def pynamespace(module, filterfn=None):
"""if ``module`` is string import module and collect all attributes
defined in the module that do not start with `_`. If ``__all__`` is
defined, only fetch attributes listed under __all__. Additionally apply
``filterfn`` function and return a dictionary of namespace from module."""
module = h.string_import(module) if isinstance(module, str) else module
d = { k:getattr(module,k) for k in getattr(module,'__all__',vars(module)) }
[ d.pop(k) for k,v in d.items() if filterfn(k, v) ] if filterfn else None
return d
def _resourceof( self, request, viewd ):
"""For resolved view ``viewd``, fetch the resource-callable."""
res = viewd['resource']
self.pa.logdebug( "%r resource callable: %r " % (request.uri, res) )
if isinstance( res, str ) and isplugin( res ) :
return self.qp( IHTTPResource, res )
elif isinstance( res, str ) :
return h.string_import( res )
else :
return res
def _viewof( self, request, name, viewd ):
"""For resolved view ``viewd``, fetch the view-callable."""
v = viewd['view']
self.pa.logdebug( "%r view callable: %r " % (request.uri, v) )
if isinstance(v, str) and isplugin(v) :
view = self.qp( IHTTPView, v, name, viewd )
elif isinstance( v, str ):
view = h.string_import( v )
else :
view = v
return getattr( view, viewd['attr'] ) if viewd['attr'] else view
def onboot( self ):
""":meth:`pluggapps.web.interfaces.IHTTPRouter.onboot` interface
method. Deriving class must override this method and use
:meth:`add_view` to create router mapping."""
self.views = {}
self.viewlist = []
self.negotiator = None
if self['IHTTPNegotiator'] :
self.negotiator = self.qp(IHTTPNegotiator, self['IHTTPNegotiator'])
self['defaultview'] = h.string_import( self['defaultview'] )
# Route mapping file is configured, populate view-callables from the
# file.
mapfile = self['routemapper']
if mapfile and isfile( mapfile ) :
for kwargs in eval( open( mapfile ).read() ) :
name = kwargs.pop('name')
pattern = kwargs.pop('pattern')
self.add_view( name, pattern, **kwargs )
elif mapfile :
msg = "Wrong configuration for routemapper : %r" % mapfile
raise Exception( msg )
