The API 2.0 will not be available for the data subscription SDK of Tencent Cloud Data Transmission Service (DTS). Data subscription SDK 2.8.0 and earlier versions use the API 2.0 for authentication, and thus will be affected when the API 2.0 is deprecated.

Please follow the steps below to upgrade the applications you have consumed through the SDK in time to avoid the impact of API 2.0 deprecation.

Step 1. Check the SDK version

Check the version of the used SDK you have downloaded from Data Subscription SDK.
Check the SDK version as follows:

• Check the package name of the SDK you have used, which contains the version number, such as binlogsdk-2.8.0-jar-with-dependencies.jar.
• Check the value of SDK_VERSION. If the SDK package has been renamed, run the unzip command to decompress the package and check the value of SDK_VERSION in the tencentSubscribe.properties file.

If the version number of your data subscription SDK is 2.8.0 or smaller, go to Step 2.

Step 2. Upgrade the SDK

1. Download the latest SDK from Data Subscription SDK and replace SDK 2.8.0 and earlier versions with it.
2. After the replacement, refer to the following "Code modification starts" to add a line of code to set region for subscription channel.

package com.qcloud.biz;
import com.qcloud.dts.context.NetworkEnv;
import com.qcloud.dts.context.SubscribeContext;
import com.qcloud.dts.message.ClusterMessage;
import com.qcloud.dts.message.DataMessage;
import com.qcloud.dts.subscribe.ClusterListener;
import com.qcloud.dts.subscribe.DefaultSubscribeClient;
import com.qcloud.dts.subscribe.SubscribeClient;
import java.util.List;
public class Main {
    public static void main(String[] args) throws Exception {

        SubscribeContext context=new SubscribeContext();

        context.setSecretId("AKID-522dabxxxxxxxxxxxxxxxxxx");
        context.setSecretKey("AKEY-0ff4cxxxxxxxxxxxxxxxxxxxx");
        /*****************Code modification starts****************/
        // If you do not set the `region` parameter, the API 2.0 will still be used for authentication even after it is deprecated.
        // However, the authentication via API 2.0 will fail then, so the SDK will not work properly.
        // Set `region` for subscription channel.
        context.setRegion("ap-chongqing");
        /*****************Code modification ends******************/


        // Create a client
        SubscribeClient client=new DefaultSubscribeClient(context);
        // Create a subscription listener
        ClusterListener listener= new ClusterListener() {
            @Override
            public void notify(List<ClusterMessage> messages) throws Exception {
                // Consume subscribed data
                for(ClusterMessage m:messages){
                    for(DataMessage.Record.Field f:m.getRecord().getFieldList()){
                        if(f.getFieldname().equals("id")){
                            System.out.println("seq:"+f.getValue());
                        }
                        DataMessage.Record record  = m.getRecord();
                    }
                    // Acknowledge consumption
                    m.ackAsConsumed();
                }
            }
            @Override
            public void onException(Exception e){
                System.out.println("listen exception"+e);
            }};
        // Add a listener
        client.addClusterListener(listener);
        // Configure requested subscription channel
        client.askForGUID("dts-channel-r0M8kKsSyRZmSxQt");
        // Start the client
        client.start();
    }
}