author | sylvain.thenault@logilab.fr |
Tue, 12 May 2009 17:15:41 +0200 | |
branch | tls-sprint |
changeset 1747 | d48613e65196 |
parent 1543 | dca9817bb337 |
child 1936 | c5af2fbda5b6 |
permissions | -rw-r--r-- |
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"""twisted server for CubicWeb web applications |
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:organization: Logilab |
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:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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""" |
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__docformat__ = "restructuredtext en" |
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import sys |
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import select |
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from time import mktime |
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from datetime import date, timedelta |
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from urlparse import urlsplit, urlunsplit |
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from twisted.application import service, strports |
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from twisted.internet import reactor, task, threads |
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from twisted.internet.defer import maybeDeferred |
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from twisted.web2 import channel, http, server, iweb |
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from twisted.web2 import static, resource, responsecode |
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from cubicweb import ObjectNotFound |
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from cubicweb.web import (AuthenticationError, NotFound, Redirect, |
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RemoteCallFailed, DirectResponse, StatusResponse, |
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ExplicitLogin) |
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from cubicweb.web.application import CubicWebPublisher |
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from cubicweb.etwist.request import CubicWebTwistedRequestAdapter |
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def start_task(interval, func): |
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lc = task.LoopingCall(func) |
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lc.start(interval) |
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def start_looping_tasks(repo): |
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for interval, func in repo._looping_tasks: |
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repo.info('starting twisted task %s with interval %.2fs', |
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func.__name__, interval) |
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def catch_error_func(repo=repo, func=func): |
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try: |
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func() |
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except: |
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repo.exception('error in looping task') |
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start_task(interval, catch_error_func) |
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# ensure no tasks will be further added |
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repo._looping_tasks = () |
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def host_prefixed_baseurl(baseurl, host): |
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scheme, netloc, url, query, fragment = urlsplit(baseurl) |
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netloc_domain = '.' + '.'.join(netloc.split('.')[-2:]) |
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if host.endswith(netloc_domain): |
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netloc = host |
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baseurl = urlunsplit((scheme, netloc, url, query, fragment)) |
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return baseurl |
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class LongTimeExpiringFile(static.File): |
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"""overrides static.File and sets a far futre ``Expires`` date |
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on the resouce. |
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versions handling is done by serving static files by different |
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URLs for each version. For instance:: |
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http://localhost:8080/data-2.48.2/cubicweb.css |
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http://localhost:8080/data-2.49.0/cubicweb.css |
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etc. |
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""" |
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def renderHTTP(self, request): |
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def setExpireHeader(response): |
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response = iweb.IResponse(response) |
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# Don't provide additional resource information to error responses |
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if response.code < 400: |
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# the HTTP RFC recommands not going further than 1 year ahead |
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expires = date.today() + timedelta(days=6*30) |
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response.headers.setHeader('Expires', mktime(expires.timetuple())) |
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return response |
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d = maybeDeferred(super(LongTimeExpiringFile, self).renderHTTP, request) |
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return d.addCallback(setExpireHeader) |
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class CubicWebRootResource(resource.PostableResource): |
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addSlash = False |
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def __init__(self, config, debug=None): |
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self.appli = CubicWebPublisher(config, debug=debug) |
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self.debugmode = debug |
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self.config = config |
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self.base_url = config['base-url'] or config.default_base_url() |
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self.versioned_datadir = 'data%s' % config.instance_md5_version() |
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assert self.base_url[-1] == '/' |
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self.https_url = config['https-url'] |
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assert not self.https_url or self.https_url[-1] == '/' |
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# when we have an in-memory repository, clean unused sessions every XX |
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# seconds and properly shutdown the server |
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if config.repo_method == 'inmemory': |
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reactor.addSystemEventTrigger('before', 'shutdown', |
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self.shutdown_event) |
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# monkey patch start_looping_task to get proper reactor integration |
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self.appli.repo.__class__.start_looping_tasks = start_looping_tasks |
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if config.pyro_enabled(): |
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# if pyro is enabled, we have to register to the pyro name |
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# server, create a pyro daemon, and create a task to handle pyro |
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# requests |
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self.pyro_daemon = self.appli.repo.pyro_register() |
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self.pyro_listen_timeout = 0.02 |
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start_task(1, self.pyro_loop_event) |
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self.appli.repo.start_looping_tasks() |
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try: |
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self.url_rewriter = self.appli.vreg.select_component('urlrewriter') |
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except ObjectNotFound: |
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self.url_rewriter = None |
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interval = min(config['cleanup-session-time'] or 120, |
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config['cleanup-anonymous-session-time'] or 720) / 2. |
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start_task(interval, self.appli.session_handler.clean_sessions) |
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def shutdown_event(self): |
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"""callback fired when the server is shutting down to properly |
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clean opened sessions |
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""" |
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self.appli.repo.shutdown() |
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def pyro_loop_event(self): |
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"""listen for pyro events""" |
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try: |
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self.pyro_daemon.handleRequests(self.pyro_listen_timeout) |
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except select.error: |
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return |
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def locateChild(self, request, segments): |
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"""Indicate which resource to use to process down the URL's path""" |
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if segments: |
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if segments[0] == 'https': |
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segments = segments[1:] |
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if len(segments) >= 2: |
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if segments[0] in (self.versioned_datadir, 'data', 'static'): |
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# Anything in data/, static/ is treated as static files |
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if segments[0] == 'static': |
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# instance static directory |
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datadir = self.config.static_directory |
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else: |
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# cube static data file |
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datadir = self.config.locate_resource(segments[1]) |
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if datadir is None: |
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return None, [] |
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self.info('static file %s from %s', segments[-1], datadir) |
146 |
if segments[0] == 'data': |
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return static.File(str(datadir)), segments[1:] |
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else: |
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return LongTimeExpiringFile(datadir), segments[1:] |
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elif segments[0] == 'fckeditor': |
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fckeditordir = self.config.ext_resources['FCKEDITOR_PATH'] |
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return static.File(fckeditordir), segments[1:] |
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# Otherwise we use this single resource |
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return self, () |
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def render(self, request): |
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"""Render a page from the root resource""" |
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# reload modified files (only in development or debug mode) |
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if self.config.mode == 'dev' or self.debugmode: |
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self.appli.vreg.register_objects(self.config.vregistry_path()) |
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if self.config['profile']: # default profiler don't trace threads |
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return self.render_request(request) |
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else: |
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return threads.deferToThread(self.render_request, request) |
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def render_request(self, request): |
167 |
origpath = request.path |
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host = request.host |
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# dual http/https access handling: expect a rewrite rule to prepend |
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# 'https' to the path to detect https access |
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if origpath.split('/', 2)[1] == 'https': |
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origpath = origpath[6:] |
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request.uri = request.uri[6:] |
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https = True |
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baseurl = self.https_url or self.base_url |
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else: |
177 |
https = False |
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baseurl = self.base_url |
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parents:
1420
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if self.config['use-request-subdomain']: |
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baseurl = host_prefixed_baseurl(baseurl, host) |
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self.warning('used baseurl is %s for this request', baseurl) |
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req = CubicWebTwistedRequestAdapter(request, self.appli.vreg, https, baseurl) |
183 |
if req.authmode == 'http': |
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# activate realm-based auth |
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realm = self.config['realm'] |
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req.set_header('WWW-Authenticate', [('Basic', {'realm' : realm })], raw=False) |
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try: |
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self.appli.connect(req) |
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except AuthenticationError: |
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return self.request_auth(req) |
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except Redirect, ex: |
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return self.redirect(req, ex.location) |
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if https and req.cnx.anonymous_connection: |
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# don't allow anonymous on https connection |
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return self.request_auth(req) |
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if self.url_rewriter is not None: |
1115 | 197 |
# XXX should occur before authentication? |
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try: |
199 |
path = self.url_rewriter.rewrite(host, origpath) |
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200 |
except Redirect, ex: |
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201 |
return self.redirect(req, ex.location) |
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request.uri.replace(origpath, path, 1) |
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else: |
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204 |
path = origpath |
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if not path or path == "/": |
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206 |
path = 'view' |
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try: |
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result = self.appli.publish(path, req) |
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except DirectResponse, ex: |
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210 |
return ex.response |
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211 |
except StatusResponse, ex: |
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212 |
return http.Response(stream=ex.content, code=ex.status, |
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headers=req.headers_out or None) |
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except RemoteCallFailed, ex: |
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req.set_header('content-type', 'application/json') |
|
216 |
return http.Response(stream=ex.dumps(), |
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code=responsecode.INTERNAL_SERVER_ERROR) |
|
218 |
except NotFound: |
|
219 |
result = self.appli.notfound_content(req) |
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220 |
return http.Response(stream=result, code=responsecode.NOT_FOUND, |
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headers=req.headers_out or None) |
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except ExplicitLogin: # must be before AuthenticationError |
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return self.request_auth(req) |
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224 |
except AuthenticationError: |
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225 |
if self.config['auth-mode'] == 'cookie': |
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# in cookie mode redirecting to the index view is enough : |
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227 |
# either anonymous connection is allowed and the page will |
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# be displayed or we'll be redirected to the login form |
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229 |
msg = req._('you have been logged out') |
|
230 |
if req.https: |
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231 |
req._base_url = self.base_url |
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232 |
req.https = False |
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233 |
url = req.build_url('view', vid='index', __message=msg) |
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234 |
return self.redirect(req, url) |
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else: |
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# in http we have to request auth to flush current http auth |
|
237 |
# information |
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238 |
return self.request_auth(req, loggedout=True) |
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239 |
except Redirect, ex: |
|
240 |
return self.redirect(req, ex.location) |
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241 |
# request may be referenced by "onetime callback", so clear its entity |
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242 |
# cache to avoid memory usage |
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243 |
req.drop_entity_cache() |
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244 |
return http.Response(stream=result, code=responsecode.OK, |
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245 |
headers=req.headers_out or None) |
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246 |
||
247 |
def redirect(self, req, location): |
|
248 |
req.headers_out.setHeader('location', str(location)) |
|
249 |
self.debug('redirecting to %s', location) |
|
250 |
# 303 See other |
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251 |
return http.Response(code=303, headers=req.headers_out) |
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0 | 253 |
def request_auth(self, req, loggedout=False): |
254 |
if self.https_url and req.base_url() != self.https_url: |
|
255 |
req.headers_out.setHeader('location', self.https_url + 'login') |
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return http.Response(code=303, headers=req.headers_out) |
0 | 257 |
if self.config['auth-mode'] == 'http': |
258 |
code = responsecode.UNAUTHORIZED |
|
259 |
else: |
|
260 |
code = responsecode.FORBIDDEN |
|
261 |
if loggedout: |
|
262 |
if req.https: |
|
263 |
req._base_url = self.base_url |
|
264 |
req.https = False |
|
265 |
content = self.appli.loggedout_content(req) |
|
266 |
else: |
|
267 |
content = self.appli.need_login_content(req) |
|
268 |
return http.Response(code, req.headers_out, content) |
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0 | 271 |
# This part gets run when you run this file via: "twistd -noy demo.py" |
272 |
def main(appid, cfgname): |
|
273 |
"""Starts an cubicweb twisted server for an application |
|
274 |
||
275 |
appid: application's identifier |
|
276 |
cfgname: name of the configuration to use (twisted or all-in-one) |
|
277 |
""" |
|
278 |
from cubicweb.cwconfig import CubicWebConfiguration |
|
279 |
from cubicweb.etwist import twconfig # trigger configuration registration |
|
280 |
config = CubicWebConfiguration.config_for(appid, cfgname) |
|
281 |
# XXX why calling init_available_cubes here ? |
|
282 |
config.init_available_cubes() |
|
283 |
# create the site and application objects |
|
284 |
if '-n' in sys.argv: # debug mode |
|
285 |
cubicweb = CubicWebRootResource(config, debug=True) |
|
286 |
else: |
|
287 |
cubicweb = CubicWebRootResource(config) |
|
288 |
#toplevel = vhost.VHostURIRewrite(base_url, cubicweb) |
|
289 |
toplevel = cubicweb |
|
290 |
website = server.Site(toplevel) |
|
291 |
application = service.Application("cubicweb") |
|
292 |
# serve it via standard HTTP on port set in the configuration |
|
293 |
s = strports.service('tcp:%04d' % (config['port'] or 8080), |
|
294 |
channel.HTTPFactory(website)) |
|
295 |
s.setServiceParent(application) |
|
296 |
return application |
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297 |
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298 |
||
299 |
from twisted.python import failure |
|
300 |
from twisted.internet import defer |
|
301 |
from twisted.web2 import fileupload |
|
302 |
||
303 |
# XXX set max file size to 100Mo: put max upload size in the configuration |
|
304 |
# line below for twisted >= 8.0, default param value for earlier version |
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|
305 |
resource.PostableResource.maxSize = 100*1024*1024 |
0 | 306 |
def parsePOSTData(request, maxMem=100*1024, maxFields=1024, |
307 |
maxSize=100*1024*1024): |
|
308 |
if request.stream.length == 0: |
|
309 |
return defer.succeed(None) |
|
1420
25c13e5b12bd
stop complaining about empty response, remove trailing spaces
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
310 |
|
0 | 311 |
ctype = request.headers.getHeader('content-type') |
312 |
||
313 |
if ctype is None: |
|
314 |
return defer.succeed(None) |
|
315 |
||
316 |
def updateArgs(data): |
|
317 |
args = data |
|
318 |
request.args.update(args) |
|
319 |
||
320 |
def updateArgsAndFiles(data): |
|
321 |
args, files = data |
|
322 |
request.args.update(args) |
|
323 |
request.files.update(files) |
|
324 |
||
325 |
def error(f): |
|
326 |
f.trap(fileupload.MimeFormatError) |
|
327 |
raise http.HTTPError(responsecode.BAD_REQUEST) |
|
1420
25c13e5b12bd
stop complaining about empty response, remove trailing spaces
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
328 |
|
0 | 329 |
if ctype.mediaType == 'application' and ctype.mediaSubtype == 'x-www-form-urlencoded': |
330 |
d = fileupload.parse_urlencoded(request.stream, keep_blank_values=True) |
|
331 |
d.addCallbacks(updateArgs, error) |
|
332 |
return d |
|
333 |
elif ctype.mediaType == 'multipart' and ctype.mediaSubtype == 'form-data': |
|
334 |
boundary = ctype.params.get('boundary') |
|
335 |
if boundary is None: |
|
336 |
return defer.fail(http.HTTPError( |
|
337 |
http.StatusResponse(responsecode.BAD_REQUEST, |
|
338 |
"Boundary not specified in Content-Type."))) |
|
339 |
d = fileupload.parseMultipartFormData(request.stream, boundary, |
|
340 |
maxMem, maxFields, maxSize) |
|
341 |
d.addCallbacks(updateArgsAndFiles, error) |
|
342 |
return d |
|
343 |
else: |
|
344 |
raise http.HTTPError(responsecode.BAD_REQUEST) |
|
345 |
||
346 |
server.parsePOSTData = parsePOSTData |
|
347 |
||
348 |
||
349 |
from logging import getLogger |
|
350 |
from cubicweb import set_log_methods |
|
351 |
set_log_methods(CubicWebRootResource, getLogger('cubicweb.twisted')) |
|
352 |
||
353 |
||
354 |
||
355 |
def _gc_debug(): |
|
356 |
import gc |
|
357 |
from pprint import pprint |
|
358 |
from cubicweb.vregistry import VObject |
|
359 |
gc.collect() |
|
360 |
count = 0 |
|
361 |
acount = 0 |
|
362 |
ocount = {} |
|
363 |
for obj in gc.get_objects(): |
|
364 |
if isinstance(obj, CubicWebTwistedRequestAdapter): |
|
365 |
count += 1 |
|
366 |
elif isinstance(obj, VObject): |
|
367 |
acount += 1 |
|
368 |
else: |
|
369 |
try: |
|
1132 | 370 |
ocount[obj.__class__] += 1 |
0 | 371 |
except KeyError: |
372 |
ocount[obj.__class__] = 1 |
|
373 |
except AttributeError: |
|
374 |
pass |
|
375 |
print 'IN MEM REQUESTS', count |
|
376 |
print 'IN MEM APPOBJECTS', acount |
|
377 |
ocount = sorted(ocount.items(), key=lambda x: x[1], reverse=True)[:20] |
|
378 |
pprint(ocount) |
|
379 |
print 'UNREACHABLE', gc.garbage |