Example #1
0
    def dispatch(self):
        """Dispatches the requested method."""

        request = self.request
        method_name = request.route.handler_method
        if not method_name:
            method_name = webapp2._normalize_handler_method(request.method)

        method = getattr(self, method_name, None)
        if method is None:
            # 405 Method Not Allowed.
            # The response MUST include an Allow header containing a
            # list of valid methods for the requested resource.
            # http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.6
            valid = ', '.join(webapp2._get_handler_methods(self))
            self.abort(405, headers=[('Allow', valid)])

        # The handler only receives *args if no named variables are set.
        args, kwargs = request.route_args, request.route_kwargs
        if kwargs:
            args = ()

        # bind session on dispatch (not in __init__)
        self.session = get_current_session()
        # init messages array based on session
        self.session['_gaetk_messages'] = self.session.get('_gaetk_messages', [])
        # Give authentication Hooks opportunity to do their thing
        self.authchecker(method, *args, **kwargs)

        # Execute the method.
        reply = method(*args, **kwargs)

        # find out which return convention was used - first set defaults ...
        content = reply
        statuscode = 200
        cachingtime = self.default_cachingtime
        # ... then check if we got a 2-tuple reply ...
        if isinstance(reply, tuple) and len(reply) == 2:
            content, statuscode = reply
        # ... or a 3-tuple reply.
        if isinstance(reply, tuple) and len(reply) == 3:
            content, statuscode, cachingtime = reply
        # Finally begin sending the response
        response = self.serialize(content)
        if cachingtime:
            self.response.headers['Cache-Control'] = 'max-age=%d, public' % cachingtime
        # If we have gotten a `callback` parameter, we expect that this is a
        # [JSONP](http://en.wikipedia.org/wiki/JSONP#JSONP) cann and therefore add the padding
        if self.request.get('callback', None):
            response = "%s (%s)" % (self.request.get('callback', None), response)
            self.response.headers['Content-Type'] = 'text/javascript'
        else:
            self.response.headers['Content-Type'] = 'application/json'
        # Set status code and write JSON to output stream
        self.response.set_status(statuscode)
        self.response.out.write(response)
        self.response.out.write('\n')
Example #2
0
    def dispatch(self):
        """Dispatches the requested method."""
        request = self.request
        method_name = request.route.handler_method
        if not method_name:
            method_name = webapp2._normalize_handler_method(request.method)

        method = getattr(self, method_name, None)
        if method is None:
            # 405 Method Not Allowed.
            # The response MUST include an Allow header containing a
            # list of valid methods for the requested resource.
            # http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.6
            methods = []
            for method in ('GET', 'POST', 'HEAD', 'OPTIONS', 'PUT', 'DELETE', 'TRACE'):
                if getattr(self, webapp2._normalize_handler_method(method), None):
                    methods.append(method)
            valid = ', '.join(methods)
            self.abort(405, headers=[('Allow', valid)])

        # The handler only receives *args if no named variables are set.
        args, kwargs = request.route_args, request.route_kwargs
        if kwargs:
            args = ()

        # bind session on dispatch (not in __init__)
        try:
            self.session = get_current_session()
        except AttributeError:
            # session handling not activated
            self.session = {}
        # init messages array based on session
        self.session['_gaetk_messages'] = self.session.get('_gaetk_messages', [])
        # Give authentication Hooks opportunity to do their thing
        self.authchecker(method, *args, **kwargs)

        ret = method(*args, **kwargs)
        self.finished_hook(ret, method, *args, **kwargs)
        return ret