Client Development

public class Client {

    private String ip;
    public Client(String ip) {
        this.ip = ip;
    }

    @HafCall(ip = "ip", method = "TestMain.testService", exception = ClientException.class, timeout = "300")
    public void testCSAdd(int a, int b) throws ClientException {
        int res = TestMain.testService(a, b);
        System.out.println(res);
    }
}

The @HafCall annotation supports the following fields:

• ip: indicates the IP address of the offload node to which the function will be pushed down. It is mandatory. This field can be an IP address or a member variable name of the string type. Ensure that the member variable name is a valid IP address.
• method: indicates the accessed server function, which consists of the class name and function name. This parameter is mandatory.
• exception: indicates the exception thrown when the pushdown fails. This parameter is mandatory.
• timeout: indicates the timeout interval for pushing down the function. The default value is 1800s.

In client/server pushdown mode, both the client and server use an FST tool to serialize objects. If objects that cannot be directly serialized exist, specify serializers for the client and server; for details, see 3.

public class Client {
    @HafSerializer(clazz = Page.class, serializer = PageSerializer.class)
    @HafCall(ip = "ip", method = "NoMainService.getPageTest", exception = Exception.class)
    public Page getPage() throws Exception {
        Page page = NoMainService.getPageTest();
        return page;
    }
}

public class NoMainService {
    @HafSerializer(clazz = Page.class, serializer = PageSerializer.class)
    @HafService
    public static Page getPageTest() {
        Page page = new Page("testPage", 10);
        System.out.println(page);
        return page;
    }
}