Basic interaction with DynamoDB

main.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"hackernewsletter/db"
+
+	"github.com/aws/aws-sdk-go-v2/config"
+	"github.com/aws/aws-sdk-go-v2/service/dynamodb"
+)
+
+type Config struct {
+	TABLE_NAME string
+}
+
+func main() {
+	table := flag.String("t", "", "The name of the table")
+	flag.Parse()
+
+	if *table == "" {
+		fmt.Println("You must specify a table name (-t TABLE)")
+	}
+
+	cfg, err := config.LoadDefaultConfig(context.TODO(), config.WithRegion("eu-central-1"))
+	if err != nil {
+		panic("Unable to load SDK config, " + err.Error())
+	}
+
+	client := dynamodb.NewFromConfig(cfg)
+
+	input := &dynamodb.DescribeTableInput{
+		TableName: table,
+	}
+
+	new_table := db.Table{client, *table}
+
+	resp, err := db.GetTableInfo(context.TODO(), client, input)
+	if err != nil {
+		println(("Table not found. Creating it..."))
+		_, new_err := db.CreateTable(new_table)
+		if new_err != nil {
+			panic("Failed creating table " + *table)
+		}
+
+		resp, err = db.GetTableInfo(context.TODO(), client, input)
+	}
+
+	fmt.Printf("Table %v has %v elements", *table, resp.Table.ItemCount)
+
+	var news []db.News
+
+	news = append(news, db.News{Id: 1, Title: "First", Url: "www.first.com"})
+	news = append(news, db.News{Id: 2, Title: "Second", Text: "Second text"})
+
+	db.AddNewsBatch(new_table, news)
+}