From 8a40f6f23498bcfec6c0a2ebd4f7a1e47f2e1023 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabiano=20Fid=C3=AAncio?= <fabiano.fidencio@intel.com>
Date: Thu, 16 Mar 2023 13:32:38 +0100
Subject: [PATCH] local-build: Use cached Cloud Hypervisor when possible
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

As we've added the support for caching components, let's use them
whenever those are available.

Fixes: #6480

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>
---
 .../local-build/dockerbuild/Dockerfile        |  1 +
 .../local-build/kata-deploy-binaries.sh       | 54 +++++++++++++++++--
 2 files changed, 50 insertions(+), 5 deletions(-)

diff --git a/tools/packaging/kata-deploy/local-build/dockerbuild/Dockerfile b/tools/packaging/kata-deploy/local-build/dockerbuild/Dockerfile
index 2ff5f5ae83..1338f482a2 100644
--- a/tools/packaging/kata-deploy/local-build/dockerbuild/Dockerfile
+++ b/tools/packaging/kata-deploy/local-build/dockerbuild/Dockerfile
@@ -43,6 +43,7 @@ RUN apt-get update && \
   git \
   make \
   unzip \
+  wget \
   xz-utils && \
   apt-get clean && rm -rf /var/lib/apt/lists
 
diff --git a/tools/packaging/kata-deploy/local-build/kata-deploy-binaries.sh b/tools/packaging/kata-deploy/local-build/kata-deploy-binaries.sh
index 79cf5a1411..8b4361097e 100755
--- a/tools/packaging/kata-deploy/local-build/kata-deploy-binaries.sh
+++ b/tools/packaging/kata-deploy/local-build/kata-deploy-binaries.sh
@@ -32,6 +32,9 @@ readonly nydus_builder="${static_build_dir}/nydus/build.sh"
 
 readonly rootfs_builder="${repo_root_dir}/tools/packaging/guest-image/build_image.sh"
 
+readonly jenkins_url="http://jenkins.katacontainers.io"
+readonly cached_artifacts_path="lastSuccessfulBuild/artifact/artifacts"
+
 ARCH=$(uname -m)
 
 workdir="${WORKDIR:-$PWD}"
@@ -87,6 +90,34 @@ EOF
 	exit "${return_code}"
 }
 
+
+cleanup_and_fail() {
+	rm -f "${component_tarball_path}"
+	return 1
+}
+
+install_cached_tarball_component() {
+	local component="${1}"
+	local jenkins_build_url="${2}"
+	local current_version="${3}"
+	local current_image_version="${4}"
+	local component_tarball_name="${5}"
+	local component_tarball_path="${6}"
+
+	local cached_version=$(curl -sfL "${jenkins_build_url}/latest" | awk '{print $1}') || cached_version="none"
+	local cached_image_version=$(curl -sfL "${jenkins_build_url}/latest_image" | awk '{print $1}') || cached_image_version="none"
+
+	[ "${cached_image_version}" != "${current_image_version}" ] && return 1
+	[ "${cached_version}" != "${current_version}" ] && return 1
+
+	info "Using cached tarball of ${component}"
+	echo "Downloading tarball from: ${jenkins_build_url}/${component_tarball_name}"
+	wget "${jenkins_build_url}/${component_tarball_name}" || return cleanup_and_fail
+	wget "${jenkins_build_url}/sha256sum-${component_tarball_name}" || return cleanup_and_fail
+	sha256sum -c "sha256sum-${component_tarball_name}" || return cleanup_and_fail
+	mv "${component_tarball_name}" "${component_tarball_path}"
+}
+
 #Install guest image
 install_image() {
 	info "Create image"
@@ -142,6 +173,15 @@ install_firecracker() {
 
 # Install static cloud-hypervisor asset
 install_clh() {
+	install_cached_tarball_component \
+		"cloud-hypervisor" \
+		"${jenkins_url}/job/kata-containers-main-clh-$(uname -m)/${cached_artifacts_path}" \
+		"$(get_from_kata_deps "assets.hypervisor.cloud_hypervisor.version")" \
+		"" \
+		"${final_tarball_name}" \
+		"${final_tarball_path}" \
+		&& return 0
+
 	if [[ "${ARCH}" == "x86_64" ]]; then
 		export features="tdx"
 	fi
@@ -192,6 +232,11 @@ handle_build() {
 	info "DESTDIR ${destdir}"
 	local build_target
 	build_target="$1"
+
+	export final_tarball_path="${workdir}/kata-static-${build_target}.tar.xz"
+	export final_tarball_name="$(basename ${final_tarball_path})"
+	rm -f ${final_tarball_name}
+
 	case "${build_target}" in
 	all)
 		install_clh
@@ -232,12 +277,11 @@ handle_build() {
 		;;
 	esac
 
-	tarball_name="${workdir}/kata-static-${build_target}.tar.xz"
-	(
+	if [ ! -f "${final_tarball_path}" ]; then
 		cd "${destdir}"
-		sudo tar cvfJ "${tarball_name}" "."
-	)
-	tar tvf "${tarball_name}"
+		sudo tar cvfJ "${final_tarball_path}" "."
+	fi
+	tar tvf "${final_tarball_path}"
 }
 
 silent_mode_error_trap() {