#============================================================================ # This library is free software; you can redistribute it and/or # modify it under the terms of version 2.1 of the GNU Lesser General Public # License as published by the Free Software Foundation. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #============================================================================ # Copyright (C) 2004, 2005 Mike Wray #============================================================================ import types from xen.xend import sxp from xen.xend import PrettyPrint from xen.xend.Args import ArgError from xen.xend.XendError import XendError, XendInvalidDomain #from xen.xend.XendLogging import log import resource import http from xen.web.SrvBase import SrvBase class SrvConstructor: """Delayed constructor for sub-servers. Does not import the sub-server class or create the object until needed. """ def __init__(self, klass): """Create a constructor. It is assumed that the class should be imported as 'from xen.xend.server.klass import klass'. klass name of its class """ self.klass = klass self.obj = None def getobj(self): """Get the sub-server object, importing its class and instantiating it if necessary. """ if not self.obj: exec 'from xen.xend.server.%s import %s' % (self.klass, self.klass) klassobj = eval(self.klass) self.obj = klassobj() return self.obj class SrvDir(SrvBase): """Base class for directory servlets. """ isLeaf = False def __init__(self): SrvBase.__init__(self) self.table = {} self.order = [] def noChild(self, msg): return resource.ErrorPage(http.NOT_FOUND, msg=msg) def getChild(self, x, req): if x == '': return self try: val = self.get(x) except XendError, ex: return self.noChild(str(ex)) except XendInvalidDomain, ex: return self.noChild(str(ex)) if val is None: return self.noChild('Not found: ' + str(x)) else: return val def get(self, x): val = self.table.get(x) if isinstance(val, SrvConstructor): val = val.getobj() return val def add(self, x, v=None): if v is None: v = 'SrvDir' if isinstance(v, types.StringType): v = SrvConstructor(v) self.table[x] = v self.order.append(x) return v def render_GET(self, req): if self.use_sxp(req): req.setHeader("Content-type", sxp.mime_type) self.ls(req, 1) else: req.write('') self.print_path(req) self.ls(req) self.form(req) req.write('') return '' def ls(self, req, use_sxp=0): url = req.prePathURL() if not url.endswith('/'): url += '/' if use_sxp: req.write('(ls ') for k in self.order: req.write(' ' + k) req.write(')') else: req.write('

') def form(self, req): pass