Backup tag-selected workflows to Gitlab

Fetches workflow definitions from within n8n, selecting only the ones that have one or more (configurable) assigned tags and then:

1. Derives a suitable backup filename by reducing the workflow name to a string with alphanumeric characters and no-spaces
   • Note: This isn't bulletproof, but works as long as workflow names aren't too crazy.
2. Determines which workflows need to be backed up based on whether each one:
   • has been modified. (Note: Even repositioning a node counts.) ...or...
   • is new. (Note: Renaming counts as this.)
3. Commits JSON copies of each workflow, as necessary, to a Gitlab repository with a generated, date-stamped commit message.

Setup

Credentials

• Create a Gitlab Credentials item and assign it to all Gitlab nodes.
• Create an n8n Credentials item and assign it to the n8n node
  • Note: This was tested with http://localhost:5678/api/v1 but should work with any reachable n8n instance and API key.

Modify these values in the "Globals" Node

• gitlab_owner - {{your gitlab account}}
• gitlab_project - {{ your gitlab project name }}
• gitlab_workflow_path - {{ subdirectory in the project where backup files should be saved/committed }}
• tags_to_match_for_backup - {{tag(s) to match for backup selection}}
  • ALERT: According to the n8n node's Filters -> tags field annotations, and API documentation, this supports a CSV list of multiple tags (e.g. tag1,tag2), but the API behavior requires workflows to have all-of the listed tags, not any-of them.
    • See: https://github.com/n8n-io/n8n/issues/10348
    • TL/DR - Don't expect a multiple tag list to be more inclusive.
    • Possible workaround: To match more than one tag value, duplicate the n8n node into multiple single-tag matches, or split and iterate multiple values, and merge the results.

Possible Enhancements

• Make the branch ("Reference") for all the gitlab nodes configurable. Fixed on all as "main" in the template.
• Add an n8n node to generate an audit and store the output in gitlab along with the backups.
• Extend the workflow at the end to create a Gitlab release/tag whenever any backup files are actually updated or created.