CLOUDP-271997: IPA 108 - delete method schema

tools/spectral/ipa/__tests__/deleteMethodResponseShouldNotHaveSchema.test.js

@@ -0,0 +1,98 @@
+import testRule from './__helpers__/testRule';
+import { DiagnosticSeverity } from '@stoplight/types';
+
+testRule('xgen-IPA-108-delete-response-should-be-empty', [
+  {
+    name: 'valid DELETE with void 204',
+    document: {
+      paths: {
+        '/resource/{id}': {
+          delete: {
+            responses: {
+              204: {},
+            },
+          },
+        },
+      },
+    },
+    errors: [],
+  },
+  {
+    name: 'valid DELETE with void 204 versioned',
+    document: {
+      paths: {
+        '/resource/{id}': {
+          delete: {
+            responses: {
+              204: {
+                description: 'No Content',
+                content: {
+                  'application/vnd.atlas.2023-01-01+json': {
+                    'x-xgen-version': '2023-01-01',
+                  },
+                  'application/vnd.atlas.2023-03-01+json': {
+                    'x-xgen-version': '2023-01-01',
+                  },
+                },
+              },
+            },
+          },
+        },
+      },
+    },
+    errors: [],
+  },
+  {
+    name: 'invalid DELETE with non-void 204',
+    document: {
+      paths: {
+        '/resource/{id}': {
+          delete: {
+            responses: {
+              204: {
+                content: {
+                  'application/vnd.atlas.2023-01-01+json': {
+                    schema: { type: 'object' },
+                  },
+                },
+              },
+            },
+          },
+        },
+      },
+    },
+    errors: [
+      {
+        code: 'xgen-IPA-108-delete-response-should-be-empty',
+        message:
+          'Error found for application/vnd.atlas.2023-01-01+json: DELETE method should return an empty response. The response should not have a schema property. http://go/ipa/108',
+        path: ['paths', '/resource/{id}', 'delete'],
+        severity: DiagnosticSeverity.Warning,
+      },
+    ],
+  },
+  {
+    name: 'valid with exception',
+    document: {
+      paths: {
+        '/resource/{id}': {
+          delete: {
+            'x-xgen-IPA-exception': {
+              'xgen-IPA-108-delete-response-should-be-empty': 'Legacy API',
+            },
+            responses: {
+              204: {
+                content: {
+                  'application/vnd.atlas.2023-01-01+json': {
+                    schema: { type: 'object' },
+                  },
+                },
+              },
+            },
+          },
+        },
+      },
+    },
+    errors: [],
+  },
+]);

tools/spectral/ipa/ipa-spectral.yaml

@@ -6,6 +6,7 @@ extends:
   - ./rulesets/IPA-113.yaml
   - ./rulesets/IPA-123.yaml
   - ./rulesets/IPA-106.yaml
+  - ./rulesets/IPA-108.yaml
 
 overrides:
   - files:

tools/spectral/ipa/rulesets/IPA-108.yaml

@@ -0,0 +1,14 @@
+# IPA-108: Delete
+# http://go/ipa/108
+
+rules:
+  xgen-IPA-108-delete-response-should-be-empty:
+    description: Delete method response should not have schema reference to object. http://go/ipa/108
+    message: '{{error}} http://go/ipa/108'
+    severity: warn
+    given: $.paths[*].delete
+    then:
+      function: deleteMethodResponseShouldNotHaveSchema
+
+functions:
+  - deleteMethodResponseShouldNotHaveSchema

tools/spectral/ipa/rulesets/README.md

@@ -42,6 +42,14 @@ For rule definitions, see [IPA-106.yaml](https://github.com/mongodb/openapi/blob
 | ------------------------------------------------------------------ | -------------------------------------------------------------------------------- | -------- |
 | xgen-IPA-106-create-method-request-body-is-request-suffixed-object | The Create method request should be a Request suffixed object. http://go/ipa/106 | warn     |
 
+### IPA-108
+
+For rule definitions, see [IPA-108.yaml](https://github.com/mongodb/openapi/blob/main/tools/spectral/ipa/rulesets/IPA-108.yaml).
+
+| Rule Name                                    | Description                                                                          | Severity |
+| -------------------------------------------- | ------------------------------------------------------------------------------------ | -------- |
+| xgen-IPA-108-delete-response-should-be-empty | Delete method response should not have schema reference to object. http://go/ipa/108 | warn     |
+
 ### IPA-109
 
 For rule definitions, see [IPA-109.yaml](https://github.com/mongodb/openapi/blob/main/tools/spectral/ipa/rulesets/IPA-109.yaml).

tools/spectral/ipa/rulesets/functions/deleteMethodResponseShouldNotHaveSchema.js

@@ -0,0 +1,61 @@
+import { hasException } from './utils/exceptions.js';
+import { collectAdoption, collectAndReturnViolation, collectException } from './utils/collectionUtils.js';
+
+const RULE_NAME = 'xgen-IPA-108-delete-response-should-be-empty';
+const ERROR_MESSAGE = 'DELETE method should return an empty response. The response should not have a schema property.';
+
+/**
+ * Delete method should return an empty response
+ * @param {object} input - The delete operation object
+ * @param {object} _ - Unused
+ * @param {object} context - The context object containing the path
+ */
+export default (input, _, { path }) => {
+  // 1. Filter out not relevant use cases that should not lead to adoption.
+  const deleteOp = input;
+  if (!deleteOp.responses || deleteOp.responses.length === 0) {
+    return;
+  }
+
+  // 2. Handle exception on OpenAPI schema
+  if (hasException(deleteOp, RULE_NAME)) {
+    collectException(deleteOp, RULE_NAME, path);
+    return;
+  }
+
+  // 3. Validation
+  const errors = checkViolations(deleteOp.responses);
+  if (errors) {
+    return collectAndReturnViolation(path, RULE_NAME, errors);
+  }
+
+  collectAdoption(path, RULE_NAME);
+};
+
+/**
+ * Check if the operation has validation issues
+ * @param {object} input - The  object to vefify
+ * @return {Array<string>|undefined} - The content types that have a schema
+ */
+function checkViolations(input) {
+  try {
+    if (input && input['204']) {
+      const successResponse = input['204'];
+      if (successResponse.content) {
+        const errors = [];
+        for (const contentType of Object.keys(successResponse.content)) {
+          if (successResponse.content[contentType] && successResponse.content[contentType].schema) {
+            errors.push({
+              message: `Error found for ${contentType}: ${ERROR_MESSAGE}`,
+            });
+          }
+        }
+        return errors.length > 0 ? errors : undefined;
+      }
+    }
+  } catch (e) {
+    return ['Internal Rule Error without reporting violation' + e];
+  }
+  // No errors returning undefined
+  return undefined;
+}