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Serves as a mechanism within workflows to handle errors gracefully, potentially retrying failed tasks before proceeding with alternate ones.

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Properties

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try
map[string, task]
required
The task(s) to perform.
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catch
catch
required
Configures the errors to catch and how to handle them.

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Catch Configuration

Defines the configuration of a catch clause, which is a concept used to catch errors.
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errors
errorFilter
The definition of the errors to catch.
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as
string
default:"error"
The name of the runtime expression variable to save the error as.
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when
string
A runtime expression used to determine whether or not to catch the filtered error.
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exceptWhen
string
A runtime expression used to determine whether or not to catch the filtered error.
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retry
string | retryPolicy
The retry policy to use, if any, when catching errors. If a string, must be the name of a retry policy defined in the workflow’s reusable components.
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do
map[string, task]
The definition of the task(s) to run when catching an error.

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Example

document:
  dsl: '1.0.3'
  namespace: test
  name: try-example
  version: '0.1.0'
do:
  - trySomething:
      try:
        - invalidHttpCall:
            call: http
            with:
              method: get
              endpoint: https://
      catch:
        errors:
          with:
            type: https://serverlessworkflow.io.io/dsl/errors/types/communication
            status: 503
        as: error
        retry:
          delay:
            seconds: 3
          backoff:
            exponential: {}
          limit:
            attempt:
              count: 5

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