Resolving Type Errors in CircleCI Matrix Jobs with Orbs

Overview

When using CircleCI, you might encounter type errors while attempting to use matrix jobs with orbs. This issue arises because the syntax of matrix jobs differs when used with orbs, leading to type mismatches when passing sequences to parameters expecting single values.

Prerequisites

  • Familiarity with CircleCI configuration files.
  • Understanding of CircleCI orbs and matrix jobs.

Solution

To resolve the type error when using matrix jobs with orbs, you need to define separate jobs for each resource class instead of using a matrix. Here's how you can configure your CircleCI setup:

  1. Define Separate Jobs for Each Resource Class: Instead of using a matrix to pass multiple resource classes, define individual jobs for each resource class in your workflow. Here's an example configuration:

yaml version: 2.1 orbs: python-orb: circleci/python-orb@x.y.z workflows: build_and_test: jobs: - python-orb/build: executor_resource_class: "large" - python-orb/build: executor_resource_class: "arm.large"

In this setup, the build_and_test workflow runs the build job from the python-orb twice, once with the large resource class and once with the arm.large resource class.

 

Alternatively, you may pass matrix parameters to an orb by updating the syntax used. You can refer to examples of orbs that support matrix jobs, such as the CircleCI Node Orb, to understand how to implement matrix testing effectively.

Additional Resources

By following these steps, you can effectively manage resource classes in your CircleCI workflows without encountering type errors.

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