Uploading and Running Lambda function in AWS

Main.go

package main

import (

"fmt"

"encoding/json"

"log"

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

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

)

func main() {

lambda.Start(handler)

}

func handler(request events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error) {

var person Person

//json request body se nikaal ke person var me rakh denge

err := json.Unmarshal([]byte(request.Body), &person)

if err !=nil {

return events.APIGatewayProxyResponse{}, err

}

//ab person se firstname aur lastname nikaal ke msg bana lenge

msg := fmt.Sprintf("Hello %v %v", *person.FirstName, *person.LastName)

responseBody := ResponseBody{

Message: &msg,

}

jbytes, err := json.Marshal(responseBody)

if err !=nil {

return events.APIGatewayProxyResponse{}, err

}

log.Println("hello world Nihal")

response := events.APIGatewayProxyResponse{

StatusCode: 200,

Body: string(jbytes),

}

return response, nil

}

type Person struct {

FirstName *string `json:"firstName"`

LastName *string `json:"lastName"`

}

type ResponseBody struct {

Message *string `json:"message"`

}

Run command : GOARCH=amd64 GOOS=linux go build main.go 

(This command will set the OS as linux and run build which will generate main file) 

 Once the main file is created and we can create a zip of this main and upload it to lambda. 

 Configure API-gateway with the above lambda. 

 Through Postman send the post request. { "firstName" : "Nikhillll2", "lastName" : "Nihallll2" }