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Generate API reference docs for Pipeline
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This is the first part of addressing tektoncd#1250 (and tektoncd/website#117).

Using https://github.com/ahmetb/gen-crd-api-reference-docs/, the tool Knative uses for this, plus my PR at ahmetb/gen-crd-api-reference-docs#43 for an issue with `pkg/apis/pipeline/pod`, this adds generation of `docs/pipeline-api.md` to `hack/update-codegen.sh`.

Signed-off-by: Andrew Bayer <andrew.bayer@gmail.com>
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abayer committed Jan 18, 2022
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8,550 changes: 8,550 additions & 0 deletions docs/pipeline-api.md

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1 change: 1 addition & 0 deletions go.mod
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Expand Up @@ -3,6 +3,7 @@ module github.com/tektoncd/pipeline
go 1.13

require (
github.com/abayer/gen-crd-api-reference-docs v0.999.0 // indirect
github.com/cloudevents/sdk-go/v2 v2.5.0
github.com/containerd/containerd v1.5.2
github.com/docker/cli v20.10.8+incompatible // indirect
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6 changes: 6 additions & 0 deletions go.sum

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42 changes: 42 additions & 0 deletions hack/reference-docs-gen-config.json
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{
"hideMemberFields": [
"TypeMeta"
],
"hideTypePatterns": [
"ParseError$",
"List$"
],
"externalPackages": [
{
"typeMatchPrefix": "^k8s\\.io/apimachinery/pkg/apis/meta/v1\\.Duration$",
"docsURLTemplate": "https://godoc.org/k8s.io/apimachinery/pkg/apis/meta/v1#Duration"
},
{
"typeMatchPrefix": "^k8s\\.io/(api|apimachinery/pkg/apis)/",
"docsURLTemplate": "https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.21/#{{lower .TypeIdentifier}}-{{arrIndex .PackageSegments -1}}-{{arrIndex .PackageSegments -2}}"
},
{
"typeMatchPrefix": "^knative\\.dev/pkg/apis/duck",
"docsURLTemplate": "https://pkg.go.dev/knative.dev/pkg/apis/duck/{{arrIndex .PackageSegments -1}}#{{.TypeIdentifier}}"
},
{
"typeMatchPrefix": "^knative\\.dev/pkg/apis\\.URL$",
"docsURLTemplate": "https://pkg.go.dev/knative.dev/pkg/apis#URL"
},
{
"typeMatchPrefix": "^knative\\.dev/networking/pkg/apis/networking",
"docsURLTemplate": "https://pkg.go.dev/knative.dev/networking/pkg/apis/networking#{{.TypeIdentifier}}"
},
{
"typeMatchPrefix": "^time\\.Duration$",
"docsURLTemplate": "https://golang.org/pkg/time/#Duration"
}
],
"typeDisplayNamePrefixOverrides": {
"k8s.io/api/": "Kubernetes ",
"k8s.io/apimachinery/pkg/apis/": "Kubernetes "
},
"markdownDisabled": false,
"gitCommitDisabled": true
}

48 changes: 48 additions & 0 deletions hack/reference-docs-template/members.tpl
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{{ define "members" }}

{{ range .Members }}
{{ if not (hiddenMember .)}}
<tr>
<td>
<code>{{ fieldName . }}</code><br/>
<em>
{{ if linkForType .Type }}
<a href="{{ linkForType .Type}}">
{{ typeDisplayName .Type }}
</a>
{{ else }}
{{ typeDisplayName .Type }}
{{ end }}
</em>
</td>
<td>
{{ if fieldEmbedded . }}
<p>
(Members of <code>{{ fieldName . }}</code> are embedded into this type.)
</p>
{{ end}}

{{ if isOptionalMember .}}
<em>(Optional)</em>
{{ end }}

{{ safe (renderComments .CommentLines) }}

{{ if and (eq (.Type.Name.Name) "ObjectMeta") }}
Refer to the Kubernetes API documentation for the fields of the
<code>metadata</code> field.
{{ end }}

{{ if or (eq (fieldName .) "spec") }}
<br/>
<br/>
<table>
{{ template "members" .Type }}
</table>
{{ end }}
</td>
</tr>
{{ end }}
{{ end }}

{{ end }}
49 changes: 49 additions & 0 deletions hack/reference-docs-template/pkg.tpl
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{{ define "packages" }}

{{ with .packages}}
<p>Packages:</p>
<ul>
{{ range . }}
<li>
<a href="#{{- packageAnchorID . -}}">{{ packageDisplayName . }}</a>
</li>
{{ end }}
</ul>
{{ end}}

{{ range .packages }}
<h2 id="{{- packageAnchorID . -}}">
{{- packageDisplayName . -}}
</h2>

{{ with (index .GoPackages 0 )}}
{{ with .DocComments }}
<div>
{{ safe (renderComments .) }}
</div>
{{ end }}
{{ end }}

Resource Types:
<ul>
{{- range (visibleTypes (sortedTypes .Types)) -}}
{{ if isExportedType . -}}
<li>
<a href="{{ linkForType . }}">{{ typeDisplayName . }}</a>
</li>
{{- end }}
{{- end -}}
</ul>

{{ range (visibleTypes (sortedTypes .Types))}}
{{ template "type" . }}
{{ end }}
<hr/>
{{ end }}

<p><em>
Generated with <code>gen-crd-api-reference-docs</code>
{{ with .gitCommit }} on git commit <code>{{ . }}</code>{{end}}.
</em></p>

{{ end }}
2 changes: 2 additions & 0 deletions hack/reference-docs-template/placeholder.go
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// Placeholder file to make Go vendor this directory properly.
package template
81 changes: 81 additions & 0 deletions hack/reference-docs-template/type.tpl
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{{ define "type" }}

<h3 id="{{ anchorIDForType . }}">
{{- .Name.Name }}
{{ if eq .Kind "Alias" }}(<code>{{.Underlying}}</code> alias){{ end -}}
</h3>
{{ with (typeReferences .) }}
<p>
(<em>Appears on:</em>
{{- $prev := "" -}}
{{- range . -}}
{{- if $prev -}}, {{ end -}}
{{- $prev = . -}}
<a href="{{ linkForType . }}">{{ typeDisplayName . }}</a>
{{- end -}}
)
</p>
{{ end }}

<div>
{{ safe (renderComments .CommentLines) }}
</div>

{{ with (constantsOfType .) }}
<table>
<thead>
<tr>
<th>Value</th>
<th>Description</th>
</tr>
</thead>
<tbody>
{{- range . -}}
<tr>
{{- /*
renderComments implicitly creates a <p> element, so we
add one to the display name as well to make the contents
of the two cells align evenly.
*/ -}}
<td><p>{{ typeDisplayName . }}</p></td>
<td>{{ safe (renderComments .CommentLines) }}</td>
</tr>
{{- end -}}
</tbody>
</table>
{{ end }}

{{ if .Members }}
<table>
<thead>
<tr>
<th>Field</th>
<th>Description</th>
</tr>
</thead>
<tbody>
{{ if isExportedType . }}
<tr>
<td>
<code>apiVersion</code><br/>
string</td>
<td>
<code>
{{apiGroup .}}
</code>
</td>
</tr>
<tr>
<td>
<code>kind</code><br/>
string
</td>
<td><code>{{.Name.Name}}</code></td>
</tr>
{{ end }}
{{ template "members" .}}
</tbody>
</table>
{{ end }}

{{ end }}
3 changes: 3 additions & 0 deletions hack/update-codegen.sh
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Expand Up @@ -82,3 +82,6 @@ ${REPO_ROOT_DIR}/hack/update-deps.sh

# Make sure the OpenAPI specification and Swagger file are up-to-date
${REPO_ROOT_DIR}/hack/update-openapigen.sh

# Make sure the generated API reference docs are up-to-date
${REPO_ROOT_DIR}/hack/update-reference-docs.sh
26 changes: 26 additions & 0 deletions hack/update-reference-docs.sh
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#!/usr/bin/env bash

# Copyright 2020 The Tekton Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -o errexit
set -o nounset

echo "Generating API reference docs ..."
# TODO(abayer): Switch to github.com/ahmetb/gen-crd-api-reference-docs when https://github.com/ahmetb/gen-crd-api-reference-docs/pull/43 is merged
go run -mod=readonly github.com/abayer/gen-crd-api-reference-docs \
-config "./hack/reference-docs-gen-config.json" \
-api-dir "github.com/tektoncd/pipeline/pkg/apis" \
-template-dir "./hack/reference-docs-template" \
-out-file "./docs/pipeline-api.md"
18 changes: 18 additions & 0 deletions pkg/apis/doc.go
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/*
Copyright 2019 The Tekton Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// Package apis contains API Schema definitions for the various API groups
package apis
5 changes: 3 additions & 2 deletions pkg/apis/pipeline/pod/doc.go
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Expand Up @@ -14,7 +14,8 @@ See the License for the specific language governing permissions and
limitations under the License.
*/

// +k8s:openapi-gen=true

// Package pod contains non-versioned pod configuration
// +k8s:openapi-gen=true
// +gencrdrefdocs:unversionedTypes
// +groupName=tekton.dev
package pod
23 changes: 23 additions & 0 deletions pkg/apis/run/v1alpha1/doc.go
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/*
Copyright 2019 The Tekton Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// Package v1alpha1 contains API Schema definitions for the run v1alpha1 API group
// +k8s:openapi-gen=true
// +k8s:deepcopy-gen=package,register
// +k8s:conversion-gen=github.com/tektoncd/pipeline/pkg/apis/run
// +k8s:defaulter-gen=TypeMeta
// +groupName=tekton.dev
package v1alpha1

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