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| 1 | +#!/usr/bin/env bash |
| 2 | + |
| 3 | +# Copyright The OpenTelemetry Authors |
| 4 | +# |
| 5 | +# Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | +# you may not use this file except in compliance with the License. |
| 7 | +# You may obtain a copy of the License at |
| 8 | +# |
| 9 | +# http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | +# |
| 11 | +# Unless required by applicable law or agreed to in writing, software |
| 12 | +# distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | +# See the License for the specific language governing permissions and |
| 15 | +# limitations under the License. |
| 16 | + |
| 17 | +readonly PROGNAME=$(basename "$0") |
| 18 | +readonly PROGDIR=$(readlink -m "$(dirname "$0")") |
| 19 | + |
| 20 | +readonly EXCLUDE_PACKAGES="tools" |
| 21 | +readonly SEMVER_REGEX="v(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)\\.(0|[1-9][0-9]*)(\\-[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?(\\+[0-9A-Za-z-]+(\\.[0-9A-Za-z-]+)*)?" |
| 22 | + |
| 23 | +usage() { |
| 24 | + cat <<- EOF |
| 25 | +Usage: $PROGNAME [OPTIONS] SEMVER_TAG COMMIT_HASH |
| 26 | +
|
| 27 | +Creates git tag for all Go packages in project. |
| 28 | +
|
| 29 | +OPTIONS: |
| 30 | + -h --help Show this help. |
| 31 | +
|
| 32 | +ARGUMENTS: |
| 33 | + SEMVER_TAG Semantic version to tag with. |
| 34 | + COMMIT_HASH Git commit hash to tag. |
| 35 | +EOF |
| 36 | +} |
| 37 | + |
| 38 | +cmdline() { |
| 39 | + local arg commit |
| 40 | + |
| 41 | + for arg |
| 42 | + do |
| 43 | + local delim="" |
| 44 | + case "$arg" in |
| 45 | + # Translate long form options to short form. |
| 46 | + --help) args="${args}-h ";; |
| 47 | + # Pass through for everything else. |
| 48 | + *) [[ "${arg:0:1}" == "-" ]] || delim="\"" |
| 49 | + args="${args}${delim}${arg}${delim} ";; |
| 50 | + esac |
| 51 | + done |
| 52 | + |
| 53 | + # Reset and process short form options. |
| 54 | + eval set -- "$args" |
| 55 | + |
| 56 | + while getopts "h" OPTION |
| 57 | + do |
| 58 | + case $OPTION in |
| 59 | + h) |
| 60 | + usage |
| 61 | + exit 0 |
| 62 | + ;; |
| 63 | + *) |
| 64 | + echo "unknown option: $OPTION" |
| 65 | + usage |
| 66 | + exit 1 |
| 67 | + ;; |
| 68 | + esac |
| 69 | + done |
| 70 | + |
| 71 | + # Positional arguments. |
| 72 | + shift $((OPTIND-1)) |
| 73 | + readonly TAG="$1" |
| 74 | + if [ -z "$TAG" ] |
| 75 | + then |
| 76 | + echo "missing SEMVER_TAG" |
| 77 | + usage |
| 78 | + exit 1 |
| 79 | + fi |
| 80 | + if [[ ! "$TAG" =~ $SEMVER_REGEX ]] |
| 81 | + then |
| 82 | + printf "invalid semantic version: %s\n" "$TAG" |
| 83 | + exit 2 |
| 84 | + fi |
| 85 | + if [[ "$( git tag --list "$TAG" )" ]] |
| 86 | + then |
| 87 | + printf "tag already exists: %s\n" "$TAG" |
| 88 | + exit 2 |
| 89 | + fi |
| 90 | + |
| 91 | + shift |
| 92 | + commit="$1" |
| 93 | + if [ -z "$commit" ] |
| 94 | + then |
| 95 | + echo "missing COMMIT_HASH" |
| 96 | + usage |
| 97 | + exit 1 |
| 98 | + fi |
| 99 | + # Verify rev is for a commit and unify hashes into a complete SHA1. |
| 100 | + readonly SHA="$( git rev-parse --quiet --verify "${commit}^{commit}" )" |
| 101 | + if [ -z "$SHA" ] |
| 102 | + then |
| 103 | + printf "invalid commit hash: %s\n" "$commit" |
| 104 | + exit 2 |
| 105 | + fi |
| 106 | + if [ "$( git merge-base "$SHA" HEAD )" != "$SHA" ] |
| 107 | + then |
| 108 | + printf "commit '%s' not found on this branch\n" "$commit" |
| 109 | + exit 2 |
| 110 | + fi |
| 111 | +} |
| 112 | + |
| 113 | +package_dirs() { |
| 114 | + # Return a list of package directories in the form: |
| 115 | + # |
| 116 | + # package/directory/a |
| 117 | + # package/directory/b |
| 118 | + # deeper/package/directory/a |
| 119 | + # ... |
| 120 | + # |
| 121 | + # Making sure to exclude any packages in the EXCLUDE_PACKAGES regexp. |
| 122 | + find . -mindepth 2 -type f -name 'go.mod' -exec dirname {} \; \ |
| 123 | + | grep -E -v "$EXCLUDE_PACKAGES" \ |
| 124 | + | sed 's/^\.\///' \ |
| 125 | + | sort |
| 126 | +} |
| 127 | + |
| 128 | +git_tag() { |
| 129 | + local tag="$1" |
| 130 | + local commit="$2" |
| 131 | + |
| 132 | + git tag -a "$tag" -s -m "Version $tag" "$commit" |
| 133 | +} |
| 134 | + |
| 135 | +previous_version() { |
| 136 | + local current="$1" |
| 137 | + |
| 138 | + # Requires git > 2.0 |
| 139 | + git tag -l --sort=v:refname \ |
| 140 | + | grep -E "^${SEMVER_REGEX}$" \ |
| 141 | + | grep -v "$current" \ |
| 142 | + | tail -1 |
| 143 | +} |
| 144 | + |
| 145 | +print_changes() { |
| 146 | + local tag="$1" |
| 147 | + local previous |
| 148 | + |
| 149 | + previous="$( previous_version "$tag" )" |
| 150 | + if [ -n "$previous" ] |
| 151 | + then |
| 152 | + printf "\nRaw changes made between %s and %s\n" "$previous" "$tag" |
| 153 | + printf "======================================\n" |
| 154 | + git --no-pager log --pretty=oneline "${previous}..$tag" |
| 155 | + fi |
| 156 | +} |
| 157 | + |
| 158 | +main() { |
| 159 | + local dir |
| 160 | + |
| 161 | + cmdline "$@" |
| 162 | + |
| 163 | + cd "$PROGDIR" || exit 3 |
| 164 | + |
| 165 | + # Create tag for root package. |
| 166 | + git_tag "$TAG" "$SHA" |
| 167 | + printf "created tag: %s\n" "$TAG" |
| 168 | + |
| 169 | + # Create tag for all sub-packages. |
| 170 | + for dir in $( package_dirs ) |
| 171 | + do |
| 172 | + git_tag "${dir}/$TAG" "$SHA" |
| 173 | + printf "created tag: %s\n" "${dir}/$TAG" |
| 174 | + done |
| 175 | + |
| 176 | + print_changes "$TAG" |
| 177 | +} |
| 178 | +main "$@" |
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