”。

標籤：爪哇 码头工人 测试 集成测试 测试容器

上一篇：在通用檔案cypress中添加重復代碼

下一篇：如何測驗可調整大小的圓形SVG元素？