/usr/share/perl5/App/ClusterSSH/Cluster.pm is in clusterssh 4.01.01-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 | package App::ClusterSSH::Cluster;
use strict;
use warnings;
use version;
our $VERSION = version->new('0.01');
use Carp;
use Try::Tiny;
use base qw/ App::ClusterSSH::Base /;
our $master_object_ref;
sub new {
my ( $class, %args ) = @_;
if ( !$master_object_ref ) {
$master_object_ref = $class->SUPER::new(%args);
}
return $master_object_ref;
}
sub get_clusters {
my ( $self, @files ) = @_;
for my $file ( '/etc/clusters', @files ) {
$self->debug(3, 'Loading in config from: ', $file);
$self->read_cluster_file($file);
}
return $self;
}
sub read_cluster_file {
my ( $self, $filename ) = @_;
$self->debug( 2, 'Reading clusters from file ', $filename );
if ( -f $filename ) {
open( my $fh, '<', $filename )
|| croak(
App::ClusterSSH::Exception::Cluster->throw(
error => $self->loc(
'Unable to read file [_1]: [_2]',
$filename, $!
)
)
);
my $line;
while ( defined( $line = <$fh> ) ) {
next
if ( $line =~ /^\s*$/ || $line =~ /^#/ )
; # ignore blank lines & commented lines
chomp $line;
if ( $line =~ s/\\\s*$// ) {
$line .= <$fh>;
redo unless eof($fh);
}
my @line = split( /\s+/, $line );
#s/^([\w-]+)\s*//; # remote first word and stick into $1
$self->debug( 3, "read line: $line" );
$self->register_tag(@line);
}
close($fh);
}
else {
$self->debug( 2, 'No file found to read');
}
return $self;
}
sub register_tag {
my ( $self, $tag, @nodes ) = @_;
$self->debug( 2, "Registering tag $tag: ", join( ' ', @nodes ) );
$self->{$tag} = \@nodes;
return $self;
}
sub get_tag {
my ( $self, $tag ) = @_;
if ( $self->{$tag} ) {
$self->debug( 2, "Retrieving tag $tag: ",
join( ' ', $self->{$tag} ) );
return @{ $self->{$tag} };
}
$self->debug( 2, "Tag $tag is not registered" );
return;
}
sub list_tags {
my ($self) = @_;
return keys(%$self);
}
#use overload (
# q{""} => sub {
# my ($self) = @_;
# return $self->{hostname};
# },
# fallback => 1,
#);
1;
=pod
=head1 NAME
App::ClusterSSH::Cluster - Object representing cluster configuration
=head1 SYNOPSIS
=head1 DESCRIPTION
Object representing application configuration
=head1 METHODS
=over 4
=item $cluster=ClusterSSH::Cluster->new();
Create a new object. Object should be common across all invocations.
=item $cluster->get_clusters($filename);
Read in /etc/clusters and any other given file name and register the tags found.
=item $cluster->read_cluster_file($filename);
Read in the given cluster file and register the tags found
=item $cluster->register_tag($tag,@hosts);
Register the given tag name with the given host names.
=item @entries = $cluster->get_tag('tag');
Retrieve all entries for the given tag
=item @tags = $cluster->list_tags();
Return an array of all available tag names
=back
=head1 AUTHOR
Duncan Ferguson, C<< <duncan_j_ferguson at yahoo.co.uk> >>
=head1 LICENSE AND COPYRIGHT
Copyright 1999-2010 Duncan Ferguson.
This program is free software; you can redistribute it and/or modify it
under the terms of either: the GNU General Public License as published
by the Free Software Foundation; or the Artistic License.
See http://dev.perl.org/licenses/ for more information.
=cut
1;
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