release: Add script to tag repos

Add helper script to tag repos.

- Check all repos are in the same version
- Create annotated tags
- Push tags to the repos

Signed-off-by: Jose Carlos Venegas Munoz <jose.carlos.venegas.munoz@intel.com>

release/README.md

@@ -0,0 +1,18 @@
+# Release tools #
+
+This directory contains tools for Kata Containers releases.
+
+## tag_repos.sh ##
+
+The `tag_repos.sh` script is used to create tags for the Kata Containers
+repositories. This script make sure that all the repositories are in the
+same version (by checking the VERSION file).
+
+It will create an **annotated tag** for the new release version for the
+following repositories:
+
+- agent.
+- proxy.
+- runtime.
+- shim.
+- throttle.

release/tag_repos.sh

@@ -0,0 +1,148 @@
+#!/bin/bash
+#
+# Copyright (c) 2018 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+tmp_dir=$(mktemp -d -t tag-repos-tmp.XXXXXXXXXX)
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+script_name="$(basename "${BASH_SOURCE[0]}")"
+OWNER=${OWNER:-"kata-containers"}
+PROJECT="Kata Containers"
+PUSH="${PUSH:-"false"}"
+commit="master"
+readonly URL_RAW_FILE="https://raw.githubusercontent.com/${OWNER}"
+#The runtime version is used as reference of latest release
+readonly kata_version=$(curl -Ls "${URL_RAW_FILE}/runtime/${commit}/VERSION" | grep  -v -P "^#")
+
+function usage() {
+
+	cat << EOT
+Usage: ${script_name} [options] <args>
+This script creates a new release for ${PROJECT}
+It tags and create release for:
+EOT
+	for r in "${repos[@]}";do
+		echo "  - ${r}"
+	done
+
+	cat << EOT
+
+Args:
+status : Get Current ${PROJECT} tags status
+tag    : Create tags for ${PROJECT}
+
+Options:
+-h : Show this help
+-p : push tags
+
+EOT
+
+}
+
+finish() {
+	rm -rf "$tmp_dir"
+}
+
+trap finish EXIT
+
+die() {
+	echo >&2 "ERROR: $*"
+	exit 1
+}
+
+info() {
+	echo "INFO: $*"
+}
+
+repos=(
+	"runtime"
+	"proxy"
+	"shim"
+	"agent"
+	"ksm-throttler"
+)
+
+check_versions(){
+
+	info "Tagging ${PROJECT} with version ${kata_version}"
+	info "Check all repos has version ${kata_version} in VERSION file"
+
+	for repo in "${repos[@]}"; do
+		repo_version=$(curl -Ls "${URL_RAW_FILE}/${repo}/${commit}/VERSION" | grep  -v -P "^#")
+		info "${repo} is in $repo_version"
+		[ "${repo_version}" == "${kata_version}" ] || die "${repo} is not in version ${kata_version}"
+	done
+}
+
+tag_repos(){
+
+	info "Creating tag ${kata_version} in all repos"
+	for repo in "${repos[@]}"; do
+		git clone --quiet "git@github.com:${OWNER}/${repo}.git"
+		pushd "${repo}"
+		git fetch origin --tags 
+		if git rev-parse -q --verify "refs/tags/${kata_version}" ; then
+			info "$repo already has tag "
+		else
+			info "Creating tag ${kata_version} for ${repo}"
+			git tag -a "${kata_version}" -s -m "${PROJECT} release ${kata_version}"
+		fi
+		popd
+	done
+}
+
+push_tags(){
+	info "Pushing tags to repos"
+	for repo in "${repos[@]}"; do
+		pushd "${repo}"
+		git push origin "${kata_version}"
+		popd
+	done
+}
+
+
+while getopts "hp" opt
+do
+	case $opt in
+		h)	usage && exit 0 ;;
+		p)	PUSH="true" ;;
+	esac
+done
+shift $(( $OPTIND - 1 ))
+
+subcmd=${1:-""}
+
+[ -z "${subcmd}" ] && usage && exit 0
+
+pushd "${tmp_dir}"
+
+case "${subcmd}" in
+	status)
+		check_versions
+	;;
+	tag)
+		check_versions
+		# Tag versions that does not have VESIONS file
+		# But we want to know the version compatrible with a kata release.
+		repos+=("tests")
+		repos+=("osbuilder")
+		tag_repos
+		if [ "${PUSH}" == "true" ];then
+			push_tags
+		else
+			info "tags not pushed, use -p option to push the tags"
+		fi
+	;;
+	*)
+		usage && die "Invalid argument ${subcmd}"
+	;;
+
+esac
+
+popd