def init(self, db_name):
self.models = {} # model name/model instance mapping
self._sql_constraints = set()
self._init = True
self._assertion_report = odoo.tests.runner.OdooTestResult()
self._fields_by_model = None
self._ordinary_tables = None
self._constraint_queue = deque()
self.__cache = LRU(8192)
# modules fully loaded (maintained during init phase by `loading` module)
self._init_modules = set()
self.updated_modules = [] # installed/updated modules
self.loaded_xmlids = set()
self.db_name = db_name
self._db = odoo.sql_db.db_connect(db_name)
# cursor for test mode; None means "normal" mode
self.test_cr = None
self.test_lock = None
# Indicates that the registry is
self.loaded = False # whether all modules are loaded
self.ready = False # whether everything is set up
# field dependencies
self.field_depends = Collector()
self.field_depends_context = Collector()
self.field_inverses = Collector()
# Inter-process signaling:
# The `base_registry_signaling` sequence indicates the whole registry
# must be reloaded.
# The `base_cache_signaling sequence` indicates all caches must be
# invalidated (i.e. cleared).
self.registry_sequence = None
self.cache_sequence = None
# Flags indicating invalidation of the registry or the cache.
self.registry_invalidated = False
self.cache_invalidated = False
with closing(self.cursor()) as cr:
self.has_unaccent = odoo.modules.db.has_unaccent(cr)
self.has_trigram = odoo.modules.db.has_trigram(cr)
def init(self, db_name):
self.models = {} # model name/model instance mapping
self._sql_error = {}
self._init = True
self._init_parent = {}
self._assertion_report = assertion_report.assertion_report()
self._fields_by_model = None
self._post_init_queue = deque()
# modules fully loaded (maintained during init phase by `loading` module)
self._init_modules = set()
self.updated_modules = [] # installed/updated modules
self.db_name = db_name
self._db = odoo.sql_db.db_connect(db_name)
# special cursor for test mode; None means "normal" mode
self.test_cr = None
# Indicates that the registry is
self.ready = False
# Inter-process signaling (used only when odoo.multi_process is True):
# The `base_registry_signaling` sequence indicates the whole registry
# must be reloaded.
# The `base_cache_signaling sequence` indicates all caches must be
# invalidated (i.e. cleared).
self.registry_sequence = None
self.cache_sequence = None
self.cache = LRU(8192)
# Flag indicating if at least one model cache has been cleared.
# Useful only in a multi-process context.
self.cache_cleared = False
with closing(self.cursor()) as cr:
has_unaccent = odoo.modules.db.has_unaccent(cr)
if odoo.tools.config['unaccent'] and not has_unaccent:
_logger.warning(
"The option --unaccent was given but no unaccent() function was found in database."
)
self.has_unaccent = odoo.tools.config['unaccent'] and has_unaccent
def registries(cls):
""" A mapping from database names to registries. """
size = config.get('registry_lru_size', None)
if not size:
# Size the LRU depending of the memory limits
if os.name != 'posix':
# cannot specify the memory limit soft on windows...
size = 42
else:
# A registry takes 10MB of memory on average, so we reserve
# 10Mb (registry) + 5Mb (working memory) per registry
avgsz = 15 * 1024 * 1024
size = int(config['limit_memory_soft'] / avgsz)
return LRU(size)
def init(self, db_name):
self.models = {} # model name/model instance mapping
self._sql_error = {}
self._init = True
self._init_parent = {}
self._assertion_report = assertion_report.assertion_report()
self._fields_by_model = None
self._post_init_queue = deque()
# modules fully loaded (maintained during init phase by `loading` module)
self._init_modules = set()
self.updated_modules = [] # installed/updated modules
self.db_name = db_name
self._db = odoo.sql_db.db_connect(db_name)
# special cursor for test mode; None means "normal" mode
self.test_cr = None
# Indicates that the registry is
self.ready = False
# Inter-process signaling (used only when odoo.multi_process is True):
# The `base_registry_signaling` sequence indicates the whole registry
# must be reloaded.
# The `base_cache_signaling sequence` indicates all caches must be
# invalidated (i.e. cleared).
self.registry_sequence = None
self.cache_sequence = None
self.cache = LRU(8192)
# Flag indicating if at least one model cache has been cleared.
# Useful only in a multi-process context.
self.cache_cleared = False
with closing(self.cursor()) as cr:
has_unaccent = odoo.modules.db.has_unaccent(cr)
if odoo.tools.config['unaccent'] and not has_unaccent:
_logger.warning("The option --unaccent was given but no unaccent() function was found in database.")
self.has_unaccent = odoo.tools.config['unaccent'] and has_unaccent
class Registry(Mapping):
""" Model registry for a particular database.
The registry is essentially a mapping between model names and model classes.
There is one registry instance per database.
"""
_lock = threading.RLock()
_saved_lock = None
@lazy_classproperty
def registries(cls):
""" A mapping from database names to registries. """
size = config.get('registry_lru_size', None)
if not size:
# Size the LRU depending of the memory limits
if os.name != 'posix':
# cannot specify the memory limit soft on windows...
size = 42
else:
# A registry takes 10MB of memory on average, so we reserve
# 10Mb (registry) + 5Mb (working memory) per registry
avgsz = 15 * 1024 * 1024
size = int(config['limit_memory_soft'] / avgsz)
return LRU(size)
def __new__(cls, db_name):
""" Return the registry for the given database name."""
with cls._lock:
try:
return cls.registries[db_name]
except KeyError:
return cls.new(db_name)
finally:
# set db tracker - cleaned up at the WSGI dispatching phase in
# odoo.service.wsgi_server.application
threading.current_thread().dbname = db_name
@classmethod
def new(cls, db_name, force_demo=False, status=None, update_module=False):
""" Create and return a new registry for the given database name. """
t0 = time.time()
with cls._lock:
registry = object.__new__(cls)
registry.init(db_name)
# Initializing a registry will call general code which will in
# turn call Registry() to obtain the registry being initialized.
# Make it available in the registries dictionary then remove it
# if an exception is raised.
cls.delete(db_name)
cls.registries[db_name] = registry # pylint: disable=unsupported-assignment-operation
try:
registry.setup_signaling()
# This should be a method on Registry
try:
odoo.modules.load_modules(registry, force_demo, status,
update_module)
except Exception:
odoo.modules.reset_modules_state(db_name)
raise
except Exception:
_logger.error('Failed to load registry')
del cls.registries[db_name] # pylint: disable=unsupported-delete-operation
raise
# load_modules() above can replace the registry by calling
# indirectly new() again (when modules have to be uninstalled).
# Yeah, crazy.
registry = cls.registries[db_name] # pylint: disable=unsubscriptable-object
registry._init = False
registry.ready = True
registry.registry_invalidated = bool(update_module)
registry.new = registry.init = registry.registries = None
_logger.info("Registry loaded in %.3fs", time.time() - t0)
return registry
def init(self, db_name):
self.models = {} # model name/model instance mapping
self._sql_constraints = set()
self._init = True
self._assertion_report = odoo.tests.runner.OdooTestResult()
self._fields_by_model = None
self._ordinary_tables = None
self._constraint_queue = deque()
self.__cache = LRU(8192)
# modules fully loaded (maintained during init phase by `loading` module)
self._init_modules = set()
self.updated_modules = [] # installed/updated modules
self.loaded_xmlids = set()
self.db_name = db_name
self._db = odoo.sql_db.db_connect(db_name)
# cursor for test mode; None means "normal" mode
self.test_cr = None
self.test_lock = None
# Indicates that the registry is
self.loaded = False # whether all modules are loaded
self.ready = False # whether everything is set up
# field dependencies
self.field_depends = Collector()
self.field_depends_context = Collector()
self.field_inverses = Collector()
# Inter-process signaling:
# The `base_registry_signaling` sequence indicates the whole registry
# must be reloaded.
# The `base_cache_signaling sequence` indicates all caches must be
# invalidated (i.e. cleared).
self.registry_sequence = None
self.cache_sequence = None
# Flags indicating invalidation of the registry or the cache.
self._invalidation_flags = threading.local()
with closing(self.cursor()) as cr:
self.has_unaccent = odoo.modules.db.has_unaccent(cr)
self.has_trigram = odoo.modules.db.has_trigram(cr)
@classmethod
def delete(cls, db_name):
""" Delete the registry linked to a given database. """
with cls._lock:
if db_name in cls.registries:
del cls.registries[db_name]
@classmethod
def delete_all(cls):
""" Delete all the registries. """
with cls._lock:
cls.registries.clear()
#
# Mapping abstract methods implementation
# => mixin provides methods keys, items, values, get, __eq__, and __ne__
#
def __len__(self):
""" Return the size of the registry. """
return len(self.models)
def __iter__(self):
""" Return an iterator over all model names. """
return iter(self.models)
def __getitem__(self, model_name):
""" Return the model with the given name or raise KeyError if it doesn't exist."""
return self.models[model_name]
def __call__(self, model_name):
""" Same as ``self[model_name]``. """
return self.models[model_name]
def __setitem__(self, model_name, model):
""" Add or replace a model in the registry."""
self.models[model_name] = model
def __delitem__(self, model_name):
""" Remove a (custom) model from the registry. """
del self.models[model_name]
# the custom model can inherit from mixins ('mail.thread', ...)
for Model in self.models.values():
Model._inherit_children.discard(model_name)
def descendants(self, model_names, *kinds):
""" Return the models corresponding to ``model_names`` and all those
that inherit/inherits from them.
"""
assert all(kind in ('_inherit', '_inherits') for kind in kinds)
funcs = [attrgetter(kind + '_children') for kind in kinds]
models = OrderedSet()
queue = deque(model_names)
while queue:
model = self[queue.popleft()]
models.add(model._name)
for func in funcs:
queue.extend(func(model))
return models
def load(self, cr, module):
""" Load a given module in the registry, and return the names of the
modified models.
At the Python level, the modules are already loaded, but not yet on a
per-registry level. This method populates a registry with the given
modules, i.e. it instantiates all the classes of a the given module
and registers them in the registry.
"""
from .. import models
# clear cache to ensure consistency, but do not signal it
self.__cache.clear()
lazy_property.reset_all(self)
# Instantiate registered classes (via the MetaModel automatic discovery
# or via explicit constructor call), and add them to the pool.
model_names = []
for cls in models.MetaModel.module_to_models.get(module.name, []):
# models register themselves in self.models
model = cls._build_model(self, cr)
model_names.append(model._name)
return self.descendants(model_names, '_inherit', '_inherits')
def setup_models(self, cr):
""" Complete the setup of models.
This must be called after loading modules and before using the ORM.
"""
env = odoo.api.Environment(cr, SUPERUSER_ID, {})
# Uninstall registry hooks. Because of the condition, this only happens
# on a fully loaded registry, and not on a registry being loaded.
if self.ready:
for model in env.values():
model._unregister_hook()
# clear cache to ensure consistency, but do not signal it
self.__cache.clear()
lazy_property.reset_all(self)
self.registry_invalidated = True
if env.all.tocompute:
_logger.error(
"Remaining fields to compute before setting up registry: %s",
env.all.tocompute,
stack_info=True,
)
# we must setup ir.model before adding manual fields because _add_manual_models may
# depend on behavior that is implemented through overrides, such as is_mail_thread which
# is implemented through an override to env['ir.model']._instanciate
env['ir.model']._prepare_setup()
# add manual models
if self._init_modules:
env['ir.model']._add_manual_models()
# prepare the setup on all models
models = list(env.values())
for model in models:
model._prepare_setup()
self.field_depends.clear()
self.field_depends_context.clear()
self.field_inverses.clear()
# do the actual setup
for model in models:
model._setup_base()
self._m2m = defaultdict(list)
for model in models:
model._setup_fields()
del self._m2m
for model in models:
model._setup_complete()
# determine field_depends and field_depends_context
for model in models:
for field in model._fields.values():
depends, depends_context = field.get_depends(model)
self.field_depends[field] = tuple(depends)
self.field_depends_context[field] = tuple(depends_context)
# Reinstall registry hooks. Because of the condition, this only happens
# on a fully loaded registry, and not on a registry being loaded.
if self.ready:
for model in env.values():
model._register_hook()
env['base'].flush()
@lazy_property
def field_computed(self):
""" Return a dict mapping each field to the fields computed by the same method. """
computed = {}
for model_name, Model in self.models.items():
groups = defaultdict(list)
for field in Model._fields.values():
if field.compute:
computed[field] = group = groups[field.compute]
group.append(field)
for fields in groups.values():
if len({field.compute_sudo for field in fields}) > 1:
_logger.warning(
"%s: inconsistent 'compute_sudo' for computed fields: %s",
model_name, ", ".join(field.name for field in fields))
if len({field.precompute for field in fields}) > 1:
_logger.warning(
"%s: inconsistent 'precompute' for computed fields: %s",
model_name, ", ".join(field.name for field in fields))
return computed
@lazy_property
def field_triggers(self):
# determine field dependencies
dependencies = {}
for Model in self.models.values():
if Model._abstract:
continue
for field in Model._fields.values():
# dependencies of custom fields may not exist; ignore that case
exceptions = (Exception, ) if field.base_field.manual else ()
with ignore(*exceptions):
dependencies[field] = OrderedSet(
field.resolve_depends(self))
# determine transitive dependencies
def transitive_dependencies(field, seen=[]):
if field in seen:
return
for seq1 in dependencies.get(field, ()):
yield seq1
for seq2 in transitive_dependencies(seq1[-1], seen + [field]):
yield concat(seq1[:-1], seq2)
def concat(seq1, seq2):
if seq1 and seq2:
f1, f2 = seq1[-1], seq2[0]
if f1.type == 'one2many' and f2.type == 'many2one' and \
f1.model_name == f2.comodel_name and f1.inverse_name == f2.name:
return concat(seq1[:-1], seq2[1:])
return seq1 + seq2
# determine triggers based on transitive dependencies
triggers = {}
for field in dependencies:
for path in transitive_dependencies(field):
if path:
tree = triggers
for label in reversed(path):
tree = tree.setdefault(label, {})
tree.setdefault(None, OrderedSet()).add(field)
return triggers
def post_init(self, func, *args, **kwargs):
""" Register a function to call at the end of :meth:`~.init_models`. """
self._post_init_queue.append(partial(func, *args, **kwargs))
def post_constraint(self, func, *args, **kwargs):
""" Call the given function, and delay it if it fails during an upgrade. """
try:
if (func, args, kwargs) not in self._constraint_queue:
# Module A may try to apply a constraint and fail but another module B inheriting
# from Module A may try to reapply the same constraint and succeed, however the
# constraint would already be in the _constraint_queue and would be executed again
# at the end of the registry cycle, this would fail (already-existing constraint)
# and generate an error, therefore a constraint should only be applied if it's
# not already marked as "to be applied".
func(*args, **kwargs)
except Exception as e:
if self._is_install:
_schema.error(*e.args)
else:
_schema.info(*e.args)
self._constraint_queue.append((func, args, kwargs))
def finalize_constraints(self):
""" Call the delayed functions from above. """
while self._constraint_queue:
func, args, kwargs = self._constraint_queue.popleft()
try:
func(*args, **kwargs)
except Exception as e:
# warn only, this is not a deployment showstopper, and
# can sometimes be a transient error
_schema.warning(*e.args)
def init_models(self, cr, model_names, context, install=True):
""" Initialize a list of models (given by their name). Call methods
``_auto_init`` and ``init`` on each model to create or update the
database tables supporting the models.
The ``context`` may contain the following items:
- ``module``: the name of the module being installed/updated, if any;
- ``update_custom_fields``: whether custom fields should be updated.
"""
if not model_names:
return
if 'module' in context:
_logger.info('module %s: creating or updating database tables',
context['module'])
elif context.get('models_to_check', False):
_logger.info("verifying fields for every extended model")
env = odoo.api.Environment(cr, SUPERUSER_ID, context)
models = [env[model_name] for model_name in model_names]
try:
self._post_init_queue = deque()
self._foreign_keys = {}
self._is_install = install
for model in models:
model._auto_init()
model.init()
env['ir.model']._reflect_models(model_names)
env['ir.model.fields']._reflect_fields(model_names)
env['ir.model.fields.selection']._reflect_selections(model_names)
env['ir.model.constraint']._reflect_constraints(model_names)
self._ordinary_tables = None
while self._post_init_queue:
func = self._post_init_queue.popleft()
func()
self.check_indexes(cr, model_names)
self.check_foreign_keys(cr)
env['base'].flush()
# make sure all tables are present
self.check_tables_exist(cr)
finally:
del self._post_init_queue
del self._foreign_keys
del self._is_install
def check_indexes(self, cr, model_names):
""" Create or drop column indexes for the given models. """
expected = [("%s_%s_index" % (Model._table, field.name), Model._table,
field.name, field.index) for model_name in model_names
for Model in [self.models[model_name]]
if Model._auto and not Model._abstract
for field in Model._fields.values()
if field.column_type and field.store]
if not expected:
return
cr.execute("SELECT indexname FROM pg_indexes WHERE indexname IN %s",
[tuple(row[0] for row in expected)])
existing = {row[0] for row in cr.fetchall()}
for indexname, tablename, columnname, index in expected:
if index and indexname not in existing:
try:
with cr.savepoint(flush=False):
sql.create_index(cr, indexname, tablename,
['"%s"' % columnname])
except psycopg2.OperationalError:
_schema.error("Unable to add index for %s", self)
elif not index and indexname in existing:
_schema.info("Keep unexpected index %s on table %s", indexname,
tablename)
def add_foreign_key(self,
table1,
column1,
table2,
column2,
ondelete,
model,
module,
force=True):
""" Specify an expected foreign key. """
key = (table1, column1)
val = (table2, column2, ondelete, model, module)
if force:
self._foreign_keys[key] = val
else:
self._foreign_keys.setdefault(key, val)
def check_foreign_keys(self, cr):
""" Create or update the expected foreign keys. """
if not self._foreign_keys:
return
# determine existing foreign keys on the tables
query = """
SELECT fk.conname, c1.relname, a1.attname, c2.relname, a2.attname, fk.confdeltype
FROM pg_constraint AS fk
JOIN pg_class AS c1 ON fk.conrelid = c1.oid
JOIN pg_class AS c2 ON fk.confrelid = c2.oid
JOIN pg_attribute AS a1 ON a1.attrelid = c1.oid AND fk.conkey[1] = a1.attnum
JOIN pg_attribute AS a2 ON a2.attrelid = c2.oid AND fk.confkey[1] = a2.attnum
WHERE fk.contype = 'f' AND c1.relname IN %s
"""
cr.execute(query,
[tuple({table
for table, column in self._foreign_keys})])
existing = {(table1, column1): (name, table2, column2, deltype)
for name, table1, column1, table2, column2, deltype in
cr.fetchall()}
# create or update foreign keys
for key, val in self._foreign_keys.items():
table1, column1 = key
table2, column2, ondelete, model, module = val
deltype = sql._CONFDELTYPES[ondelete.upper()]
spec = existing.get(key)
if spec is None:
sql.add_foreign_key(cr, table1, column1, table2, column2,
ondelete)
conname = sql.get_foreign_keys(cr, table1, column1, table2,
column2, ondelete)[0]
model.env['ir.model.constraint']._reflect_constraint(
model, conname, 'f', None, module)
elif (spec[1], spec[2], spec[3]) != (table2, column2, deltype):
sql.drop_constraint(cr, table1, spec[0])
sql.add_foreign_key(cr, table1, column1, table2, column2,
ondelete)
conname = sql.get_foreign_keys(cr, table1, column1, table2,
column2, ondelete)[0]
model.env['ir.model.constraint']._reflect_constraint(
model, conname, 'f', None, module)
def check_tables_exist(self, cr):
"""
Verify that all tables are present and try to initialize those that are missing.
"""
env = odoo.api.Environment(cr, SUPERUSER_ID, {})
table2model = {
model._table: name
for name, model in env.items()
if not model._abstract and model.__class__._table_query is None
}
missing_tables = set(table2model).difference(
existing_tables(cr, table2model))
if missing_tables:
missing = {table2model[table] for table in missing_tables}
_logger.info("Models have no table: %s.", ", ".join(missing))
# recreate missing tables
for name in missing:
_logger.info("Recreate table of model %s.", name)
env[name].init()
env['base'].flush()
# check again, and log errors if tables are still missing
missing_tables = set(table2model).difference(
existing_tables(cr, table2model))
for table in missing_tables:
_logger.error("Model %s has no table.", table2model[table])
def _clear_cache(self):
""" Clear the cache and mark it as invalidated. """
self.__cache.clear()
self.cache_invalidated = True
def clear_caches(self):
""" Clear the caches associated to methods decorated with
``tools.ormcache`` or ``tools.ormcache_multi`` for all the models.
"""
for model in self.models.values():
model.clear_caches()
def is_an_ordinary_table(self, model):
""" Return whether the given model has an ordinary table. """
if self._ordinary_tables is None:
cr = model.env.cr
query = """
SELECT c.relname
FROM pg_class c
JOIN pg_namespace n ON (n.oid = c.relnamespace)
WHERE c.relname IN %s
AND c.relkind = 'r'
AND n.nspname = 'public'
"""
tables = tuple(m._table for m in self.models.values())
cr.execute(query, [tables])
self._ordinary_tables = {row[0] for row in cr.fetchall()}
return model._table in self._ordinary_tables
@property
def registry_invalidated(self):
""" Determine whether the current thread has modified the registry. """
return getattr(self._invalidation_flags, 'registry', False)
@registry_invalidated.setter
def registry_invalidated(self, value):
self._invalidation_flags.registry = value
@property
def cache_invalidated(self):
""" Determine whether the current thread has modified the cache. """
return getattr(self._invalidation_flags, 'cache', False)
@cache_invalidated.setter
def cache_invalidated(self, value):
self._invalidation_flags.cache = value
def setup_signaling(self):
""" Setup the inter-process signaling on this registry. """
if self.in_test_mode():
return
with self.cursor() as cr:
# The `base_registry_signaling` sequence indicates when the registry
# must be reloaded.
# The `base_cache_signaling` sequence indicates when all caches must
# be invalidated (i.e. cleared).
cr.execute(
"SELECT sequence_name FROM information_schema.sequences WHERE sequence_name='base_registry_signaling'"
)
if not cr.fetchall():
cr.execute(
"CREATE SEQUENCE base_registry_signaling INCREMENT BY 1 START WITH 1"
)
cr.execute("SELECT nextval('base_registry_signaling')")
cr.execute(
"CREATE SEQUENCE base_cache_signaling INCREMENT BY 1 START WITH 1"
)
cr.execute("SELECT nextval('base_cache_signaling')")
cr.execute(""" SELECT base_registry_signaling.last_value,
base_cache_signaling.last_value
FROM base_registry_signaling, base_cache_signaling"""
)
self.registry_sequence, self.cache_sequence = cr.fetchone()
_logger.debug(
"Multiprocess load registry signaling: [Registry: %s] [Cache: %s]",
self.registry_sequence, self.cache_sequence)
def check_signaling(self):
""" Check whether the registry has changed, and performs all necessary
operations to update the registry. Return an up-to-date registry.
"""
if self.in_test_mode():
return self
with closing(self.cursor()) as cr:
cr.execute(""" SELECT base_registry_signaling.last_value,
base_cache_signaling.last_value
FROM base_registry_signaling, base_cache_signaling"""
)
r, c = cr.fetchone()
_logger.debug(
"Multiprocess signaling check: [Registry - %s -> %s] [Cache - %s -> %s]",
self.registry_sequence, r, self.cache_sequence, c)
# Check if the model registry must be reloaded
if self.registry_sequence != r:
_logger.info(
"Reloading the model registry after database signaling.")
self = Registry.new(self.db_name)
# Check if the model caches must be invalidated.
elif self.cache_sequence != c:
_logger.info(
"Invalidating all model caches after database signaling.")
self.clear_caches()
# prevent re-signaling the clear_caches() above, or any residual one that
# would be inherited from the master process (first request in pre-fork mode)
self.cache_invalidated = False
self.registry_sequence = r
self.cache_sequence = c
return self
def signal_changes(self):
""" Notifies other processes if registry or cache has been invalidated. """
if self.registry_invalidated and not self.in_test_mode():
_logger.info("Registry changed, signaling through the database")
with closing(self.cursor()) as cr:
cr.execute("select nextval('base_registry_signaling')")
self.registry_sequence = cr.fetchone()[0]
# no need to notify cache invalidation in case of registry invalidation,
# because reloading the registry implies starting with an empty cache
elif self.cache_invalidated and not self.in_test_mode():
_logger.info(
"At least one model cache has been invalidated, signaling through the database."
)
with closing(self.cursor()) as cr:
cr.execute("select nextval('base_cache_signaling')")
self.cache_sequence = cr.fetchone()[0]
self.registry_invalidated = False
self.cache_invalidated = False
def reset_changes(self):
""" Reset the registry and cancel all invalidations. """
if self.registry_invalidated:
with closing(self.cursor()) as cr:
self.setup_models(cr)
self.registry_invalidated = False
if self.cache_invalidated:
self.__cache.clear()
self.cache_invalidated = False
@contextmanager
def manage_changes(self):
""" Context manager to signal/discard registry and cache invalidations. """
try:
yield self
self.signal_changes()
except Exception:
self.reset_changes()
raise
def in_test_mode(self):
""" Test whether the registry is in 'test' mode. """
return self.test_cr is not None
def enter_test_mode(self, cr):
""" Enter the 'test' mode, where one cursor serves several requests. """
assert self.test_cr is None
self.test_cr = cr
self.test_lock = threading.RLock()
assert Registry._saved_lock is None
Registry._saved_lock = Registry._lock
Registry._lock = DummyRLock()
def leave_test_mode(self):
""" Leave the test mode. """
assert self.test_cr is not None
self.test_cr = None
self.test_lock = None
assert Registry._saved_lock is not None
Registry._lock = Registry._saved_lock
Registry._saved_lock = None
def cursor(self):
""" Return a new cursor for the database. The cursor itself may be used
as a context manager to commit/rollback and close automatically.
"""
if self.test_cr is not None:
# in test mode we use a proxy object that uses 'self.test_cr' underneath
return TestCursor(self.test_cr, self.test_lock)
return self._db.cursor()
def cache(self):
""" A cache for model methods. """
# this lazy_property is automatically reset by lazy_property.reset_all()
return LRU(8192)
class Registry(Mapping):
""" Model registry for a particular database.
The registry is essentially a mapping between model names and model classes.
There is one registry instance per database.
"""
_lock = threading.RLock()
_saved_lock = None
@lazy_classproperty
def registries(cls):
""" A mapping from database names to registries. """
size = config.get('registry_lru_size', None)
if not size:
# Size the LRU depending of the memory limits
if os.name != 'posix':
# cannot specify the memory limit soft on windows...
size = 42
else:
# A registry takes 10MB of memory on average, so we reserve
# 10Mb (registry) + 5Mb (working memory) per registry
avgsz = 15 * 1024 * 1024
size = int(config['limit_memory_soft'] / avgsz)
return LRU(size)
def __new__(cls, db_name):
""" Return the registry for the given database name."""
with cls._lock:
try:
return cls.registries[db_name]
except KeyError:
return cls.new(db_name)
finally:
# set db tracker - cleaned up at the WSGI dispatching phase in
# odoo.service.wsgi_server.application
threading.current_thread().dbname = db_name
@classmethod
def new(cls, db_name, force_demo=False, status=None, update_module=False):
""" Create and return a new registry for the given database name. """
with cls._lock:
with odoo.api.Environment.manage():
registry = object.__new__(cls)
registry.init(db_name)
# Initializing a registry will call general code which will in
# turn call Registry() to obtain the registry being initialized.
# Make it available in the registries dictionary then remove it
# if an exception is raised.
cls.delete(db_name)
cls.registries[db_name] = registry
try:
registry.setup_signaling()
# This should be a method on Registry
odoo.modules.load_modules(registry._db, force_demo, status, update_module)
except Exception:
_logger.exception('Failed to load registry')
del cls.registries[db_name]
raise
# load_modules() above can replace the registry by calling
# indirectly new() again (when modules have to be uninstalled).
# Yeah, crazy.
init_parent = registry._init_parent
registry = cls.registries[db_name]
registry._init_parent.update(init_parent)
with closing(registry.cursor()) as cr:
registry.do_parent_store(cr)
cr.commit()
registry.ready = True
if update_module:
# only in case of update, otherwise we'll have an infinite reload loop!
registry.signal_registry_change()
return registry
def init(self, db_name):
self.models = {} # model name/model instance mapping
self._sql_error = {}
self._init = True
self._init_parent = {}
self._assertion_report = assertion_report.assertion_report()
self._fields_by_model = None
# modules fully loaded (maintained during init phase by `loading` module)
self._init_modules = set()
self.db_name = db_name
self._db = odoo.sql_db.db_connect(db_name)
# special cursor for test mode; None means "normal" mode
self.test_cr = None
# Indicates that the registry is
self.ready = False
# Inter-process signaling (used only when odoo.multi_process is True):
# The `base_registry_signaling` sequence indicates the whole registry
# must be reloaded.
# The `base_cache_signaling sequence` indicates all caches must be
# invalidated (i.e. cleared).
self.registry_sequence = None
self.cache_sequence = None
self.cache = LRU(8192)
# Flag indicating if at least one model cache has been cleared.
# Useful only in a multi-process context.
self.cache_cleared = False
with closing(self.cursor()) as cr:
has_unaccent = odoo.modules.db.has_unaccent(cr)
if odoo.tools.config['unaccent'] and not has_unaccent:
_logger.warning("The option --unaccent was given but no unaccent() function was found in database.")
self.has_unaccent = odoo.tools.config['unaccent'] and has_unaccent
@classmethod
def delete(cls, db_name):
""" Delete the registry linked to a given database. """
with cls._lock:
if db_name in cls.registries:
cls.registries[db_name].clear_caches()
del cls.registries[db_name]
@classmethod
def delete_all(cls):
""" Delete all the registries. """
with cls._lock:
for db_name in cls.registries.keys():
cls.delete(db_name)
#
# Mapping abstract methods implementation
# => mixin provides methods keys, items, values, get, __eq__, and __ne__
#
def __len__(self):
""" Return the size of the registry. """
return len(self.models)
def __iter__(self):
""" Return an iterator over all model names. """
return iter(self.models)
def __getitem__(self, model_name):
""" Return the model with the given name or raise KeyError if it doesn't exist."""
return self.models[model_name]
def __call__(self, model_name):
""" Same as ``self[model_name]``. """
return self.models[model_name]
def __setitem__(self, model_name, model):
""" Add or replace a model in the registry."""
self.models[model_name] = model
@lazy_classproperty
def model_cache(cls):
""" A cache for model classes, indexed by their base classes. """
# we cache 256 classes per registry on average
return LRU(cls.registries.count * 256)
@lazy_property
def field_sequence(self):
""" Return a function mapping a field to an integer. The value of a
field is guaranteed to be strictly greater than the value of the
field's dependencies.
"""
# map fields on their dependents
dependents = {
field: set(dep for dep, _ in model._field_triggers[field] if dep != field)
for model in self.itervalues()
for field in model._fields.itervalues()
}
# sort them topologically, and associate a sequence number to each field
mapping = {
field: num
for num, field in enumerate(reversed(topological_sort(dependents)))
}
return mapping.get
def clear_manual_fields(self):
""" Invalidate the cache for manual fields. """
self._fields_by_model = None
def get_manual_fields(self, cr, model_name):
""" Return the manual fields (as a dict) for the given model. """
if self._fields_by_model is None:
# Query manual fields for all models at once
self._fields_by_model = dic = defaultdict(dict)
cr.execute('SELECT * FROM ir_model_fields WHERE state=%s', ('manual',))
for field in cr.dictfetchall():
dic[field['model']][field['name']] = field
return self._fields_by_model[model_name]
def do_parent_store(self, cr):
env = odoo.api.Environment(cr, SUPERUSER_ID, {})
for model_name in self._init_parent:
if model_name in env:
env[model_name]._parent_store_compute()
self._init = False
def descendants(self, model_names, *kinds):
""" Return the models corresponding to ``model_names`` and all those
that inherit/inherits from them.
"""
assert all(kind in ('_inherit', '_inherits') for kind in kinds)
funcs = [attrgetter(kind + '_children') for kind in kinds]
models = OrderedSet()
queue = deque(model_names)
while queue:
model = self[queue.popleft()]
models.add(model._name)
for func in funcs:
queue.extend(func(model))
return models
def load(self, cr, module):
""" Load a given module in the registry, and return the names of the
modified models.
At the Python level, the modules are already loaded, but not yet on a
per-registry level. This method populates a registry with the given
modules, i.e. it instanciates all the classes of a the given module
and registers them in the registry.
"""
from .. import models
lazy_property.reset_all(self)
# Instantiate registered classes (via the MetaModel automatic discovery
# or via explicit constructor call), and add them to the pool.
model_names = []
for cls in models.MetaModel.module_to_models.get(module.name, []):
# models register themselves in self.models
model = cls._build_model(self, cr)
model_names.append(model._name)
return self.descendants(model_names, '_inherit')
def setup_models(self, cr, partial=False):
""" Complete the setup of models.
This must be called after loading modules and before using the ORM.
:param partial: ``True`` if all models have not been loaded yet.
"""
lazy_property.reset_all(self)
env = odoo.api.Environment(cr, SUPERUSER_ID, {})
# load custom models
ir_model = env['ir.model']
cr.execute('SELECT * FROM ir_model WHERE state=%s', ('manual',))
for model_data in cr.dictfetchall():
model_class = ir_model._instanciate(model_data)
model_class._build_model(self, cr)
# prepare the setup on all models
models = env.values()
for model in models:
model._prepare_setup()
# do the actual setup from a clean state
self._m2m = {}
for model in models:
model._setup_base(partial)
for model in models:
model._setup_fields(partial)
for model in models:
model._setup_complete()
def init_models(self, cr, model_names, context):
""" Initialize a list of models (given by their name). Call methods
``_auto_init``, ``init``, and ``_auto_end`` on each model to create
or update the database tables supporting the models.
The ``context`` may contain the following items:
- ``module``: the name of the module being installed/updated, if any;
- ``update_custom_fields``: whether custom fields should be updated.
"""
if 'module' in context:
_logger.info('module %s: creating or updating database tables', context['module'])
context = dict(context, todo=[])
env = odoo.api.Environment(cr, SUPERUSER_ID, context)
models = [env[model_name] for model_name in model_names]
for model in models:
model._auto_init()
model.init()
cr.commit()
for model in models:
model._auto_end()
cr.commit()
for _, func, args in sorted(context['todo']):
func(*args)
if models:
models[0].recompute()
cr.commit()
# make sure all tables are present
missing = [name
for name, model in env.items()
if not model._abstract and not model._table_exist()]
if missing:
_logger.warning("Models have no table: %s.", ", ".join(missing))
# recreate missing tables following model dependencies
deps = {name: model._depends for name, model in env.items()}
for name in topological_sort(deps):
if name in missing:
_logger.info("Recreate table of model %s.", name)
env[name].init()
cr.commit()
# check again, and log errors if tables are still missing
for name, model in env.items():
if not model._abstract and not model._table_exist():
_logger.error("Model %s has no table.", name)
def clear_caches(self):
""" Clear the caches associated to methods decorated with
``tools.ormcache`` or ``tools.ormcache_multi`` for all the models.
"""
self.cache.clear()
for model in self.models.itervalues():
model.clear_caches()
def setup_signaling(self):
""" Setup the inter-process signaling on this registry. """
if not odoo.multi_process:
return
with self.cursor() as cr:
# The `base_registry_signaling` sequence indicates when the registry
# must be reloaded.
# The `base_cache_signaling` sequence indicates when all caches must
# be invalidated (i.e. cleared).
cr.execute("SELECT sequence_name FROM information_schema.sequences WHERE sequence_name='base_registry_signaling'")
if not cr.fetchall():
cr.execute("CREATE SEQUENCE base_registry_signaling INCREMENT BY 1 START WITH 1")
cr.execute("SELECT nextval('base_registry_signaling')")
cr.execute("CREATE SEQUENCE base_cache_signaling INCREMENT BY 1 START WITH 1")
cr.execute("SELECT nextval('base_cache_signaling')")
cr.execute(""" SELECT base_registry_signaling.last_value,
base_cache_signaling.last_value
FROM base_registry_signaling, base_cache_signaling""")
self.registry_sequence, self.cache_sequence = cr.fetchone()
_logger.debug("Multiprocess load registry signaling: [Registry: %s] [Cache: %s]",
self.registry_sequence, self.cache_sequence)
def check_signaling(self):
""" Check whether the registry has changed, and performs all necessary
operations to update the registry. Return an up-to-date registry.
"""
if not odoo.multi_process:
return self
with closing(self.cursor()) as cr:
cr.execute(""" SELECT base_registry_signaling.last_value,
base_cache_signaling.last_value
FROM base_registry_signaling, base_cache_signaling""")
r, c = cr.fetchone()
_logger.debug("Multiprocess signaling check: [Registry - %s -> %s] [Cache - %s -> %s]",
self.registry_sequence, r, self.cache_sequence, c)
# Check if the model registry must be reloaded
if self.registry_sequence != r:
_logger.info("Reloading the model registry after database signaling.")
self = Registry.new(self.db_name)
# Check if the model caches must be invalidated.
elif self.cache_sequence != c:
_logger.info("Invalidating all model caches after database signaling.")
self.clear_caches()
self.cache_cleared = False
self.registry_sequence = r
self.cache_sequence = c
return self
def signal_registry_change(self):
""" Notifies other processes that the registry has changed. """
if odoo.multi_process:
_logger.info("Registry changed, signaling through the database")
with closing(self.cursor()) as cr:
cr.execute("select nextval('base_registry_signaling')")
self.registry_sequence = cr.fetchone()[0]
def signal_caches_change(self):
""" Notifies other processes if caches have been invalidated. """
if odoo.multi_process and self.cache_cleared:
# signal it through the database to other processes
_logger.info("At least one model cache has been invalidated, signaling through the database.")
with closing(self.cursor()) as cr:
cr.execute("select nextval('base_cache_signaling')")
self.cache_sequence = cr.fetchone()[0]
self.cache_cleared = False
def in_test_mode(self):
""" Test whether the registry is in 'test' mode. """
return self.test_cr is not None
def enter_test_mode(self):
""" Enter the 'test' mode, where one cursor serves several requests. """
assert self.test_cr is None
self.test_cr = self._db.test_cursor()
assert Registry._saved_lock is None
Registry._saved_lock = Registry._lock
Registry._lock = DummyRLock()
def leave_test_mode(self):
""" Leave the test mode. """
assert self.test_cr is not None
self.clear_caches()
self.test_cr.force_close()
self.test_cr = None
assert Registry._saved_lock is not None
Registry._lock = Registry._saved_lock
Registry._saved_lock = None
def cursor(self):
""" Return a new cursor for the database. The cursor itself may be used
as a context manager to commit/rollback and close automatically.
"""
cr = self.test_cr
if cr is not None:
# While in test mode, we use one special cursor across requests. The
# test cursor uses a reentrant lock to serialize accesses. The lock
# is granted here by cursor(), and automatically released by the
# cursor itself in its method close().
cr.acquire()
return cr
return self._db.cursor()
class Registry(Mapping):
""" Model registry for a particular database.
The registry is essentially a mapping between model names and model classes.
There is one registry instance per database.
"""
_lock = threading.RLock()
_saved_lock = None
@lazy_classproperty
def registries(cls):
""" A mapping from database names to registries. """
size = config.get('registry_lru_size', None)
if not size:
# Size the LRU depending of the memory limits
if os.name != 'posix':
# cannot specify the memory limit soft on windows...
size = 42
else:
# A registry takes 10MB of memory on average, so we reserve
# 10Mb (registry) + 5Mb (working memory) per registry
avgsz = 15 * 1024 * 1024
size = int(config['limit_memory_soft'] / avgsz)
return LRU(size)
def __new__(cls, db_name):
""" Return the registry for the given database name."""
with cls._lock:
try:
return cls.registries[db_name]
except KeyError:
return cls.new(db_name)
finally:
# set db tracker - cleaned up at the WSGI dispatching phase in
# odoo.service.wsgi_server.application
threading.current_thread().dbname = db_name
@classmethod
def new(cls, db_name, force_demo=False, status=None, update_module=False):
""" Create and return a new registry for the given database name. """
with cls._lock:
with odoo.api.Environment.manage():
registry = object.__new__(cls)
registry.init(db_name)
# Initializing a registry will call general code which will in
# turn call Registry() to obtain the registry being initialized.
# Make it available in the registries dictionary then remove it
# if an exception is raised.
cls.delete(db_name)
cls.registries[db_name] = registry
try:
registry.setup_signaling()
# This should be a method on Registry
odoo.modules.load_modules(registry._db, force_demo, status, update_module)
except Exception:
_logger.exception('Failed to load registry')
del cls.registries[db_name]
raise
# load_modules() above can replace the registry by calling
# indirectly new() again (when modules have to be uninstalled).
# Yeah, crazy.
init_parent = registry._init_parent
registry = cls.registries[db_name]
registry._init_parent.update(init_parent)
with closing(registry.cursor()) as cr:
registry.do_parent_store(cr)
cr.commit()
registry.ready = True
if update_module:
# only in case of update, otherwise we'll have an infinite reload loop!
registry.signal_registry_change()
return registry
def init(self, db_name):
self.models = {} # model name/model instance mapping
self._sql_error = {}
self._init = True
self._init_parent = {}
self._assertion_report = assertion_report.assertion_report()
self._fields_by_model = None
# modules fully loaded (maintained during init phase by `loading` module)
self._init_modules = set()
self.db_name = db_name
self._db = odoo.sql_db.db_connect(db_name)
# special cursor for test mode; None means "normal" mode
self.test_cr = None
# Indicates that the registry is
self.ready = False
# Inter-process signaling (used only when odoo.multi_process is True):
# The `base_registry_signaling` sequence indicates the whole registry
# must be reloaded.
# The `base_cache_signaling sequence` indicates all caches must be
# invalidated (i.e. cleared).
self.registry_sequence = None
self.cache_sequence = None
self.cache = LRU(8192)
# Flag indicating if at least one model cache has been cleared.
# Useful only in a multi-process context.
self.cache_cleared = False
with closing(self.cursor()) as cr:
has_unaccent = odoo.modules.db.has_unaccent(cr)
if odoo.tools.config['unaccent'] and not has_unaccent:
_logger.warning("The option --unaccent was given but no unaccent() function was found in database.")
self.has_unaccent = odoo.tools.config['unaccent'] and has_unaccent
@classmethod
def delete(cls, db_name):
""" Delete the registry linked to a given database. """
with cls._lock:
if db_name in cls.registries:
cls.registries[db_name].clear_caches()
del cls.registries[db_name]
@classmethod
def delete_all(cls):
""" Delete all the registries. """
with cls._lock:
for db_name in cls.registries.keys():
cls.delete(db_name)
#
# Mapping abstract methods implementation
# => mixin provides methods keys, items, values, get, __eq__, and __ne__
#
def __len__(self):
""" Return the size of the registry. """
return len(self.models)
def __iter__(self):
""" Return an iterator over all model names. """
return iter(self.models)
def __getitem__(self, model_name):
""" Return the model with the given name or raise KeyError if it doesn't exist."""
return self.models[model_name]
def __call__(self, model_name):
""" Same as ``self[model_name]``. """
return self.models[model_name]
def __setitem__(self, model_name, model):
""" Add or replace a model in the registry."""
self.models[model_name] = model
@lazy_classproperty
def model_cache(cls):
""" A cache for model classes, indexed by their base classes. """
# we cache 256 classes per registry on average
return LRU(cls.registries.count * 256)
@lazy_property
def field_sequence(self):
""" Return a function mapping a field to an integer. The value of a
field is guaranteed to be strictly greater than the value of the
field's dependencies.
"""
# map fields on their dependents
dependents = {
field: set(dep for dep, _ in model._field_triggers[field] if dep != field)
for model in self.itervalues()
for field in model._fields.itervalues()
}
# sort them topologically, and associate a sequence number to each field
mapping = {
field: num
for num, field in enumerate(reversed(topological_sort(dependents)))
}
return mapping.get
def clear_manual_fields(self):
""" Invalidate the cache for manual fields. """
self._fields_by_model = None
def get_manual_fields(self, cr, model_name):
""" Return the manual fields (as a dict) for the given model. """
if self._fields_by_model is None:
# Query manual fields for all models at once
self._fields_by_model = dic = defaultdict(dict)
cr.execute('SELECT * FROM ir_model_fields WHERE state=%s', ('manual',))
for field in cr.dictfetchall():
dic[field['model']][field['name']] = field
return self._fields_by_model[model_name]
def do_parent_store(self, cr):
env = odoo.api.Environment(cr, SUPERUSER_ID, {})
for model_name in self._init_parent:
if model_name in env:
env[model_name]._parent_store_compute()
self._init = False
def load(self, cr, module):
""" Load a given module in the registry, and return the names of the
modified models.
At the Python level, the modules are already loaded, but not yet on a
per-registry level. This method populates a registry with the given
modules, i.e. it instanciates all the classes of a the given module
and registers them in the registry.
"""
from .. import models
loaded_models = OrderedSet()
def mark_loaded(model):
# recursively mark model and its children
loaded_models.add(model._name)
for child_name in model._inherit_children:
mark_loaded(self[child_name])
lazy_property.reset_all(self)
# Instantiate registered classes (via the MetaModel automatic discovery
# or via explicit constructor call), and add them to the pool.
for cls in models.MetaModel.module_to_models.get(module.name, []):
# models register themselves in self.models
model = cls._build_model(self, cr)
mark_loaded(model)
return list(loaded_models)
def setup_models(self, cr, partial=False):
""" Complete the setup of models.
This must be called after loading modules and before using the ORM.
:param partial: ``True`` if all models have not been loaded yet.
"""
lazy_property.reset_all(self)
env = odoo.api.Environment(cr, SUPERUSER_ID, {})
# load custom models
ir_model = env['ir.model']
cr.execute('SELECT * FROM ir_model WHERE state=%s', ('manual',))
for model_data in cr.dictfetchall():
ir_model._instanciate(model_data)
# prepare the setup on all models
models = env.values()
for model in models:
model._prepare_setup()
# do the actual setup from a clean state
self._m2m = {}
for model in models:
model._setup_base(partial)
for model in models:
model._setup_fields(partial)
for model in models:
model._setup_complete()
def init_models(self, cr, model_names, context):
""" Initialize a list of models (given by their name). Call methods
``_auto_init``, ``init``, and ``_auto_end`` on each model to create
or update the database tables supporting the models.
The ``context`` may contain the following items:
- ``module``: the name of the module being installed/updated, if any;
- ``update_custom_fields``: whether custom fields should be updated.
"""
if 'module' in context:
_logger.info('module %s: creating or updating database tables', context['module'])
context = dict(context, todo=[])
env = odoo.api.Environment(cr, SUPERUSER_ID, context)
models = [env[model_name] for model_name in model_names]
for model in models:
model._auto_init()
model.init()
cr.commit()
for model in models:
model._auto_end()
cr.commit()
for _, func, args in sorted(context['todo']):
func(*args)
if models:
models[0].recompute()
cr.commit()
def clear_caches(self):
""" Clear the caches associated to methods decorated with
``tools.ormcache`` or ``tools.ormcache_multi`` for all the models.
"""
self.cache.clear()
for model in self.models.itervalues():
model.clear_caches()
def setup_signaling(self):
""" Setup the inter-process signaling on this registry. """
if not odoo.multi_process:
return
with self.cursor() as cr:
# The `base_registry_signaling` sequence indicates when the registry
# must be reloaded.
# The `base_cache_signaling` sequence indicates when all caches must
# be invalidated (i.e. cleared).
cr.execute("SELECT sequence_name FROM information_schema.sequences WHERE sequence_name='base_registry_signaling'")
if not cr.fetchall():
cr.execute("CREATE SEQUENCE base_registry_signaling INCREMENT BY 1 START WITH 1")
cr.execute("SELECT nextval('base_registry_signaling')")
cr.execute("CREATE SEQUENCE base_cache_signaling INCREMENT BY 1 START WITH 1")
cr.execute("SELECT nextval('base_cache_signaling')")
cr.execute(""" SELECT base_registry_signaling.last_value,
base_cache_signaling.last_value
FROM base_registry_signaling, base_cache_signaling""")
self.registry_sequence, self.cache_sequence = cr.fetchone()
_logger.debug("Multiprocess load registry signaling: [Registry: %s] [Cache: %s]",
self.registry_sequence, self.cache_sequence)
def check_signaling(self):
""" Check whether the registry has changed, and performs all necessary
operations to update the registry. Return an up-to-date registry.
"""
if not odoo.multi_process:
return self
with closing(self.cursor()) as cr:
cr.execute(""" SELECT base_registry_signaling.last_value,
base_cache_signaling.last_value
FROM base_registry_signaling, base_cache_signaling""")
r, c = cr.fetchone()
_logger.debug("Multiprocess signaling check: [Registry - %s -> %s] [Cache - %s -> %s]",
self.registry_sequence, r, self.cache_sequence, c)
# Check if the model registry must be reloaded
if self.registry_sequence != r:
_logger.info("Reloading the model registry after database signaling.")
self = Registry.new(self.db_name)
# Check if the model caches must be invalidated.
elif self.cache_sequence != c:
_logger.info("Invalidating all model caches after database signaling.")
self.clear_caches()
self.cache_cleared = False
self.registry_sequence = r
self.cache_sequence = c
return self
def signal_registry_change(self):
""" Notifies other processes that the registry has changed. """
if odoo.multi_process:
_logger.info("Registry changed, signaling through the database")
with closing(self.cursor()) as cr:
cr.execute("select nextval('base_registry_signaling')")
self.registry_sequence = cr.fetchone()[0]
def signal_caches_change(self):
""" Notifies other processes if caches have been invalidated. """
if odoo.multi_process and self.cache_cleared:
# signal it through the database to other processes
_logger.info("At least one model cache has been invalidated, signaling through the database.")
with closing(self.cursor()) as cr:
cr.execute("select nextval('base_cache_signaling')")
self.cache_sequence = cr.fetchone()[0]
self.cache_cleared = False
def in_test_mode(self):
""" Test whether the registry is in 'test' mode. """
return self.test_cr is not None
def enter_test_mode(self):
""" Enter the 'test' mode, where one cursor serves several requests. """
assert self.test_cr is None
self.test_cr = self._db.test_cursor()
assert Registry._saved_lock is None
Registry._saved_lock = Registry._lock
Registry._lock = DummyRLock()
def leave_test_mode(self):
""" Leave the test mode. """
assert self.test_cr is not None
self.clear_caches()
self.test_cr.force_close()
self.test_cr = None
assert Registry._saved_lock is not None
Registry._lock = Registry._saved_lock
Registry._saved_lock = None
def cursor(self):
""" Return a new cursor for the database. The cursor itself may be used
as a context manager to commit/rollback and close automatically.
"""
cr = self.test_cr
if cr is not None:
# While in test mode, we use one special cursor across requests. The
# test cursor uses a reentrant lock to serialize accesses. The lock
# is granted here by cursor(), and automatically released by the
# cursor itself in its method close().
cr.acquire()
return cr
return self._db.cursor()
def model_cache(cls):
""" A cache for model classes, indexed by their base classes. """
# we cache 256 classes per registry on average
return LRU(cls.registries.count * 256)
def clear_cached_pages(cls):
cls._cached_pages = LRU(1024)