Koha/REST/Plugin/PluginRoutes.pm

   1 package Koha::REST::Plugin::PluginRoutes;
   2
   3 # This file is part of Koha.
   4 #
   5 # Koha is free software; you can redistribute it and/or modify it
   6 # under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # Koha is distributed in the hope that it will be useful, but
  11 # WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  17
  18 use Modern::Perl;
  19
  20 use Mojo::Base 'Mojolicious::Plugin';
  21
  22 use Koha::Exceptions::Plugin;
  23 use Koha::Plugins;
  24
  25 use Clone qw(clone);
  26 use Try::Tiny;
  27
  28 =head1 NAME
  29
  30 Koha::REST::Plugin::PluginRoutes
  31
  32 =head1 API
  33
  34 =head2 Helper methods
  35
  36 =head3 register
  37
  38 =cut
  39
  40 sub register {
  41     my ( $self, $app, $config ) = @_;
  42
  43     my $spec      = $config->{spec};
  44     my $validator = $config->{validator};
  45
  46     my @plugins;
  47
  48     if ( C4::Context->config("enable_plugins") and
  49          ! C4::Context->needs_install ) # Koha is installed
  50     {
  51         # plugin needs to define a namespace
  52         @plugins = Koha::Plugins->new()->GetPlugins(
  53             {
  54                 method => 'api_namespace',
  55             }
  56         );
  57
  58         foreach my $plugin ( @plugins ) {
  59             $spec = inject_routes( $spec, $plugin, $validator );
  60         }
  61
  62     }
  63
  64     return $spec;
  65 }
  66
  67 =head3 inject_routes
  68
  69 =cut
  70
  71 sub inject_routes {
  72     my ( $spec, $plugin, $validator ) = @_;
  73
  74     return merge_spec( $spec, $plugin ) unless $validator;
  75
  76     return try {
  77
  78         my $backup_spec = merge_spec( clone($spec), $plugin );
  79         if ( spec_ok( $backup_spec, $validator ) ) {
  80             $spec = merge_spec( $spec, $plugin );
  81         }
  82         else {
  83             Koha::Exceptions::Plugin->throw(
  84                 "The resulting spec is invalid. Skipping " . $plugin->get_metadata->{name}
  85             );
  86         }
  87
  88         return $spec;
  89     }
  90     catch {
  91         warn "$_";
  92         return $spec;
  93     };
  94 }
  95
  96 =head3 merge_spec
  97
  98 =cut
  99
 100 sub merge_spec {
 101     my ( $spec, $plugin ) = @_;
 102
 103     if($plugin->can('api_routes')) {
 104         my $plugin_spec = $plugin->api_routes;
 105
 106         foreach my $route ( keys %{ $plugin_spec } ) {
 107             my $THE_route = '/contrib/' . $plugin->api_namespace . $route;
 108             if ( exists $spec->{ $THE_route } ) {
 109                 # Route exists, overwriting is forbidden
 110                 Koha::Exceptions::Plugin::ForbiddenAction->throw(
 111                     "Attempted to overwrite $THE_route"
 112                 );
 113             }
 114
 115             $spec->{'paths'}->{ $THE_route } = $plugin_spec->{ $route };
 116         }
 117     }
 118
 119     if($plugin->can('static_routes')) {
 120         my $plugin_spec = $plugin->static_routes;
 121
 122         foreach my $route ( keys %{ $plugin_spec } ) {
 123
 124             my $THE_route = '/contrib/' . $plugin->api_namespace . '/static'.$route;
 125             if ( exists $spec->{ $THE_route } ) {
 126                 # Route exists, overwriting is forbidden
 127                 Koha::Exceptions::Plugin::ForbiddenAction->throw(
 128                     "Attempted to overwrite $THE_route"
 129                 );
 130             }
 131
 132             $spec->{'paths'}->{ $THE_route } = $plugin_spec->{ $route };
 133         }
 134     }
 135     return $spec;
 136 }
 137
 138 =head3 spec_ok
 139
 140 =cut
 141
 142 sub spec_ok {
 143     my ( $spec, $validator ) = @_;
 144
 145     return try {
 146         $validator->load_and_validate_schema(
 147             $spec,
 148             {
 149                 allow_invalid_ref => 1,
 150             }
 151         );
 152         return 1;
 153     }
 154     catch {
 155         return 0;
 156     }
 157 }
 158
 159 1;