Data enrichment

Eventvisor has concepts like lookups and transforms that can help you enrich your data on on the fly, without needing to deploy your applications again.

Transforms#

Data transformation is a powerful concept in Eventvisor, which allows you to transform your payloads at application level before sending them to your destinations.

Examples of such transformations may include:

• Adding an extra property
• Removing sensitive properties
• Renaming some property
• ...and more

You can learn about them in more depth in transforms page.

Transforming at event level#

Transformations can be applied at individual event level:

# ...
transforms:
  - type: set
    target: someNewProperty
    value: value here

We just added a new property to the tracked event's payload.

You can also have destination specific transformation for an event:

# ...
destinations:
  browser:
    transforms:
      - type: set
        target: someNewProperty
        value: value here

We just added a new property to the tracked event's payload that's affecting only the browser destination.

Transforming at destination level#

Transformations can also be applied at destination level:

# ...
transforms:
  - type: set
    target: someNewProperty
    value: value here

Lookups#

Lookups can be used to read information on demand via installed modules in your application.

If we take module-localstorage as an example, we can use it to read a value from the browser's localStorage in our transforms:

transforms:
  - lookup: localstorage.someKeyHere
    type: set
    target: someNewProperty

We just manipulated the tracked event's payload affecting browser destination alone, by adding a new property with a value being read from the localStorage.

This can be expanded further with more different kinds of lookups in your applications, by building custom modules.