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CAST supports DynamoDB via its Node.js extension. Details about how this support is provided for Node.js source code is discussed below.

Objects

IconDescription

Node.js DynamoDB Endpoint

Node.jsDynamoDB Table

Links

APILink TypeFunction api v2

Commands from SDK V3

imported from '@aws-sdk/client-dynamodb'







DynamoDB

No Link

  • createGlobalTable

  • createTable

useSelectLink
  • createBackup

  • getItem

  • batchGetItem

  • transactWriteItems

  • batchWriteItem

  • restoreTableToPointInTime

CreateTableCommand

BatchGetItemCommand

GetItemCommand

useDeleteLink

  • deleteTable

  • deleteItem

  • transactWriteItems

  • batchWriteItem

DeleteTableCommand
DeleteItemCommand
useUpdateLink

  • transactWriteItems

  • batchWriteItem

  • updateItem

  • updateTable

  • putItem
  • restoreTableToPointInTime
  • restoreTableFromBackup
PutItemCommand
UpdateItemCommand
UpdateCommand






DocumentClient

useSelectLink
  • batchGet
  • transactGet
  • get
  • scan
  • query
  • batchWrite
  • transactWrite

useDeleteLink
  • batchWrite
  • transactWrite
  • delete

useUpdateLink
  • put
  • update
  • batchWrite
  • transactWrite

Code samples

Api v2 sample

These declaration will establish a connection to the database located on localhost

var AWS = require("aws-sdk");

AWS.config.update({
  region: "us-west-2",
  endpoint: "http://localhost:8000"
});

var dynamodb = new AWS.DynamoDB();

These declarations will create a useUpdateLink from code to the database "myDatabase".

/* This example adds a new item to the Music table. */

var params = {
  Item: {
    "AlbumTitle": {
      S: "Somewhat Famous"
    }, 
    "Artist": {
      S: "No One You Know"
    }, 
    "SongTitle": {
      S: "Call Me Today"
    }
  }, 
  ReturnConsumedCapacity: "TOTAL", 
  TableName: "Music"
};
dynamodb.putItem(params, function(err, data) {
  if (err) console.log(err, err.stack); // an error occurred
  else     console.log(data);           // successful response
});

What results can you expect?

Once the analysis/snapshot generation has completed, you can view the results in the normal manner (for example via CAST Enlighten):

Api v3 sample

These declaration will establish a connection to the database located on localhost, create two tables, and create links.

const {DynamoDBClient} = require("@aws-sdk/client-dynamodb");
const REGION = "us-east-1";
const ddbClient = new DynamoDBClient({region: REGION,
                                      endpoint: "http://localhost:8000" });
export { ddbClient };

const {CreateTableCommand} = require("@aws-sdk/client-dynamodb");
const {PutItemCommand } = require("@aws-sdk/client-dynamodb");
const {DeleteTableCommand } = require("@aws-sdk/client-dynamodb");

// Set the parameters
export const params_put = {
  TableName: "TABLE_NAME_2",
  Item: {
    CUSTOMER_ID: { N: "001" },
    CUSTOMER_NAME: { S: "Richard Roe" },
  },
};

export const create = async () => {
  try {
    const data = await ddbClient.send(new CreateTableCommand({TableName: "TABLE_NAME"}));
    console.log("Table Created", data);
    return data;
  } catch (err) {
    console.log("Error", err);
  }
};
create();

export const put_item = async () => {
  try {
    const data = await ddbClient.send(new PutItemCommand(params_put));
    console.log("Table Updated", data);
    return data;
  } catch (err) {
    console.log("Error", err);
  }
};
put_item();

export const delete_item = async () => {
  try {
    const data = await ddbClient.send(new DeleteTableCommand({TableName: "TABLE_NAME"}));
    console.log("Success, table deleted", data);
    return data;
  } catch (err) {
      console.log("Error", err);
    }
};
delete_item();

What results can you expect?

Once the analysis/snapshot generation has completed, you can view the results in the normal manner (for example via CAST Enlighten):

Analysis of the last code sample

  • No labels