tools: Add support for caching RootFS artefacts

Let's add support for caching RootFS artefacts that are generated using
the kata-deploy local-build scripts.

Right now those are not used, but we'll switch to using them very soon
as part of upcoming changes of how we build the components we test in
our CI.

Fixes: #6480

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

tools/packaging/static-build/cache_components_main.sh

@@ -13,6 +13,7 @@ script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 source "${script_dir}/../scripts/lib.sh"
 
 KERNEL_FLAVOUR="${KERNEL_FLAVOUR:-kernel}" # kernel | kernel-experimental | kernel-arm-experimetnal | kernel-dragonball-experimental
+ROOTFS_IMAGE_TYPE="${ROOTFS_IMAGE_TYPE:-image}" # image | initrd
 
 cache_clh_artifacts() {
 	local clh_tarball_name="kata-static-cloud-hypervisor.tar.xz"
@@ -48,6 +49,19 @@ cache_qemu_artifacts() {
 	create_cache_asset "${qemu_tarball_name}" "${current_qemu_version}-${qemu_sha}" "${current_qemu_image}"
 }
 
+cache_rootfs_artifacts() {
+	local osbuilder_last_commit="$(get_last_modification "${repo_root_dir}/tools/osbuilder")"
+	local guest_image_last_commit="$(get_last_modification "${repo_root_dir}/tools/packaging/guest-image")"
+	local agent_last_commit="$(get_last_modification "${repo_root_dir}/src/agent")"
+	local libs_last_commit="$(get_last_modification "${repo_root_dir}/src/libs")"
+	local gperf_version="$(get_from_kata_deps "externals.gperf.version")"
+	local libseccomp_version="$(get_from_kata_deps "externals.libseccomp.version")"
+	local rust_version="$(get_from_kata_deps "languages.rust.meta.newest-version")"
+	local rootfs_tarball_name="kata-static-rootfs-${ROOTFS_IMAGE_TYPE}.tar.xz"
+	local current_rootfs_version="${osbuilder_last_commit}-${guest_image_last_commit}-${agent_last_commit}-${libs_last_commit}-${gperf_version}-${libseccomp_version}-${rust_version}-${ROOTFS_IMAGE_TYPE}"
+	create_cache_asset "${rootfs_tarball_name}" "${current_rootfs_version}" ""
+}
+
 create_cache_asset() {
 	local component_name="${1}"
 	local component_version="${2}"
@@ -76,6 +90,9 @@ Usage: $0 "[options]"
 			  The default KERNEL_FLAVOUR value is "kernel"
 		-n	Nydus cache
 		-q 	QEMU cache
+		-r 	RootFS cache
+			* Export ROOTFS_IMAGE_TYPE="image|initrd" for one of those two types
+			  The default ROOTFS_IMAGE_TYPE value is "image"
 		-h	Shows help
 EOF
 )"
@@ -87,8 +104,9 @@ main() {
 	local kernel_component="${kernel_component:-}"
 	local nydus_component="${nydus_component:-}"
 	local qemu_component="${qemu_component:-}"
+	local rootfs_component="${rootfs_component:-}"
 	local OPTIND
-	while getopts ":cFknqh:" opt
+	while getopts ":cFknqrh:" opt
 	do
 		case "$opt" in
 		c)
@@ -106,6 +124,9 @@ main() {
 		q)
 			qemu_component="1"
 			;;
+		r)
+			rootfs_component="1"
+			;;
 		h)
 			help
 			exit 0;
@@ -124,6 +145,7 @@ main() {
 	[[ -z "${kernel_component}" ]] && \
 	[[ -z "${nydus_component}" ]] && \
 	[[ -z "${qemu_component}" ]] && \
+	[[ -z "${rootfs_component}" ]] && \
 		help && die "Must choose at least one option"
 
 	mkdir -p "${WORKSPACE}/artifacts"
@@ -135,6 +157,7 @@ main() {
 	[ "${kernel_component}" == "1" ] && cache_kernel_artifacts
 	[ "${nydus_component}" == "1" ] && cache_nydus_artifacts
 	[ "${qemu_component}" == "1" ] && cache_qemu_artifacts
+	[ "${rootfs_component}" == "1" ] && cache_rootfs_artifacts
 
 	ls -la "${WORKSPACE}/artifacts/"
 	popd