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URI all you have to do is to sign a request like: https://s3.amazonaws.com/yourbucket/key? response-content-disposition=inline& X-Amz-Algorithm=AWS4-HMAC-SHA256& X-Amz-Credential=AKIAJWWH7EGSUBWE34IQ/20181228/us-east-1/s3/aws4_request& X-Amz-Date=20181228T074135Z& X-Amz-Expires=86400&X-Amz-SignedHeaders=host& X-Amz-Signature=b3143f8442812e176fd61838813a33f53cfd7e198e1c6e68fab5d03d4a642403   and set it as src attribue to a video element. Player component import React, { Component } from 'react'; import PropTypes from 'prop-types'; const AWS_SERVICE = 's3'; const crypto = require('crypto'); Date.prototype.toYMDString = function() { let year = this.getFullYear().toString(); let month = this.getUTCMonth() + 1; if (month < 10) month = "0" + month; let day = this.getUTCDate(); if (day < 10) day = "0" + day; return String(year) + String(month) + S

Evaporate and config s3 bucket and IAM user EvaporateJS Config AWS s3 bucket Managing Access Permissions to Your Amazon S3 Resources User Access Key In summary, create a s3 bucket, set up CORS settings and bucket policy. <CORSConfiguration> <CORSRule> <AllowedOrigin>https://*.yourdomain.com</AllowedOrigin> <AllowedOrigin>http://*.yourdomain.com</AllowedOrigin> <AllowedMethod>PUT</AllowedMethod> <AllowedMethod>POST</AllowedMethod> <AllowedMethod>DELETE</AllowedMethod> <AllowedMethod>GET</AllowedMethod> <ExposeHeader>ETag</ExposeHeader> <AllowedHeader>*</AllowedHeader> </CORSRule> </CORSConfiguration> { "Version": "2012-10-17", "Id": "Policy145337ddwd", "Statement": [ { "Sid": "&quo

Lambda function(js) const AWS = require('aws-sdk'); const cognito = new AWS.CognitoIdentityServiceProvider(); function getUser(Username) { return new Promise((resolve, reject) => { cognito.adminGetUser({ UserPoolId: process.env.COGNITO_USER_POOL_ID, Username: Username }, (err, data) => { if (err) reject(err.stack); else resolve(data.UserAttributes[2].Value); }); }); } async function getEmail(Username) { return await getUser(Username); } exports.handler = async (event) => { console.log(await getEmail('abcdef')); console.log(await getEmail('hijklmn')); console.log('done'); return 'ok'; }; set Execution role with correct policy as below descripted. set an environment 'COGNITO_USER_POOL_ID' with the user pool id. Role policy { "Version": "2012-10-17", "Statement&

Main codes function getYMD(d) { let r = d.getFullYear().toString(); let m = d.getUTCMonth() + 1; if (m < 10) m = "0" + m.toString(); else m = m.toString(); r = r + m; let day = d.getUTCDate(); if (day < 10) day = "0" + day.toString(); else day = day.toString(); r = r + day; return r; } function getTZ(d) { let r = d.getFullYear().toString(); let m = d.getUTCMonth() + 1; if (m < 10) m = "0" + m.toString(); else m = m.toString(); r = r + m; let day = d.getUTCDate(); if (day < 10) day = "0" + day.toString(); else day = day.toString(); r = r + day + "T"; let h = d.getUTCHours(); if (h < 10) h = "0" + h.toString(); else h = h.toString(); r = r + h; let min = d.getUTCMinutes(); if (min < 10) min = "0" + min.toString(); else min =