Add Fabric OneLake events to an eventstream

This article shows you how to add Fabric OneLake event source to an eventstream.

OneLake events allow you to subscribe to changes in files and folders in OneLake, and then react to those changes in real-time. With Fabric event streams, you can capture these OneLake events, transform them, and route them to various destinations in Fabric for further analysis. This seamless integration of OneLake events within Fabric event streams gives you greater flexibility for monitoring and analyzing activities in your OneLake.

Event types

Here are the supported OneLake events:

Prerequisites

• Get access to a workspace in the Fabric capacity license mode (or) the Trial license mode with Contributor or higher permissions.
• SusbcribeOneLakeEvent permission on the data sources.

• Create an eventstream if you don't already have an eventstream.

Add Fabric OneLake events as source

If you haven't added any source to your eventstream yet, select the Connect data sources tile. You can also select Add source > Connect data sources on the ribbon.

If you're adding the source to an already published eventstream, switch to Edit mode. On the ribbon, select Add source > Connect data sources.

On the Select a data source page, search for and select Connect on the OneLake events tile.

Configure and connect to Fabric OneLake events

1. On the Connect page, for Event types, select the event types that you want to monitor.

   

2. This step is optional. To see the schemas for event types, select View selected event type schemas. If you select it, browse through schemas for the events, and then navigate back to previous page by selecting the backward arrow button at the top.

3. Select Add a OneLake source under Select data source for events.

   

4. On the Choose the data you want to connect page:

   1. View all available data sources or only your data sources (My data) or your favorite data sources by using the category buttons at the top. You can use the Filter by keyword text box to search for a specific source. You can also use the Filter button to filter based on the type of the resource (KQL Database, Lakehouse, SQL Database, Warehouse). The following example uses the My data option.

   2. Select the data source from the list.

   3. Select Next at the bottom of the page.

      

5. Select all tables or a specific table that you're interested in, and then select Add.

   

6. Now, on the Configure connection settings page, you can add filters to set the filter conditions by selecting fields to watch and the alert value. To add a filter:

   1. Select + Filter.

   2. Select a field.

   3. Select an operator.

   4. Select one or more values to match.

      

Stream or source details

1. On the Connect page, follow one of these steps based on whether you're using Eventstream or Real-Time hub.

   • Eventstream:

     In the Source details pane to the right, follow these steps:

     1. For Source name, select the Pencil button to change the name.

     2. Notice that Eventstream name and Stream name are read-only.

   • Real-Time hub:

     In the Stream details section to the right, follow these steps:

     1. Select the Fabric workspace where you want to create the eventstream.

     2. For Eventstream name, select the Pencil button, and enter a name for the eventstream.

     3. The Stream name value is automatically generated for you by appending -stream to the name of the eventstream. This stream appears on the real-time hub's All data streams page when the wizard finishes.

2. Select Next at the bottom of the Configure page.

Review and connect

On the Review + connect screen, review the summary, and select Add (Eventstream) or Connect (Real-Time hub).

View updated eventstream

1. Once the connection is created, you can see the Fabric OneLake events source added to your eventstream in Edit mode. Select Publish to publish the eventstream and capture the OneLake events.

   

   Note

   Before proceeding with event transformation or routing, ensure that OneLake events were triggered and successfully sent to the eventstream.

2. If you want to transform the Fabric OneLake events, open your eventstream and select Edit on the toolbar to enter Edit mode. Then you can add operations to transform the Fabric OneLake events or route them to a destination such as Lakehouse.

Known limitations

• Currently, error messages aren't available when an error occurs on discrete events sources.
• Currently, the Data Preview feature isn't available for discrete events sources.

Related content

• Azure Blob Storage events
• Create eventstreams for discrete events