Java连接Harbor

Harbor是一个开源的容器镜像仓库，用于存储、分发和管理Docker容器镜像。它提供了一个可靠、高效和安全的平台来管理镜像，并支持复制、备份和恢复等功能。在Java应用程序中，我们可以使用一些库来连接和操作Harbor。

本文将介绍如何使用Java连接Harbor，并提供代码示例。首先，让我们看一下连接Harbor的基本流程。

流程图

flowchart TD
    subgraph "连接Harbor"
    A[创建HTTPClient对象] --> B[构建API URL]
    B --> C[构建请求]
    C --> D[发送请求]
    D --> E[处理响应]
    end

类图

classDiagram
    class HarborClient {
        +createRepository(name: String): boolean
        +deleteRepository(name: String): boolean
        +listRepositories(): List<Repository>
        +getTags(repository: String): List<String>
        +getImage(repository: String, tag: String): Image
        +pushImage(repository: String, tag: String, image: Image): boolean
    }

代码示例

首先，我们需要使用Java的HTTPClient库来连接和发送请求到Harbor。以下是一个示例代码：

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class HarborClient {

    private static final String HARBOR_URL = "

    private HttpClient httpClient;

    public HarborClient() {
        this.httpClient = HttpClient.newBuilder().build();
    }

    public String sendRequest(String url) throws Exception {
        HttpRequest request = HttpRequest.newBuilder()
                .uri(new URI(url))
                .header("Authorization", "Bearer token")
                .build();

        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
        return response.body();
    }
}

上述代码创建了一个HarborClient类，其中的sendRequest方法用于发送HTTP请求到Harbor，并返回响应内容。

接下来，我们可以使用Harbor的API来连接和操作Harbor中的镜像。以下是一些示例代码：

import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.List;

public class HarborClient {

    // ...

    public List<Repository> listRepositories() throws Exception {
        String url = HARBOR_URL + "/projects";
        String response = sendRequest(url);

        ObjectMapper objectMapper = new ObjectMapper();
        return objectMapper.readValue(response, new TypeReference<List<Repository>>() {});
    }

    public List<String> getTags(String repository) throws Exception {
        String url = HARBOR_URL + "/repositories/" + repository + "/tags";
        String response = sendRequest(url);

        ObjectMapper objectMapper = new ObjectMapper();
        return objectMapper.readValue(response, new TypeReference<List<String>>() {});
    }

    public Image getImage(String repository, String tag) throws Exception {
        String url = HARBOR_URL + "/repositories/" + repository + "/tags/" + tag;
        String response = sendRequest(url);

        ObjectMapper objectMapper = new ObjectMapper();
        return objectMapper.readValue(response, Image.class);
    }

    public boolean pushImage(String repository, String tag, Image image) throws Exception {
        String url = HARBOR_URL + "/repositories/" + repository + "/tags/" + tag;
        String requestBody = new ObjectMapper().writeValueAsString(image);

        HttpRequest request = HttpRequest.newBuilder()
                .uri(new URI(url))
                .header("Authorization", "Bearer token")
                .header("Content-Type", "application/json")
                .POST(HttpRequest.BodyPublishers.ofString(requestBody))
                .build();

        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
        return response.statusCode() == 201;
    }
}

上述代码中的listRepositories方法用于获取Harbor中的所有镜像仓库列表，getTags方法用于获取指定仓库的所有标签，getImage方法用于获取指定仓库和标签的镜像信息，pushImage方法用于推送镜像到指定仓库和标签。

以上就是使用Java连接Harbor的基本步骤和示例代码。通过这些代码，我们可以连接到Harbor并对镜像仓库进行操作。在实际应用中，可以根据具体需求进行相应的扩展和调整。