crossbar.twisted.resource.Resource404

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2 Examples 7

0 Source : router.py
with MIT License
from fbla-competitive-events

    def _create_web_factory(self, config):

        options = config.get('options', {})

        # create Twisted Web root resource
        if '/' in config['paths']:
            root_config = config['paths']['/']
            root = self._create_resource(root_config, nested=False)
        else:
            root = Resource404(self._templates, b'')

        # create Twisted Web resources on all non-root paths configured
        self._add_paths(root, config.get('paths', {}))

        # create the actual transport factory
        transport_factory = Site(root)
        transport_factory.noisy = False

        # Web access logging
        if not options.get('access_log', False):
            transport_factory.log = lambda _: None

        # Traceback rendering
        transport_factory.displayTracebacks = options.get('display_tracebacks', False)

        # HSTS
        if options.get('hsts', False):
            if 'tls' in config['endpoint']:
                hsts_max_age = int(options.get('hsts_max_age', 31536000))
                transport_factory.requestFactory = createHSTSRequestFactory(transport_factory.requestFactory, hsts_max_age)
            else:
                self.log.warn("Warning: HSTS requested, but running on non-TLS - skipping HSTS")

        return transport_factory

    def _add_paths(self, resource, paths):

0 Source : router.py
with MIT License
from fbla-competitive-events

    def _create_resource(self, path_config, nested=True):
        """
        Creates child resource to be added to the parent.

        :param path_config: Configuration for the new child resource.
        :type path_config: dict

        :returns: Resource -- the new child resource
        """
        # WAMP-WebSocket resource
        #
        if path_config['type'] == 'websocket':

            ws_factory = WampWebSocketServerFactory(self._router_session_factory, self.config.extra.cbdir, path_config, self._templates)

            # FIXME: Site.start/stopFactory should start/stop factories wrapped as Resources
            ws_factory.startFactory()

            return WebSocketResource(ws_factory)

        # Static file hierarchy resource
        #
        elif path_config['type'] == 'static':

            static_options = path_config.get('options', {})

            if 'directory' in path_config:

                static_dir = os.path.abspath(os.path.join(self.config.extra.cbdir, path_config['directory']))

            elif 'package' in path_config:

                if 'resource' not in path_config:
                    raise ApplicationError(u"crossbar.error.invalid_configuration", "missing resource")

                try:
                    mod = importlib.import_module(path_config['package'])
                except ImportError as e:
                    emsg = "Could not import resource {} from package {}: {}".format(path_config['resource'], path_config['package'], e)
                    self.log.error(emsg)
                    raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)
                else:
                    try:
                        static_dir = os.path.abspath(pkg_resources.resource_filename(path_config['package'], path_config['resource']))
                    except Exception as e:
                        emsg = "Could not import resource {} from package {}: {}".format(path_config['resource'], path_config['package'], e)
                        self.log.error(emsg)
                        raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)

            else:

                raise ApplicationError(u"crossbar.error.invalid_configuration", "missing web spec")

            static_dir = static_dir.encode('ascii', 'ignore')  # http://stackoverflow.com/a/20433918/884770

            # create resource for file system hierarchy
            #
            if static_options.get('enable_directory_listing', False):
                static_resource_class = StaticResource
            else:
                static_resource_class = StaticResourceNoListing

            cache_timeout = static_options.get('cache_timeout', DEFAULT_CACHE_TIMEOUT)

            static_resource = static_resource_class(static_dir, cache_timeout=cache_timeout)

            # set extra MIME types
            #
            static_resource.contentTypes.update(EXTRA_MIME_TYPES)
            if 'mime_types' in static_options:
                static_resource.contentTypes.update(static_options['mime_types'])
            patchFileContentTypes(static_resource)

            # render 404 page on any concrete path not found
            #
            static_resource.childNotFound = Resource404(self._templates, static_dir)

            return static_resource

        # WSGI resource
        #
        elif path_config['type'] == 'wsgi':

            if not _HAS_WSGI:
                raise ApplicationError(u"crossbar.error.invalid_configuration", "WSGI unsupported")

            if 'module' not in path_config:
                raise ApplicationError(u"crossbar.error.invalid_configuration", "missing WSGI app module")

            if 'object' not in path_config:
                raise ApplicationError(u"crossbar.error.invalid_configuration", "missing WSGI app object")

            # import WSGI app module and object
            mod_name = path_config['module']
            try:
                mod = importlib.import_module(mod_name)
            except ImportError as e:
                raise ApplicationError(u"crossbar.error.invalid_configuration", "WSGI app module '{}' import failed: {} - Python search path was {}".format(mod_name, e, sys.path))
            else:
                obj_name = path_config['object']
                if obj_name not in mod.__dict__:
                    raise ApplicationError(u"crossbar.error.invalid_configuration", "WSGI app object '{}' not in module '{}'".format(obj_name, mod_name))
                else:
                    app = getattr(mod, obj_name)

            # Create a threadpool for running the WSGI requests in
            pool = ThreadPool(maxthreads=path_config.get("maxthreads", 20),
                              minthreads=path_config.get("minthreads", 0),
                              name="crossbar_wsgi_threadpool")
            self._reactor.addSystemEventTrigger('before', 'shutdown', pool.stop)
            pool.start()

            # Create a Twisted Web WSGI resource from the user's WSGI application object
            try:
                wsgi_resource = WSGIResource(self._reactor, pool, app)

                if not nested:
                    wsgi_resource = WSGIRootResource(wsgi_resource, {})
            except Exception as e:
                raise ApplicationError(u"crossbar.error.invalid_configuration", "could not instantiate WSGI resource: {}".format(e))
            else:
                return wsgi_resource

        # Redirecting resource
        #
        elif path_config['type'] == 'redirect':
            redirect_url = path_config['url'].encode('ascii', 'ignore')
            return RedirectResource(redirect_url)

        # Reverse proxy resource
        #
        elif path_config['type'] == 'reverseproxy':
            host = path_config['host']
            port = int(path_config.get('port', 80))
            path = path_config.get('path', '').encode('ascii', 'ignore')
            return ReverseProxyResource(host, port, path)

        # JSON value resource
        #
        elif path_config['type'] == 'json':
            value = path_config['value']

            return JsonResource(value)

        # CGI script resource
        #
        elif path_config['type'] == 'cgi':

            cgi_processor = path_config['processor']
            cgi_directory = os.path.abspath(os.path.join(self.config.extra.cbdir, path_config['directory']))
            cgi_directory = cgi_directory.encode('ascii', 'ignore')  # http://stackoverflow.com/a/20433918/884770

            return CgiDirectory(cgi_directory, cgi_processor, Resource404(self._templates, cgi_directory))

        # WAMP-Longpoll transport resource
        #
        elif path_config['type'] == 'longpoll':

            path_options = path_config.get('options', {})

            lp_resource = WampLongPollResource(self._router_session_factory,
                                               timeout=path_options.get('request_timeout', 10),
                                               killAfter=path_options.get('session_timeout', 30),
                                               queueLimitBytes=path_options.get('queue_limit_bytes', 128 * 1024),
                                               queueLimitMessages=path_options.get('queue_limit_messages', 100),
                                               debug_transport_id=path_options.get('debug_transport_id', None)
                                               )
            lp_resource._templates = self._templates

            return lp_resource

        # Publisher resource (part of REST-bridge)
        #
        elif path_config['type'] == 'publisher':

            # create a vanilla session: the publisher will use this to inject events
            #
            publisher_session_config = ComponentConfig(realm=path_config['realm'], extra=None)
            publisher_session = ApplicationSession(publisher_session_config)

            # add the publisher session to the router
            #
            self._router_session_factory.add(publisher_session, authrole=path_config.get('role', 'anonymous'))

            # now create the publisher Twisted Web resource
            #
            return PublisherResource(path_config.get('options', {}), publisher_session)

        # Webhook resource (part of REST-bridge)
        #
        elif path_config['type'] == 'webhook':

            # create a vanilla session: the webhook will use this to inject events
            #
            webhook_session_config = ComponentConfig(realm=path_config['realm'], extra=None)
            webhook_session = ApplicationSession(webhook_session_config)

            # add the webhook session to the router
            #
            self._router_session_factory.add(webhook_session, authrole=path_config.get('role', 'anonymous'))

            # now create the webhook Twisted Web resource
            #
            return WebhookResource(path_config.get('options', {}), webhook_session)

        # Caller resource (part of REST-bridge)
        #
        elif path_config['type'] == 'caller':

            # create a vanilla session: the caller will use this to inject calls
            #
            caller_session_config = ComponentConfig(realm=path_config['realm'], extra=None)
            caller_session = ApplicationSession(caller_session_config)

            # add the calling session to the router
            #
            self._router_session_factory.add(caller_session, authrole=path_config.get('role', 'anonymous'))

            # now create the caller Twisted Web resource
            #
            return CallerResource(path_config.get('options', {}), caller_session)

        # File Upload resource
        #
        elif path_config['type'] == 'upload':

            upload_directory = os.path.abspath(os.path.join(self.config.extra.cbdir, path_config['directory']))
            upload_directory = upload_directory.encode('ascii', 'ignore')  # http://stackoverflow.com/a/20433918/884770
            if not os.path.isdir(upload_directory):
                emsg = "configured upload directory '{}' in file upload resource isn't a directory".format(upload_directory)
                self.log.error(emsg)
                raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)

            if 'temp_directory' in path_config:
                temp_directory = os.path.abspath(os.path.join(self.config.extra.cbdir, path_config['temp_directory']))
                temp_directory = temp_directory.encode('ascii', 'ignore')  # http://stackoverflow.com/a/20433918/884770
            else:
                temp_directory = os.path.abspath(tempfile.gettempdir())
                temp_directory = os.path.join(temp_directory, 'crossbar-uploads')
                if not os.path.exists(temp_directory):
                    os.makedirs(temp_directory)

            if not os.path.isdir(temp_directory):
                emsg = "configured temp directory '{}' in file upload resource isn't a directory".format(temp_directory)
                self.log.error(emsg)
                raise ApplicationError(u"crossbar.error.invalid_configuration", emsg)

            # file upload progress and finish events are published via this session
            #
            upload_session_config = ComponentConfig(realm=path_config['realm'], extra=None)
            upload_session = ApplicationSession(upload_session_config)

            self._router_session_factory.add(upload_session, authrole=path_config.get('role', 'anonymous'))

            self.log.info("File upload resource started. Uploads to {upl} using temp folder {tmp}.", upl=upload_directory, tmp=temp_directory)

            return FileUploadResource(upload_directory, temp_directory, path_config['form_fields'], upload_session, path_config.get('options', {}))

        # Generic Twisted Web resource
        #
        elif path_config['type'] == 'resource':

            try:
                klassname = path_config['classname']

                self.log.debug("Starting class '{}'".format(klassname))

                c = klassname.split('.')
                module_name, klass_name = '.'.join(c[:-1]), c[-1]
                module = importlib.import_module(module_name)
                make = getattr(module, klass_name)

                return make(path_config.get('extra', {}))

            except Exception as e:
                emsg = "Failed to import class '{}' - {}".format(klassname, e)
                self.log.error(emsg)
                self.log.error("PYTHONPATH: {pythonpath}", pythonpath=sys.path)
                raise ApplicationError(u"crossbar.error.class_import_failed", emsg)

        # Schema Docs resource
        #
        elif path_config['type'] == 'schemadoc':

            realm = path_config['realm']

            if realm not in self.realm_to_id:
                raise ApplicationError(u"crossbar.error.no_such_object", "No realm with URI '{}' configured".format(realm))

            realm_id = self.realm_to_id[realm]

            realm_schemas = self.realms[realm_id].session._schemas

            return SchemaDocResource(self._templates, realm, realm_schemas)

        # Nested subpath resource
        #
        elif path_config['type'] == 'path':

            nested_paths = path_config.get('paths', {})

            if '/' in nested_paths:
                nested_resource = self._create_resource(nested_paths['/'])
            else:
                nested_resource = Resource404(self._templates, b'')

            # nest subpaths under the current entry
            #
            self._add_paths(nested_resource, nested_paths)

            return nested_resource

        else:
            raise ApplicationError(u"crossbar.error.invalid_configuration",
                                   "invalid Web path type '{}' in {} config".format(path_config['type'],
                                                                                    'nested' if nested else 'root'))

    def stop_router_transport(self, id, details=None):