Arunmainthan’s gists

Arunmainthan / generateS3PresignedURL.ts

Last active December 17, 2019 11:26

Generate S3 Presigned URL

	import AWS = require('aws-sdk');
	var axios = require('axios');
	import { readFileSync } from 'fs'
	import * as request from 'request'
	import { readFile } from 'fs'
	import { promisify } from 'util';

	const S3_BUCKET = `your-s3-bucket`;

Arunmainthan / handler.py

Last active December 15, 2019 11:05

serverless.yml IAM permissions

	import json
	import boto3


	import json
	import boto3


	def hello(event, context):
	# TODO implement

Arunmainthan / signature.js

Last active December 16, 2019 21:07

slack signature verification

	verifySignature(slackSignature, slackTimestamp, body) {

	const slackSigningSecret = process.env.SLACK_SIGNING_SECRET;
	console.log('slackTimestamp: ', slackTimestamp);
	console.log('slackSignature: ', slackSignature);

	const timestamp = slackTimestamp;
	const time = Math.floor(new Date().getTime()/1000);

	if (Math.abs(time - timestamp) > 300) {

Arunmainthan / sendEMail.py

Last active November 20, 2020 09:14

Send Email via SES

	from __future__ import print_function
	import boto3
	import json
	import decimal
	from datetime import datetime
	from boto3.dynamodb.conditions import Key, Attr
	from botocore.exceptions import ClientError

	ses = boto3.client(
	'ses',

Arunmainthan / generateAPIGatewaySignatureManually.js

Created December 18, 2019 23:15

Generate AWS signature to call API Gateway end point

	var aws4 = require('aws4');
	var signature = aws4.sign({
	host: '',
	method: 'GET',
	path: '/development/hello',
	headers: {
	'x-apigw-api-id': ''
	},
	region: 'ap-southeast-2',
	service: 'execute-api'

Arunmainthan / S3Api.sh

Created December 20, 2019 03:58

S3API


	aws s3api put-object --bucket first-stack-mys3bucket --key car.jpg --body ~/Downloads/car.jpg --tagging 'clientId=123' --profile test-cfn-user

Arunmainthan / downloadFile.js

Created December 20, 2019 14:26

Nodejs Express Download file from s3

	const express = require('express');
	const app = express();
	const request = require('request');

	app.get('/download-file', function (req, res) {
	// sdk way
	var s3 = new AWS.S3({});
	var options = {
	Bucket: 'my-bucket-name',
	Key: file,

Arunmainthan / template.json

Created January 3, 2020 13:09 — forked from mlabouardy/template.json

EC2 Instance with IAM Role using CloudFormation

	{
	"AWSTemplateFormatVersion" : "2010-09-09",
	"Description" : "Attach IAM Role to an EC2",
	"Parameters" : {
	"KeyName" : {
	"Description" : "EC2 Instance SSH Key",
	"Type" : "AWS::EC2::KeyPair::KeyName"
	},
	"InstanceType" : {
	"Description" : "EC2 instance specs configuration",

Arunmainthan / encodedText.txt

Last active January 7, 2020 16:12

Upload base64 encoded image string to s3

{"e_id":6969,"base64":"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

Arunmainthan / cloudSettings

Last active January 22, 2021 21:12

Visual Studio Code Settings Sync Gist

{"lastUpload":"2021-01-22T18:38:32.761Z","extensionVersion":"v3.4.3"}