Bronto to Delta Lake

This page provides you with instructions on how to extract data from Bronto and load it into Delta Lake. (If this manual process sounds onerous, check out Stitch, which can do all the heavy lifting for you in just a few clicks.)

What is Bronto?

Oracle Bronto is an ecommerce email marketing platform. It integrates ecommerce and point-of-sale data with operational platforms, enabling brands to maximize the value of customer data and deliver relevant, personal messages.

What is Delta Lake?

Delta Lake is an open source storage layer that sits on top of existing data lake file storage, such AWS S3, Azure Data Lake Storage, or HDFS. It uses versioned Apache Parquet files to store data, and a transaction log to keep track of commits, to provide capabilities like ACID transactions, data versioning, and audit history.

Getting data out of Bronto

You can use Bronto's API to get Bronto data into your data warehouse. The API was originally designed using the SOAP API protocol, but a new REST API lets you access and work with product and order data.

Bronto's API offers numerous endpoints that can provide information on orders, products, and campaigns. Using methods outlined in the API documentation, you can retrieve the data you need. For example, to get a list of all transactions for a given order object, you could GET /orders/{orderId}.

Sample Bronto data

The Bronto REST API returns JSON-formatted data. Here's an example of the kind of response you might see when querying an objects endpoint.

{
    emailAddress:validly formatted email address
    contactId:string
    orderDate:ISO-8601 datetime
    status:PENDING | PROCESSED
    hasTracking:boolean
    trackingCookieName:string
    trackingCookieValue:string
    deliveryId:string
    customerOrderId:string
    discountAmount:number
    grandTotal:number
    lineItems:[
      {
        name:string
        other:string
        sku:string
        category:string
        imageUrl:string
        productUrl:string
        quantity:number
        salePrice:number
        totalPrice:number
        unitPrice:number
        description:string
        position:number
      }
    ]
    originIp:IPv4 or IPv6 address
    messageId:string
    originUserAgent:string
    shippingAmount:number
    shippingDate:ISO-8601 datetime
    shippingDetails:string
    shippingTrackingUrl:string
    subtotal:number
    taxAmount:number
    cartId:UUID
    createdDate:ISO-8601 datetime
    updatedDate:ISO-8601 datetime
    currency:ISO-4217 currency code
    states: {
      processed:boolean
      shipped:boolean
    }
    orderId:UUID
}

Loading data into Delta Lake on Databricks

To create a Delta table, you can use existing Apache Spark SQL code and change the format from parquet, csv, or json to delta. Once you have a Delta table, you can write data into it using Apache Spark's Structured Streaming API. The Delta Lake transaction log guarantees exactly-once processing, even when there are other streams or batch queries running concurrently against the table. By default, streams run in append mode, which adds new records to the table. Databricks provides quickstart documentation that explains the whole process.

Keeping Bronto data up to date

Now what? You've built a script that pulls data from Bronto and loads it into your data warehouse, but what happens tomorrow when you have new transactions?

The key is to build your script in such a way that it can identify incremental updates to your data. Thankfully, Bronto's API results include fields like createdDate that allow you to identify records that are new since your last update (or since the newest record you've copied). Once you've take new data into account, you can set your script up as a cron job or continuous loop to keep pulling down new data as it appears.

Other data warehouse options

Delta Lake on Databricks is great, but sometimes you need to optimize for different things when you're choosing a data warehouse. Some folks choose to go with Amazon Redshift, Google BigQuery, PostgreSQL, or Snowflake, which are RDBMSes that use similar SQL syntax, or Panoply, which works with Redshift instances. Others choose a data lake, like Amazon S3. If you're interested in seeing the relevant steps for loading data into one of these platforms, check out To Redshift, To BigQuery, To Postgres, To Snowflake, To Panoply, and To S3.

Easier and faster alternatives

If all this sounds a bit overwhelming, don’t be alarmed. If you have all the skills necessary to go through this process, chances are building and maintaining a script like this isn’t a very high-leverage use of your time.

Thankfully, products like Stitch were built to move data from Bronto to Delta Lake automatically. With just a few clicks, Stitch starts extracting your Bronto data, structuring it in a way that's optimized for analysis, and inserting that data into your Delta Lake data warehouse.