pbot/applets/compiler_vm/host/bin/vm-client

#!/usr/bin/env perl

# File: vm-client
#
# Purpose: Interfaces with the PBot virtual machine server hosted at
# PeerAddr/PeerPort defined below. This allows us to host instances of
# virtual machines on remote servers.
#
# This script is intended to be installed to PBot's applets directory
# and attached to a PBot command such as `cc`.

# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
# SPDX-License-Identifier: MIT

# TODO: extend to take a list of server/ports to cycle for load-balancing

use warnings;
use strict;

use IO::Socket;
use JSON::XS;

use constant {
    SERVER_PORT => $ENV{PBOTVM_SERVER} // 9000,
};

my $sock = IO::Socket::INET->new(
    PeerAddr => '127.0.0.1',
    PeerPort => SERVER_PORT,
    Proto    => 'tcp'
);

if (not defined $sock) {
    print "Fatal error compiling: $!; try again later\n";
    die $!;
}

my $json = join ' ', @ARGV;
my $h    = decode_json $json;

my $lang = $h->{lang} // "c11";

if ($h->{code} =~ s/-lang=([^ ]+)//) { $lang = lc $1; }

$h->{lang} = $lang;
$json = encode_json $h;

print $sock "$json\n";

while (my $line = <$sock>) { print "$line"; }

close $sock;