Automate GH release

Author: sedefsavas

.github/workflows/release.yml

@@ -0,0 +1,35 @@
+on:
+  push:
+    # Sequence of patterns matched against refs/tags
+    tags:
+    - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
+
+name: release
+
+jobs:
+  build:
+    name: create draft release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set env
+        run:  echo "RELEASE_TAG=${GITHUB_REF:10}" >> $GITHUB_ENV
+      - name: checkout code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Install go
+        uses: actions/setup-go@v2
+        with:
+          go-version: '^1.17'
+      - name: generate release artifacts
+        run: |
+          make release
+      - name: generate release notes
+        run: |
+          make release-notes
+      - name: Release
+        uses: softprops/action-gh-release@v1
+        with:
+          draft: true
+          files: out/*
+          body_path: _releasenotes/${{ env.RELEASE_TAG }}.md

Makefile

@@ -81,11 +81,13 @@ BUCKET ?= $(STAGING_BUCKET)
 PROD_REGISTRY := k8s.gcr.io/cluster-api-aws
 REGISTRY ?= $(STAGING_REGISTRY)
 RELEASE_TAG ?= $(shell git describe --abbrev=0 2>/dev/null)
+# the previous release tag, e.g., v0.6.9, excluding pre-release tags
+PREVIOUS_TAG ?= $(shell git tag -l | grep -E "^v[0-9]+\.[0-9]+\.[0-9]+$$" | sort -V | grep -B1 $(RELEASE_TAG) | head -n 1 2>/dev/null)
 PULL_BASE_REF ?= $(RELEASE_TAG) # PULL_BASE_REF will be provided by Prow
 RELEASE_ALIAS_TAG ?= $(PULL_BASE_REF)
 RELEASE_DIR := out
+RELEASE_NOTES_DIR := _releasenotes
 RELEASE_POLICIES := $(RELEASE_DIR)/AWSIAMManagedPolicyControllers.json $(RELEASE_DIR)/AWSIAMManagedPolicyControllersWithEKS.json $(RELEASE_DIR)/AWSIAMManagedPolicyCloudProviderControlPlane.json $(RELEASE_DIR)/AWSIAMManagedPolicyCloudProviderNodes.json
-
 # image name used to build the cmd/clusterawsadm
 TOOLCHAIN_IMAGE := toolchain
 
@@ -388,6 +390,9 @@ staging-manifests:
 $(RELEASE_DIR):
 	mkdir -p $@
 
+$(RELEASE_NOTES_DIR):
+	mkdir -p $@
+
 .PHONY: list-staging-releases
 list-staging-releases: ## List staging images for image promotion
 	@echo $(CORE_IMAGE_NAME):
@@ -438,6 +443,10 @@ release-manifests:
 	# Add metadata to the release artifacts
 	cp metadata.yaml $(RELEASE_DIR)/metadata.yaml
 
+.PHONY: release-notes
+release-notes: $(RELEASE_NOTES_DIR) $(RELEASE_NOTES)
+	go run ./hack/tools/release/notes.go --from=$(PREVIOUS_TAG) > $(RELEASE_NOTES_DIR)/$(RELEASE_TAG).md
+
 .PHONY: release-changelog
 release-changelog: $(RELEASE_NOTES) check-release-tag check-previous-release-tag check-github-token $(RELEASE_DIR) ## Builds the changelog for a release
 	$(RELEASE_NOTES) --debug --org $(GH_ORG_NAME) --repo $(GH_REPO_NAME) --start-sha $(shell git rev-list -n 1 ${PREVIOUS_VERSION}) --end-sha $(shell git rev-list -n 1 ${RELEASE_TAG}) --output $(RELEASE_DIR)/CHANGELOG.md --go-template go-template:$(REPO_ROOT)/hack/changelog.tpl --dependencies=false --branch=main