docker学习(十八)docker-java的使用

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前言

docker开启远程访问，参考 docker学习(十七)docker开启远程访问

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一、引入依赖

<!-- https://mvnrepository.com/artifact/com.github.docker-java/docker-java -->
<dependency>
    <groupId>com.github.docker-java</groupId>
    <artifactId>docker-java</artifactId>
    <version>3.2.11</version>
</dependency>

<!-- https://mvnrepository.com/artifact/com.github.docker-java/docker-java-transport-httpclient5 -->
<dependency>
    <groupId>com.github.docker-java</groupId>
    <artifactId>docker-java-transport-httpclient5</artifactId>
    <version>3.2.11</version>
</dependency>

二、创建连接

public static DockerClient connect() throws URISyntaxException {
        String host = "tcp://172.16.10.151:2375";
        String apiVersion = "1.38";
		//创建DefaultDockerClientConfig 
        DefaultDockerClientConfig config = DefaultDockerClientConfig.createDefaultConfigBuilder()
                .withApiVersion(apiVersion)
                .withDockerHost(host)
                .build();
		//创建DockerHttpClient 
        DockerHttpClient httpClient = new ApacheDockerHttpClient.Builder()
                .dockerHost(config.getDockerHost())
                .maxConnections(100)
                .connectionTimeout(Duration.ofSeconds(30))
                .responseTimeout(Duration.ofSeconds(45))
                .build();
		//创建DockerClient 
        DockerClient client = DockerClientImpl.getInstance(config, httpClient);
        return client;
    }

三、常用方法

1、docker ping

private static void dockerPing() throws URISyntaxException {
        DockerClient client = connect();
        client.pingCmd().exec();
        System.out.println("ping...");
    }

2、docker info

 private static void dockerInfo() throws URISyntaxException {
        DockerClient client = connect();
        Info info = client.infoCmd().exec();
        System.out.println("docker info : " + info.toString());
    }

docker info :
{
    "architecture":"x86_64",
    "containers":17,
    "containersStopped":8,
    "containersPaused":0,
    "containersRunning":9,
    "cpuCfsPeriod":true,
    "cpuCfsQuota":true,
    "cpuShares":true,
    "cpuSet":true,
    "debug":false,
    "dockerRootDir":"/var/lib/docker",
    "driver":"overlay2",
    ...
    }

3、创建容器

public static CreateContainerResponse createContainer(DockerClient client) throws URISyntaxException {

        CreateContainerCmd containerCmd = client.createContainerCmd("nginx:latest")
                //名字
                .withName("nginx-01")
                //端口映射 内部80端口与外部81端口映射
                .withHostConfig(new HostConfig().withPortBindings(new Ports(new ExposedPort(80), Ports.Binding.bindPort(81))))
                //环境变量
                .withEnv("key=value")
                //挂载
                .withVolumes(new Volume("/var/log"));

        //创建
        CreateContainerResponse response = containerCmd.exec();
        System.out.println(response.getId());
        return response;
    }

4、创建并启动容器

 public static void startContainer() throws URISyntaxException {
        DockerClient client = connect();
        //创建
        CreateContainerResponse response = createContainer(client);
        String containerId = response.getId();
        //启动
        client.startContainerCmd(containerId).exec();
    }

5、停止容器

 public static void stopContainer() throws URISyntaxException {
        String containerId = "f97cca9cc21f";
        DockerClient client = connect();
        client.stopContainerCmd(containerId).exec();
    }

6、删除容器

 public static void removeContainer() throws URISyntaxException {
        String containerId = "f97cca9cc21f";
        DockerClient client = connect();
        client.removeContainerCmd(containerId).exec();
    }

7、构建镜像

准备Dockerfile和后台jar包

public static String buildImage() throws URISyntaxException {
        String imageName = "app";
        String imageTag = "v1";
        DockerClient client = connect();
        ImmutableSet<String> tag = ImmutableSet.of(imageName + ":" + imageTag);
        String imageId = client.buildImageCmd(new File("/opt/tmp/Dockerfile"))
                .withTags(tag)
                .start()
                .awaitImageId();
        return imageId;
    }

8、打镜像tag

 public static void tagImage() throws URISyntaxException {
        DockerClient client = connect();
        client.tagImageCmd("nginx:latest", "172.16.10.151:80/library/nginx", "v2").exec();
    }

9、推送镜像

推送到Harbor仓库

public static void pushImage() throws URISyntaxException, InterruptedException {
        DockerClient client = connect();
        AuthConfig authConfig = new AuthConfig()
                .withUsername("admin")
                .withPassword("Harbor12345")
                .withRegistryAddress("172.16.10.151:80");

        client.pushImageCmd("172.16.10.151:80/library/nginx:v2")
                .withAuthConfig(authConfig)
                .start()
                .awaitCompletion(30, TimeUnit.SECONDS);
    }

10、删除镜像

 public static void removeImage() throws URISyntaxException {
        DockerClient client = connect();
        client.removeImageCmd("172.16.10.151:80/library/nginx:v2").exec();
    }

11、拉取镜像

 public static void pullImage() throws URISyntaxException, InterruptedException {
        DockerClient client = connect();
        client.pullImageCmd("172.16.10.151:80/library/nginx:v2")
                .start()
                .awaitCompletion(30, TimeUnit.SECONDS);
    }

12、查看镜像详细信息

 public static void inspectImage() throws URISyntaxException, InterruptedException {
        DockerClient client = connect();
        InspectImageResponse response = client.inspectImageCmd("172.16.10.151:80/library/nginx:v2").exec();
        System.out.println(new Gson().toJson(response));
    }