web/views/debug.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Thu, 11 Mar 2010 16:49:07 +0100
branchstable
changeset 4866 550e35a69b75
parent 4865 90ad729d3540
child 4873 bfebe3d14d53
permissions -rw-r--r--
[debug] a new view to help debugging memory leaks
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"""management and error screens
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:organization: Logilab
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
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"""
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__docformat__ = "restructuredtext en"
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from time import strftime, localtime
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from logilab.mtconverter import xml_escape
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from cubicweb.selectors import none_rset, match_user_groups
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from cubicweb.view import StartupView
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def dict_to_html(w, dict):
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    # XHTML doesn't allow emtpy <ul> nodes
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    if dict:
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        w(u'<ul>')
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        for key in sorted(dict):
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            w(u'<li><span class="label">%s</span>: <span>%s</span></li>' % (
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                xml_escape(str(key)), xml_escape(repr(dict[key]))))
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        w(u'</ul>')
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class ProcessInformationView(StartupView):
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    """display various web server /repository information"""
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    __regid__ = 'info'
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    __select__ = none_rset() & match_user_groups('managers')
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    title = _('server information')
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    def call(self, **kwargs):
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        req = self._cw
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        dtformat = req.property_value('ui.datetime-format')
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        _ = req._
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        w = self.w
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        # generic instance information
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        w(u'<h1>%s</h1>' % _('Instance'))
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        w(u'<table>')
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        w(u'<tr><th align="left">%s</th><td>%s</td></tr>' % (
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            _('config type'), self._cw.vreg.config.name))
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        w(u'<tr><th align="left">%s</th><td>%s</td></tr>' % (
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            _('config mode'), self._cw.vreg.config.mode))
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        w(u'<tr><th align="left">%s</th><td>%s</td></tr>' % (
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            _('instance home'), self._cw.vreg.config.apphome))
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        w(u'</table>')
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        vcconf = req.vreg.config.vc_config()
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        w(u'<h3>%s</h3>' % _('versions configuration'))
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        w(u'<table>')
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        w(u'<tr><th align="left">%s</th><td>%s</td></tr>' % (
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            'CubicWeb', vcconf.get('cubicweb', _('no version information'))))
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        for cube in sorted(self._cw.vreg.config.cubes()):
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            cubeversion = vcconf.get(cube, _('no version information'))
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            w(u'<tr><th align="left">%s</th><td>%s</td></tr>' % (
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                cube, cubeversion))
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        w(u'</table>')
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        # repository information
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        repo = req.vreg.config.repository(None)
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        w(u'<h1>%s</h1>' % _('Repository'))
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        w(u'<h3>%s</h3>' % _('resources usage'))
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        w(u'<table>')
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        stats = repo.stats()
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        for element in sorted(stats):
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            w(u'<tr><th align="left">%s</th><td>%s %s</td></tr>'
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                   % (element, xml_escape(unicode(stats[element])),
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                      element.endswith('percent') and '%' or '' ))
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        w(u'</table>')
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        if req.cnx._cnxtype == 'inmemory':
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            w(u'<h3>%s</h3>' % _('opened sessions'))
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            sessions = repo._sessions.values()
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            if sessions:
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                w(u'<ul>')
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                for session in sessions:
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                    w(u'<li>%s (%s: %s)<br/>' % (
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                        xml_escape(unicode(session)),
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                        _('last usage'),
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                        strftime(dtformat, localtime(session.timestamp))))
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                    dict_to_html(w, session.data)
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                    w(u'</li>')
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                w(u'</ul>')
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            else:
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                w(u'<p>%s</p>' % _('no repository sessions found'))
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        # web server information
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        w(u'<h1>%s</h1>' % _('Web server'))
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        w(u'<table>')
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        w(u'<tr><th align="left">%s</th><td>%s</td></tr>' % (
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            _('base url'), req.base_url()))
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        w(u'<tr><th align="left">%s</th><td>%s</td></tr>' % (
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            _('data directory url'), req.datadir_url))
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        w(u'</table>')
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        from cubicweb.web.application import SESSION_MANAGER
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        sessions = SESSION_MANAGER.current_sessions()
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        w(u'<h3>%s</h3>' % _('opened web sessions'))
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        if sessions:
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            w(u'<ul>')
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            for session in sessions:
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                w(u'<li>%s (%s: %s)<br/>' % (
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                    session.sessionid,
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                    _('last usage'),
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                    strftime(dtformat, localtime(session.last_usage_time))))
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                dict_to_html(w, session.data)
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                w(u'</li>')
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            w(u'</ul>')
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        else:
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            w(u'<p>%s</p>' % _('no web sessions found'))
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class RegistryView(StartupView):
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    """display vregistry content"""
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    __regid__ = 'registry'
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    __select__ = StartupView.__select__ & match_user_groups('managers')
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    title = _('registry')
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    def call(self, **kwargs):
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        self.w(u'<h1>%s</h1>' % _("Registry's content"))
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        keys = sorted(self._cw.vreg)
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        url = self._cw.url()
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        self.w(u'<p>%s</p>\n' % ' - '.join('<a href="%s#%s">%s</a>'
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                                           % (url, key, key) for key in keys))
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        for key in keys:
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            self.w(u'<h2 id="%s">%s</h2>' % (key, key))
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            if self._cw.vreg[key]:
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                values = sorted(self._cw.vreg[key].iteritems())
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                self.wview('pyvaltable', pyvalue=[(key, xml_escape(repr(val)))
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                                                  for key, val in values])
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            else:
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                self.w(u'<p>Empty</p>\n')
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class GCView(StartupView):
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    """display garbage collector information"""
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    __regid__ = 'gc'
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    __select__ = StartupView.__select__ & match_user_groups('managers')
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    title = _('garbage')
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    def call(self, **kwargs):
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        from cubicweb._gcdebug import gc_info
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        from rql.stmts import Union
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        from cubicweb.appobject import AppObject
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        from cubicweb.rset import ResultSet
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        from cubicweb.dbapi import Connection, Cursor
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        from cubicweb.web.request import CubicWebRequestBase
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        lookupclasses = (AppObject,
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                         Union, ResultSet,
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                         Connection, Cursor,
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                         CubicWebRequestBase)
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        try:
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            from cubicweb.server.session import Session, ChildSession, InternalSession
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            lookupclasses += (InternalSession, ChildSession, Session)
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        except ImportError:
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            pass # no server part installed
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        self.w(u'<h1>%s</h1>' % _('Garbage collection information'))
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        counters, ocounters, garbage = gc_info(lookupclasses,
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                                               viewreferrersclasses=())
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        self.w(u'<h3>%s</h3>' % _('Looked up classes'))
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        values = sorted(counters.iteritems(), key=lambda x: x[1], reverse=True)
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        self.wview('pyvaltable', pyvalue=values)
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        self.w(u'<h3>%s</h3>' % _('Most referenced classes'))
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        values = sorted(ocounters.iteritems(), key=lambda x: x[1], reverse=True)
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        self.wview('pyvaltable', pyvalue=values[:self._cw.form.get('nb', 20)])
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        if garbage:
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            self.w(u'<h3>%s</h3>' % _('Unreachable objects'))
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            values = sorted(xml_escape(repr(o) for o in garbage))
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            self.wview('pyvallist', pyvalue=values)