do-unikraft-nginx

#!/bin/bash

top=unikraft-nginx
libs=unikraft-nginx/libs
apps=unikraft-nginx/libs
uk=unikraft-nginx/unikraft
app=unikraft-nginx/apps/app-nginx

setup()
{
    mkdir -p "$top"
    mkdir -p "$libs"
    mkdir -p "$apps"

    git clone https://github.com/unikraft/unikraft "$uk"

    git clone https://github.com/unikraft/app-nginx "$app"
    git clone https://github.com/unikraft/lib-nginx "$libs"/nginx
    git clone https://github.com/unikraft/lib-newlib "$libs"/newlib
    git clone https://github.com/unikraft/lib-pthread-embedded "$libs"/pthread-embedded
    git clone https://github.com/unikraft/lib-lwip "$libs"/lwip

    pushd "$libs"/nginx > /dev/null
    git remote add upb https://github.com/unikraft-upb/lib-nginx
    git fetch upb
    git checkout -b add-posix-lib-dependency upb/add-posix-lib-dependency
    popd > /dev/null
}

build()
{
    pushd "$app" > /dev/null
    export UK_WORKDIR=$(pwd)/../../
    kraft configure -F -m x86_64 -p kvm
    kraft build -j $(nproc)
    popd > /dev/null
}

clean()
{
    pushd "$app" > /dev/null
    export UK_WORKDIR=$(pwd)/../../
    kraft clean -d
    popd > /dev/null
}

remove()
{
    rm -fr "$top"
}

_setup_networking()
{
    sudo ip link set dev virbr0 down
    sudo ip link del dev virbr0
    sudo ip link add virbr0 type bridge
    sudo ip address add 172.44.0.1/24 dev virbr0
    sudo ip link set dev virbr0 up
}

run()
{
    _setup_networking
    pushd "$app" > /dev/null
    export UK_WORKDIR=$(pwd)/../../
    kraft run -M 512 -b virbr0 "netdev.ipv4_addr=172.44.0.2 netdev.ipv4_gw_addr=172.44.0.1 netdev.ipv4_subnet_mask=255.255.255.0 --"
    popd > /dev/null
}

run_qemu()
{
    _setup_networking
    pushd "$app" > /dev/null
    sudo qemu-system-x86_64 -fsdev local,id=myid,path=$(pwd)/fs0,security_model=none \
                            -device virtio-9p-pci,fsdev=myid,mount_tag=fs0,disable-modern=on,disable-legacy=off \
                            -netdev bridge,id=en0,br=virbr0 \
                            -device virtio-net-pci,netdev=en0 \
                            -kernel "build/nginx_kvm-x86_64" \
                            -append "netdev.ipv4_addr=172.44.0.2 netdev.ipv4_gw_addr=172.44.0.1 netdev.ipv4_subnet_mask=255.255.255.0 --" \
                            -cpu host \
                            -enable-kvm \
                            -nographic
    popd > /dev/null
}

if test $# -ne 1; then
    echo "Usage: $0 <command>" 1>&2
    echo "  command: setup build clean run run_qemu remove" 1>&2
    exit 1
fi

command="$1"

case "$command" in

    "setup")
        setup
        ;;

    "build")
        build
        ;;

    "clean")
        clean
        ;;

    "run")
        run
        ;;

    "run_qemu")
        run_qemu
        ;;

    "remove")
        remove
        ;;

    *)
        echo "Unknown command"
        exit 1
esac