Lambda functions in a local development environment

main.go

//_LAMBDA_SERVER_PORT=3000 go run main.go
package main

import (
	"encoding/json"
	"github.com/aws/aws-lambda-go/lambda"
)


type Data struct {
	A, B int64
}

func suma(a, b int64) int64 {
	return a + b
}

func handler(in interface{} ) (int64, error) {

	var d Data

	raw := []byte(in.(string))
	if err := json.Unmarshal(raw, &d); err != nil {
        panic(err)
	}
	
	return suma(d.A, d.B), nil

}

func main() {
  lambda.Start(handler)
}

main2.go

package main

import (
  "fmt"
  "log"
  "github.com/davecgh/go-spew/spew"
  "github.com/djhworld/go-lambda-invoke/golambdainvoke"
)

func main() {
	
	jsondata := `{
		"a": 2,
		"b": 3
	}`

	response, err := golambdainvoke.Run(3000, jsondata)
	if err != nil {
		spew.Dump(err)
		log.Fatal(err)
	}
	fmt.Println(string(response))

}