AWS Lambda函数在S3上传上触发SNS主题

Question

我对SNS和Lambda相当陌生。我已经成功创建了一个SNS主题，并且能够发送文本消息。上传文件时，我确实设置了S3事件。但是，我想更改该消息的文本，因此从应该向SNS主题发送消息的蓝图创建了Lambda函数。这是设计器的屏幕截图这是我正在使用的蓝图代码：from __future__ import print_functionimport jsonimport urllibimport boto3print('Loading message function...')    def send_to_sns(message, context):            # This function receives JSON input with three fields: the ARN of an SNS topic,        # a string with the subject of the message, and a string with the body of the message.        # The message is then sent to the SNS topic.        #        # Example:        #   {        #       "topic": "arn:aws:sns:REGION:123456789012:MySNSTopic",        #       "subject": "This is the subject of the message.",        #       "message": "This is the body of the message."        #   }            sns = boto3.client('sns')        sns.publish(            TopicArn=message['arn:aws:sns:MySNS_ARN'],            Subject=message['File upload'],            Message=message['Files uploaded successfully']        )            return ('Sent a message to an Amazon SNS topic.')

Answer 1

我发现一个有效的NodeJs示例：

console.log('Loading function');

var AWS = require('aws-sdk');  

AWS.config.region = 'us-east-1';

exports.handler = function(event, context) {  

    console.log("\n\nLoading handler\n\n");

    var sns = new AWS.SNS();

    sns.publish({

        Message: 'File(s) uploaded successfully',

        TopicArn: 'arn:aws:sns:_my_ARN'

    }, function(err, data) {

        if (err) {

            console.log(err.stack);

            return;

        }

        console.log('push sent');

        console.log(data);

        context.done(null, 'Function Finished!');  

    });

};