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Add TEP - 0047-pipeline-task-display-name
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182 changes: 182 additions & 0 deletions teps/0047-pipeline-task-display-name.md
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---
status: proposed
title: Pipeline Task Display Name
creation-date: '2021-01-28'
last-updated: '2021-02-10'
authors:
- '@itewk'
---

# TEP-0047: Pipeline Task Display Name
---


<!-- toc -->
- [Summary](#summary)
- [Motivation](#motivation)
- [Goals](#goals)
- [Non-Goals](#non-goals)
- [Use Cases (optional)](#use-cases-optional)
- [Requirements](#requirements)
- [Proposal](#proposal)
- [Notes/Caveats (optional)](#notescaveats-optional)
- [Risks and Mitigations](#risks-and-mitigations)
- [User Experience (optional)](#user-experience-optional)
- [Performance (optional)](#performance-optional)
- [Design Details](#design-details)
- [Test Plan](#test-plan)
- [Design Evaluation](#design-evaluation)
- [Drawbacks](#drawbacks)
- [Alternatives](#alternatives)
- [Infrastructure Needed (optional)](#infrastructure-needed-optional)
- [Upgrade &amp; Migration Strategy (optional)](#upgrade--migration-strategy-optional)
- [References (optional)](#references-optional)
<!-- /toc -->

## Summary

A task in a Pipeline is currently represented in the UI (as observed in OpenShift 4.6)
using a field (`name`) that is meant to be machine readable, not human readable.
There should be the addition of a way to describe Pipeline tasks that are human readable
so that any tool that renders Tekton Pipeline can do so using a "human readable" field.

## Motivation

The end user of a Tekton pipeline can vary including but not limited to
application developer, to security professional, to compliance officer,
service reliability engineer, product manager, and beyond. The farther
you move away from the application developer the more important human
understanding of the CI/CD process is important.

Currently if a product manager or auditor was to look at a Tekton Pipeline run rendered in UI
that would be presented with a bunch of truncated machine readable task names, no spaces,
no special characters, no capitalization because the only option for tools to render these tasks
is the machine readable `Pipeline.spec.tasks.*.name` field.

Compare this to other tools in this space, Jenkins, GitLab CI, GitHub Actions, etc.
Their renderings of their workflows are meant to be human consumable. Their task names have
the option to be rendered in a human consumable format with use of any characters and fully
rendered for context.

### Goals

* Add a way to specify an optional display name for `Pipeline.spec.tasks.*.` items that allows
any text and if provided will be useable by UIs rendering Tekton Piplines rather then the
machine readable `Pipeline.spec.tasks.*.name` field.
* Add a way to specify a long form description for `Pipeline.spec.tasks.*.` items that allows for a
long form description of a task in the context of a `Pipeline` to provide additional
human context to the intent of a task in a Pipeline.
* Add a way to specify an optional display name for `Pipeline` objects that allows any text
and if provided will be useable for UIs rendering Tekton `Pipeline` rather then the
machine readable `Pipeline.name` field.
### Non-Goals

To be determined.

### Use Cases (optional)

* Pipeline writers can optionally specify a display name for any/all tasks in a `Pipeline`.
* Pipeline writers can optionally specify a description for any/all tasks in a `Pipeline`.
* Pipeline writers can optionally specific a display name for a `Pipeline`.
* Pipeline writers can optionally specify a description for a `Pipeline`.
## Requirements

* New display name filed would be optional and accept any unicode character.
* New description field would be optional and accept any unicode character.

## Proposal

See goals and alternatives.
### Notes/Caveats (optional)

None.
### Risks and Mitigations

1. there are limits on the lengths of strings Kubernetes will store which may need some handling
of some sort

2. Tools that render Tekton pipelines will need to be updated to take advantage of the new
fields once they are available.
### User Experience (optional)

None.

### Performance (optional)

Non predicted.

## Design Details

Suggested new parameters would be:
* `Pipeline.spec.tasks.*.displayName`
* `Pipeline.spec.tasks.*.description`
* `Pipeline.displayName`
* `Pipeline.description`

## Test Plan

To be determined.

## Design Evaluation
None.

## Drawbacks
None.

## Alternatives

### Possible solution 1
Add new fields to spec.
```
kind: Pipeline
metadata:
name: our-awesome-pipeline
spec:
displayName: Our Awesome Pipeline
description: |
This is our awesome pipeline that does amazing things.
tasks:
- name: setup-pgp-keys
displayName: SETUP: PGP Keys
description: |
Sets up the PGP keys required to decrypt encrypted configuration.
taskRef:
kind: ClusterTask
name: import-pgp-keys
```

### Possible solution 2
Add `Pipeline.spec.tasks.*.metadata` and add displayName and description annotations to
`Pipeline.metadata` and `Pipeline.spec.tasks.*.metadata`.
```
kind: Pipeline
metadata:
annotations:
tekton.dev/displayName: "Clone, Build and Deploy App"
tekton.dev/description: "CI/CD workflow for ACME apps with high trust"
spec:
tasks:
- name: clone-app
metadata:
annotations:
tekton.dev/displayName: "Clone App"
tekton.dev/description: "Fetch the App source code that will be tested and built"
taskRef:
name: git-clone
# ... etc ...
- name: clone-config
metadata:
annotations:
tekton.dev/displayName: "Clone Config"
tekton.dev/description: "Fetch the deployment config for staging"
# ... etc ...
```

## Infrastructure Needed (optional)
None.

## Upgrade & Migration Strategy (optional)
None.

## References (optional)
https://github.com/tektoncd/pipeline/issues/3466#issuecomment-767786717
1 change: 1 addition & 0 deletions teps/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -170,6 +170,7 @@ This is the complete list of Tekton teps:
|[TEP-0039](0039-add-variable-retries-and-retrycount.md) | Add Variable `retries` and `retry-count` | proposed | 2021-01-31 |
|[TEP-0040](0040-ignore-step-errors.md) | Ignore Step Errors | proposed | 2021-02-04 |
|[TEP-0045](0045-whenexpressions-in-finally-tasks.md) | WhenExpressions in Finally Tasks | implementable | 2021-01-28 |
|[TEP-0047](0047-pipeline-task-display-name.md) | Pipeline Task Display Name | proposed | 2021-02-10 |
|[TEP-0050](0050-ignore-task-failures.md) | Ignore Task Failures | proposed | 2021-02-19 |
|[TEP-0051](0051-ppc64le-architecture-support.md) | ppc64le Support | proposed | 2021-01-28 |
|[TEP-0052](0052-tekton-results-automated-run-resource-cleanup.md) | Tekton Results: Automated Run Resource Cleanup | proposed | 2021-02-11 |
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