Core Plugins and tasks Expression

Core Plugins and tasks Expression
Certified
Condition based on variable expression.

Renders a templated expression and treats the result as truthy/falsey to decide whether the condition passes.

Blank strings or the literal false (case-sensitive) evaluate to false; everything else is true. Expressions can reference any flow variables available at evaluation time, so make sure they resolve without errors.

yaml
type: io.kestra.plugin.core.condition.Expression

Examples

Trigger condition to execute the flow when the expression evaluates to true.

yaml
id: myflow
namespace: company.team

tasks:
  - id: hello
    type: io.kestra.plugin.core.log.Log
    message: Average value has gone below 10

triggers:
  - id: expression_trigger
    type: io.kestra.plugin.core.trigger.Schedule
    cron: "*/1 * * * *"
    conditions:
      - type: io.kestra.plugin.core.condition.Expression
        expression: "{{ kv('average_value') < 10 }}"