From 769cbd004112a343735d919ba108254291558511 Mon Sep 17 00:00:00 2001
From: Joe Tsai <joetsai@digital-static.net>
Date: Fri, 16 Aug 2019 12:38:48 -0700
Subject: [PATCH] release.bash: add script for making new releases

Change-Id: Ic5754837d1bd93c8b23fc489c6682d1b20dc1c26
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/189922
Reviewed-by: Damien Neil <dneil@google.com>
---
 release.bash | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100755 release.bash

diff --git a/release.bash b/release.bash
new file mode 100755
index 00000000..3326136a
--- /dev/null
+++ b/release.bash
@@ -0,0 +1,94 @@
+#!/bin/bash
+# Copyright 2019 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+cd "$(git rev-parse --show-toplevel)"
+
+read -p "What is the next release version (e.g., 'v1.26.0')?  " VERSION
+SEMVER_REGEX='^v\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)\([.a-zA-Z0-9A-Z-]*\)$'
+if ! [[ -z $(echo $VERSION | sed -e "s/$SEMVER_REGEX//") ]]; then
+	echo; echo "invalid: must be a semver string"; exit 1
+fi
+VERSION_MAJOR=$(echo $VERSION | sed -e "s/$SEMVER_REGEX/\1/")
+VERSION_MINOR=$(echo $VERSION | sed -e "s/$SEMVER_REGEX/\2/")
+VERSION_PATCH=$(echo $VERSION | sed -e "s/$SEMVER_REGEX/\3/")
+VERSION_PRERELEASE=$(echo $VERSION | sed -e "s/$SEMVER_REGEX/\4/")
+if ! [[ "$VERSION_MAJOR" =~ ^1$ ]]; then
+	echo; echo "invalid: major version must be 1"; exit 1
+fi
+if ! [[ -z $VERSION_PRERELEASE ]] && ! [[ "$VERSION_PRERELEASE" =~ ^-rc[.][0-9]+$ ]]; then
+	echo; echo "invalid: pre-release suffix must be empty or '-rc.X'"; exit 1
+fi
+VERSION_PRERELEASE=${VERSION_PRERELEASE#"-"} # trim possible leading dash
+
+function version_string() {
+	VERSION_STRING="v${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}"
+	if ! [[ -z $VERSION_PRERELEASE ]]; then
+		VERSION_STRING="${VERSION_STRING}-${VERSION_PRERELEASE}"
+	fi
+	echo $VERSION_STRING
+}
+
+read -p "Were there any changes to the generator that relies on new runtime functionality?  " YN
+case $YN in
+[Yy]* )
+	read -p "  What minor version of the runtime is required now?  " GEN_VERSION
+	if ! [[ "$GEN_VERSION" =~ ^[0-9]+$ ]]; then echo; echo "invalid: must be an integer"; exit 1; fi;;
+[Nn]* ) ;;
+* ) echo; echo "invalid: must be 'yes' or 'no'"; exit 1;;
+esac
+
+read -p "Were there any dropped functionality in the runtime for old generated code?  " YN
+case $YN in
+[Yy]* )
+	read -p "  What minor version of the runtime is required now?  " MIN_VERSION
+	if ! [[ "$MIN_VERSION" =~ ^[0-9]+$ ]]; then echo; echo "invalid: must be an integer"; exit 1; fi;;
+[Nn]* ) ;;
+* ) echo; echo "invalid: must be 'yes' or 'no'"; exit 1;;
+esac
+
+
+echo
+echo "Preparing changes to release $(version_string)."
+echo
+
+set -e
+
+# Create a new branch to contain the release changes.
+if [[ $(git branch --list release) ]]; then
+	echo "error: release branch already exists"; exit 1
+fi
+git change release
+git sync
+
+# Create commit for actual release.
+sed -i -e "s/\(\s*versionMinor\s*=\s*\)[0-9]*/\1$VERSION_MINOR/" runtime/protoimpl/version.go
+sed -i -e "s/\(\s*versionPatch\s*=\s*\)[0-9]*/\1$VERSION_PATCH/" runtime/protoimpl/version.go
+sed -i -e "s/\(\s*versionPreRelease\s*=\s*\)\"[^\"]*\"/\1\"$VERSION_PRERELEASE\"/" runtime/protoimpl/version.go
+if ! [[ -z $GEN_VERSION ]]; then
+	sed -i -e "s/\(\s*GenVersion\s*=\s*\)[0-9]*/\1$GEN_VERSION/" runtime/protoimpl/version.go
+fi
+if ! [[ -z $MIN_VERSION ]]; then
+	sed -i -e "s/\(\s*MinVersion\s*=\s*\)[0-9]*/\1$MIN_VERSION/" runtime/protoimpl/version.go
+fi
+git commit -a -m "all: release $(version_string)"
+
+# TODO: Build release binaries.
+# go test -mod=vendor -timeout=60m -count=1 integration_test.go "$@" -buildRelease
+
+# Create commit to start development after release.
+VERSION_PRERELEASE="${VERSION_PRERELEASE}.devel" # append ".devel"
+VERSION_PRERELEASE="${VERSION_PRERELEASE#"."}"   # trim possible leading "."
+sed -i -e "s/\(\s*versionPreRelease\s*=\s*\)\"[^\"]*\"/\1\"$VERSION_PRERELEASE\"/" runtime/protoimpl/version.go
+git commit -a -m "all: start $(version_string)"
+
+echo
+echo "Release changes prepared. Additional steps:"
+echo "  1) Submit the changes:"
+echo "    a. Mail out the changes: git mail HEAD"
+echo "    b. Request a review on the changes and merge them."
+echo "  2) Tag a new release on GitHub:"
+echo "    a. Write release notes highlighting notable changes."
+echo "    b. Attach pre-compiled binaries as assets to the release."
+echo