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load_items.go
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load_items.go
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"log"
"os"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/dynamodb"
"github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute"
)
// Create structs to hold info about new item
type ItemInfo struct {
Plot string `json:"plot"`
Rating float64 `json:"rating"`
}
type Item struct {
Year int `json:"year"`
Title string `json:"title"`
Info ItemInfo `json:"info"`
}
// Get table items from JSON file
func getItems() []Item {
raw, err := ioutil.ReadFile("./.movie_data.json")
if err != nil {
fmt.Println(err.Error())
os.Exit(1)
}
var items []Item
json.Unmarshal(raw, &items)
return items
}
func main() {
// Initialize a session in us-west-2 that the SDK will use to load
// credentials from the shared credentials file ~/.aws/credentials.
sess, err := session.NewSession(&aws.Config{
Region: aws.String("us-west-2")},
)
if err != nil {
log.Fatalf("Error creating session: %s", err)
}
// Create DynamoDB client
svc := dynamodb.New(sess)
// Get table items from .movie_data.json
items := getItems()
// Add each item to Movies table:
for _, item := range items {
av, err := dynamodbattribute.MarshalMap(item)
if err != nil {
log.Fatalf("Got error marshalling map: %s", err)
}
// Create item in table Movies
input := &dynamodb.PutItemInput{
Item: av,
TableName: aws.String("Movies"),
}
_, err = svc.PutItem(input)
if err != nil {
log.Fatalf("Got error calling PutItem: %s", err)
}
fmt.Println("Successfully added '", item.Title, "' (", item.Year, ") to Movies table")
}
}