Java Function Template

Java Function

The following is a sample code template of a Java function.

Each method corresponds to a specific trigger event, prints event information, and returns a response. You can create triggers and change the function handler to test Java functions.

Download the Java SDK to a local development environment, and decompress the SDK package. For complete Java function development example, see Developing a Java Event Function and Developing an HTTP Function Using Java.

package com.huawei.demo;
import com.huawei.services.runtime.Context;
import com.huawei.services.runtime.entity.apig.APIGTriggerEvent;
import com.huawei.services.runtime.entity.apig.APIGTriggerResponse;
import com.huawei.services.runtime.entity.dis.DISTriggerEvent;
import com.huawei.services.runtime.entity.dms.DMSTriggerEvent;
import com.huawei.services.runtime.entity.lts.LTSTriggerEvent;
import com.huawei.services.runtime.entity.smn.SMNTriggerEvent;
import com.huawei.services.runtime.entity.timer.TimerTriggerEvent;
import com.huawei.services.runtime.entity.eventgrid.EventGridTriggerEvent;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;

public class TriggerTests {
  public APIGTriggerResponse apigTest(APIGTriggerEvent event, Context context) {
    System.out.println(event);
    Map<String, String> headers = new HashMap<>();
    headers.put("Content-Type", "application/json");
    return new APIGTriggerResponse(200, headers, event.toString());
  }

  public String smnTest(SMNTriggerEvent event, Context context) {
    System.out.println(event);
    return "ok";
  }

  public String dmsTest(DMSTriggerEvent event, Context context) {
    System.out.println(event);
    return "ok";
  }

  public String timerTest(TimerTriggerEvent event, Context context) {
    System.out.println(event);
    return "ok";
  }

  public String disTest(DISTriggerEvent event, Context context) throws UnsupportedEncodingException {
    System.out.println(event);
    System.out.println(event.getMessage().getRecords()[0].getRawData());
    return "ok";
  }

  public String ltsTest(LTSTriggerEvent event, Context context) throws UnsupportedEncodingException {
    System.out.println(event);
    System.out.println("raw data: " + event.getLts().getRawData());
    return "ok";
  }

  public String eventgridTest(EventGridTriggerEvent event, Context context){
    System.out.println(event);return "ok";
  }
}