Fix the generated DABs JSON schema

.github/workflows/push.yml

@@ -89,3 +89,30 @@ jobs:
         run: |
           # Exit with status code 1 if there are differences (i.e. unformatted files)
           git diff --exit-code
+
+  validate-bundle-schema:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.21.x
+
+      # Github repo: https://github.com/ajv-validator/ajv-cli
+      - name: Install ajv-cli
+        run: npm install -g [email protected]
+
+      # Assert that the generated bundle schema is a valid JSON schema by using
+      # ajv-cli to validate it against a sample configuration file.
+      # By default the ajv-cli runs in strict mode which will fail if the schema
+      # itself is not valid. Strict mode is more strict than the JSON schema
+      # specification. See for details: https://ajv.js.org/options.html#strict-mode-options
+      - name: Validate bundle schema
+        run: |
+          echo -e "bundle:\n  name: abcd" > config.yaml
+          go run main.go bundle schema > schema.json
+          ajv -s schema.json -d config.yaml

bundle/schema/schema.go

@@ -95,7 +95,9 @@ func safeToSchema(golangType reflect.Type, docs *Docs, traceId string, tracker *
 	// HACK to unblock CLI release (13th Feb 2024). This is temporary until proper
 	// support for recursive types is added to the schema generator. PR: https://github.com/databricks/cli/pull/1204
 	if traceId == "for_each_task" {
-		return nil, nil
+		return &jsonschema.Schema{
+			Type: jsonschema.ObjectType,
+		}, nil
 	}
 
 	// WE ERROR OUT IF THERE ARE CYCLES IN THE JSON SCHEMA