Amazon SQS調用lambda函數

Question

我正在嘗試通過Amazon SGS觸發器來觸發功能。 觸發器工作正常，但是消息未傳遞到my函數中。

這是我的lambda函數

import java.text.SimpleDateFormat;
import java.util.Calendar;

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.LambdaLogger;
import com.amazonaws.services.lambda.runtime.RequestHandler;

public class x implements RequestHandler<RequestClass, ResponseClass> {
    private LambdaLogger logger;

    public void log(String message) {
        Calendar cal = Calendar.getInstance();
        SimpleDateFormat sdf = new SimpleDateFormat("MM-dd-yyyy HH:mm:ss");
        logger.log(sdf.format(cal.getTime()) + "  " + message+"\n");
    }

    public ResponseClass handleRequest(RequestClass request, Context context) {
        this.logger = context.getLogger();
        log("Request " + request);
        if (request == null || (request.getFilename() == null && request.getRecords() == null)) {
            log("No file was passed in");
            throw new RuntimeException("No file was passed in");
        }


        return new ResponseClass(null);
    }
}

和請求類是https://pastebin.com/Q1G6bnrA

當我看到日志時，記錄始終為空。

Answer 1

您是否照顧過Lambda的執行角色權限？

從這里 ：

執行角色權限

Lambda需要以下權限才能管理Amazon SQS隊列中的消息。 將它們添加到函數的執行角色中。

• sqs：ReceiveMessage
• sqs：DeleteMessage
• sqs：GetQueueAttributes

Answer 2

以下代碼對我來說很好用：

package au.com.redbarn.aws.lambda2lambda_via_sqs;

import java.util.List;

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;
import com.amazonaws.services.lambda.runtime.events.SQSEvent;
import com.amazonaws.services.lambda.runtime.events.SQSEvent.SQSMessage;

import lombok.extern.log4j.Log4j2;

@Log4j2
public class SQSConsumerLambda implements RequestHandler<SQSEvent, String> {

    @Override
    public String handleRequest(SQSEvent input, Context context) {

        log.info("message received");

        List<SQSMessage> records = input.getRecords();

        for (SQSMessage record : records) {
            log.info(record.getBody());
        }

        return "Ok";
    }
}

也許嘗試使用SQSEvent ，而不是你自己的RequestClass 。