perlbal

#!/usr/bin/perl -w
#

=head1 NAME

Perlbal - Reverse-proxy load balancer and webserver

=head1 DESCRIPTION

For now, see example configuration files in conf/ from the CPAN tarball

http://search.cpan.org/dist/Perlbal/

=head1 AUTHORS

 Brad Fitzpatrick, <brad@danga.com>
 Mark Smith, <marksmith@danga.com>

=head1 SEE ALSO

 http://www.danga.com/perlbal/

=head1 COPYRIGHT AND LICENSE

Copyright 2004, Danga Interactive, Inc.
Copyright 2005-2007, Six Apart, Ltd.

You can use and redistribute Perlbal under the same terms as Perl itself.

=cut


use strict;
use warnings;
use lib 'lib';
use Perlbal;

my $opt_daemonize;
my $opt_config;
my $opt_help;
my $opt_version;
usage(1) unless
    Getopt::Long::GetOptions(
                             'daemon'   => \$opt_daemonize,
                             'config=s' => \$opt_config,
                             'help'     => \$opt_help,
                             'version'  => \$opt_version,
               );

my $default_config = "/etc/perlbal/perlbal.conf";
$opt_config = $default_config if ! $opt_config && -e $default_config;

usage(0) if $opt_help;

sub usage {
    my $rv = shift;
    print STDERR <<USAGE;
Usage: perlbal [OPTS]
  --help           This usage info
  --version        Print perlbal release version
  --config=[file]  Specify Perlbal config file
                   (default: /etc/perlbal/perlbal.conf)
  --daemon         Daemonize
USAGE

    exit($rv);
}

if ($opt_version) {
    print STDOUT "Perlbal version $Perlbal::VERSION\n";
    exit 0;
}

# load user config
if ($opt_config && ! Perlbal::load_config($opt_config, sub { print STDOUT "$_[0]\n"; })) {
    die "Error starting up.\n";
}

# FIXME: warn harder if web_server services are enabled
if ($Perlbal::AIO_MODE eq "none") {
    print STDERR "WARNING:  AIO mode disabled or not available.  \n".
                 "          Perlbal will run slowly under load if you're doing any\n".
                 "          disk operations. (e.g. web_server mode).\n".
                 "          Install IO::AIO for better performance.\n";
}

unless (Perlbal::Socket->WatchedSockets() > 0) {
    die "No services or management port configured.  Nothing to do.  Stopping.\n";
}

if ($opt_daemonize) {
    Perlbal::daemonize();
} else {
    print "Running.\n";
}

exit 0 if Perlbal::run();
exit 1;

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