release: Add release notes automation.

Add script to generate release notes template
for runtime.

Will get the range of changes from two tags.

Get assets information from versions.yaml file.

Fixes: #169

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

release/runtime-release-notes.sh

@@ -0,0 +1,151 @@
+#!/bin/bash
+# Copyright (c) 2018 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+[ -z "${DEBUG}" ] || set -x
+set -o errexit
+set -o nounset
+set -o pipefail
+
+script_dir=$(dirname "$0")
+
+readonly script_name="$(basename "${BASH_SOURCE[0]}")"
+readonly script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+readonly project="kata-containers"
+readonly tmp_dir=$(mktemp -d -t release-notes-tmp.XXXXXXXXXX)
+
+# shellcheck source=../scripts/lib.sh
+source "${script_dir}/../scripts/lib.sh"
+
+exit_handler() {
+	[ -d "${tmp_dir}" ] || rm -rf "${tmp_dir}"
+}
+trap exit_handler EXIT
+
+usage() {
+	return_code=${1:-}
+	cat <<EOT
+Usage ${script_name} <previous-release> <new_release>
+
+Args:
+
+previous-release: will be used as start point to get release notes
+new-release:      new release version that will have the
+
+Example:
+./${script_name} 1.2.0 1.2.1 > notes.md
+
+EOT
+	exit "${return_code}"
+}
+
+get_release_info() {
+
+	docker_version=$(get_from_kata_deps "externals.docker.version" "${new_release}")
+	crio_version=$(get_from_kata_deps "externals.crio.version")
+	cri_containerd_version=$(get_from_kata_deps "externals.cri-containerd.version" "${new_release}")
+	oci_spec_version=$(get_from_kata_deps "specs.oci.version" "${new_release}")
+
+	#Image information
+	image_info=$(get_from_kata_deps "assets.image" "${new_release}")
+
+	# Initrd information
+	initrd_info=$(get_from_kata_deps "assets.initrd" "${new_release}")
+
+	kernel_version=$(get_from_kata_deps "assets.kernel.version" "${new_release}")
+	kernel_url=$(get_from_kata_deps "assets.kernel.url" "${new_release}")
+
+	kata_kernel_config_version="${new_release}-kernel-config"
+	kata_kernel_config_version="${new_release}-kernel-config"
+
+	runtime_version=$(cat "./VERSION")
+}
+
+changes() {
+	echo "## Changes"
+	echo "**FIXME - massage this section by hand to produce a summary please**"
+	git log --merges "${previous_release}".."${new_release}" | awk '/Merge pull/{getline; getline;print }' |
+		while read -r pr; do
+			echo "- ${pr}"
+		done
+
+	echo ""
+
+	echo "## Shortlog"
+	for cr in $(git log --merges "${previous_release}".."${new_release}" | grep 'Merge:' | awk '{print $2".."$3}'); do
+		git log --oneline "$cr"
+	done
+}
+
+print_release_notes() {
+	cat <<EOT
+# Release ${runtime_version}
+
+$(changes)
+
+## Compatibility with Docker
+Kata Containers ${runtime_version} is compatible with Docker ${docker_version}
+
+## Compatibility with CRI-O
+Kata Containers ${runtime_version} is compatible with CRI-O ${crio_version}
+
+## Compatibility with cri-contaienrd
+Kata Containers ${runtime_version} is compatible with cri-contaienrd ${cri_containerd_version}
+
+## OCI Runtime Specification
+Kata Containers ${runtime_version} support the OCI Runtime Specification [${oci_spec_version}][ocispec]
+
+## Kata Linux Containers image
+Agent version: ${new_release}
+
+### Default Image Guest OS:
+${image_info}
+
+### Default Initrd Guest OS:
+${initrd_info}
+
+## Kata Linux Containers Kernel
+Kata Containers ${runtime_version} suggest to use the Linux kernel [${kernel_version}][kernel]
+See the kernel suggested [Guest Kernel patches][kernel-patches]
+See the kernel suggested [Guest Kernel config][kernel-config]
+
+## Installation
+
+Follow the Kata [installation instructions](installation):
+
+## Issues & limitations
+
+More information [Limitations][limitations]
+
+[kernel]: ${kernel_url}/linux-${kernel_version#v}.tar.xz
+[kernel-patches]: https://github.com/kata-containers/packaging/tree/${kata_kernel_config_version}/kernel/patches
+[kernel-config]: https://github.com/kata-containers/packaging/tree/${kata_kernel_config_version}/kernel/configs
+[agent]: https://github.com/kata-containers/agent/releases/tag/${runtime_version}
+[image]: https://github.com/kata-containers/osbuilder/releases/tag/${runtime_version}
+[ocispec]: https://github.com/opencontainers/runtime-spec/releases/tag/${oci_spec_version}
+[limitations]: https://github.com/kata-containers/documentation/blob/master/Limitations.md
+[installation]: https://github.com/kata-containers/documentation/blob/${new_release}/install/README.md
+EOT
+}
+
+main() {
+	previous_release=${1:-}
+	new_release=${2:-}
+	git clone -q "https://github.com/${project}/runtime.git" "${tmp_dir}/runtime"
+	pushd "${tmp_dir}/runtime" >>/dev/null
+	if [ -z "${previous_release}" ]; then
+		echo "previous-release not provided"
+		usage 1
+	fi
+	if [ -z "${new_release}" ]; then
+		echo "new-release not provided"
+		usage 1
+	fi
+	get_release_info
+	print_release_notes
+	popd >>/dev/null
+}
+
+main "$@"