Add release script

Author: cimnine

release.sh

@@ -0,0 +1,189 @@
+#!/bin/bash
+
+DEFAULT_REPO="cimnine/netbox-docker"
+# DEFAULT_REPO=netbox-community/netbox-docker
+REPO="${REPO-${DEFAULT_REPO}}"
+
+echomoji() {
+  EMOJI=${1}
+  TEXT=${2}
+  shift 2
+  if [ -z "$DISABLE_EMOJI" ]; then
+    echo "${EMOJI}" "${@}"
+  else
+    echo "${TEXT}" "${@}"
+  fi
+}
+
+echo_nok() {
+  echomoji "❌" "!" "${@}"
+}
+echo_ok() {
+  echomoji "✅" "-" "${@}"
+}
+echo_hint() {
+  echomoji "👉" ">" "${@}"
+}
+
+# check errors shall exit with code 1
+
+check_clean_repo() {
+  changes=$(git status --porcelain 2>/dev/null)
+  if [ ${?} ] && [ -n "$changes" ]; then
+    echo_nok "There are git changes pending:"
+    echo "$changes"
+    echo_hint "Please clean the repository before continueing: git stash --include-untracked"
+    exit 1
+  fi
+  echo_ok "Repository has no pending changes."
+}
+
+check_branch() {
+  expected_branch="${1}"
+  actual_branch=$(git rev-parse --abbrev-ref HEAD 2>/dev/null)
+  if [ ${?} ] && [ "${actual_branch}" != "${expected_branch}" ]; then
+    echo_nok "Current branch should be '${expected_branch}', but is '${actual_branch}'."
+    echo_hint "Please change to the '${expected_branch}' branch: git checkout ${expected_branch}"
+    exit 1
+  fi
+  echo_ok "The current branch is '${actual_branch}'."
+}
+
+check_upstream() {
+  expected_upstream_branch="origin/${1}"
+  actual_upstream_branch=$(git rev-parse --abbrev-ref '@{upstream}' 2>/dev/null)
+  if [ ${?} ] && [ "${actual_upstream_branch}" != "${expected_upstream_branch}" ]; then
+    echo_nok "Current upstream branch should be '${expected_upstream_branch}', but is '${actual_upstream_branch}'."
+    echo_hint "Please set '${expected_upstream_branch}' as the upstream branch: git branch --set-upstream-to=${expected_upstream_branch}"
+    exit 1
+  fi
+  echo_ok "The current upstream branch is '${actual_upstream_branch}'."
+}
+
+check_origin() {
+  expected_origin="git@github.com:${REPO}.git"
+  actual_origin=$(git remote get-url origin 2>/dev/null)
+  if [ ${?} ] && [ "${actual_origin}" != "${expected_origin}" ]; then
+    echo_nok "The url of origin is '${actual_origin}', but '${expected_origin}' is expected."
+    echo_hint "Please set '${expected_origin}' as the url for origin: git origin set-url '${expected_origin}'"
+    exit 1
+  fi
+  echo_ok "The current origin url is '${actual_origin}'."
+}
+
+check_latest() {
+  git fetch --tags origin
+
+  local_head_commit=$(git rev-parse HEAD 2>/dev/null)
+  remote_head_commit=$(git rev-parse FETCH_HEAD 2>/dev/null)
+  if [ "${local_head_commit}" != "${remote_head_commit}" ]; then
+    echo_nok "HEAD is at '${local_head_commit}', but FETCH_HEAD is at '${remote_head_commit}'."
+    echo_hint "Please ensure that you have pushed and pulled all the latest chanegs: git pull --prune --rebase origin; git push origin"
+    exit 1
+  fi
+  echo_ok "HEAD and FETCH_HEAD both point to '${local_head_commit}'."
+}
+
+check_tag() {
+  local tag
+
+  tag=$(<VERSION)
+  if git rev-parse "${tag}" 2>/dev/null >/dev/null; then
+    echo_nok "The tag '${tag}' already points to '$(git rev-parse "${tag}" 2>/dev/null)'."
+    echo_hint "Please ensure that the 'VERSION' file has been updated before trying to release: echo X.Y.Z > VERSION"
+    exit 1
+  fi
+  echo_ok "The tag '${tag}' does not exist yet."
+}
+
+check_develop() {
+  echomoji 📋 "?" "Checking 'develop' branch"
+
+  check_branch develop
+  check_upstream develop
+  check_clean_repo
+  check_latest
+}
+
+check_release() {
+  echomoji 📋 "?" "Checking 'release' branch"
+
+  check_upstream release
+  check_clean_repo
+  check_latest
+}
+
+# git errors shall exit with code 2
+
+git_switch() {
+  echomoji 🔀 "≈" "Switching to '${1}' branch…"
+  if ! git checkout "${1}" >/dev/null; then
+    echo_nok "It was not possible to switch to the branch '${1}'."
+    exit 2
+  fi
+  echo_ok "The branch is now '${1}'."
+}
+
+git_tag() {
+  echomoji 🏷 "X" "Tagging version '${1}'…"
+  if ! git tag "${1}"; then
+    echo_nok "The tag '${1}' was not created because of an error."
+    exit 2
+  fi
+  echo_ok "The tag '$(<VERSION)' was created."
+}
+
+git_push() {
+  echomoji ⏩ "»" "Pushing the tag '${2}' to '${1}'…"
+  if ! git push "${1}" "${2}"; then
+    echo_nok "The tag '${2}' could not be pushed to '${1}'."
+    exit 2
+  fi
+  echo_ok "The tag '${2}' was pushed."
+}
+
+git_merge() {
+  echomoji ⏩ "»" "Merging '${1}'…"
+  if ! git merge --no-ff "${1}"; then
+    echo_nok "The branch '${1}' could not be merged."
+    exit 2
+  fi
+  echo_ok "The branch '${2}' was merged."
+}
+
+git_merge() {
+  echomoji ⏩ "»" "Rebasing onto '${1}'…"
+  if ! git rebase "${1}"; then
+    echo_nok "Could not rebase onto '${1}'."
+    exit 2
+  fi
+  echo_ok "Rebased onto '${2}'."
+}
+
+###
+# MAIN
+###
+
+echomoji 📋 "▶︎" "Checking pre-requisites for releasing '$(<VERSION)'"
+
+check_origin
+
+check_develop
+check_tag
+
+git_switch release
+check_release
+
+echomoji 📋 "▶︎" "Releasing '$(<VERSION)'"
+
+git_merge develop
+check_tag
+git_tag "$(<VERSION)"
+
+git_push "origin" release
+git_push "origin" "$(<VERSION)"
+
+git_switch develop
+git_rebase release
+
+echomoji ✅ "◼︎" "The release of '$(<VERSION)' is complete."