Add release flow (kyma-project#31)

* Add release flow

* Release using branch name as input

* Fix `needs` input

* Fix `needs` input

* Change workflow to be triggered manually

* No inputs for manual trigger

.github/workflows/create-release.yaml

@@ -0,0 +1,82 @@
+name: Create Release
+run-name: Create Release ${{ inputs.name }}
+
+env:
+  IMAGE_REPO: europe-docker.pkg.dev/kyma-project/prod/eventing-publisher-proxy
+
+on: workflow_dispatch
+
+jobs:
+  verify-release:
+    name: Verify image version
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout EPP repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Verify that the current branch has a name that starts with 'release-'
+        run: |
+          CURRENT_BRANCH=$(git rev-parse --abbrev-ref HEAD)
+          if [[ "$CURRENT_BRANCH" == release-* ]]; then
+            echo "current_branch=$CURRENT_BRANCH" >> $GITHUB_ENV
+            echo "Branch name starts with 'release-'."
+          else
+            echo "Branch name does not start with 'release-'."
+            exit 1
+          fi
+      - name: Get the next release version
+        id: release-version
+        run: |
+          RELEASE_VERSION=$(./scripts/check_artifacts_existence.sh "$current_branch")
+          echo "release_version=$RELEASE_VERSION" >> $GITHUB_OUTPUT
+      - name: Check image tag
+        env:
+          RELEASE_VERSION: ${{ steps.release-version.outputs.RELEASE_VERSION }}
+        run: ./scripts/check_tag_info.sh $RELEASE_VERSION
+    outputs:
+      release_version: ${{ steps.release-version.outputs.release_version }}
+
+  create-draft:
+    name: Create the draft release
+    needs: verify-release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout EPP repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Create changelog
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: ./scripts/create_changelog.sh ${{ needs.release-version.outputs.release_version }}
+      - name: Create the draft release
+        id: create-draft
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          RELEASE_ID=$(./scripts/create_draft_release.sh ${{ needs.release-version.outputs.release_version }})
+          echo "release_id=$RELEASE_ID" >> $GITHUB_OUTPUT
+      - name: Add lightweight tag
+        run: |
+          git tag ${{ needs.release-version.outputs.release_version }}
+          git push origin ${{ needs.release-version.outputs.release_version }}
+      - name: Verify job status
+        run: ./scripts/verify_status.sh ${{ github.ref_name }} 600 10 30
+
+    outputs:
+      release_id: ${{ steps.create-draft.outputs.release_id }}
+
+  publish-release:
+    name: Publish release
+    needs: [verify-release, create-draft]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Publish release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: ./scripts/publish_release.sh ${{ needs.create-draft.outputs.release_id }}

scripts/check_tag_info.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+##############################
+# Check tags in security-scan-config.yaml
+# Image Tag, rc-tag
+##############################
+
+
+# Get release version
+DESIRED_TAG="${1:-"main"}"
+
+# Get eventing-publisher-proxy tag from sec-scanners-config.yaml
+SEC_SCAN_TO_CHECK="${2:-europe-docker.pkg.dev/kyma-project/prod/eventing-publisher-proxy}"
+IMAGE_TAG=$(cat sec-scanners-config.yaml | grep "${SEC_SCAN_TO_CHECK}" | cut -d : -f 2)
+
+# Get rc-tag
+RC_TAG_TO_CHECK="${3:-rc-tag}"
+RC_TAG=$(cat sec-scanners-config.yaml | grep "${RC_TAG_TO_CHECK}" | cut -d : -f 2 | xargs)
+
+# Check IMAGE_TAG and required image tag
+if [[ "$IMAGE_TAG" != "$DESIRED_TAG" ]] || [[ "$RC_TAG" != "$DESIRED_TAG" ]]; then
+  # ERROR: Tag issue
+  echo "Tags are not correct:
+  - wanted: $DESIRED_TAG
+  - security-scanner image tag: $IMAGE_TAG
+  - rc-tag: $RC_TAG"
+  exit 1
+fi
+
+# OK: Everything is fine
+echo "Tags are correct"
+exit 0

scripts/create_changelog.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+
+PREVIOUS_RELEASE=$2 # for testability
+
+# 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
+set -o pipefail # prevents errors in a pipeline from being masked
+
+RELEASE_TAG=$1
+
+REPOSITORY=${REPOSITORY:-kyma-project/eventing-manager}
+GITHUB_URL=https://api.github.com/repos/${REPOSITORY}
+GITHUB_AUTH_HEADER="Authorization: token ${GITHUB_TOKEN}"
+CHANGELOG_FILE="CHANGELOG.md"
+
+if [ "${PREVIOUS_RELEASE}"  == "" ]
+then
+  PREVIOUS_RELEASE=$(git describe --tags --abbrev=0)
+fi
+
+echo "## What has changed" >> ${CHANGELOG_FILE}
+
+git log ${PREVIOUS_RELEASE}..HEAD --pretty=tformat:"%h" --reverse | while read -r commit
+do
+    COMMIT_AUTHOR=$(curl -H "${GITHUB_AUTH_HEADER}" -sS "${GITHUB_URL}/commits/${commit}" | jq -r '.author.login')
+    if [ "${COMMIT_AUTHOR}" != "kyma-bot" ]; then
+      git show -s ${commit} --format="* %s by @${COMMIT_AUTHOR}" >> ${CHANGELOG_FILE}
+    fi
+done
+
+NEW_CONTRIB=$$.new
+
+join -v2 \
+<(curl -H "${GITHUB_AUTH_HEADER}" -sS "${GITHUB_URL}/compare/$(git rev-list --max-parents=0 HEAD)...${PREVIOUS_RELEASE}" | jq -r '.commits[].author.login' | sort -u) \
+<(curl -H "${GITHUB_AUTH_HEADER}" -sS "${GITHUB_URL}/compare/${PREVIOUS_RELEASE}...HEAD" | jq -r '.commits[].author.login' | sort -u) >${NEW_CONTRIB}
+
+if [ -s ${NEW_CONTRIB} ]
+then
+  echo -e "\n## New contributors" >> ${CHANGELOG_FILE}
+  while read -r user
+  do
+    REF_PR=$(grep "@${user}" ${CHANGELOG_FILE} | head -1 | grep -o " (#[0-9]\+)" || true)
+    if [ -n "${REF_PR}" ] #reference found
+    then
+      REF_PR=" in ${REF_PR}"
+    fi
+    echo "* @${user} made first contribution${REF_PR}" >> ${CHANGELOG_FILE}
+  done <${NEW_CONTRIB}
+fi
+
+echo -e "\n**Full changelog**: https://github.com/$REPOSITORY/compare/${PREVIOUS_RELEASE}...${RELEASE_TAG}" >> ${CHANGELOG_FILE}
+
+# cleanup
+rm ${NEW_CONTRIB} || echo "cleaned up"

scripts/create_draft_release.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+# This script returns the id of the draft release
+
+# 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
+set -o pipefail # prevents errors in a pipeline from being masked
+
+RELEASE_TAG=$1
+
+REPOSITORY=${REPOSITORY:-kyma-project/eventing-manager}
+GITHUB_URL=https://api.github.com/repos/${REPOSITORY}
+GITHUB_AUTH_HEADER="Authorization: Bearer ${GITHUB_TOKEN}"
+CHANGELOG_FILE=$(cat CHANGELOG.md)
+
+JSON_PAYLOAD=$(jq -n \
+  --arg tag_name "$RELEASE_TAG" \
+  --arg name "$RELEASE_TAG" \
+  --arg body "$CHANGELOG_FILE" \
+  '{
+    "tag_name": $tag_name,
+    "name": $name,
+    "body": $body,
+    "draft": true
+  }')
+
+CURL_RESPONSE=$(curl -L \
+  -X POST \
+  -H "Accept: application/vnd.github+json" \
+  -H "${GITHUB_AUTH_HEADER}" \
+  -H "X-GitHub-Api-Version: 2022-11-28" \
+  ${GITHUB_URL}/releases \
+  -d "$JSON_PAYLOAD")
+
+echo "$(echo $CURL_RESPONSE | jq -r ".id")"

scripts/get_next_release_version.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# This script returns the next release version depending on the given release-major.minor version
+
+# 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
+set -o pipefail # prevents errors in a pipeline from being masked
+
+BRANCH_NAME="$1"
+
+MAJOR_MINOR_VERSION=${BRANCH_NAME#"release-"}
+
+RESPONSE=$(curl -s "https://api.github.com/repos/kyma-project/eventing-publisher-proxy/releases")
+
+LATEST_PATCH_VERSION=$(echo "$RESPONSE" | jq -r --arg version "$MAJOR_MINOR_VERSION" '
+  map(select(.tag_name | startswith("v" + $version + ".") or startswith($version + ".")))
+  | map(.tag_name | ltrimstr("v") | ltrimstr($version + "."))
+  | map(select(test("^[0-9]+$")))
+  | map(. | tonumber)
+  | max
+  | if . then "\($version).\(.)" else null end
+')
+
+# If no version found, set the patch version to 0
+NEXT_PATCH_VERSION=$(echo "$LATEST_PATCH_VERSION" | awk -F'.' '{print ($3 == "" || $3 == "unset") ? 0 : $3 + 1}')
+
+# Print the next release version
+NEXT_RELEASE_VERSION="$MAJOR_MINOR_VERSION.$NEXT_PATCH_VERSION"
+echo "Next release version: $NEXT_RELEASE_VERSION"

scripts/publish_release.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+# This script publishes a draft release
+
+# 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
+set -o pipefail # prevents errors in a pipeline from being masked
+
+RELEASE_ID=$1
+
+REPOSITORY=${REPOSITORY:-kyma-project/eventing-manager}
+GITHUB_URL=https://api.github.com/repos/${REPOSITORY}
+GITHUB_AUTH_HEADER="Authorization: Bearer ${GITHUB_TOKEN}"
+
+CURL_RESPONSE=$(curl -L \
+  -X POST \
+  -H "Accept: application/vnd.github+json" \
+  -H "${GITHUB_AUTH_HEADER}" \
+  -H "X-GitHub-Api-Version: 2022-11-28" \
+  ${GITHUB_URL}/releases/${RELEASE_ID} \
+  -d '{"draft":false}')

scripts/verify_status.sh

@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+
+echo "Checking status of POST Jobs for Eventing-Manager"
+
+REF_NAME="${1:-"main"}"
+TIMEOUT_TIME="${2:-600}"
+INTERVAL_TIME="${3:-3}"
+INITIAL_WAIT_TIME="${4:-30}"
+
+# Generate job Status URL
+STATUS_URL="https://api.github.com/repos/kyma-project/eventing-manager/commits/${REF_NAME}/status"
+
+# Dates
+START_TIME=$(date +%s)
+TODAY_DATE=$(date '+%Y-%m-%d')
+
+# Retry function
+function retry {
+
+	# Get status result
+	local statusresult=$(curl -L -H "Accept: application/vnd.github+json" -H "X-GitHub-Api-Version: 2022-11-28" ${STATUS_URL})
+
+	# Get overall state
+	fullstatus=$(echo $statusresult | jq '.state' | tr -d '"')
+
+	# Collect latest run related data
+	local latestrun=$(echo $statusresult | jq '.statuses[-1]')
+	local latestrun_state=$(echo $latestrun | jq '.state' | tr -d '"')
+	local latestrun_createdat=$(echo $latestrun | jq '.created_at' | tr -d '"')
+	local latestrun_targeturl=$(echo $latestrun | jq '.target_url' | tr -d '"')
+
+	# Check Today's run data
+	if [[ $latestrun_createdat == *"$TODAY_DATE"* ]]; then
+		echo $latestrun_createdat
+		echo $latestrun_state
+		echo $latestrun_targeturl
+	fi
+
+	# Show all execution for Today
+	echo $statusresult | jq --arg t $TODAY_DATE '.statuses[]|select(.created_at | contains($t))'
+
+	# Date time for time-out
+	local CURRENT_TIME=$(date +%s)
+	local elapsed_time=$((CURRENT_TIME - START_TIME))
+
+	# Check time-out
+	if [ $elapsed_time -ge $TIMEOUT_TIME ]; then
+		echo "Timeout reached. Exiting."
+		exit 1
+	fi
+
+	if [ "$fullstatus" == "success" ]; then
+		echo "Success!"
+	elif [ "$fullstatus" == "failed" ]; then
+		# Show overall state to user
+		echo "$statusresult"
+		echo "Failure! Exiting with an error."
+		exit 1
+	elif [ "$fullstatus" == "pending" ]; then
+		echo "Status is '$fullstatus'. Retrying in $INTERVAL_TIME seconds..."
+		sleep $INTERVAL_TIME
+	else
+		echo "Invalid result: $result"
+		exit 1
+	fi
+
+}
+
+# Initial wait
+sleep $INITIAL_WAIT_TIME
+# Call retry function
+retry
+while [ "$fullstatus" == "pending" ]; do
+	retry
+done