[英]Nodejs AWS Lambda s3 getObject method returns nothing
尝试从存储在 s3 存储桶中的 csv 中获取内容时使用的脚本
const mysql = require("mysql");
const fs = require("fs");
const { google } = require("googleapis");
const AWS = require("aws-sdk");
const client = new AWS.SecretsManager({ region: "eu-west-1" });
const analyticsreporting = google.analyticsreporting("v4");
const csv = require('ya-csv')
const fastCsv = require('fast-csv')
const s3 = new AWS.S3();
const getParams = {
Bucket: 'data',
Key: 'athena_test/nameplate.csv'
};
exports.handler = async (context, event) => {
const data = await s3.getObject(getParams, function (err, data){
if(err){console.log("ERROR: ",err)}
else {return data}
})
console.log(data.Body)
}
控制台日志返回 undefined 而不是 csv 的内容
嘿,你可以试试这个:-
const csv = require('@fast-csv/parse');
const s3Stream = await s3.getObject(params).createReadStream();
const data = await returnDataFromCSV();
console.log(data.Body);
const returnDataFromCSV =()=> {
let promiseData = new Promise((resolve, reject) => {
const parser = csv
.parseStream(csvFile, { headers: true })
.on("data", (data) => {
console.log('Parsed Data:-', data);
})
.on("end", ()=> {
resolve("CSV finished here");
})
.on("error",()=> {
reject("if failed");
});
});
try {
return await promiseData;
} catch (error) {
console.log("Get Error: ", error);
return error;
}
}
创建流: https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/Request.html#createReadStream-property
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