Connect local dynamodb using Golang

main.go

package main

import (
	"log"
	"net/http"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
)

type appContext struct {
	sess  *session.Session
	dbSvc *dynamodb.DynamoDB
}

func init() {
	log.SetPrefix("appxxx => ")
	log.SetFlags(log.Lmicroseconds | log.Lshortfile)

	valid.SetFieldsRequiredByDefault(true)
}

func main() {

	sess, err := session.NewSession(&aws.Config{
		Region:   aws.String("us-west-2"),
		Endpoint: aws.String("http://localhost:8000")})
	if err != nil {
		log.Println(err)
		return
	}
	dbSvc := dynamodb.New(sess)

	result, err := dbSvc.ListTables(&dynamodb.ListTablesInput{})
	if err != nil {
		log.Println(err)
		return
	}

	log.Println("Tables:")
	for _, table := range result.TableNames {
		log.Println(*table)
	}

	router := NewRouter(&appContext{sess: sess, dbSvc: dbSvc})

	// Start web server
	log.Println("Starting www...")
	log.Fatal(http.ListenAndServe(":9001", router))
}

Thanks @Tamal!

When the Docker container isn't running, the code blocks indefinitely at dbSvc.ListTables. As a Go beginner, I first had to figure out how to configure a timeout, because I couldn't find anything about timeout configuration in the SDK documentation. In case others are interested in the solution:

// ...
timeoutCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
result, err := dbSvc.ListTablesWithContext(timeoutCtx, &dynamodb.ListTablesInput{})
if err != nil {
	log.Println(err)
	return
}
// ...

Thanks @philippgille!