Question

我正在使用TestContainers运行dgraph。

这是我的测试代码：

package net.dgraph.java.client

import io.dgraph.DgraphAsyncClient
import io.dgraph.DgraphClient
import org.testcontainers.containers.DockerComposeContainer
import org.testcontainers.containers.GenericContainer
import org.testcontainers.spock.Testcontainers
import spock.lang.Shared
import spock.lang.Specification

import java.time.Duration
import java.time.temporal.ChronoUnit

@Testcontainers
public class DGraphTest extends Specification {
private SyncSigmaDgraphClient syncClient
private AsyncSigmaDGraphClient asyncClient
private static address
static DockerComposeContainer compose

def setup() {
   syncClient  = SigmaDgraphClientBuilder
            .create()
            .withHost(address)
            .withPort(port1)
            .buildSync()
}
static {
    compose =
            new DockerComposeContainer(
                    new File("src/test/resources/docker-compose.yaml"))
    compose.start()
    this.address = compose.getServiceHost("dgraph", 8080)
    this.port1 = compose.getServicePort("dgraph",8080)
}

我的docker-compose.yaml文件如下：

version: "3.2"
services:
  zero:
    image: dgraph/dgraph:latest
    volumes:
      - /tmp/data:/dgraph
    ports:
      - 5080:5080
      - 6080:6080
    restart: on-failure
    command: dgraph zero --my=zero:5080
  alpha:
    image: dgraph/dgraph:latest
    volumes:
      - /tmp/data:/dgraph
    ports:
      - 8080:8080
      - 9080:9080
    restart: on-failure
    command: dgraph alpha --my=alpha:7080 --lru_mb=2048 --zero=zero:5080
  ratel:
    image: dgraph/dgraph:latest
    ports:
      - 8000:8000
    command: dgraph-ratel

我的docker版本是Docker version 19.03.2, build 6a30dfc，而我的docker-compose版本是docker-compose version 1.24.1, build 4667896b。

但是我遇到以下错误：

[main] ERROR ? [docker/compose:1.8.0] - Log output from the failed container:
Version in "src/test/resources/docker-compose.yaml" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a version of "2" (or "2.0") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.

我发现有趣的一部分是错误日志显示了docker / compose：1.8.0，该版本比我当前正在运行的版本更旧。我曾尝试在docker-compose中更改版本，但这似乎不起作用。我查看了其他具有相同错误的问题，但它们的解决方案均无效。我觉得TestContainer库比我使用的是较旧版本的docker-compose，但是如果这是问题，那么我不知道如何解决。

Answer 1

我相信您需要本地撰写模式：

compose =
        new DockerComposeContainer(
                new File("src/test/resources/docker-compose.yaml")).withLocalCompose(true)

有关更多详细信息，请参见local compose mode文档：

您可以覆盖Testcontainers的默认行为，并使其使用在本地计算机上安装的docker-compose二进制文件。这将通常产生的体验更接近于运行docker-compose 在本地，需要注意的是Docker Compose必须存在开发和CI机器。

Answer 2

这是我最终使用的方法：

我使用Network.newNetwork()将零和alpha实例绑定在一起。我使用调试工具和docker logs来查看dgraph zero需要等待才能成功启动的消息。

 static {
    Network network = Network.newNetwork()
    dgraph_zero = new GenericContainer<>("dgraph/dgraph")
            .withExposedPorts(5080)
            .withNetworkAliases("zero")
            .withStartupTimeout(Duration.of(1, ChronoUnit.MINUTES))
            .withCommand("dgraph zero --my=zero:5080")
            .withNetwork(network)
            .waitingFor(Wait.forLogMessage('.* Updated Lease id: 1.*\\n',1))
    dgraph_zero.start()

  dgraph_alpha = new GenericContainer<>("dgraph/dgraph")
        .withExposedPorts(9080)
        .withStartupTimeout(Duration.of(1, ChronoUnit.MINUTES))
        .withNetworkAliases("alpha")
        .withCommand("dgraph alpha --my=alpha:7080 --lru_mb=2048 --zero=zero:5080")
        .withNetwork(network)
        .waitingFor(Wait.forLogMessage(".*Server is ready.*\\n",1))
    dgraph_alpha.start()

    this.address = dgraph_alpha.containerIpAddress
    this.port1 = dgraph_alpha.getMappedPort(9080)

    ManagedChannel channel = ManagedChannelBuilder
            .forAddress(address,port1)
            .usePlaintext()
            .build();
    DgraphGrpc.DgraphStub stub = DgraphGrpc.newStub(channel);
    this.dgraphclient = new DgraphClient(stub) ;
    Transaction txn = this.dgraphclient.newTransaction();

不支持Docker-Compose版本

2 个答案: