author | Nicolas Chauvat <nicolas.chauvat@logilab.fr> |
Mon, 10 Aug 2009 15:54:28 +0200 | |
changeset 2757 | c8e28e1754f0 |
parent 2680 | 66472d85d548 |
child 2764 | 55579275a091 |
permissions | -rw-r--r-- |
0 | 1 |
"""Repository users' and internal' sessions. |
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:organization: Logilab |
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:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
1977
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big bunch of copyright / docstring update
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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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import sys |
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import threading |
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from time import time |
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R [all] logilab.common 0.44 provides only deprecated
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from logilab.common.deprecation import deprecated |
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from rql.nodes import VariableRef, Function, ETYPE_PYOBJ_MAP, etype_from_pyobj |
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from yams import BASE_TYPES |
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from cubicweb import RequestSessionMixIn, Binary, UnknownEid |
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from cubicweb.dbapi import ConnectionProperties |
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fix imports : common.utils -> utils
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from cubicweb.utils import make_uid |
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from cubicweb.server.rqlrewrite import RQLRewriter |
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ETYPE_PYOBJ_MAP[Binary] = 'Bytes' |
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25 |
def is_final(rqlst, variable, args): |
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# try to find if this is a final var or not |
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for select in rqlst.children: |
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for sol in select.solutions: |
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etype = variable.get_type(sol, args) |
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if etype is None: |
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continue |
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if etype in BASE_TYPES: |
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return True |
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return False |
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def _make_description(selected, args, solution): |
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"""return a description for a result set""" |
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description = [] |
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for term in selected: |
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description.append(term.get_type(solution, args)) |
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return description |
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class Session(RequestSessionMixIn): |
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"""tie session id, user, connections pool and other session data all |
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together |
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""" |
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def __init__(self, user, repo, cnxprops=None, _id=None): |
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super(Session, self).__init__(repo.vreg) |
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self.id = _id or make_uid(user.login.encode('UTF8')) |
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cnxprops = cnxprops or ConnectionProperties('inmemory') |
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self.user = user |
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self.repo = repo |
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self.cnxtype = cnxprops.cnxtype |
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self.creation = time() |
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self.timestamp = self.creation |
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self.is_internal_session = False |
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self.is_super_session = False |
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self.default_mode = 'read' |
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# short cut to querier .execute method |
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self._execute = repo.querier.execute |
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# shared data, used to communicate extra information between the client |
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# and the rql server |
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self.data = {} |
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# i18n initialization |
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self.set_language(cnxprops.lang) |
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# internals |
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self._threaddata = threading.local() |
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self._threads_in_transaction = set() |
293fe4b49e28
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self._closed = False |
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def __str__(self): |
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return '<%ssession %s (%s 0x%x)>' % (self.cnxtype, self.user.login, |
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self.id, id(self)) |
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[R repo session] add_relation method use in hooks
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76 |
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R [session] property for quick access to repo.schema
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77 |
@property |
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R [session] property for quick access to repo.schema
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def schema(self): |
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R [session] property for quick access to repo.schema
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return self.repo.schema |
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R [session] property for quick access to repo.schema
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80 |
|
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[R repo session] add_relation method use in hooks
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def add_relation(self, fromeid, rtype, toeid): |
6b55a2a81fd8
[R repo session] add_relation method use in hooks
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if self.is_super_session: |
6b55a2a81fd8
[R repo session] add_relation method use in hooks
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self.repo.glob_add_relation(self, fromeid, rtype, toeid) |
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84 |
return |
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85 |
self.is_super_session = True |
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86 |
try: |
6b55a2a81fd8
[R repo session] add_relation method use in hooks
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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87 |
self.repo.glob_add_relation(self, fromeid, rtype, toeid) |
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88 |
finally: |
6b55a2a81fd8
[R repo session] add_relation method use in hooks
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parents:
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89 |
self.is_super_session = False |
6b55a2a81fd8
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90 |
|
2647
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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91 |
def update_rel_cache_add(self, subject, rtype, object, symetric=False): |
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92 |
self._update_entity_rel_cache_add(subject, rtype, 'subject', object) |
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93 |
if symetric: |
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94 |
self._update_entity_rel_cache_add(object, rtype, 'subject', subject) |
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95 |
else: |
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96 |
self._update_entity_rel_cache_add(object, rtype, 'object', subject) |
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97 |
|
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98 |
def update_rel_cache_del(self, subject, rtype, object, symetric=False): |
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99 |
self._update_entity_rel_cache_del(subject, rtype, 'subject', object) |
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100 |
if symetric: |
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parents:
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101 |
self._update_entity_rel_cache_del(object, rtype, 'object', object) |
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102 |
else: |
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103 |
self._update_entity_rel_cache_del(object, rtype, 'object', subject) |
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104 |
|
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105 |
def _rel_cache(self, eid, rtype, role): |
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106 |
try: |
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|
107 |
entity = self.entity_cache(eid) |
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|
108 |
except KeyError: |
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109 |
return |
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110 |
return entity.relation_cached(rtype, role) |
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|
111 |
|
b0a2e779845c
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parents:
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|
112 |
def _update_entity_rel_cache_add(self, eid, rtype, role, targeteid): |
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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|
113 |
rcache = self._rel_cache(eid, rtype, role) |
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parents:
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|
114 |
if rcache is not None: |
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|
115 |
rset, entities = rcache |
b0a2e779845c
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|
116 |
rset.rows.append([targeteid]) |
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|
117 |
if isinstance(rset.description, list): # else description not set |
b0a2e779845c
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|
118 |
rset.description.append([self.describe(targeteid)[0]]) |
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|
119 |
rset.rowcount += 1 |
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120 |
targetentity = self.entity_from_eid(targeteid) |
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121 |
entities.append(targetentity) |
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122 |
|
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changeset
|
123 |
def _update_entity_rel_cache_del(self, eid, rtype, role, targeteid): |
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124 |
rcache = self._rel_cache(eid, rtype, role) |
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|
125 |
if rcache is not None: |
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|
126 |
rset, entities = rcache |
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|
127 |
for idx, row in enumerate(rset.rows): |
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|
128 |
if row[0] == targeteid: |
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|
129 |
break |
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130 |
else: |
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|
131 |
raise Exception('cache inconsistency for %s %s %s %s' % |
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132 |
(eid, rtype, role, targeteid)) |
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|
133 |
del rset.rows[idx] |
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134 |
if isinstance(rset.description, list): # else description not set |
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135 |
del rset.description[idx] |
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|
136 |
del entities[idx] |
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|
137 |
rset.rowcount -= 1 |
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138 |
|
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139 |
# resource accessors ###################################################### |
0 | 140 |
|
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141 |
def actual_session(self): |
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142 |
"""return the original parent session if any, else self""" |
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143 |
return self |
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144 |
|
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145 |
def system_sql(self, sql, args=None, rollback_on_failure=True): |
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146 |
"""return a sql cursor on the system database""" |
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147 |
if not sql.split(None, 1)[0].upper() == 'SELECT': |
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148 |
self.mode = 'write' |
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149 |
return self.pool.source('system').doexec(self, sql, args, |
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150 |
rollback=rollback_on_failure) |
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151 |
|
0 | 152 |
def set_language(self, language): |
153 |
"""i18n configuration for translation""" |
|
154 |
vreg = self.vreg |
|
155 |
language = language or self.user.property_value('ui.language') |
|
156 |
try: |
|
157 |
self._ = self.__ = vreg.config.translations[language] |
|
158 |
except KeyError: |
|
159 |
language = vreg.property_value('ui.language') |
|
160 |
try: |
|
161 |
self._ = self.__ = vreg.config.translations[language] |
|
162 |
except KeyError: |
|
163 |
self._ = self.__ = unicode |
|
164 |
self.lang = language |
|
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165 |
|
0 | 166 |
def change_property(self, prop, value): |
167 |
assert prop == 'lang' # this is the only one changeable property for now |
|
168 |
self.set_language(value) |
|
169 |
||
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170 |
# connection management ################################################### |
0 | 171 |
|
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172 |
def keep_pool_mode(self, mode): |
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173 |
"""set pool_mode, e.g. how the session will keep its pool: |
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174 |
|
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175 |
* if mode == 'write', the pool is freed after each ready query, but kept |
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176 |
until the transaction's end (eg commit or rollback) when a write query |
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177 |
is detected (eg INSERT/SET/DELETE queries) |
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|
178 |
|
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179 |
* if mode == 'transaction', the pool is only freed after the |
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|
180 |
transaction's end |
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|
181 |
|
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182 |
notice that a repository has a limited set of pools, and a session has to |
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183 |
wait for a free pool to run any rql query (unless it already has a pool |
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|
184 |
set). |
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|
185 |
""" |
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|
186 |
assert mode in ('transaction', 'write') |
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|
187 |
if mode == 'transaction': |
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|
188 |
self.default_mode = 'transaction' |
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189 |
else: # mode == 'write' |
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190 |
self.default_mode = 'read' |
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|
191 |
|
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192 |
def get_mode(self): |
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193 |
return getattr(self._threaddata, 'mode', self.default_mode) |
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194 |
def set_mode(self, value): |
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195 |
self._threaddata.mode = value |
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196 |
mode = property(get_mode, set_mode, |
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197 |
doc='transaction mode (read/write/transaction), resetted to' |
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198 |
' default_mode on commit / rollback') |
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199 |
|
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200 |
def get_commit_state(self): |
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201 |
return getattr(self._threaddata, 'commit_state', None) |
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202 |
def set_commit_state(self, value): |
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203 |
self._threaddata.commit_state = value |
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204 |
commit_state = property(get_commit_state, set_commit_state) |
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205 |
|
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206 |
@property |
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207 |
def pool(self): |
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208 |
"""connections pool, set according to transaction mode for each query""" |
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209 |
return getattr(self._threaddata, 'pool', None) |
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210 |
|
0 | 211 |
def set_pool(self): |
212 |
"""the session need a pool to execute some queries""" |
|
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|
213 |
if self._closed: |
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214 |
raise Exception('try to set pool on a closed session') |
0 | 215 |
if self.pool is None: |
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|
216 |
# get pool first to avoid race-condition |
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|
217 |
self._threaddata.pool = pool = self.repo._get_pool() |
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218 |
try: |
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|
219 |
pool.pool_set() |
0 | 220 |
except: |
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|
221 |
self._threaddata.pool = None |
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|
222 |
self.repo._free_pool(pool) |
0 | 223 |
raise |
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|
224 |
self._threads_in_transaction.add(threading.currentThread()) |
0 | 225 |
return self._threaddata.pool |
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|
226 |
|
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|
227 |
def reset_pool(self, ignoremode=False): |
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|
228 |
"""the session is no longer using its pool, at least for some time""" |
0 | 229 |
# pool may be none if no operation has been done since last commit |
230 |
# or rollback |
|
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|
231 |
if self.pool is not None and (ignoremode or self.mode == 'read'): |
0 | 232 |
# even in read mode, we must release the current transaction |
2055 | 233 |
pool = self.pool |
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|
234 |
try: |
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|
235 |
self._threads_in_transaction.remove(threading.currentThread()) |
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|
236 |
except KeyError: |
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|
237 |
pass |
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|
238 |
pool.pool_reset() |
0 | 239 |
self._threaddata.pool = None |
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|
240 |
# free pool once everything is done to avoid race-condition |
2055 | 241 |
self.repo._free_pool(pool) |
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|
242 |
|
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|
243 |
def _touch(self): |
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244 |
"""update latest session usage timestamp and reset mode to read""" |
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245 |
self.timestamp = time() |
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|
246 |
self.local_perm_cache.clear() |
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247 |
self._threaddata.mode = self.default_mode |
0 | 248 |
|
249 |
# shared data handling ################################################### |
|
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|
250 |
|
0 | 251 |
def get_shared_data(self, key, default=None, pop=False): |
252 |
"""return value associated to `key` in session data""" |
|
253 |
if pop: |
|
254 |
return self.data.pop(key, default) |
|
255 |
else: |
|
256 |
return self.data.get(key, default) |
|
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|
257 |
|
0 | 258 |
def set_shared_data(self, key, value, querydata=False): |
259 |
"""set value associated to `key` in session data""" |
|
260 |
if querydata: |
|
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261 |
self.transaction_data[key] = value |
0 | 262 |
else: |
263 |
self.data[key] = value |
|
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264 |
|
0 | 265 |
# request interface ####################################################### |
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266 |
|
0 | 267 |
def set_entity_cache(self, entity): |
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268 |
# XXX session level caching may be a pb with multiple repository |
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|
269 |
# instances, but 1. this is probably not the only one :$ and 2. it |
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270 |
# may be an acceptable risk. Anyway we could activate it or not |
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|
271 |
# according to a configuration option |
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|
272 |
try: |
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273 |
self.transaction_data['ecache'].setdefault(entity.eid, entity) |
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|
274 |
except KeyError: |
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|
275 |
self.transaction_data['ecache'] = ecache = {} |
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276 |
ecache[entity.eid] = entity |
0 | 277 |
|
278 |
def entity_cache(self, eid): |
|
2647
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|
279 |
try: |
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|
280 |
return self.transaction_data['ecache'][eid] |
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|
281 |
except: |
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|
282 |
raise |
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changeset
|
283 |
|
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|
284 |
def cached_entities(self): |
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|
285 |
return self.transaction_data.get('ecache', {}).values() |
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|
286 |
|
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|
287 |
def drop_entity_cache(self, eid=None): |
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|
288 |
if eid is None: |
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|
289 |
self.transaction_data.pop('ecache', None) |
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|
290 |
else: |
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|
291 |
del self.transaction_data['ecache'][eid] |
0 | 292 |
|
293 |
def base_url(self): |
|
2466
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|
294 |
url = self.repo.config['base-url'] |
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|
295 |
if not url: |
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|
296 |
try: |
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|
297 |
url = self.repo.config.default_base_url() |
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|
298 |
except AttributeError: # default_base_url() might not be available |
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|
299 |
self.warning('missing base-url definition in server config') |
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|
300 |
url = u'' |
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|
301 |
return url |
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|
302 |
|
0 | 303 |
def from_controller(self): |
304 |
"""return the id (string) of the controller issuing the request (no |
|
305 |
sense here, always return 'view') |
|
306 |
""" |
|
307 |
return 'view' |
|
1660
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changeset
|
308 |
|
0 | 309 |
def source_defs(self): |
310 |
return self.repo.source_defs() |
|
311 |
||
312 |
def describe(self, eid): |
|
313 |
"""return a tuple (type, sourceuri, extid) for the entity with id <eid>""" |
|
314 |
return self.repo.type_and_source_from_eid(eid, self) |
|
1660
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|
315 |
|
0 | 316 |
# db-api like interface ################################################### |
317 |
||
318 |
def source_from_eid(self, eid): |
|
319 |
"""return the source where the entity with id <eid> is located""" |
|
320 |
return self.repo.source_from_eid(eid, self) |
|
321 |
||
322 |
def decorate_rset(self, rset, propagate=False): |
|
323 |
rset.vreg = self.vreg |
|
324 |
rset.req = propagate and self or self.actual_session() |
|
325 |
return rset |
|
326 |
||
327 |
@property |
|
328 |
def super_session(self): |
|
329 |
try: |
|
330 |
csession = self._threaddata.childsession |
|
331 |
except AttributeError: |
|
332 |
if self.is_super_session: |
|
333 |
csession = self |
|
334 |
else: |
|
335 |
csession = ChildSession(self) |
|
336 |
self._threaddata.childsession = csession |
|
337 |
# need shared pool set |
|
338 |
self.set_pool() |
|
339 |
return csession |
|
1660
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diff
changeset
|
340 |
|
2647
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diff
changeset
|
341 |
def unsafe_execute(self, rql, kwargs=None, eid_key=None, build_descr=True, |
0 | 342 |
propagate=False): |
343 |
"""like .execute but with security checking disabled (this method is |
|
344 |
internal to the server, it's not part of the db-api) |
|
345 |
||
346 |
if `propagate` is true, the super_session will be attached to the result |
|
347 |
set instead of the parent session, hence further query done through |
|
348 |
entities fetched from this result set will bypass security as well |
|
349 |
""" |
|
350 |
return self.super_session.execute(rql, kwargs, eid_key, build_descr, |
|
351 |
propagate) |
|
352 |
||
353 |
@property |
|
354 |
def cursor(self): |
|
355 |
"""return a rql cursor""" |
|
356 |
return self |
|
1660
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|
357 |
|
0 | 358 |
def execute(self, rql, kwargs=None, eid_key=None, build_descr=True, |
359 |
propagate=False): |
|
360 |
"""db-api like method directly linked to the querier execute method |
|
361 |
||
362 |
Becare that unlike actual cursor.execute, `build_descr` default to |
|
363 |
false |
|
364 |
""" |
|
365 |
rset = self._execute(self, rql, kwargs, eid_key, build_descr) |
|
366 |
return self.decorate_rset(rset, propagate) |
|
1660
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diff
changeset
|
367 |
|
0 | 368 |
def commit(self, reset_pool=True): |
369 |
"""commit the current session's transaction""" |
|
370 |
if self.pool is None: |
|
371 |
assert not self.pending_operations |
|
2100
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changeset
|
372 |
self.transaction_data.clear() |
0 | 373 |
self._touch() |
2200
25bb65dc4559
test fixes, all server tests ok, except unittest_migractions (due to inter-tests-side-effects...)
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parents:
2190
diff
changeset
|
374 |
self.debug('commit session %s done (no db activity)', self.id) |
0 | 375 |
return |
376 |
if self.commit_state: |
|
377 |
return |
|
378 |
# on rollback, an operation should have the following state |
|
379 |
# information: |
|
380 |
# - processed by the precommit/commit event or not |
|
381 |
# - if processed, is it the failed operation |
|
382 |
try: |
|
383 |
for trstate in ('precommit', 'commit'): |
|
384 |
processed = [] |
|
385 |
self.commit_state = trstate |
|
386 |
try: |
|
387 |
while self.pending_operations: |
|
388 |
operation = self.pending_operations.pop(0) |
|
389 |
operation.processed = trstate |
|
390 |
processed.append(operation) |
|
391 |
operation.handle_event('%s_event' % trstate) |
|
392 |
self.pending_operations[:] = processed |
|
393 |
self.debug('%s session %s done', trstate, self.id) |
|
394 |
except: |
|
395 |
self.exception('error while %sing', trstate) |
|
396 |
operation.failed = True |
|
397 |
for operation in processed: |
|
398 |
operation.handle_event('revert%s_event' % trstate) |
|
399 |
self.rollback(reset_pool) |
|
400 |
raise |
|
401 |
self.pool.commit() |
|
402 |
finally: |
|
403 |
self._touch() |
|
404 |
self.commit_state = None |
|
405 |
self.pending_operations[:] = [] |
|
2100
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
406 |
self.transaction_data.clear() |
0 | 407 |
if reset_pool: |
2570
80a996bb536d
[repo session] ability to ask session to keep it's pool set even when only read queries are done, necessary at least during migration
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
408 |
self.reset_pool(ignoremode=True) |
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diff
changeset
|
409 |
|
0 | 410 |
def rollback(self, reset_pool=True): |
411 |
"""rollback the current session's transaction""" |
|
412 |
if self.pool is None: |
|
413 |
assert not self.pending_operations |
|
2100
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simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
414 |
self.transaction_data.clear() |
0 | 415 |
self._touch() |
2200
25bb65dc4559
test fixes, all server tests ok, except unittest_migractions (due to inter-tests-side-effects...)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2190
diff
changeset
|
416 |
self.debug('rollback session %s done (no db activity)', self.id) |
0 | 417 |
return |
418 |
try: |
|
419 |
while self.pending_operations: |
|
420 |
try: |
|
421 |
operation = self.pending_operations.pop(0) |
|
422 |
operation.handle_event('rollback_event') |
|
423 |
except: |
|
424 |
self.critical('rollback error', exc_info=sys.exc_info()) |
|
425 |
continue |
|
426 |
self.pool.rollback() |
|
2188
3a57c8173290
* deprecate session.entity method
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
427 |
self.debug('rollback for session %s done', self.id) |
0 | 428 |
finally: |
429 |
self._touch() |
|
430 |
self.pending_operations[:] = [] |
|
2100
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simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
431 |
self.transaction_data.clear() |
0 | 432 |
if reset_pool: |
2570
80a996bb536d
[repo session] ability to ask session to keep it's pool set even when only read queries are done, necessary at least during migration
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2319
diff
changeset
|
433 |
self.reset_pool(ignoremode=True) |
1660
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delete-trailing-whitespaces, missing import
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diff
changeset
|
434 |
|
0 | 435 |
def close(self): |
436 |
"""do not close pool on session close, since they are shared now""" |
|
1880
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
437 |
self._closed = True |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
438 |
# copy since _threads_in_transaction maybe modified while waiting |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
439 |
for thread in self._threads_in_transaction.copy(): |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
440 |
if thread is threading.currentThread(): |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
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diff
changeset
|
441 |
continue |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
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parents:
1660
diff
changeset
|
442 |
self.info('waiting for thread %s', thread) |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
443 |
# do this loop/break instead of a simple join(10) in case thread is |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
444 |
# the main thread (in which case it will be removed from |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
445 |
# self._threads_in_transaction but still be alive...) |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
446 |
for i in xrange(10): |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
447 |
thread.join(1) |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
448 |
if not (thread.isAlive() and |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
449 |
thread in self._threads_in_transaction): |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
450 |
break |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
451 |
else: |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
452 |
self.error('thread %s still alive after 10 seconds, will close ' |
293fe4b49e28
two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
1660
diff
changeset
|
453 |
'session anyway', thread) |
0 | 454 |
self.rollback() |
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
455 |
|
0 | 456 |
# transaction data/operations management ################################## |
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
457 |
|
2100
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
458 |
@property |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
459 |
def transaction_data(self): |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
460 |
try: |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
461 |
return self._threaddata.transaction_data |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
462 |
except AttributeError: |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
463 |
self._threaddata.transaction_data = {} |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
464 |
return self._threaddata.transaction_data |
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
465 |
|
2100
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
466 |
@property |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
467 |
def pending_operations(self): |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
468 |
try: |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
469 |
return self._threaddata.pending_operations |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
470 |
except AttributeError: |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
471 |
self._threaddata.pending_operations = [] |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
472 |
return self._threaddata.pending_operations |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
473 |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
474 |
|
0 | 475 |
def add_operation(self, operation, index=None): |
476 |
"""add an observer""" |
|
477 |
assert self.commit_state != 'commit' |
|
478 |
if index is not None: |
|
479 |
self.pending_operations.insert(index, operation) |
|
480 |
else: |
|
481 |
self.pending_operations.append(operation) |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
482 |
|
0 | 483 |
# querier helpers ######################################################### |
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
484 |
|
2100
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
485 |
@property |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
486 |
def rql_rewriter(self): |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
487 |
try: |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
488 |
return self._threaddata._rewriter |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
489 |
except AttributeError: |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
490 |
self._threaddata._rewriter = RQLRewriter(self.repo.querier, self) |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
491 |
return self._threaddata._rewriter |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
492 |
|
0 | 493 |
def build_description(self, rqlst, args, result): |
494 |
"""build a description for a given result""" |
|
495 |
if len(rqlst.children) == 1 and len(rqlst.children[0].solutions) == 1: |
|
496 |
# easy, all lines are identical |
|
497 |
selected = rqlst.children[0].selection |
|
498 |
solution = rqlst.children[0].solutions[0] |
|
499 |
description = _make_description(selected, args, solution) |
|
500 |
return [tuple(description)] * len(result) |
|
501 |
# hard, delegate the work :o) |
|
502 |
return self.manual_build_descr(rqlst, args, result) |
|
503 |
||
504 |
def manual_build_descr(self, rqlst, args, result): |
|
505 |
"""build a description for a given result by analysing each row |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
506 |
|
0 | 507 |
XXX could probably be done more efficiently during execution of query |
508 |
""" |
|
509 |
# not so easy, looks for variable which changes from one solution |
|
510 |
# to another |
|
511 |
unstables = rqlst.get_variable_variables() |
|
512 |
basedescription = [] |
|
513 |
todetermine = [] |
|
514 |
selected = rqlst.children[0].selection # sample selection |
|
515 |
for i, term in enumerate(selected): |
|
516 |
if isinstance(term, Function) and term.descr().rtype is not None: |
|
517 |
basedescription.append(term.get_type(term.descr().rtype, args)) |
|
518 |
continue |
|
519 |
for vref in term.get_nodes(VariableRef): |
|
520 |
if vref.name in unstables: |
|
521 |
basedescription.append(None) |
|
522 |
todetermine.append( (i, is_final(rqlst, vref.variable, args)) ) |
|
523 |
break |
|
524 |
else: |
|
525 |
# sample etype |
|
526 |
etype = rqlst.children[0].solutions[0] |
|
527 |
basedescription.append(term.get_type(etype, args)) |
|
528 |
if not todetermine: |
|
529 |
return [tuple(basedescription)] * len(result) |
|
530 |
return self._build_descr(result, basedescription, todetermine) |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
531 |
|
0 | 532 |
def _build_descr(self, result, basedescription, todetermine): |
533 |
description = [] |
|
534 |
etype_from_eid = self.describe |
|
535 |
for row in result: |
|
536 |
row_descr = basedescription |
|
537 |
for index, isfinal in todetermine: |
|
538 |
value = row[index] |
|
539 |
if value is None: |
|
540 |
# None value inserted by an outer join, no type |
|
541 |
row_descr[index] = None |
|
542 |
continue |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
543 |
if isfinal: |
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
544 |
row_descr[index] = etype_from_pyobj(value) |
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
545 |
else: |
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
546 |
try: |
1169
52058e8a3af9
somewhat handle corrupted database when manually building a database
sylvain.thenault@logilab.fr
parents:
974
diff
changeset
|
547 |
row_descr[index] = etype_from_eid(value)[0] |
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
548 |
except UnknownEid: |
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
549 |
self.critical('wrong eid %s in repository, should check database' % value) |
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
550 |
row_descr[index] = row[index] = None |
0 | 551 |
description.append(tuple(row_descr)) |
552 |
return description |
|
553 |
||
2650
18aec79ec3a3
R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2647
diff
changeset
|
554 |
@deprecated("use vreg['etypes'].etype_class(etype)") |
18aec79ec3a3
R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2647
diff
changeset
|
555 |
def etype_class(self, etype): |
18aec79ec3a3
R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2647
diff
changeset
|
556 |
"""return an entity class for the given entity type""" |
18aec79ec3a3
R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2647
diff
changeset
|
557 |
return self.vreg['etypes'].etype_class(etype) |
18aec79ec3a3
R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2647
diff
changeset
|
558 |
|
2613
5e19c2bb370e
R [all] logilab.common 0.44 provides only deprecated
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
2466
diff
changeset
|
559 |
@deprecated('use direct access to session.transaction_data') |
2182
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
560 |
def query_data(self, key, default=None, setdefault=False, pop=False): |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
561 |
if setdefault: |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
562 |
assert not pop |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
563 |
return self.transaction_data.setdefault(key, default) |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
564 |
if pop: |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
565 |
return self.transaction_data.pop(key, default) |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
566 |
else: |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
567 |
return self.transaction_data.get(key, default) |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
568 |
|
2613
5e19c2bb370e
R [all] logilab.common 0.44 provides only deprecated
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
2466
diff
changeset
|
569 |
@deprecated('use entity_from_eid(eid, etype=None)') |
2182
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
570 |
def entity(self, eid): |
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
571 |
"""return a result set for the given eid""" |
2680
66472d85d548
[R] use req.entity_from_eid
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2650
diff
changeset
|
572 |
return self.entity_from_eid(eid) |
2182
488099333160
mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2100
diff
changeset
|
573 |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
574 |
|
0 | 575 |
class ChildSession(Session): |
576 |
"""child (or internal) session are used to hijack the security system |
|
577 |
""" |
|
578 |
cnxtype = 'inmemory' |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
579 |
|
0 | 580 |
def __init__(self, parent_session): |
581 |
self.id = None |
|
582 |
self.is_internal_session = False |
|
583 |
self.is_super_session = True |
|
584 |
# session which has created this one |
|
585 |
self.parent_session = parent_session |
|
586 |
self.user = InternalManager() |
|
587 |
self.repo = parent_session.repo |
|
588 |
self.vreg = parent_session.vreg |
|
589 |
self.data = parent_session.data |
|
590 |
self.encoding = parent_session.encoding |
|
591 |
self.lang = parent_session.lang |
|
592 |
self._ = self.__ = parent_session._ |
|
593 |
# short cut to querier .execute method |
|
594 |
self._execute = self.repo.querier.execute |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
595 |
|
0 | 596 |
@property |
597 |
def super_session(self): |
|
598 |
return self |
|
599 |
||
600 |
def get_mode(self): |
|
601 |
return self.parent_session.mode |
|
602 |
def set_mode(self, value): |
|
603 |
self.parent_session.set_mode(value) |
|
604 |
mode = property(get_mode, set_mode) |
|
605 |
||
606 |
def get_commit_state(self): |
|
607 |
return self.parent_session.commit_state |
|
608 |
def set_commit_state(self, value): |
|
609 |
self.parent_session.set_commit_state(value) |
|
610 |
commit_state = property(get_commit_state, set_commit_state) |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
611 |
|
0 | 612 |
@property |
613 |
def pool(self): |
|
614 |
return self.parent_session.pool |
|
615 |
@property |
|
616 |
def pending_operations(self): |
|
617 |
return self.parent_session.pending_operations |
|
618 |
@property |
|
2100
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
619 |
def transaction_data(self): |
89b825cdec74
simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
2063
diff
changeset
|
620 |
return self.parent_session.transaction_data |
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
621 |
|
0 | 622 |
def set_pool(self): |
623 |
"""the session need a pool to execute some queries""" |
|
624 |
self.parent_session.set_pool() |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
625 |
|
0 | 626 |
def reset_pool(self): |
627 |
"""the session has no longer using its pool, at least for some time |
|
628 |
""" |
|
629 |
self.parent_session.reset_pool() |
|
630 |
||
631 |
def actual_session(self): |
|
632 |
"""return the original parent session if any, else self""" |
|
633 |
return self.parent_session |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
634 |
|
0 | 635 |
def commit(self, reset_pool=True): |
636 |
"""commit the current session's transaction""" |
|
637 |
self.parent_session.commit(reset_pool) |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
638 |
|
0 | 639 |
def rollback(self, reset_pool=True): |
640 |
"""rollback the current session's transaction""" |
|
641 |
self.parent_session.rollback(reset_pool) |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
642 |
|
0 | 643 |
def close(self): |
644 |
"""do not close pool on session close, since they are shared now""" |
|
645 |
self.rollback() |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
646 |
|
0 | 647 |
def user_data(self): |
648 |
"""returns a dictionnary with this user's information""" |
|
649 |
return self.parent_session.user_data() |
|
650 |
||
651 |
||
652 |
class InternalSession(Session): |
|
653 |
"""special session created internaly by the repository""" |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
654 |
|
0 | 655 |
def __init__(self, repo, cnxprops=None): |
656 |
super(InternalSession, self).__init__(_IMANAGER, repo, cnxprops, |
|
657 |
_id='internal') |
|
658 |
self.cnxtype = 'inmemory' |
|
659 |
self.is_internal_session = True |
|
660 |
self.is_super_session = True |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
661 |
|
0 | 662 |
@property |
663 |
def super_session(self): |
|
664 |
return self |
|
665 |
||
666 |
||
667 |
class InternalManager(object): |
|
668 |
"""a manager user with all access rights used internally for task such as |
|
669 |
bootstrapping the repository or creating regular users according to |
|
670 |
repository content |
|
671 |
""" |
|
672 |
def __init__(self): |
|
673 |
self.eid = -1 |
|
674 |
self.login = u'__internal_manager__' |
|
675 |
self.properties = {} |
|
676 |
||
677 |
def matching_groups(self, groups): |
|
678 |
return 1 |
|
679 |
||
680 |
def is_in_group(self, group): |
|
681 |
return True |
|
682 |
||
683 |
def owns(self, eid): |
|
684 |
return True |
|
1660
d1030dd9730b
delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents:
1263
diff
changeset
|
685 |
|
0 | 686 |
def has_permission(self, pname, contexteid=None): |
687 |
return True |
|
688 |
||
689 |
def property_value(self, key): |
|
690 |
if key == 'ui.language': |
|
691 |
return 'en' |
|
692 |
return None |
|
693 |
||
1132 | 694 |
_IMANAGER = InternalManager() |
0 | 695 |
|
696 |
from logging import getLogger |
|
697 |
from cubicweb import set_log_methods |
|
698 |
set_log_methods(Session, getLogger('cubicweb.session')) |