通过java代码清除akamai中的缓存URL？

Question

在我的项目中，每当调用API时，它都会在Akamai中缓存。但是当客户端通过UI更改数据库中的某些内容时。我们需要在AKAMAI中使缓存的API响应无效，并用新的json数据填充它。我在互联网上找到了一些链接：akamai-purging但是我无法理解他们正在谈论的这个链接中的cp代码是什么？

这是我给出的示例代码：405 Not Allowed

码：

public static void main(String[] args) throws IOException, RequestSigningException {

    URL url = new URL("https://xxx-host-name-/scripts.4535eaf743502b25ba3a.js");

    HttpTransport HTTP_TRANSPORT = new ApacheHttpTransport();
    HttpRequestFactory requestFactory = HTTP_TRANSPORT.createRequestFactory();
    AkamaiPostData postData = new AkamaiPostData();
    postData.setHostname(AkamaiConstants.SITE_HOST_NAME);

    Gson gson = new Gson();
    String postDataJSON = gson.toJson(postData);
    byte[] contentBytes = postDataJSON.getBytes();
    HttpContent content = new ByteArrayContent("application/json", contentBytes);
    HttpRequest request = requestFactory.buildDeleteRequest(new GenericUrl(url));
    HttpHeaders headers = request.getHeaders();
    headers.set("Host", "xxx-host-name-");

    ClientCredential credential = new DefaultCredential(AkamaiConstants.CLIENT_TOKEN, AkamaiConstants.ACCESS_TOKEN, AkamaiConstants.CLIENT_SECRET);
    RequestSigner signer = new EdgeGridV1Signer(Collections.EMPTY_LIST, 1024 * 2);
    HttpRequest signedRequest = signer.sign(request, credential);
    HttpResponse response = signedRequest.execute();
    String result = response.parseAsString();
    System.out.println("result::" + result);
}

Answer 1

清除Akamai中的内容需要API凭据。您可以在Akamai Fast Purge API网站上了解更多关于Akamai Developer的信息。您需要联系Akamai客户团队或在Luna Control Center中配置所需的API访问权限。 API的文档将为您提供理解API以及如何配置相应凭据的链接。

作为一小部分跟进，CP代码是Akamai的唯一标识符，用于将特定域或服务绑定到您的合同以进行计费。除了访问API所需的凭据之外，您还必须知道Akamai支持的域使用的CP代码才能成功调用Fast Purge API。

Answer 2

所以最后我能够做到这一点。我使用的这种方法是Akamai提供的快速清洗方法。

代码示例：

public class AkamaiFastPurge {

    private static final String HTTPS = "https";

    public static void main(String... s) throws URISyntaxException, IOException, RequestSigningException {


        ClientCredential credential = ClientCredential.builder()
                .accessToken("Your-access-token")
                .clientToken("Your-client-token")
                .clientSecret("Your-client-secret")
                .host("Your-host")
                .build();


        ArrayList arrayList = new ArrayList<String>();

        // You can add multiple urls.
        arrayList.add("*****-Actual-url-you-want-to-purge*****");

        HttpResponse response = invalidateUrls(credential, arrayList, "production");

        System.out.println(response.getStatusCode());
        System.out.println(response.getStatusMessage());
    }

    public static HttpResponse invalidateUrls(ClientCredential clientCredential, List<String> urls, String network) {

        HttpTransport httpTransport = new ApacheHttpTransport();
        HttpRequestFactory requestFactory = httpTransport.createRequestFactory();

        HttpRequest request = null;

        try {

            // This is fast purge approach
            URI uri = new URI(HTTPS, "api.ccu.akamai.com", "/ccu/v3/invalidate/url/" + network, null, null);

            String requestBody = getStringRequestBody(urls);

            request = requestFactory.buildPostRequest(new GenericUrl(uri), ByteArrayContent.fromString("application/json", requestBody));
            GoogleHttpClientEdgeGridRequestSigner requestSigner = new GoogleHttpClientEdgeGridRequestSigner(clientCredential);
            requestSigner.sign(request);

            return request.execute();

        } catch (IOException e) {
//            log.error("IOException in Akamai Utility", e);
        } catch (RequestSigningException e) {
//            log.error("RequestSigningException in Akamai Utility", e);
        } catch (URISyntaxException e) {
//            log.error("UriSyntaxException in Akamai Utility", e);
        }

        return null;
    }

    public static String getStringRequestBody(List<String> urls) {

        Map<String, List<String>> akamaiRequestMap = Maps.newHashMap();
        akamaiRequestMap.put("objects", urls);

        return new Gson().toJson(akamaiRequestMap);
    }
}

我用过它的依赖关系：

 <dependency>
        <groupId>com.akamai.edgegrid</groupId>
        <artifactId>edgegrid-signer-google-http-client</artifactId>
        <version>3.0.1</version>
    </dependency>
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.8.5</version>
    </dependency>
</dependencies>