DynamoDB

DynamoDB is a managed non-relational database service provided by Amazon. ToolJet has the capability to connect to DynamoDB for reading and writing data.

Connection

To establish a connection with the DynamoDB data source, you can either click on the + Add new Data source button located on the query panel or navigate to the Data sources page through the ToolJet dashboard.

ToolJet supports connecting to DynamoDB using three methods: IAM Credentials, AWS Instance Credentials, or AWS ARN Role.

When using IAM Credentials, you will need to provide the following information:

• Region
• Access key
• Secret key

It is recommended to create a dedicated IAM user for the database in order to have granular control over ToolJet's access levels.

To connect to DynamoDB using an AWS Instance Credentials, select the option to Use AWS Instance Credentials. This will utilize the IAM role attached to the EC2 instance where ToolJet is running. The WebIdentityToken parameter obtained from a successful login with an identity provider is used to access the metadata service of an ECS container and the EC2 instance.

If you prefer to use an AWS ARN Role, you will need to provide the following details:

• Region
• Role ARN

Querying DynamoDB

1. Click on + Add button of the query manager at the bottom panel of the editor.
2. Select the DynamoDB datasource added in previous step.
3. Choose the desired operation.
4. Click on the Preview button to preview the output or Click on the Run button to create and trigger the query.

tip

You can apply transformations to the query results. Refer to our transformations documentation for more information: link

Supported Operations

• List Tables
• Get Item
• Query Table
• Scan Table
• Delete Item
• Update Item
• Describe Table
• Create Table
• Put Item

List Tables

Returns an array of table names associated with the current account and endpoint. The output from List Tables is paginated, with each page returning a maximum of 100 table names.

Get Item

Retrieves a single item from a table. You must specify the primary key for the item that you want. You can retrieve the entire item, or just a subset of its attributes.

Required Parameter

• Table
• Key name

Example

{
    "Key": {
        "ForumName": {
            "S": "Amazon DynamoDB"
        },
        "Subject": {
            "S": "How do I update multiple items?"
        }
}

Query Table

Retrieves all items that have a specific partition key. You must specify the partition key value. You can retrieve entire items, or just a subset of their attributes. Optionally, you can apply a condition to the sort key values so that you only retrieve a subset of the data that has the same partition key. You can use this operation on a table, provided that the table has both a partition key and a sort key. You can also use this operation on an index, provided that the index has both a partition key and a sort key.

Required Parameter

• Query condition

Example

{
  "TableName": "Reply",
  "IndexName": "PostedBy-Index",
  "Limit": 3,
  "ConsistentRead": true,
  "ProjectionExpression": "Id, PostedBy, ReplyDateTime",
  "KeyConditionExpression": "Id = :v1 AND PostedBy BETWEEN :v2a AND :v2b",
  "ExpressionAttributeValues": {
    ":v1": { "S": "Amazon DynamoDB#DynamoDB Thread 1" },
    ":v2a": { "S": "User A" },
    ":v2b": { "S": "User C" }
  },
  "ReturnConsumedCapacity": "TOTAL"
}

Scan Table

Retrieves all items in the specified table or index. You can retrieve entire items, or just a subset of their attributes. Optionally, you can apply a filtering condition to return only the values that you are interested in and discard the rest.

Required Parameter

• Scan condition

Example

{ 
  "TableName": "<table_name>"
}

Delete Item

Deletes a single item from a table. You must specify the primary key for the item that you want to delete.

Required Parameter

• Table
• Key name

Example

{
  "Key": {
    "ForumName": {
      "S": "Amazon DynamoDB"
    },
    "Subject": {
      "S": "How do I update multiple items?"
    }
  },
  "ConditionExpression": "attribute_not_exists(Replies)",
  "ReturnValues": "ALL_OLD"
}

Update Item

Update an item in DynamoDB by specifying the primary key and providing new attribute values. If the primary key does not exist in the table then instead of updating it will insert a new row.

Required Parameter

• Update Condition

Example

{
  "TableName": "USER_DETAILS_with_local",
  "Key": {
    "USER_ID": 1,
    "USER_NAME": "Nick"
  },
  "UpdateExpression": "set USER_AGE = :age, USER_FEE = :fee",
  "ExpressionAttributeValues": {
    ":age": 40,
    ":fee": 230545
  }
}

Describe Table

This operation in DynamoDB retrieves metadata and configuration details about a specific table. It provides information such as the table's name, primary key schema, provisioned throughput settings, and any secondary indexes defined on the table.

Required Parameter

• Table

Create Table

This operation in DynamoDB enables you to create a new table by specifying its name, primary key schema, and optional configurations.

Required Parameter

• Table Parameters

Example

{
  "AttributeDefinitions": [
    {
      "AttributeName": "USER_ID",
      "AttributeType": "N"
    },
    {
      "AttributeName": "USER_FEE",
      "AttributeType": "N"
    }
  ],
  "KeySchema": [
    {
      "AttributeName": "USER_ID",
      "KeyType": "HASH"
    }
  ],
  "LocalSecondaryIndexes": [
    {
      "IndexName": "USER_FEE",
      "KeySchema": [
        {
          "AttributeName": "USER_ID",
          "KeyType": "HASH"
        },
        {
          "AttributeName": "USER_FEE",
          "KeyType": "RANGE"
        }
      ],
      "Projection": {
        "ProjectionType": "KEYS_ONLY"
      }
    }
  ],
  "ProvisionedThroughput": {
    "ReadCapacityUnits": 1,
    "WriteCapacityUnits": 1
  },
  "TableName": "USER_FEE_LOCAL",
  "StreamSpecification": {
    "StreamEnabled": false
  }
}

Put Item

This operation allows you to create or replace an item in a table. It enables you to specify the table name, provide the attribute values for the new item, and define the primary key attributes to uniquely identify the item.

Required Parameter

• New Item Details

Example

{
  "TableName": "USER_DETAILS_with_localS",
  "Item": {
    "USER_ID": 1,
    "USER_NAME": "NICK",
    "USER_AGE": 34,
    "USER_FEE": 1234.56
  }
}