Simplify uses of resolve-refs partial (#1773)

* Use the resolve-refs partial as soon as possible

Call it right after accessing the site.Data,
since it is recursing it will solve all references in the tree.
That way we don't need to wonder where to call it,
we trust the validators that the refs will be used in the right place.

* Enable strict $ref rule in OpenAPI validator

* Document use of $ref to compose examples

* Fix schema path in event-fields shortcode

Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>

changelogs/internal/newsfragments/1773.clarification

@@ -0,0 +1 @@
+Simplify uses of `resolve-refs` partial.

layouts/partials/openapi/render-api.html

@@ -5,15 +5,11 @@
   * `api_data`: the OpenAPI data
   * `base_url`: the base URL: that is, the part we glue onto the front
   of each value in `paths` to get a complete URL.
-  * `path`: the directory under /data where we found this API definition.
-  We use this to resolve "$ref" values, since they are relative to the schema's
-  location.
 
 */}}
 
 {{ $api_data := index .api_data }}
 {{ $base_url := .base_url }}
-{{ $path := .path }}
 
 {{ range $path_name, $path_data := $api_data.paths }}
 
@@ -21,7 +17,7 @@
 
     {{/* note that a `paths` entry can be a $ref */}}
 
-    {{ $params := dict "endpoint" $endpoint "path" $path }}
+    {{ $params := dict "endpoint" $endpoint }}
 
     {{ with $path_data.get }}
 

layouts/partials/openapi/render-operation.html

@@ -5,7 +5,6 @@
   * `method`: the method, e.g. GET, PUT
   * `endpoint`: the endpoint
   * `operation_data`: the OpenAPI data for the operation
-  * `path`: the path where this definition was found, to enable us to resolve "$ref"
 
   This template renders the operation as a `<section>` containing:
 
@@ -21,7 +20,6 @@
 {{ $method := .method }}
 {{ $endpoint := .endpoint }}
 {{ $operation_data := .operation_data }}
-{{ $path := .path }}
 {{ $anchor := anchorize $endpoint }}
 
 <section class="rendered-data http-api {{ $method }}">
@@ -80,9 +78,9 @@
 </table>
 
 <hr/>
-{{ partial "openapi/render-request"   (dict "parameters" $operation_data.parameters "request_body" $operation_data.requestBody "path" $path "anchor_base" $anchor ) }}
+{{ partial "openapi/render-request"   (dict "parameters" $operation_data.parameters "request_body" $operation_data.requestBody "anchor_base" $anchor ) }}
 <hr/>
-{{ partial "openapi/render-responses" (dict "responses"  $operation_data.responses  "path" $path "anchor_base" $anchor ) }}
+{{ partial "openapi/render-responses" (dict "responses" $operation_data.responses "anchor_base" $anchor ) }}
 
 </details>
 

layouts/partials/openapi/render-parameters.html

@@ -5,7 +5,6 @@
   * `parameters`: OpenAPI data specifying the parameters
   * `type`: the type of parameters to render: "header, ""path", "query"
   * `caption`: caption to use for the table
-  * `path`: the path where this definition was found, to enable us to resolve "$ref"
 
   This template renders a single table containing parameters of the given type.
 
@@ -14,9 +13,7 @@
 {{ $parameters := .parameters }}
 {{ $type := .type }}
 {{ $caption := .caption }}
-{{ $path := .path }}
 
-{{ $parameters = partial "json-schema/resolve-refs" (dict "schema" $parameters "path" $path) }}
 {{ $parameters_of_type := where $parameters "in" $type }}
 
 {{ with $parameters_of_type }}

layouts/partials/openapi/render-request.html

@@ -4,7 +4,6 @@
 
   * `parameters`: OpenAPI data specifying the parameters
   * `request_body`: OpenAPI data specifying the request body
-  * `path`: the path where this definition was found, to enable us to resolve "$ref"
   * `anchor_base`: a prefix to add to the HTML anchors generated for each object
 
   This template renders:
@@ -16,7 +15,6 @@
 
 {{ $parameters := .parameters }}
 {{ $request_body := .request_body }}
-{{ $path := .path }}
 {{ $anchor_base := .anchor_base }}
 
 <h2>Request</h2>
@@ -26,9 +24,9 @@
     {{ if $parameters }}
 <h3>Request parameters</h3>
 
-        {{ partial "openapi/render-parameters" (dict "parameters" $parameters "type" "header" "caption" "header parameters" "path" .path) }}
-        {{ partial "openapi/render-parameters" (dict "parameters" $parameters "type" "path" "caption" "path parameters" "path" .path) }}
-        {{ partial "openapi/render-parameters" (dict "parameters" $parameters "type" "query" "caption" "query parameters" "path" .path) }}
+        {{ partial "openapi/render-parameters" (dict "parameters" $parameters "type" "header" "caption" "header parameters") }}
+        {{ partial "openapi/render-parameters" (dict "parameters" $parameters "type" "path" "caption" "path parameters") }}
+        {{ partial "openapi/render-parameters" (dict "parameters" $parameters "type" "query" "caption" "query parameters") }}
 
     {{ end }}
 
@@ -42,8 +40,7 @@
             {{/*
                 Display the JSON schemas
             */}}
-            {{ $schema := partial "json-schema/resolve-refs" (dict "schema" $json_body.schema "path" $path) }}
-            {{ $schema := partial "json-schema/resolve-allof" $schema }}
+            {{ $schema := partial "json-schema/resolve-allof" $json_body.schema }}
 
             {{ $additional_types := partial "json-schema/resolve-additional-types" (dict "schema" $schema "anchor_base" $anchor_base) }}
             {{ range $additional_types }}
@@ -70,8 +67,7 @@
             {{ $example := dict }}
 
             {{ if $body.schema }}
-                {{ $schema := partial "json-schema/resolve-refs" (dict "schema" $body.schema "path" $path) }}
-                {{ $schema := partial "json-schema/resolve-allof" $schema }}
+                {{ $schema := partial "json-schema/resolve-allof" $body.schema }}
 
                 {{ $example = partial "json-schema/resolve-example" $schema }}
             {{ end }}

layouts/partials/openapi/render-responses.html

@@ -3,7 +3,6 @@
   Render the response part of a single HTTP API operation, given:
 
   * `responses`: OpenAPI data specifying the responses
-  * `path`: the path where this definition was found, to enable us to resolve "$ref"
   * `anchor_base`: a prefix to add to the HTML anchors generated for each object
 
   This template renders:
@@ -15,7 +14,6 @@
 */}}
 
 {{ $responses := .responses }}
-{{ $path := .path }}
 {{ $anchor_base := .anchor_base }}
 
 <h2>Responses</h2>
@@ -26,8 +24,6 @@
   <th class="col-status-description">Description</th>
  </thead>
 
-{{ $responses = partial "json-schema/resolve-refs" (dict "schema" $responses "path" $path) }}
-
 {{ range $code, $response := $responses }}
 
  <tr>
@@ -92,8 +88,7 @@
             {{ if or (eq $schema.type "object") (eq $schema.type "array") }}
                 {{ $example := partial "json-schema/resolve-example" $schema }}
                 {{ if $json_body.examples }}
-                    {{ $example = partial "json-schema/resolve-refs" (dict "schema" $json_body.examples "path" $path) }}
-                    {{ $example = $example.response.value }}
+                    {{ $example = $json_body.examples.response.value }}
                 {{ end }}
 
                 {{ $example_json := jsonify (dict "indent" "  ") $example }}

layouts/shortcodes/event-fields.html

@@ -13,7 +13,7 @@
 */}}
 
 {{ $event := index .Site.Data "event-schemas" "schema" "core-event-schema" .Params.event_type }}
-{{ $path := "event-schemas/schema/core-event-schema" }}
+{{ $path := delimit (slice "event-schemas/schema/core-event-schema" .Params.event_type) "/" }}
 
 {{ $event = partial "json-schema/resolve-refs" (dict "schema" $event "path" $path) }}
 {{ $event := partial "json-schema/resolve-allof" $event }}

layouts/shortcodes/http-api.html

@@ -23,4 +23,6 @@
 {{ $base_url := (index $api_data.servers 0).variables.basePath.default }}
 {{ $path := delimit (slice "api" $spec $api) "/" }}
 
-{{ partial "openapi/render-api" (dict "api_data" $api_data "base_url" $base_url "path" $path) }}
+{{ $api_data = partial "json-schema/resolve-refs" (dict "schema" $api_data "path" $path) }}
+
+{{ partial "openapi/render-api" (dict "api_data" $api_data "base_url" $base_url) }}

openapi_extensions.md

@@ -26,3 +26,8 @@ property, etc).
 
 A variation of the above: indicates changes to the associated parameter in
 particular Matrix specification versions.
+
+## Use of `$ref` inside examples
+
+Although the OpenAPI/JSON Schema specs only allow to use `$ref` to reference a
+whole example, we use it to compose examples from other examples.

redocly.yaml

@@ -1,10 +1,11 @@
 # See https://redocly.com/docs/cli/configuration/ for more information.
 extends:
-  - minimal
+  - recommended-strict
 rules:
   info-license: off
   security-defined: off
   operation-4xx-response: off
   no-invalid-media-type-examples: off
   no-path-trailing-slash: off
-  operation-2xx-response: off
+  operation-2xx-response: off
+  spec-strict-refs: error