Lemonldap::NG::Common::PSGI - Base library for PSGI modules of Lemonldap::NG. Use

       LemonLDAP::NG team <http://lemonldap-ng.org/team>

       Use       OW2       system       to       report       bug       or       ask        for        features:
       <https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/issues>

       See COPYING file for details.

       This  library  is  free  software;  you  can  redistribute it and/or modify it under the terms of the GNU
       General Public License as published by the Free Software  Foundation;  either  version  2,  or  (at  your
       option) any later version.

       This  program  is  distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
       the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General  Public
       License for more details.

       You  should  have received a copy of the GNU General Public License along with this program.  If not, see
       <http://www.gnu.org/licenses/>.

perl v5.40.1                                       2025-05-01                   Lemonldap::NG::Common::PSGI(3pm)

       This package provides base class for Lemonldap::NG web interfaces but could be used regardless.

       Lemonldap::NG is available at <https://lemonldap-ng.org/download>

Runningmethodsrun($args)

       Main method that will manage requests. It can be called using class or already created object:

       Class->run($args):
           launch new($args), init(), then manage requests (using private _run() method

       $object->run():
           manage directly requests. Initialization must have be done earlier.

   LogginglmLog($msg,$level)

       Print on STDERR messages if level > $self->{logLevel}. Defined log levels are: debug, info, notice, warn,
       error.

       userLog($msg,$level)

       Alias for $self->userLogger->$level($msg). Prefer to use this form (required for Auth/Combination)

       userError()userNotice()userInfo()

       Alias for userLog(level). Note that you must use $self->userLogger->$level instead

   Contentsending
       Note that $req, the first argument of these functions, is a Lemonldap::NG::Common::PSGI::Request. See the
       corresponding documentation.

       sendHtml($req,$template)

       This  method build HTML response using HTML::Template and the template $template.  $template file must be
       in $self->templateDir directory.  HTML template will receive 5 variables:

       SCRIPT_NAME: the path to the (F)CGI
       STATIC_PREFIX: content of $self->staticPrefix
       AVAILABLE_LANGUAGES: content of $self->languages
       LINKS: JSON stringification of $self->links
       VERSION: Lemonldap::NG version

       The response is always send with a 200 code.

       sendJSONresponse($req,$json,%args)

       Stringify $json object and send it  to  the  client.  $req  is  the  Lemonldap::NG::Common::PSGI::Request
       object; %args can define the HTTP error code (200 by default) or headers to add.

       If client is not json compatible (`Accept` header), response is send in XML.

       Examples:

         $self->sendJSONresponse ( $req, { result => 0 }, code => 400 );

         $self->sendJSONresponse ( $req, { result => 1 } );

         $self->sendJSONresponse ( $req, { result => 1 }, headers => [ X => Z ] );

       sendError($req,$msg,$code)

       Call  sendJSONresponse  with  `{ error => $msg }` and code (default to 500) and call lmLog() to duplicate
       error in logs

       abort($msg)

       When an error is detected during startup (init() sub), you must not call sendError()  but  call  abort().
       Each request received later will receive the error (abort uses sendError() behind the scene).

   Accessorserror

       String error. Used if init() fails or if sendError is called without argument.

       languages

       String containing list of languages (ie "fr, en'). Used by sendHtml().

       logLevel

       See lmLog().

       staticPrefix

       String indicating the path of static content (js, css,...). Used by sendHtml().

       templateDir

       Directory containing template files.

       links

       Array of links to display by sendHtml(). Each element has the form:

        { target => 'http://target', title => 'string to display' }

       syslog

       Syslog facility. If empty, STDERR will be used for logging

       Lemonldap::NG::Common::PSGI - Base library for PSGI modules of Lemonldap::NG.  Use
       Lemonldap::NG::Common::PSGI::Router for REST API.

       <http://lemonldap-ng.org/>,      Lemonldap::NG::Portal,      Lemonldap::NG::Handler,     Plack,     PSGI,
       Lemonldap::NG::Common::PSGI::Router, Lemonldap::NG::Common::PSGI::Request, HTML::Template,

         package My::PSGI;

         use base Lemonldap::NG::Common::PSGI;

         sub init {
           my ($self,$args) = @_;
           # Will be called 1 time during startup

           # Store debug level
           $self->logLevel('info');
           # It is possible to use syslog for user actions
           $self->syslog('daemon');

           # Return a boolean. If false, then error message has to be stored in
           # $self->error
           return 1;
         }

         sub handler {
           my ( $self, $req ) = @_;
           # Do something and return a PSGI response
           # NB: $req is a Lemonldap::NG::Common::PSGI::Request object

           return [ 200, [ 'Content-Type' => 'text/plain' ], [ 'Body lines' ] ];
         }

       This package could then be called as a CGI, using FastCGI,...

         #!/usr/bin/env perl

         use My::PSGI;
         use Plack::Handler::FCGI; # or Plack::Handler::CGI

         Plack::Handler::FCGI->new->run( My::PSGI->run() );