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load_items.go

Adds items from a JSON file to an Amazon DynamoDB table.

/* Copyright 2010-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved. This file is licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at http://aws.amazon.com/apache2.0/ This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package main import ( "encoding/json" "fmt" "io/ioutil" "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 { fmt.Println("Error creating session:") fmt.Println(err.Error()) os.Exit(1) } // 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 { fmt.Println("Got error marshalling map:") fmt.Println(err.Error()) os.Exit(1) } // Create item in table Movies input := &dynamodb.PutItemInput{ Item: av, TableName: aws.String("Movies"), } _, err = svc.PutItem(input) if err != nil { fmt.Println("Got error calling PutItem:") fmt.Println(err.Error()) os.Exit(1) } fmt.Println("Successfully added '",item.Title,"' (",item.Year,") to Movies table") } }

Sample Details

Service: dynamodb

Last tested: 2018-03-16

Author: Doug-AWS

Type: full-example

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