Automated releases (#11)

* Dummy change

* Disable image building on pr job

* Remove dummy change

* Add release files

* Add execute permissions

* Clear blocking pipeline

.github/package.json

@@ -0,0 +1,34 @@
+{
+    "name": "changelog-generator",
+    "version": "0.2.0",
+    "description": "Changelog Generator",
+    "license": "Apache-2.0",
+    "repository": {
+      "type": "git",
+      "url": "https://github.com/kyma-project/api-gateway"
+    },
+    "changelog": {
+      "repo": "kyma-project/api-gateway",
+      "labels": {
+        "area/application-connector": "Application Connector",
+        "area/serverless": "Serverless",
+        "area/service-catalog": "Service Catalog",
+        "area/cluster": "Cluster",
+        "area/eventing": "Eventing",
+        "area/security": "Security",
+        "area/service-mesh": "Service Mesh",
+        "area/installation": "Installation",
+        "area/monitoring": "Monitoring",
+        "area/logging": "Logging",
+        "area/tracing": "Tracing",
+        "area/console": "Console",
+        "area/luigi": "Luigi",
+        "area/documentation": "Documentation",
+        "area/community": "Community",
+        "area/ci": "CI",
+        "area/core-and-supporting": "Core and Supporting",
+        "area/cli": "CLI"
+      },
+      "cacheDir": ".changelog"
+    }
+}

Makefile

@@ -242,15 +242,23 @@ lint: ## Run golangci-lint against code.
 	GOBIN=$(LOCALBIN) go install github.com/golangci/golangci-lint/cmd/golangci-lint@$(GOLANG_CI_LINT_VERSION)
 	$(LOCALBIN)/golangci-lint run
 
+.PHONY: archive
+archive:
+	cp -r bin/* $(ARTIFACTS)
+
+.PHONY: release
+release:
+	./hack/release.sh
+
 ##@ ci targets
 .PHONY: ci-pr
-ci-pr: build test docker-build docker-push docker-build-certificates docker-push-certificates
+ci-pr: build test
 
 .PHONY: ci-main
 ci-main: build docker-build docker-push docker-build-certificates docker-push-certificates
 
 .PHONY: ci-release
-ci-release: build docker-build docker-push docker-build-certificates docker-push-certificates
+ci-release: build docker-build docker-push docker-build-certificates docker-push-certificates archive release
 
 .PHONY: clean
 clean:

hack/release.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+# standard bash error handling
+set -o nounset # treat unset variables as an error and exit immediately.
+set -o errexit # exit immediately when a command fails.
+set -E         # needs to be set if we want the ERR trap
+
+readonly API_GATEWAY_DIR="/home/prow/go/src/github.com/kyma-project/api-gateway"
+
+# locally delete the stable tag in order to have all the change logs listed under the new release version
+delete_stable_tag() {
+    if [[ $(git tag -l stable) ]]; then
+        git tag -d stable
+    fi
+}
+
+get_new_release_version() {
+    # get the list of tags in a reverse chronological order
+    TAG_LIST=($(git tag --sort=-creatordate))
+    NEW_RELEASE_VERSION=${TAG_LIST[0]}
+}
+
+get_current_release_version() {
+    # get the list of tags in a reverse chronological order excluding release candidate tags
+    TAG_LIST_WITHOUT_RC=($(git tag --sort=-creatordate | grep -v -e "-rc"))
+    if [[ $NEW_RELEASE_VERSION == *"-rc"* ]]; then
+        CURRENT_RELEASE_VERSION=${TAG_LIST_WITHOUT_RC[0]}
+    else
+        CURRENT_RELEASE_VERSION=${TAG_LIST_WITHOUT_RC[1]}
+    fi
+}
+
+main() {
+    git remote add origin git@github.com:kyma-project/api-gateway.git
+    delete_stable_tag
+    get_new_release_version
+    get_current_release_version
+
+    # generate release changelog
+    docker run --rm -v "${API_GATEWAY_DIR}":/repository -w /repository -e FROM_TAG="${CURRENT_RELEASE_VERSION}" -e NEW_RELEASE_TITLE="${NEW_RELEASE_VERSION}" -e GITHUB_AUTH="${BOT_GITHUB_TOKEN}" -e CONFIG_FILE=.github/package.json eu.gcr.io/kyma-project/changelog-generator:0.2.0 sh /app/generate-release-changelog.sh
+    # release api-gateway with release notes generated by changelog-generator
+    curl -sL https://git.io/goreleaser | VERSION=v0.118.2 bash  -s --  --release-notes .changelog/release-changelog.md
+}
+
+main