SamanShafigh

package main

import (
	"fmt"
	"math/rand"

	"github.com/aws/aws-lambda-go/lambda"
)

// InEvent defines your lambda input data structure,

SamanShafigh

package main

import (
	"fmt"

	"github.com/aws/aws-lambda-go/lambda"
)

// Event defines your lambda input/output data structure,
type Event struct {

SamanShafigh

package main

import (
	"fmt"

	"github.com/aws/aws-lambda-go/lambda"
)

// Event defines your lambda input/output data structure,
type Event struct {

SamanShafigh

package main

import (
	"fmt"

	"github.com/aws/aws-lambda-go/lambda"
)

// Event defines your lambda input and output data structure,
// and of course you can have different input and output data structure

SamanShafigh

{
  "Comment": "A step function to test some lambda functions in Go",
  "StartAt": "Step1",
  "States": {
    "Step1": {
      "Type": "Task",
      "Resource": "arn:aws:lambda:ap-southeast-2:xyz:function:lambda-f1",
      "Next": "Step2"
    },
    "Step2": {

SamanShafigh

package main

import "github.com/aws/aws-lambda-go/lambda"

type Event struct {
  Payload string `json:"payload"`
}

func HandleRequest(e Event) (Event, error) {
  return Event{"Hello World"}, nil

SamanShafigh

// Async using call back
var addA = function (a, b, cb) {
  setTimeout (() => {
    cb(a + b);
  }, 0);
};

// How to use it :D
addA(2, 3, (result) => {
  console.log(result)

SamanShafigh

// Async using promise 
var addB = function (a, b) {
  return new Promise((resolve, reject) => {
    setTimeout (() => { 
      resolve(a + b); 
    }, 0);
  });
};

// How to use it :D

SamanShafigh

// We can also use async/await which is a Syntactic Sugar For Promises
var addC = function (a, b) {
  return new Promise((resolve, reject) => {
    setTimeout (() => { 
      resolve(a + b); 
    }, 0);
  });
};

SamanShafigh

// :)
// Let say you can perform these 3 actions in parallel, then you can run them 
// all at once and aggregate the result which is good
var p1 = addB(2, 3)
var p2 = addB(2, 3)
var p3 = addB(2, 3)
Promise.all([p1, p2, p3]).then(([r1, r2, r3]) => {
  console.log(r1, r2, r3)
})