C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org) # Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php """ Cascades through several applications, so long as applications return ``404 Not Found``. """ from paste import httpexceptions from paste.util import converters import tempfile from cStringIO import StringIO __all__ = ['Cascade'] def make_cascade(loader, global_conf, catch='404', **local_conf): """ Entry point for Paste Deploy configuration Expects configuration like:: [composit:cascade] use = egg:Paste#cascade # all start with 'app' and are sorted alphabetically app1 = foo app2 = bar ... catch = 404 500 ... """ catch = map(int, converters.aslist(catch)) apps = [] for name, value in local_conf.items(): if not name.startswith('app'): raise ValueError( "Bad configuration key %r (=%r); all configuration keys " "must start with 'app'" % (name, value)) app = loader.get_app(value, global_conf=global_conf) apps.append((name, app)) apps.sort() apps = [app for name, app in apps] return Cascade(apps, catch=catch) class Cascade(object): """ Passed a list of applications, ``Cascade`` will try each of them in turn. If one returns a status code listed in ``catch`` (by default just ``404 Not Found``) then the next application is tried. If all applications fail, then the last application's failure response is used. Instances of this class are WSGI applications. """ def __init__(self, applications, catch=(404,)): self.apps = applications self.catch_codes = {} self.catch_exceptions = [] for error in catch: if isinstance(error, str): error = int(error.split(None, 1)[0]) if isinstance(error, httpexceptions.HTTPException): exc = error code = error.code else: exc = httpexceptions.get_exception(error) code = error self.catch_codes[code] = exc self.catch_exceptions.append(exc) self.catch_exceptions = tuple(self.catch_exceptions) def __call__(self, environ, start_response): """ WSGI application interface """ failed = [] def repl_start_response(status, headers, exc_info=None): code = int(status.split(None, 1)[0]) if code in self.catch_codes: failed.append(None) return _consuming_writer return start_response(status, head