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# Copyright (c) 2006, 2007 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your suggestions, praise, or complaints to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org/
# -----------------------------------------------------------------------------
# OSPlugin::Roster.pm
# - provides information about all available plugins
# -----------------------------------------------------------------------------
package OpenSLX::OSPlugin::Roster;
use strict;
use warnings;
use OpenSLX::Basics;
use Clone qw(clone);
my %plugins;
=item C<getAvailablePlugins()>
Returns a hash that keys the names of available plugins to their info hash.
=cut
sub getAvailablePlugins
{
my $class = shift;
$class->_init() if !%plugins;
my %pluginInfo;
foreach my $pluginName (keys %plugins) {
$pluginInfo{$pluginName} = $plugins{$pluginName}->getInfo();
}
return \%pluginInfo;
}
=item C<getPlugin()>
Returns an instance of the plugin with the given name
=cut
sub getPlugin
{
my $class = shift;
my $pluginName = shift;
$class->_init() if !%plugins;
my $plugin = $plugins{$pluginName};
return if !$plugin;
return clone($plugin);
}
=item C<getPluginAttrInfo()>
Returns a hash that contains info about the attributes support by the
given plugin
=cut
sub getPluginAttrInfo
{
my $class = shift;
my $pluginName = shift;
$class->_init() if !%plugins;
return if !$plugins{$pluginName};
return $plugins{$pluginName}->getAttrInfo();
}
=item C<addAllAttributesToHash()>
Fetches attribute info from all available plugins and adds it to the given
hash-ref.
If a plugin name has been given, only the attributes of that plugin will be
added.
=over
=item Return Value
1
=back
=cut
sub addAllAttributesToHash
{
my $class = shift;
my $attrInfo = shift;
my $pluginName = shift;
return $class->_addAttributesToHash($attrInfo, $pluginName, sub { 1 } );
}
=item C<addAllStage1AttributesToHash()>
Fetches attribute info relevant for stage1 (i.e. vendor-OS-attributes)
from all available plugins and adds it to the given hash-ref.
If a plugin name has been given, only the attributes of that plugin will be
added.
=over
=item Return Value
1
=back
=cut
sub addAllStage1AttributesToHash
{
my $class = shift;
my $attrInfo = shift;
my $pluginName = shift;
return $class->_addAttributesToHash($attrInfo, $pluginName, sub {
my $attr = shift;
return $attr->{applies_to_vendor_os};
} );
}
=item C<addAllStage3AttributesToHash()>
Fetches attribute info relevant for stage3 (i.e. system- or client-attributes)
from all available plugins and adds it to the given hash-ref.
If a plugin name has been given, only the attributes of that plugin will be
added.
=over
=item Return Value
1
=back
=cut
sub addAllStage3AttributesToHash
{
my $class = shift;
my $attrInfo = shift;
my $pluginName = shift;
return $class->_addAttributesToHash($attrInfo, $pluginName, sub {
my $attr = shift;
return $attr->{applies_to_systems} || $attr->{applies_to_clients};
} );
}
sub _addAttributesToHash
{
my $class = shift;
my $attrInfo = shift;
my $pluginName = shift;
my $testFunc = shift;
$class->_init() if !%plugins;
foreach my $plugin (values %plugins) {
next if $pluginName && $plugin->{name} ne $pluginName;
my $pluginAttrInfo = $plugin->getAttrInfo();
foreach my $attr (keys %$pluginAttrInfo) {
next if !$testFunc->($pluginAttrInfo->{$attr});
$attrInfo->{$attr} = clone($pluginAttrInfo->{$attr});
}
}
return 1;
}
sub _init
{
my $class = shift;
%plugins = ();
my $pluginPath = "$openslxConfig{'base-path'}/lib/plugins";
foreach my $modulePath (glob("$pluginPath/*")) {
next if $modulePath !~ m{/([^/]+)$};
my $pluginName = $1;
if (!-e "$modulePath/OpenSLX/OSPlugin/$pluginName.pm") {
vlog(
1,
"skipped plugin-folder $modulePath as no corresponding perl "
. "module could be found."
);
next;
}
my $class = "OpenSLX::OSPlugin::$pluginName";
vlog(2, "loading plugin $class from path '$modulePath'");
my $plugin = instantiateClass($class, { pathToClass => $modulePath });
$plugins{$pluginName} = $plugin;
}
return;
}
1;
|
