This router is fully based on https://github.com/dimfeld/httptreemux it was modified for use on AWS Lambda and take all advantage on this

it's possible to use on local with builtin server NOT USE BUILTIN SERVER ON PRODUCTION

Usage

package main

import (
	"context"
	"fmt"
	"github.com/kedric/lambdarouter"
	"github.com/aws/aws-lambda-go/events"
	"log"
)

func Index(ctx context.Context, req events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error){
	return events.APIGatewayProxyResponse{
		StatusCode: 200,
		Body:     "Welcome!\n",
	}, nil
}

func Hello(ctx context.Context, req events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error) {
	return events.APIGatewayProxyResponse{
		StatusCode: 200,
		Body:       fmt.Sprintf("hello, %s!\n", req.PathParameters["name"]),
	}, nil
}

func main() {
	router := lambdarouter.New()
	router.GET("/", Index)
	router.GET("/hello/:name", Hello)

	router.Serve(":8080", nil)
}

Serve

Serve method on router check if AWS_EXECUTION_ENV is set in env if is not set start mux server with port passed in argument else call lambda.Start(...) from aws sdk

on mux server all path has prefixed by /:__stage__ when request oncomming the stage variable is stored in event.RequestContext.Stage

Stage Variables

if you need to pass a stageVariables to lambda with http handler add them on serv

exemple:

var variables = lambdarouter.StageVariables{
	"stagename": {
		"variablename":       "value",
	},
}

router.Serv(":8080", variables)

Authorizer

ON PROGRESS

For use authorizer add handler function by router.SetAuthorizer(handler)

func authorizer (ctx context.Context, request events.APIGatewayCustomAuthorizerRequestTypeRequest) (events.APIGatewayCustomAuthorizerResponse, error) {
	...
}

func main() {
	router := lambdarouter.New()
	router.SetAuthorizer(authorizer)
	router.Serve(":8080", nil)
}

When you use builtin server it was call befor handler and passed on request. When you deploy on lambda create spesific lambda with env variable AUTHORIZER = true.