Filter Component

Description

A component to filter the incoming data based on an arbitrary JSONata expression.

How it works

Filter will pass through the incoming data if it matches the JSONata condition specified in the configuration. The expression can be any valid JSONata expression, so you can be creative. Here are some examples that are possible:

• true
• false
• $not(false)
• $not(true)
• 20 > 5
• body.foo - will be true if body.foo is defined and not false

Requirements

Environment variables

By default no environment variable is necessary to operate the component.

Triggers

This component has no trigger functions, so it is not selectable as a trigger (first step in an integration flow).

Actions

Simple JSONata Filter

This action has two parameters and a checkbox:

Parameters:

• Filter condition - A JSONata expression passed in through the cfg. The expression will be evaluated to a value of true or false. If it is evaluated to false, a message will be logged to the console and the msg will not be sent forward to the next component. If evaluated true, a message will be passed forward along with all data that passed the condition.

Checkbox:

• If checked, the checkbox adds Assertion functionality. Instead of doing nothing, the component will throw an error when the condition is not met.

• Metadata To Response Adding passthrough from a previous step to message body as elasticioMeta variable, if enabled.

Additional Notes

• The JSONata Filter expression can be a valid expression however it can cause an error to be thrown if it is invalid based on the context. For example, $number(hello) > 5 where hello: "world". This JSONata expression is valid but an error will be thrown as hello is NaN.

License

Apache-2.0 © elastic.io GmbH