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lib/NRun/Workers/WorkerLocal.pm  view on Meta::CPAN

# Timo Benk : 2013-05-23 17:26:57 +0200 : comment fixed for delete()
# Timo Benk : 2013-05-24 08:03:19 +0200 : generic mode added
# Timo Benk : 2013-06-13 13:59:01 +0200 : process output handling refined
# Timo Benk : 2013-06-13 20:32:17 +0200 : using __PACKAGE__ is less error-prone
# Timo Benk : 2013-06-14 12:53:08 +0200 : $_self->{O|E} must be used instead of STD{OUT|ERR}
# Timo Benk : 2013-06-21 09:44:13 +0200 : reverse copy support added
#

###
# this worker executes the given script locally and sets the environment
# variable TARGET_HOST on each execution
###

package NRun::Worker::WorkerLocal;

use strict;
use warnings;

use File::Basename;

use NRun::Worker;

our @ISA = qw(NRun::Worker);

BEGIN {

    NRun::Worker::register ( {

        'MODE' => "local",
        'DESC' => "execute the script locally, set TARGET_HOST on each execution",
        'NAME'   => __PACKAGE__,
    } );
}

###
# create a new object.
#
# <- the new object
sub new {

    my $_pkg = shift;

    my $self = {};
    bless $self, $_pkg;

    return $self;
}

# initialize this worker module.
#
# $_cfg - parameter hash where
# {
#   'hostname'   - hostname this worker should act on
#   'local_exec' - commandline for the exec command (COMMAND, ARGUMENTS, HOSTNAME will be replaced)
# }
sub init {

    my $_self = shift;
    my $_cfg  = shift;

    $_self->SUPER::init($_cfg);

    $_self->{local_exec}   = $_cfg->{local_exec};
}

###
# copy a file from $_self->{hostname}.
#
# $_source - source file to be copied
# $_target - destination $_source should be copied to
# <- the return code
sub rcopy {

    my $_self   = shift;
    my $_source = shift;
    my $_target = shift;

    print {$_self->{E}} "$_self->{hostname};stderr;" . time() . ";$$;n/a;error;\"not implemented\"\n";

    return 1;
}

###
# copy a file to $_self->{hostname}.
#
# $_source - source file to be copied
# $_target - destination $_source should be copied to
# <- the return code
sub copy {

    my $_self   = shift;
    my $_source = shift;
    my $_target = shift;

    print {$_self->{E}} "$_self->{hostname};stderr;" . time() . ";$$;n/a;error;\"not implemented\"\n";

    return 1;
}

###
# execute the command locally and set environment variable TARGET_HOST
# to $_self->{hostname}.
#
# $_command - the command that should be executed
# $_args    - arguments that should be supplied to $_command
# <- the return code
sub execute {

    my $_self    = shift;
    my $_command = shift;
    my $_args    = shift;

    my $cmdline = $_self->{local_exec};

    $cmdline =~ s/COMMAND/$_command/g;
    $cmdline =~ s/ARGUMENTS/$_args/g;
    $cmdline =~ s/HOSTNAME/$_self->{hostname}/g;

    return $_self->do($cmdline);
}