use Modern::Perl;
-use Module::Load::Conditional qw(can_load);
-use Module::Pluggable search_path => ['Koha::Plugin'], except => qr/::Edifact(|::Line|::Message|::Order|::Segment|::Transport)$/;
+use Array::Utils qw( array_minus );
+use Class::Inspector;
use List::MoreUtils qw( any );
+use Module::Load::Conditional qw( can_load );
+use Module::Load;
+use Module::Pluggable search_path => ['Koha::Plugin'], except => qr/::Edifact(|::Line|::Message|::Order|::Segment|::Transport)$/;
+use Try::Tiny;
use C4::Context;
use C4::Output;
+use Koha::Cache::Memory::Lite;
+use Koha::Exceptions::Plugin;
+use Koha::Plugins::Methods;
+
+use constant ENABLED_PLUGINS_CACHE_KEY => 'enabled_plugins';
+
BEGIN {
my $pluginsdir = C4::Context->config("pluginsdir");
my @pluginsdir = ref($pluginsdir) eq 'ARRAY' ? @$pluginsdir : $pluginsdir;
- push( @INC, @pluginsdir );
+ push @INC, array_minus(@pluginsdir, @INC) ;
pop @INC if $INC[-1] eq '.';
}
Koha::Plugins - Module for loading and managing plugins.
+=head2 new
+
+Constructor
+
=cut
sub new {
return bless( $args, $class );
}
+=head2 call
+
+Calls a plugin method for all enabled plugins
+
+ @responses = Koha::Plugins->call($method, @args)
+
+Note: Pass your arguments as refs, when you want subsequent plugins to use the value
+updated by preceding plugins, provided that these plugins support that.
+
+=cut
+
+sub call {
+ my ($class, $method, @args) = @_;
+
+ return unless C4::Context->config('enable_plugins');
+
+ my @responses;
+ my @plugins = $class->get_enabled_plugins();
+ @plugins = grep { $_->can($method) } @plugins;
+
+ # TODO: Remove warn when after_hold_create is removed from the codebase
+ warn "after_hold_create is deprecated and will be removed soon. Contact the following plugin's authors: " . join( ', ', map {$_->{metadata}->{name}} @plugins)
+ if $method eq 'after_hold_create' and @plugins;
+
+ foreach my $plugin (@plugins) {
+ my $response = eval { $plugin->$method(@args) };
+ if ($@) {
+ warn sprintf("Plugin error (%s): %s", $plugin->get_metadata->{name}, $@);
+ next;
+ }
+
+ push @responses, $response;
+ }
+
+ return @responses;
+}
+
+=head2 get_enabled_plugins
+
+Returns a list of enabled plugins.
+
+ @plugins = Koha::Plugins->get_enabled_plugins();
+
+=cut
+
+sub get_enabled_plugins {
+ my ($class) = @_;
+
+ return unless C4::Context->config('enable_plugins');
+
+ my $enabled_plugins = Koha::Cache::Memory::Lite->get_from_cache(ENABLED_PLUGINS_CACHE_KEY);
+ unless ($enabled_plugins) {
+ $enabled_plugins = [];
+ my $rs = Koha::Database->schema->resultset('PluginData');
+ $rs = $rs->search({ plugin_key => '__ENABLED__', plugin_value => 1 });
+ my @plugin_classes = $rs->get_column('plugin_class')->all();
+ foreach my $plugin_class (@plugin_classes) {
+ unless (can_load(modules => { $plugin_class => undef }, nocache => 1)) {
+ warn "Failed to load $plugin_class: $Module::Load::Conditional::ERROR";
+ next;
+ }
+
+ my $plugin = eval { $plugin_class->new() };
+ if ($@ || !$plugin) {
+ warn "Failed to instantiate plugin $plugin_class: $@";
+ next;
+ }
+
+ push @$enabled_plugins, $plugin;
+ }
+ Koha::Cache::Memory::Lite->set_in_cache(ENABLED_PLUGINS_CACHE_KEY, $enabled_plugins);
+ }
+
+ return @$enabled_plugins;
+}
+
=head2 GetPlugins
This will return a list of all available plugins, optionally limited by
method or metadata value.
- my @plugins = C4::Plugins::GetPlugins({
+ my @plugins = Koha::Plugins::GetPlugins({
method => 'some_method',
metadata => { some_key => 'some_value' },
});
The method and metadata parameters are optional.
-Available methods currently are: 'report', 'tool', 'to_marc', 'edifact'.
If you pass multiple keys in the metadata hash, all keys must match.
=cut
sub GetPlugins {
my ( $self, $params ) = @_;
- my $method = $params->{method};
+
+ my $method = $params->{method};
my $req_metadata = $params->{metadata} // {};
- my @plugin_classes = $self->plugins();
+ my $filter = ( $method ) ? { plugin_method => $method } : undef;
+
+ my $plugin_classes = Koha::Plugins::Methods->search(
+ $filter,
+ { columns => 'plugin_class',
+ distinct => 1
+ }
+ )->_resultset->get_column('plugin_class');
+
my @plugins;
- foreach my $plugin_class (@plugin_classes) {
- if ( can_load( modules => { $plugin_class => undef } ) ) {
- next unless $plugin_class->isa('Koha::Plugins::Base');
+ # Loop through all plugins that implement at least a method
+ while ( my $plugin_class = $plugin_classes->next ) {
+
+ if ( can_load( modules => { $plugin_class => undef }, nocache => 1 ) ) {
- my $plugin = $plugin_class->new({ enable_plugins => $self->{'enable_plugins'} });
+ my $plugin;
+ my $failed_instantiation;
- # Limit results by method or metadata
- next if $method && !$plugin->can($method);
+ try {
+ $plugin = $plugin_class->new({
+ enable_plugins => $self->{'enable_plugins'}
+ # loads even if plugins are disabled
+ # FIXME: is this for testing without bothering to mock config?
+ });
+ }
+ catch {
+ warn "$_";
+ $failed_instantiation = 1;
+ };
+
+ next if $failed_instantiation;
+
+ next unless $plugin->is_enabled or
+ defined($params->{all}) && $params->{all};
+
+ # filter the plugin out by metadata
my $plugin_metadata = $plugin->get_metadata;
- next if $plugin_metadata
+ next
+ if $plugin_metadata
and %$req_metadata
and any { !$plugin_metadata->{$_} || $plugin_metadata->{$_} ne $req_metadata->{$_} } keys %$req_metadata;
+
+ push @plugins, $plugin;
+ } elsif ( defined($params->{errors}) && $params->{errors} ){
+ push @plugins, { error => 'cannot_load', name => $plugin_class };
+ }
+
+ }
+
+ return @plugins;
+}
+
+=head2 InstallPlugins
+
+Koha::Plugins::InstallPlugins()
+
+This method iterates through all plugins physically present on a system.
+For each plugin module found, it will test that the plugin can be loaded,
+and if it can, will store its available methods in the plugin_methods table.
+
+NOTE: We reload all plugins here as a protective measure in case someone
+has removed a plugin directly from the system without using the UI
+
+=cut
+
+sub InstallPlugins {
+ my ( $self, $params ) = @_;
+
+ my @plugin_classes = $self->plugins();
+ my @plugins;
+
+ foreach my $plugin_class (@plugin_classes) {
+ if ( can_load( modules => { $plugin_class => undef }, nocache => 1 ) ) {
+ next unless $plugin_class->isa('Koha::Plugins::Base');
+
+ my $plugin;
+ my $failed_instantiation;
+
+ try {
+ $plugin = $plugin_class->new({ enable_plugins => $self->{'enable_plugins'} });
+ }
+ catch {
+ warn "$_";
+ $failed_instantiation = 1;
+ };
+
+ next if $failed_instantiation;
+
+ Koha::Plugins::Methods->search({ plugin_class => $plugin_class })->delete();
+
+ foreach my $method ( @{ Class::Inspector->methods( $plugin_class, 'public' ) } ) {
+ Koha::Plugins::Method->new(
+ {
+ plugin_class => $plugin_class,
+ plugin_method => $method,
+ }
+ )->store();
+ }
+
push @plugins, $plugin;
+ } else {
+ my $error = $Module::Load::Conditional::ERROR;
+ # Do not warn the error if the plugin has been uninstalled
+ warn $error unless $error =~ m|^Could not find or check module '$plugin_class'|;
}
}
+
+ Koha::Cache::Memory::Lite->clear_from_cache(ENABLED_PLUGINS_CACHE_KEY);
+
return @plugins;
}
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