777 # WSGI #########

   778 

   779 WSGI_CHOICES = {}

   780 try:

   781     from cubicweb.wsgi import server as stdlib_server

   782 except ImportError:

   783     pass

   784 else:

   785     WSGI_CHOICES['stdlib'] = stdlib_server

   786 try:

   787     from cubicweb.wsgi import wz

   788 except ImportError:

   789     pass

   790 else:

   791     WSGI_CHOICES['werkzeug'] = wz

   792 try:

   793     from cubicweb.wsgi import tnd

   794 except ImportError:

   795     pass

   796 else:

   797     WSGI_CHOICES['tornado'] = tnd

   798 

   799 

   800 def wsgichoices():

   801     return tuple(WSGI_CHOICES)

   802 

   803 

   804 if WSGI_CHOICES:

   805     class WSGIStartHandler(InstanceCommand):

   806         """Start an interactive wsgi server """

   807         name = 'wsgi'

   808         actionverb = 'started'

   809         arguments = '<instance>'

   810 

   811         @property

   812         def options(self):

   813             return (

   814                 ("debug",

   815                  {'short': 'D', 'action': 'store_true',

   816                   'default': False,

   817                   'help': 'start server in debug mode.'}),

   818                 ('method',

   819                  {'short': 'm',

   820                   'type': 'choice',

   821                   'metavar': '<method>',

   822                   'default': 'stdlib',

   823                   'choices': wsgichoices(),

   824                   'help': 'wsgi utility/method'}),

   825                 ('loglevel',

   826                  {'short': 'l',

   827                   'type': 'choice',

   828                   'metavar': '<log level>',

   829                   'default': None,

   830                   'choices': ('debug', 'info', 'warning', 'error'),

   831                   'help': 'debug if -D is set, error otherwise',

   832                   }),

   833             )

   834 

   835         def wsgi_instance(self, appid):

   836             config = cwcfg.config_for(appid, debugmode=self['debug'])

   837             init_cmdline_log_threshold(config, self['loglevel'])

   838             assert config.name == 'all-in-one'

   839             meth = self['method']

   840             server = WSGI_CHOICES[meth]

   841             return server.run(config)

   842 

   843     CWCTL.register(WSGIStartHandler)

   844 

   845