#!/usr/bin/env perl

use 5.008;
use strict;
use warnings;

use Helios::Job;
use Helios::Config;

our $VERSION = '2.80';

# CHANGES:
# 2012-01-22: Minor changes to comments.
# [LH] 2013-08-04: Changed service instantiation to use new Helios::Config API.
# [LH] [2013-10-28]: Updated to use Helios::Config and new Helios::Job API.  
# Replaced all try {} with eval {}.  Added --verbose option to return jobid.
# [LH] [2013-11-01]: changed cmd line arg parsing so -v and -n work as well as
# --verbose and --no-validate
# [LH] [2013-11-24]: Added new --verbose and jobtype documentation to POD.  
# Removed old code already commented out.
# [LH] [2014-02-28]: Changed shebang line to use env instead of /usr/bin/perl.

=head1 NAME

helios_job_submit.pl - Submit a job to the Helios job processing system from the cmd line

=head1 SYNOPSIS

 helios_job_submit.pl [--verbose] [--no-validate] I<jobclass> [I<jobargs>]

 helios_job_submit.pl MyService "<job>params><myarg1>myvalue1</myarg1></params></job>"

 helios_job_submit.pl --help

=head1 DESCRIPTION

Use helios_job_submit.pl to submit a job to the Helios job processing system 
from the command line or a shell script.  In the simplest form, 2 options are 
required.  The first parameter is the jobtype (usually the name of your 
service), and the second is the XML string representing the job's arguments.  
If the second parameter is not given, helios_job_submit.pl will read the job
argument string from STDIN.  If the job submission is successful, the command 
will exit with an exitstatus of 0.  If unsuccessful, the command will exit 
with a non-zero status and will print the error to STDERR.

In addition to the normal command options, there are 2 optional parameters 
that can be specified.  These must be specified I<before> the jobtype and 
argument string:

=over 4

=item --verbose

If --verbose is specified, the jobid of the new job is returned via STDOUT.  
Without --verbose, the jobid is not returned; this is a backward compatibility 
measure because Helios pre-2.80 did not return a jobid.

=item --no-validate

By default, Helios job argument strings are specified with an XML-like syntax.  
The helios_job_submit.pl command attempts to insure your job argument string 
is well-formed XML by default, but this can slow down the job submission 
process.  Specifying the --no-validate option will turn off the validation step 
and will speed up the submission process.  Keep in mind your job argument 
XML will not be validated before submission.

=back

=cut

our $DEBUG_MODE = 0;
if (defined($ENV{HELIOS_DEBUG}) && $ENV{HELIOS_DEBUG} == 1) {
	$DEBUG_MODE = 1;
}

our $VALIDATE = 1;
# BEGIN CODE Copyright (C) 2013 by Logical Helion, LLC.
# [LH] [2013-10-28]: Added --verbose option.
our $OPT_VERBOSE = 0;
our @OPTS = @ARGV;
foreach (@OPTS) {
	last if !/^-/;
# END CODE Copyright (C) 2013 by Logical Helion, LLC.
	if ( lc($_) eq '--no-validate' || lc($_) eq '-n') {
		shift @ARGV;
		$VALIDATE = 0;
	}
	if ( lc($_) eq '--verbose' || lc($_ eq '-v')) {
		shift @ARGV;
		$OPT_VERBOSE = 1;
	}	
}

our $JOB_CLASS = shift @ARGV;
our $PARAMS = shift @ARGV;

our $DATABASES_INFO;
our $VERBOSE = 0;

# print help if asked
if ( !defined($JOB_CLASS) || ($JOB_CLASS eq '--help') || ($JOB_CLASS eq '-h') ) {
	require Pod::Usage;
	Pod::Usage::pod2usage(-verbose => 2, -exitstatus => 0);
}

# BEGIN CODE Copyright (C) 2013 by Logical Helion, LLC.
my $config = Helios::Config->parseConfig();
# END CODE Copyright (C) 2013 by Logical Helion, LLC.

# if we were passed a <params> wodge of XML on the command line, 
# try to validate it
# if we DIDN'T get a <params> wodge, 
# then we have to assume it's coming from STDIN.  
# which probably means it's a metajob
if ( !defined($PARAMS) ) {
	# read them in from STDIN
	while (<>) {
		chomp;
		$PARAMS .= $_;
	}
}
# test the args before we submit
if ($VALIDATE) { validateParamsXML($PARAMS) or exit(1); }

my $j = Helios::Job->new();
$j->setConfig($config);
$j->setJobType($JOB_CLASS);
$j->setArgString($PARAMS);
my $jobid = $j->submit();

if ($DEBUG_MODE) {
	print "Job submit successful.  JOBID: ",$jobid,"\n";
}

# BEGIN CODE Copyright (C) 2013 by Logical Helion, LLC.
if ($OPT_VERBOSE && !$DEBUG_MODE) {
	print "Jobid: $jobid\n";
}
# END CODE Copyright (C) 2013 by Logical Helion, LLC.


=head1 SUBROUTINES

=head2 validateParamsXML($xml)

Given a wodge of parameter XML (wrapped by <job><params></params></job> tags), 
validateParamsXML returns a true value if the XML is valid, and a false value 
if it isn't.

=cut

sub validateParamsXML {
	my $arg = shift;
	
	# [LH] [2013-10-28]: Replaced all try {} with eval {}	
	my $valid = 0;
	eval {
		$arg = Helios::Job->parseArgXML($arg);
		$valid = 1;
		1;
	} or do {
		my $E = $@;
		warn("Invalid job arguments: $arg (", $E->text(),")\n");
	};

}


=head1 SEE ALSO

L<Helios>, L<Helios::Job>

=head1 AUTHOR

Andrew Johnson, E<lt>lajandy at cpan dotorgE<gt>

=head1 COPYRIGHT AND LICENSE

Copyright (C) 2008-9 by CEB Toolbox, Inc.

Portions of this software, where noted, are Copyright (C) 2013 by
Logical Helion, LLC.

This program is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.0 or,
at your option, any later version of Perl 5 you may have available.

=head1 WARRANTY

This software comes with no warranty of any kind.

=cut