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{ config, lib, pkgs, ... }:
let
cfg = config.services.emile.r2wars-web;
in with lib; {
options.services.emile.r2wars-web = {
enable = mkEnableOption "Enable r2wars-web";
# ip and port to listen on
guest = mkOption {
type = types.str;
default = "vmnameone";
example = "vmnameone";
description = "The name of the vm";
};
};
config = mkIf cfg.enable {
systemd.services = lib.mapAttrs' (name: guest: lib.nameValuePair "libvirtd-guest-${name}" {
after = [ "libvirtd.service" ];
requires = [ "libvirtd.service" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
Type = "oneshot";
RemainAfterExit = "yes";
};
script =
let
xml = pkgs.writeText "libvirt-guest-${name}.xml"
''
<domain type="kvm">
<name>${name}</name>
<uuid>UUID</uuid>
<os>
<type>hvm</type>
</os>
<memory unit="GiB">${guest.memory}</memory>
<devices>
<disk type="volume">
<source volume="guest-${name}"/>
<target dev="vda" bus="virtio"/>
</disk>
<graphics type="spice" autoport="yes"/>
<input type="keyboard" bus="usb"/>
<interface type="direct">
<source dev="${hostNic}" mode="bridge"/>
<mac address="${guest.mac}"/>
<model type="virtio"/>
</interface>
</devices>
<features>
<acpi/>
</features>
</domain>
'';
in
''
uuid="$(${pkgs.libvirt}/bin/virsh domuuid '${name}' || true)"
${pkgs.libvirt}/bin/virsh define <(sed "s/UUID/$uuid/" '${xml}')
${pkgs.libvirt}/bin/virsh start '${name}'
'';
preStop =
''
${pkgs.libvirt}/bin/virsh shutdown '${name}'
let "timeout = $(date +%s) + 10"
while [ "$(${pkgs.libvirt}/bin/virsh list --name | grep --count '^${name}$')" -gt 0 ]; do
if [ "$(date +%s)" -ge "$timeout" ]; then
# Meh, we warned it...
${pkgs.libvirt}/bin/virsh destroy '${name}'
else
# The machine is still running, let's give it some time to shut down
sleep 0.5
fi
done
'';
}) guests;
};
}
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