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runner/docs/adrs/0274-step-outcome-and-conclusion.md
2020-03-16 14:56:07 -04:00

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# ADR 0274: Step outcome and conclusion
**Date**: 2020-01-13
**Status**: Accepted
## Context
This ADR proposes adding `steps.<id>.outcome` and `steps.<id>.conclusion` to the steps context.
This allows downstream a step to run based on whether a previous step succeeded or failed.
Reminder, currently the steps contains `steps.<id>.outputs`.
## Decision
For steps that have completed, populate `steps.<id>.outcome` and `steps.<id>.conclusion` with one of the following values:
- `success`
- `failure`
- `cancelled`
- `skipped`
When a continue-on-error step fails, the outcome will be `failure` even though the final conclusion is `success`.
### Example
```yaml
steps:
- id: experimental
continue-on-error: true
run: ./build.sh experimental
- if: ${{ steps.experimental.outcome == 'success' }}
run: ./publish.sh experimental
```
### Terminology
The runs API uses the term `conclusion`.
Therefore we use a different term `outcome` for the value prior to continue-on-error.
The following is a snippet from the runs API response payload:
```json
"steps": [
{
"name": "Set up job",
"status": "completed",
"conclusion": "success",
"number": 1,
"started_at": "2020-01-09T11:06:16.000-05:00",
"completed_at": "2020-01-09T11:06:18.000-05:00"
},
```
## Consequences
- Update runner
- Update [docs](https://help.github.com/en/actions/automating-your-workflow-with-github-actions/contexts-and-expression-syntax-for-github-actions#steps-context)