ci: add artifacts target and upload-artifacts job for CRDs

Signed-off-by: Cong Liu <conliu@google.com>

Author: liu-cong

.github/workflows/ci-release.yaml

@@ -51,3 +51,38 @@ jobs:
       tag: ${{ needs.set-params.outputs.tag }}
       prerelease: ${{ fromJSON(needs.set-params.outputs.prerelease) }}
       chart-suffix: ""
+
+  upload-artifacts:
+    needs: set-params
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout source
+        uses: actions/checkout@v6
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Build Artifacts
+        run: |
+          make artifacts
+
+      - name: Upload Release Assets
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        run: |
+          files=$(find artifacts -type f -size +0c | tr '\n' ' ')
+          if [ -z "$files" ]; then
+            echo "No artifacts to upload."
+            exit 0
+          fi
+          if gh release view "${{ needs.set-params.outputs.tag }}" >/dev/null 2>&1; then
+            gh release upload "${{ needs.set-params.outputs.tag }}" $files --clobber
+          else
+            echo "Release ${{ needs.set-params.outputs.tag }} does not exist. Creating a draft release..."
+            gh release create "${{ needs.set-params.outputs.tag }}" $files --draft --title "${{ needs.set-params.outputs.tag }}" --notes "Release ${{ needs.set-params.outputs.tag }}"
+          fi
+

Makefile

@@ -360,6 +360,17 @@ helm-push-standalone: ## Package and push the llm-d-router-standalone Helm chart
 	$(MAKE) helm-push CHART=llm-d-router-standalone
 
 
+##@ Release
+
+.PHONY: artifacts
+artifacts: yq ## Generate release artifacts (CRD manifests)
+	if [ -d artifacts ]; then rm -rf artifacts; fi
+	mkdir -p artifacts
+	kubectl kustomize config/crd/bases -o artifacts/manifests.yaml
+	$(YQ) -P 'select(.spec.versions[].name == "v1")' artifacts/manifests.yaml > artifacts/v1-manifests.yaml
+	$(YQ) -P 'select(.spec.versions[].name != "v1")' artifacts/manifests.yaml > artifacts/experimental-manifests.yaml
+
+
 ##@ Coverage
 
 COVERAGE_DIR       ?= coverage

config/crd/bases/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+- llm-d.ai_inferenceobjectives.yaml
+- llm-d.ai_inferencemodelrewrites.yaml

config/crd/kustomization.yaml

@@ -3,5 +3,4 @@ kind: Kustomization
 
 resources:
 - ../../deploy/components/crds-gie
-- bases/llm-d.ai_inferenceobjectives.yaml
-- bases/llm-d.ai_inferencemodelrewrites.yaml
+- bases