1#!/bin/bash
2# Copyright 2019 The Go Authors. All rights reserved.
3# Use of this source code is governed by a BSD-style
4# license that can be found in the LICENSE file.
5
6cd "$(git rev-parse --show-toplevel)"
7
8read -p "What is the next release version (e.g., 'v1.26.0')?  " VERSION
9SEMVER_REGEX='^v\([0-9]*\)[.]\([0-9]*\)[.]\([0-9]*\)\([.a-zA-Z0-9A-Z-]*\)$'
10if ! [[ -z $(echo $VERSION | sed -e "s/$SEMVER_REGEX//") ]]; then
11	echo; echo "invalid: must be a semver string"; exit 1
12fi
13VERSION_MAJOR=$(echo $VERSION | sed -e "s/$SEMVER_REGEX/\1/")
14VERSION_MINOR=$(echo $VERSION | sed -e "s/$SEMVER_REGEX/\2/")
15VERSION_PATCH=$(echo $VERSION | sed -e "s/$SEMVER_REGEX/\3/")
16VERSION_PRERELEASE=$(echo $VERSION | sed -e "s/$SEMVER_REGEX/\4/")
17if ! [[ "$VERSION_MAJOR" =~ ^1$ ]]; then
18	echo; echo "invalid: major version must be 1"; exit 1
19fi
20if ! [[ -z $VERSION_PRERELEASE ]] && ! [[ "$VERSION_PRERELEASE" =~ ^-rc[.][0-9]+$ ]]; then
21	echo; echo "invalid: pre-release suffix must be empty or '-rc.X'"; exit 1
22fi
23VERSION_PRERELEASE=${VERSION_PRERELEASE#"-"} # trim possible leading dash
24
25function version_string() {
26	VERSION_STRING="v${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}"
27	if ! [[ -z $VERSION_PRERELEASE ]]; then
28		VERSION_STRING="${VERSION_STRING}-${VERSION_PRERELEASE}"
29	fi
30	echo $VERSION_STRING
31}
32
33read -p "Were there any changes to the generator that relies on new runtime functionality?  " YN
34case $YN in
35[Yy]* )
36	read -p "  What minor version of the runtime is required now?  " GEN_VERSION
37	if ! [[ "$GEN_VERSION" =~ ^[0-9]+$ ]]; then echo; echo "invalid: must be an integer"; exit 1; fi;;
38[Nn]* ) ;;
39* ) echo; echo "invalid: must be 'yes' or 'no'"; exit 1;;
40esac
41
42read -p "Were there any dropped functionality in the runtime for old generated code?  " YN
43case $YN in
44[Yy]* )
45	read -p "  What minor version of the runtime is required now?  " MIN_VERSION
46	if ! [[ "$MIN_VERSION" =~ ^[0-9]+$ ]]; then echo; echo "invalid: must be an integer"; exit 1; fi;;
47[Nn]* ) ;;
48* ) echo; echo "invalid: must be 'yes' or 'no'"; exit 1;;
49esac
50
51
52echo
53echo "Preparing changes to release $(version_string)."
54echo
55
56set -e
57
58# Create a new branch to contain the release changes.
59if [[ $(git branch --list release) ]]; then
60	echo "error: release branch already exists"; exit 1
61fi
62git change release
63git sync
64
65# Create commit for actual release.
66sed -i -e "s/\(\s*Minor\s*=\s*\)[0-9]*/\1$VERSION_MINOR/" internal/version/version.go
67sed -i -e "s/\(\s*Patch\s*=\s*\)[0-9]*/\1$VERSION_PATCH/" internal/version/version.go
68sed -i -e "s/\(\s*PreRelease\s*=\s*\)\"[^\"]*\"/\1\"$VERSION_PRERELEASE\"/" internal/version/version.go
69if ! [[ -z $GEN_VERSION ]]; then
70	sed -i -e "s/\(\s*GenVersion\s*=\s*\)[0-9]*/\1$GEN_VERSION/" runtime/protoimpl/version.go
71fi
72if ! [[ -z $MIN_VERSION ]]; then
73	sed -i -e "s/\(\s*MinVersion\s*=\s*\)[0-9]*/\1$MIN_VERSION/" runtime/protoimpl/version.go
74fi
75git commit -a -m "all: release $(version_string)"
76
77# Build release binaries.
78go test -mod=vendor -timeout=60m -count=1 integration_test.go "$@" -buildRelease
79
80# Create commit to start development after release.
81VERSION_PRERELEASE="${VERSION_PRERELEASE}.devel" # append ".devel"
82VERSION_PRERELEASE="${VERSION_PRERELEASE#"."}"   # trim possible leading "."
83sed -i -e "s/\(\s*PreRelease\s*=\s*\)\"[^\"]*\"/\1\"$VERSION_PRERELEASE\"/" internal/version/version.go
84git commit -a -m "all: start $(version_string)"
85
86echo
87echo "Release changes prepared. Additional steps:"
88echo "  1) Submit the changes:"
89echo "    a. Mail out the changes: git mail HEAD"
90echo "    b. Request a review on the changes and merge them."
91echo "  2) Tag a new release on GitHub:"
92echo "    a. Write release notes highlighting notable changes."
93echo "    b. Attach pre-compiled binaries as assets to the release."
94echo
95