# Copyright (c) 2019-2022 Alibaba Cloud
# Copyright (c) 2019-2022 Ant Group
#
# SPDX-License-Identifier: Apache-2.0
#

# To show variables or targets help on `make help`
# Use the following format:
# '##VAR VARIABLE_NAME: help about variable'
# '##TARGET TARGET_NAME: help about target'
PROJECT_TYPE = kata
PROJECT_NAME = Kata Containers
PROJECT_TAG = kata-containers
PROJECT_URL = https://github.com/kata-containers
PROJECT_COMPONENT = containerd-shim-kata-v2
CONTAINERD_RUNTIME_NAME = io.containerd.kata.v2

include ../../utils.mk

ARCH_DIR = arch
ARCH_FILE_SUFFIX = -options.mk
ARCH_FILE = $(ARCH_DIR)/$(ARCH)$(ARCH_FILE_SUFFIX)

ifeq ($(ARCH), s390x)
default:
	@echo "s390x is not currently supported"
	exit 0
test:
	@echo "s390x is not currently supported"
	exit 0
install:
	@echo "s390x is not currently supported"
	exit 0
else ifeq ($(ARCH), powerpc64le)
default:
	@echo "PowerPC 64 LE is not currently supported"
	exit 0
test:
	@echo "PowerPC 64 LE is not currently supported"
	exit 0
install:
	@echo "PowerPC 64 LE is not currently supported"
	exit 0
else
##TARGET default: build code
default: runtime show-header
##TARGET test: run cargo tests
test:
	@cargo test --all --target $(TRIPLE) $(EXTRA_RUSTFEATURES) -- --nocapture
install: install-runtime install-configs
endif

ifeq (,$(realpath $(ARCH_FILE)))
    $(error "ERROR: invalid architecture: '$(ARCH)'")
else
    # Load architecture-dependent settings
    include $(ARCH_FILE)
endif

ifeq ($(PREFIX),)
PREFIX := /usr
EXEC_PREFIX := $(PREFIX)/local
##VAR BINDIR=<path> is a directory for installing executable programs
BINDIR := $(EXEC_PREFIX)/bin
else
EXEC_PREFIX := $(PREFIX)
# when creating the kata-deploy image, the default installation path for go runtime is $(EXEC_PREFIX)/bin, so we put it here for multiple runtime
BINDIR := $(EXEC_PREFIX)/runtime-rs/bin/
endif

PREFIXDEPS := $(PREFIX)
LIBEXECDIR := $(PREFIXDEPS)/libexec
SHAREDIR := $(PREFIX)/share
DEFAULTSDIR := $(SHAREDIR)/defaults
PROJECT_DIR = $(PROJECT_TAG)
IMAGENAME = $(PROJECT_TAG).img
TARGET = $(PROJECT_COMPONENT)
SYSCONFDIR := /etc
CONFIG_FILE = configuration.toml
HYPERVISOR_DB = dragonball
HYPERVISOR_ACRN = acrn
HYPERVISOR_FC = firecracker
HYPERVISOR_QEMU = qemu
HYPERVISOR_CLH = cloud-hypervisor


DEFAULT_HYPERVISOR ?= $(HYPERVISOR_DB)

##VAR HYPERVISOR=<hypervisor_name> List of hypervisors this build system can generate configuration for.
HYPERVISORS := $(HYPERVISOR_DB) $(HYPERVISOR_ACRN) $(HYPERVISOR_FC) $(HYPERVISOR_QEMU) $(HYPERVISOR_CLH)

DBVALIDHYPERVISORPATHS := []
PKGDATADIR := $(PREFIXDEPS)/share/$(PROJECT_DIR)
KERNELDIR := $(PKGDATADIR)
IMAGEPATH := $(PKGDATADIR)/$(IMAGENAME)

ROOTFSTYPE_EXT4 := \"ext4\"
ROOTFSTYPE_XFS := \"xfs\"
ROOTFSTYPE_EROFS := \"erofs\"
DEFROOTFSTYPE := $(ROOTFSTYPE_EXT4)

PKGLIBEXECDIR := $(LIBEXECDIR)/$(PROJECT_DIR)
FIRMWAREPATH :=
FIRMWAREVOLUMEPATH :=

##VAR DEFVCPUS=<number> Default number of vCPUs
DEFVCPUS := 1
##VAR DEFMAXVCPUS=<number> Default maximum number of vCPUs
DEFMAXVCPUS := 0
##VAR DEFMEMSZ=<number> Default memory size in MiB
DEFMEMSZ := 2048
##VAR DEFMEMSLOTS=<number> Default memory slots
# Cases to consider :
# - nvdimm rootfs image
# - preallocated memory
# - vm template memory
# - hugepage memory
DEFMEMSLOTS := 10
##VAR DEFBRIDGES=<number> Default number of bridges
DEFBRIDGES := 0
DEFENABLEANNOTATIONS := []
DEFDISABLEGUESTSECCOMP := true
DEFDISABLEGUESTEMPTYDIR := false
##VAR DEFAULTEXPFEATURES=[features] Default experimental features enabled
DEFAULTEXPFEATURES := []
DEFDISABLESELINUX := false
##VAR DEFENTROPYSOURCE=[entropy_source] Default entropy source
DEFENTROPYSOURCE := /dev/urandom
DEFVALIDENTROPYSOURCES := [\"/dev/urandom\",\"/dev/random\",\"\"]
DEFDISABLEBLOCK := false
DEFSHAREDFS_CLH_VIRTIOFS := virtio-fs
DEFSHAREDFS_QEMU_VIRTIOFS := virtio-fs
DEFVIRTIOFSDAEMON := $(LIBEXECDIR)/kata-qemu/virtiofsd
ifeq ($(ARCH),x86_64)
DEFVIRTIOFSDAEMON := $(LIBEXECDIR)/virtiofsd
endif
DEFVALIDVIRTIOFSDAEMONPATHS := [\"$(DEFVIRTIOFSDAEMON)\"]
##VAR DEFVIRTIOFSCACHESIZE=<cache_size> Default DAX mapping cache size in MiB
# if value is 0, DAX is not enabled
DEFVIRTIOFSCACHESIZE ?= 0
DEFVIRTIOFSCACHE ?= auto
DEFVIRTIOFSQUEUESIZE ?= 1024
# Format example:
#   [\"-o\", \"arg1=xxx,arg2\", \"-o\", \"hello world\", \"--arg3=yyy\"]
#
# see `virtiofsd -h` for possible options.
# Make sure you quote args.
DEFVIRTIOFSEXTRAARGS ?= [\"--thread-pool-size=1\", \"-o\", \"announce_submounts\"]
DEFENABLEIOTHREADS := false
DEFENABLEVHOSTUSERSTORE := false
DEFVHOSTUSERSTOREPATH := $(PKGRUNDIR)/vhost-user
DEFVALIDVHOSTUSERSTOREPATHS := [\"$(DEFVHOSTUSERSTOREPATH)\"]
DEFFILEMEMBACKEND := ""
DEFVALIDFILEMEMBACKENDS := [\"$(DEFFILEMEMBACKEND)\"]
DEFMSIZE9P := 8192
DEFVFIOMODE := guest-kernel
##VAR DEFSANDBOXCGROUPONLY=<bool> Default cgroup model
DEFSANDBOXCGROUPONLY ?= false
DEFSTATICRESOURCEMGMT_DB ?= false
DEFBINDMOUNTS := []
SED = sed
CLI_DIR = cmd
SHIMV2 = containerd-shim-kata-v2
SHIMV2_OUTPUT = $(CURDIR)/$(SHIMV2)
SHIMV2_DIR = $(CLI_DIR)/$(SHIMV2)
MONITOR = kata-monitor
MONITOR_OUTPUT = $(CURDIR)/$(MONITOR)
MONITOR_DIR = $(CLI_DIR)/kata-monitor
SOURCES := $(shell find . 2>&1 | grep -E '.*\.(c|h|go)$$')
VERSION := ${shell cat ./VERSION}

# List of configuration files to build and install
CONFIGS =
CONFIG_PATHS =
SYSCONFIG_PATHS =
# List of hypervisors known for the current architecture
KNOWN_HYPERVISORS =
# List of hypervisors known for the current architecture
KNOWN_HYPERVISORS =

CONFDIR := $(DEFAULTSDIR)/$(PROJECT_DIR)
SYSCONFDIR := $(SYSCONFDIR)/$(PROJECT_DIR)
##VAR CONFIG_PATH=<path> Main configuration file location for stateless systems
CONFIG_PATH := $(abspath $(CONFDIR)/$(CONFIG_FILE))
##VAR SYSCONFIG=<path> Secondary configuration file location. Note that this takes precedence
# over CONFIG_PATH.
SYSCONFIG := $(abspath $(SYSCONFDIR)/$(CONFIG_FILE))
SHAREDIR := $(SHAREDIR)

ifneq (,$(DBCMD))
    KNOWN_HYPERVISORS += $(HYPERVISOR_DB)
    CONFIG_FILE_DB = configuration-dragonball.toml
    CONFIG_DB = config/$(CONFIG_FILE_DB)
    CONFIG_DB_IN = $(CONFIG_DB).in
    CONFIG_PATH_DB = $(abspath $(CONFDIR)/$(CONFIG_FILE_DB))
    CONFIG_PATHS += $(CONFIG_PATH_DB)
    SYSCONFIG_DB = $(abspath $(SYSCONFDIR)/$(CONFIG_FILE_DB))
    SYSCONFIG_PATHS += $(SYSCONFIG_DB)
    CONFIGS += $(CONFIG_DB)
    # dragonball-specific options (all should be suffixed by "_DB")
    DEFMAXVCPUS_DB := 1
    DEFBLOCKSTORAGEDRIVER_DB := virtio-blk
    DEFNETWORKMODEL_DB := tcfilter
    KERNELPARAMS = console=ttyS1 agent.log_vport=1025
	KERNELTYPE_DB = uncompressed
    KERNEL_NAME_DB = $(call MAKE_KERNEL_NAME,$(KERNELTYPE_DB))
    KERNELPATH_DB = $(KERNELDIR)/$(KERNEL_NAME_DB)
    DEFSANDBOXCGROUPONLY = true
    RUNTIMENAME := virt_container
    PIPESIZE := 1
	DBSHAREDFS := inline-virtio-fs
endif

ifeq ($(DEFAULT_HYPERVISOR),$(HYPERVISOR_DB))
    DEFAULT_HYPERVISOR_CONFIG = $(CONFIG_FILE_DB)
endif
# list of variables the user may wish to override
USER_VARS += ARCH
USER_VARS += BINDIR
USER_VARS += CONFIG_DB_IN
USER_VARS += CONFIG_PATH
USER_VARS += DESTDIR
USER_VARS += DEFAULT_HYPERVISOR
USER_VARS += DBCMD
USER_VARS += DBCTLCMD
USER_VARS += DBPATH
USER_VARS += DBVALIDHYPERVISORPATHS
USER_VARS += DBCTLPATH
USER_VARS += DBVALIDCTLPATHS
USER_VARS += SYSCONFIG
USER_VARS += IMAGENAME
USER_VARS += IMAGEPATH
USER_VARS += DEFROOTFSTYPE
USER_VARS += MACHINETYPE
USER_VARS += KERNELDIR
USER_VARS += KERNELTYPE
USER_VARS += KERNELPATH_DB
USER_VARS += KERNELPATH
USER_VARS += KERNELVIRTIOFSPATH
USER_VARS += FIRMWAREPATH
USER_VARS += FIRMWAREVOLUMEPATH
USER_VARS += MACHINEACCELERATORS
USER_VARS += CPUFEATURES
USER_VARS += DEFMACHINETYPE_CLH
USER_VARS += KERNELPARAMS
USER_VARS += LIBEXECDIR
USER_VARS += LOCALSTATEDIR
USER_VARS += PKGDATADIR
USER_VARS += PKGLIBEXECDIR
USER_VARS += PKGRUNDIR
USER_VARS += PREFIX
USER_VARS += PROJECT_BUG_URL
USER_VARS += PROJECT_NAME
USER_VARS += PROJECT_ORG
USER_VARS += PROJECT_PREFIX
USER_VARS += PROJECT_TAG
USER_VARS += PROJECT_TYPE
USER_VARS += RUNTIME_NAME
USER_VARS += SHAREDIR
USER_VARS += SYSCONFDIR
USER_VARS += DEFVCPUS
USER_VARS += DEFMAXVCPUS
USER_VARS += DEFMAXVCPUS_ACRN
USER_VARS += DEFMAXVCPUS_DB
USER_VARS += DEFMEMSZ
USER_VARS += DEFMEMSLOTS
USER_VARS += DEFBRIDGES
USER_VARS += DEFNETWORKMODEL_DB
USER_VARS += DEFDISABLEGUESTEMPTYDIR
USER_VARS += DEFDISABLEGUESTSECCOMP
USER_VARS += DEFDISABLESELINUX
USER_VARS += DEFAULTEXPFEATURES
USER_VARS += DEFDISABLEBLOCK
USER_VARS += DEFBLOCKSTORAGEDRIVER_DB
USER_VARS += DEFSHAREDFS_CLH_VIRTIOFS
USER_VARS += DEFSHAREDFS_QEMU_VIRTIOFS
USER_VARS += DEFVIRTIOFSDAEMON
USER_VARS += DEFVALIDVIRTIOFSDAEMONPATHS
USER_VARS += DEFVIRTIOFSCACHESIZE
USER_VARS += DEFVIRTIOFSCACHE
USER_VARS += DEFVIRTIOFSQUEUESIZE
USER_VARS += DEFVIRTIOFSEXTRAARGS
USER_VARS += DEFENABLEANNOTATIONS
USER_VARS += DEFENABLEIOTHREADS
USER_VARS += DEFENABLEVHOSTUSERSTORE
USER_VARS += DEFVHOSTUSERSTOREPATH
USER_VARS += DEFVALIDVHOSTUSERSTOREPATHS
USER_VARS += DEFFILEMEMBACKEND
USER_VARS += DEFVALIDFILEMEMBACKENDS
USER_VARS += DEFMSIZE9P
USER_VARS += DEFENTROPYSOURCE
USER_VARS += DEFVALIDENTROPYSOURCES
USER_VARS += DEFSANDBOXCGROUPONLY
USER_VARS += DEFSTATICRESOURCEMGMT_DB
USER_VARS += DEFBINDMOUNTS
USER_VARS += DEFVFIOMODE
USER_VARS += BUILDFLAGS
USER_VARS += RUNTIMENAME
USER_VARS += HYPERVISOR_DB
USER_VARS += PIPESIZE
USER_VARS += DBSHAREDFS
USER_VARS += KATA_INSTALL_GROUP
USER_VARS += KATA_INSTALL_OWNER
USER_VARS += KATA_INSTALL_CFG_PERMS

SOURCES := \
  $(shell find . 2>&1 | grep -E '.*\.rs$$') \
  Cargo.toml

VERSION_FILE := ./VERSION
VERSION := $(shell grep -v ^\# $(VERSION_FILE))
COMMIT_NO := $(shell git rev-parse HEAD 2>/dev/null || true)
COMMIT := $(if $(shell git status --porcelain --untracked-files=no 2>/dev/null || true),${COMMIT_NO}-dirty,${COMMIT_NO})
COMMIT_MSG = $(if $(COMMIT),$(COMMIT),unknown)

EXTRA_RUSTFEATURES :=

ifneq ($(EXTRA_RUSTFEATURES),)
    override EXTRA_RUSTFEATURES := --features $(EXTRA_RUSTFEATURES)
endif


TARGET_PATH = target/$(TRIPLE)/$(BUILD_TYPE)/$(TARGET)

##VAR DESTDIR=<path> is a directory prepended to each installed target file
DESTDIR ?= /

GENERATED_CODE = crates/shim/src/config.rs

RUNTIME_NAME=$(TARGET)
RUNTIME_VERSION=$(VERSION)

GENERATED_VARS = \
		VERSION \
		CONFIG_DB_IN \
		$(USER_VARS)


GENERATED_REPLACEMENTS= \
    PROJECT_NAME \
    RUNTIME_NAME \
    CONTAINERD_RUNTIME_NAME \
    RUNTIME_VERSION \
    BINDIR \
    COMMIT

GENERATED_FILES :=

GENERATED_FILES += $(GENERATED_CODE)

# Display name of command and it's version (or a message if not available).
#
# Arguments:
#
# 1: Name of command
define get_command_version
$(shell printf "%s: %s\\n" $(1) "$(or $(shell $(1) --version 2>/dev/null), (not available))")
endef

define get_toolchain_version
$(shell printf "%s: %s\\n" "toolchain" "$(or $(shell rustup show active-toolchain 2>/dev/null), (unknown))")
endef

# Install a configuration file
# params:
# $1 : file to install
# $2 : directory path where file will be installed
define INSTALL_FILE
	install --mode 0644 -D $1 $(DESTDIR)$2/$(notdir $1);
endef

# Returns the name of the kernel file to use based on the provided KERNELTYPE.
# $1 : KERNELTYPE (compressed or uncompressed)
define MAKE_KERNEL_NAME
$(if $(findstring uncompressed,$1),vmlinux.container,vmlinuz.container)
endef

.DEFAULT_GOAL := default

GENERATED_FILES += $(CONFIGS)

runtime: $(TARGET)

static-checks-build: $(GENERATED_FILES)

$(TARGET): $(GENERATED_FILES) $(TARGET_PATH)

$(TARGET_PATH): $(SOURCES) | show-summary
	@RUSTFLAGS="$(EXTRA_RUSTFLAGS) --deny warnings" cargo build --target $(TRIPLE) --$(BUILD_TYPE) $(EXTRA_RUSTFEATURES)

$(GENERATED_FILES): %: %.in
	@sed \
        $(foreach r,$(GENERATED_REPLACEMENTS),-e 's|@$r@|$($r)|g') \
        $(foreach v,$(GENERATED_VARS),-e "s|@$v@|$($v)|g") \
        $< > $@

##TARGET optimize: optimized  build
optimize: $(SOURCES) | show-summary show-header
	@RUSTFLAGS="-C link-arg=-s $(EXTRA_RUSTFLAGS) --deny warnings" cargo build --target $(TRIPLE) --$(BUILD_TYPE) $(EXTRA_RUSTFEATURES)

##TARGET clean: clean build
clean:
	@cargo clean
	@rm -f $(GENERATED_FILES)
	@rm -f tarpaulin-report.html
	@rm -f $(CONFIGS)

vendor:
	@cargo vendor

##TARGET check: run test
check: $(GENERATED_FILES) standard_rust_check

##TARGET run: build and run agent
run:
	@cargo run --target $(TRIPLE)

show-header:
	@printf "%s - version %s (commit %s)\n\n" "$(TARGET)" "$(VERSION)" "$(COMMIT_MSG)"

show-summary: show-header
	@printf "• Project:\n"
	@printf "  name: $(PROJECT_NAME)\n"
	@printf "  url: $(PROJECT_URL)\n"
	@printf "  component: $(PROJECT_COMPONENT)\n"
	@printf "\n"
	@printf "• Target: $(TARGET)\n"
	@printf "\n"
	@printf "• Architecture: $(ARCH)\n"
	@printf "\n"
	@printf "• Rust:\n"
	@printf "  %s\n" "$(call get_command_version,cargo)"
	@printf "  %s\n" "$(call get_command_version,rustc)"
	@printf "  %s\n" "$(call get_command_version,rustup)"
	@printf "  %s\n" "$(call get_toolchain_version)"
	@printf "\n"
	@printf "• Hypervisors:\n"
	@printf "\tDefault: $(DEFAULT_HYPERVISOR)\n"
	@printf "\tKnown: $(sort $(HYPERVISORS))\n"
	@printf "\tAvailable for this architecture: $(sort $(KNOWN_HYPERVISORS))\n"
	@printf "\n"
	@printf "• Summary:\n"
	@printf "\n"
	@printf "\tdestination install path (DESTDIR) : %s\n" $(abspath $(DESTDIR))
	@printf "\tbinary installation path (BINDIR) : %s\n" $(abspath $(BINDIR))
	@printf "\tbinaries to install :\n"
	@printf \
          "$(foreach b,$(sort $(SHIMV2)),$(shell printf "\\t - $(shell readlink -m $(DESTDIR)/$(BINDIR)/$(b))\\\n"))"
	@printf "\tconfigs to install (CONFIGS) :\n"
	@printf \
	  "$(foreach c,$(sort $(CONFIGS)),$(shell printf "\\t - $(c)\\\n"))"
	@printf "\tinstall paths (CONFIG_PATHS) :\n"
	@printf \
	  "$(foreach c,$(sort $(CONFIG_PATHS)),$(shell printf "\\t - $(c)\\\n"))"
	@printf "\talternate config paths (SYSCONFIG_PATHS) : %s\n"
	@printf \
	  "$(foreach c,$(sort $(SYSCONFIG_PATHS)),$(shell printf "\\t - $(c)\\\n"))"
	@printf "\tdefault install path for $(DEFAULT_HYPERVISOR) (CONFIG_PATH) : %s\n" $(abspath $(CONFIG_PATH))
	@printf "\tdefault alternate config path (SYSCONFIG) : %s\n" $(abspath $(SYSCONFIG))
ifneq (,$(findstring $(HYPERVISOR_QEMU),$(KNOWN_HYPERVISORS)))
	@printf "\t$(HYPERVISOR_QEMU) hypervisor path (QEMUPATH) : %s\n" $(abspath $(QEMUPATH))
endif
ifneq (,$(findstring $(HYPERVISOR_QEMU_VIRTIOFS),$(KNOWN_HYPERVISORS)))
	@printf "\t$(HYPERVISOR_QEMU_VIRTIOFS) hypervisor path (QEMUVIRTIOFSPATH) : %s\n" $(abspath $(QEMUVIRTIOFSPATH))
endif
ifneq (,$(findstring $(HYPERVISOR_CLH),$(KNOWN_HYPERVISORS)))
	@printf "\t$(HYPERVISOR_CLH) hypervisor path (CLHPATH) : %s\n" $(abspath $(CLHPATH))
endif
ifneq (,$(findstring $(HYPERVISOR_FC),$(KNOWN_HYPERVISORS)))
	@printf "\t$(HYPERVISOR_FC) hypervisor path (FCPATH) : %s\n" $(abspath $(FCPATH))
endif
ifneq (,$(findstring $(HYPERVISOR_ACRN),$(KNOWN_HYPERVISORS)))
	@printf "\t$(HYPERVISOR_ACRN) hypervisor path (ACRNPATH) : %s\n" $(abspath $(ACRNPATH))
endif
	@printf "\tassets path (PKGDATADIR) : %s\n" $(abspath $(PKGDATADIR))
	@printf "\tshim path (PKGLIBEXECDIR) : %s\n" $(abspath $(PKGLIBEXECDIR))
	@printf "\n"
##TARGET help: Show help comments that start with `##VAR` and `##TARGET` in runtime-rs makefile
help: Makefile show-summary
	@echo "========================== Help ============================="
	@echo "Variables:"
	@sed -n 's/^##VAR//p' $< | sort
	@echo ""
	@echo "Targets:"
	@sed -n 's/^##TARGET//p' $< | sort

TARPAULIN_ARGS:=-v --workspace
install-tarpaulin:
	cargo install cargo-tarpaulin

# Check if cargo tarpaulin is installed
HAS_TARPAULIN:= $(shell cargo --list | grep tarpaulin 2>/dev/null)
check_tarpaulin:
ifndef  HAS_TARPAULIN
	$(error "tarpaulin is not available please: run make install-tarpaulin ")
else
	$(info OK: tarpaulin installed)
endif

##TARGET codecov: Generate code coverage report
codecov: check_tarpaulin
	cargo tarpaulin $(TARPAULIN_ARGS)

##TARGET codecov-html: Generate code coverage html report
codecov-html: check_tarpaulin
	cargo tarpaulin $(TARPAULIN_ARGS) -o Html

install-runtime: runtime
	install -D $(TARGET_PATH) $(DESTDIR)$(BINDIR)/$(notdir $(TARGET_PATH))

install-configs: $(CONFIGS)
	$(foreach f,$(CONFIGS),$(call INSTALL_FILE,$f,$(dir $(CONFIG_PATH)))) \
	ln -sf $(DEFAULT_HYPERVISOR_CONFIG) $(DESTDIR)/$(CONFIG_PATH)

.PHONY: \
	help \
	optimize \
	show-header \
	show-summary \
	vendor
