From 5208386ab18a3e7873b4ec9a9efa9c8aeaddc7b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabiano=20Fid=C3=AAncio?= <fabiano.fidencio@intel.com>
Date: Tue, 3 Oct 2023 14:20:23 +0200
Subject: [PATCH] packaging: Build the kata-agent
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Let's add the needed functions to start building the kata-agent, with or
without the OPA support.

For now this build is not used as part of the rootfs build, but later on
this will (not as part of this series, though).

Fixes: #8099

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>
---
 .../kata-deploy/local-build/Makefile          |  6 +++
 .../kata-deploy-binaries-in-docker.sh         |  2 +
 .../local-build/kata-deploy-binaries.sh       | 35 ++++++++++++++++++
 tools/packaging/static-build/agent/Dockerfile | 21 +++++++++++
 .../static-build/agent/build-static-agent.sh  | 37 +++++++++++++++++++
 tools/packaging/static-build/agent/build.sh   | 31 ++++++++++++++++
 6 files changed, 132 insertions(+)
 create mode 100644 tools/packaging/static-build/agent/Dockerfile
 create mode 100755 tools/packaging/static-build/agent/build-static-agent.sh
 create mode 100755 tools/packaging/static-build/agent/build.sh

diff --git a/tools/packaging/kata-deploy/local-build/Makefile b/tools/packaging/kata-deploy/local-build/Makefile
index 041cd5c800..db9218ac22 100644
--- a/tools/packaging/kata-deploy/local-build/Makefile
+++ b/tools/packaging/kata-deploy/local-build/Makefile
@@ -52,6 +52,12 @@ serial-targets:
 %-tarball-build: $(MK_DIR)/dockerbuild/install_yq.sh
 	$(call BUILD,$*)
 
+agent-tarball:
+	${MAKE} $@-build
+
+agent-opa-tarball:
+	${MAKE} $@-build
+
 agent-ctl-tarball:
 	${MAKE} $@-build
 
diff --git a/tools/packaging/kata-deploy/local-build/kata-deploy-binaries-in-docker.sh b/tools/packaging/kata-deploy/local-build/kata-deploy-binaries-in-docker.sh
index 47cf2dd1dd..64f505cd50 100755
--- a/tools/packaging/kata-deploy/local-build/kata-deploy-binaries-in-docker.sh
+++ b/tools/packaging/kata-deploy/local-build/kata-deploy-binaries-in-docker.sh
@@ -84,6 +84,7 @@ ARTEFACT_REGISTRY_PASSWORD="${ARTEFACT_REGISTRY_PASSWORD:-}"
 TARGET_BRANCH="${TARGET_BRANCH:-}"
 BUILDER_REGISTRY="${BUILDER_REGISTRY:-}"
 PUSH_TO_REGISTRY="${PUSH_TO_REGISTRY:-"no"}"
+AGENT_CONTAINER_BUILDER="${AGENT_CONTAINER_BUILDER:-}"
 INITRAMFS_CONTAINER_BUILDER="${INITRAMFS_CONTAINER_BUILDER:-}"
 KERNEL_CONTAINER_BUILDER="${KERNEL_CONTAINER_BUILDER:-}"
 OVMF_CONTAINER_BUILDER="${OVMF_CONTAINER_BUILDER:-}"
@@ -106,6 +107,7 @@ docker run \
 	--env TARGET_BRANCH="${TARGET_BRANCH}" \
 	--env BUILDER_REGISTRY="${BUILDER_REGISTRY}" \
 	--env PUSH_TO_REGISTRY="${PUSH_TO_REGISTRY}" \
+	--env AGENT_CONTAINER_BUILDER="${AGENT_CONTAINER_BUILDER}" \
 	--env INITRAMFS_CONTAINER_BUILDER="${INITRAMFS_CONTAINER_BUILDER}" \
 	--env KERNEL_CONTAINER_BUILDER="${KERNEL_CONTAINER_BUILDER}" \
 	--env OVMF_CONTAINER_BUILDER="${OVMF_CONTAINER_BUILDER}" \
diff --git a/tools/packaging/kata-deploy/local-build/kata-deploy-binaries.sh b/tools/packaging/kata-deploy/local-build/kata-deploy-binaries.sh
index 0000ad7104..fcbade0113 100755
--- a/tools/packaging/kata-deploy/local-build/kata-deploy-binaries.sh
+++ b/tools/packaging/kata-deploy/local-build/kata-deploy-binaries.sh
@@ -22,6 +22,7 @@ readonly static_build_dir="${repo_root_dir}/tools/packaging/static-build"
 readonly version_file="${repo_root_dir}/VERSION"
 readonly versions_yaml="${repo_root_dir}/versions.yaml"
 
+readonly agent_builder="${static_build_dir}/agent/build.sh"
 readonly clh_builder="${static_build_dir}/cloud-hypervisor/build-static-clh.sh"
 readonly firecracker_builder="${static_build_dir}/firecracker/build-static-firecracker.sh"
 readonly initramfs_builder="${static_build_dir}/initramfs/build.sh"
@@ -81,6 +82,8 @@ options:
 -s             	      : Silent mode (produce output in case of failure only)
 --build=<asset>       :
 	all
+	agent
+	agent-opa
 	agent-ctl
 	cloud-hypervisor
 	cloud-hypervisor-glibc
@@ -625,6 +628,32 @@ install_ovmf_sev() {
 	install_ovmf "sev" "edk2-sev.tar.gz"
 }
 
+install_agent_helper() {
+	agent_policy="${1:-no}"
+
+	latest_artefact="$(git log -1 --pretty=format:"%h" ${repo_root_dir}/src/agent)"
+	latest_builder_image="$(get_agent_image_name)"
+
+	install_cached_tarball_component \
+		"${build_target}" \
+		"${latest_artefact}" \
+		"${latest_builder_image}" \
+		"${final_tarball_name}" \
+		"${final_tarball_path}" \
+		&& return 0
+
+	info "build static agent"
+	DESTDIR="${destdir}" AGENT_POLICY=${agent_policy} "${agent_builder}"
+}
+
+install_agent() {
+	install_agent_helper
+}
+
+install_agent_opa() {
+	install_agent_helper "yes"
+}
+
 install_tools_helper() {
 	tool=${1}
 
@@ -720,6 +749,10 @@ handle_build() {
 		install_virtiofsd
 		;;
 
+	agent) install_agent ;;
+
+	agent-opa) install_agent_opa ;;
+
 	agent-ctl) install_agent_ctl ;;
 
 	cloud-hypervisor) install_clh ;;
@@ -827,6 +860,8 @@ main() {
 	local build_targets
 	local silent
 	build_targets=(
+		agent
+		agent-opa
 		agent-ctl
 		cloud-hypervisor
 		firecracker
diff --git a/tools/packaging/static-build/agent/Dockerfile b/tools/packaging/static-build/agent/Dockerfile
new file mode 100644
index 0000000000..c72104cb59
--- /dev/null
+++ b/tools/packaging/static-build/agent/Dockerfile
@@ -0,0 +1,21 @@
+# Copyright (c) 2023 Intel
+#
+# SPDX-License-Identifier: Apache-2.0
+
+FROM alpine:3.18
+ARG RUST_TOOLCHAIN
+
+SHELL ["/bin/ash", "-o", "pipefail", "-c"]
+RUN apk --no-cache add \
+        bash \
+        curl \
+        gcc \
+        git \
+        libcap-ng-static \
+        libseccomp-static \
+        make \
+        musl-dev \
+        openssl-dev \
+        openssl-libs-static \
+        protoc && \
+    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain ${RUST_TOOLCHAIN}
diff --git a/tools/packaging/static-build/agent/build-static-agent.sh b/tools/packaging/static-build/agent/build-static-agent.sh
new file mode 100755
index 0000000000..1d7389c33a
--- /dev/null
+++ b/tools/packaging/static-build/agent/build-static-agent.sh
@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2023 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+source "${script_dir}/../../scripts/lib.sh"
+
+init_env() {
+	source "$HOME/.cargo/env"
+
+	export LIBC=musl
+	export LIBSECCOMP_LINK_TYPE=static
+	export LIBSECCOMP_LIB_PATH=/usr/lib
+
+	# This is needed to workaround
+	# https://github.com/sfackler/rust-openssl/issues/1624
+	export OPENSSL_NO_VENDOR=Y
+}
+
+build_agent_from_source() {
+	echo "build agent from source"
+
+	init_env
+
+	cd src/agent
+	DESTDIR=${DESTDIR} AGENT_POLICY=${AGENT_POLICY} make
+	DESTDIR=${DESTDIR} AGENT_POLICY=${AGENT_POLICY} make install
+}
+
+build_agent_from_source $@
diff --git a/tools/packaging/static-build/agent/build.sh b/tools/packaging/static-build/agent/build.sh
new file mode 100755
index 0000000000..d847092e4d
--- /dev/null
+++ b/tools/packaging/static-build/agent/build.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2023 Intel
+#
+# SPDX-License-Identifier: Apache-2.0
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+readonly agent_builder="${script_dir}/build-static-agent.sh"
+
+source "${script_dir}/../../scripts/lib.sh"
+
+container_image="${AGENT_CONTAINER_BUILDER:-$(get_agent_image_name)}"
+[ "${CROSS_BUILD}" == "true" ] && container_image="${container_image}-cross-build"
+
+sudo docker pull ${container_image} || \
+	(sudo docker $BUILDX build $PLATFORM \
+	    	--build-arg RUST_TOOLCHAIN="$(get_from_kata_deps "languages.rust.meta.newest-version")" \
+		-t "${container_image}" "${script_dir}" && \
+	 # No-op unless PUSH_TO_REGISTRY is exported as "yes"
+	 push_to_registry "${container_image}")
+
+sudo docker run --rm -i -v "${repo_root_dir}:${repo_root_dir}" \
+	--env DESTDIR=${DESTDIR} \
+	--env AGENT_POLICY=${AGENT_POLICY:-no} \
+	-w "${repo_root_dir}" \
+	"${container_image}" \
+	bash -c "${agent_builder}"