""" Models registries.
"""
+from contextlib import contextmanager
import logging
import threading
import openerp.sql_db
import openerp.osv.orm
-import openerp.cron
import openerp.tools
import openerp.modules.db
import openerp.tools.config
+from openerp.tools import assertion_report
_logger = logging.getLogger(__name__)
"""
def __init__(self, db_name):
- self.models = {} # model name/model instance mapping
+ self.models = {} # model name/model instance mapping
self._sql_error = {}
self._store_function = {}
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 = openerp.sql_db.db_connect(db_name)
+ # Indicates that the registry is
+ self.ready = False
+
# Inter-process signaling (used only when openerp.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.base_registry_signaling_sequence = 1
- self.base_cache_signaling_sequence = 1
+ self.base_registry_signaling_sequence = None
+ self.base_cache_signaling_sequence = None
# Flag indicating if at least one model cache has been cleared.
# Useful only in a multi-process context.
and registers them in the registry.
"""
-
- res = []
-
+ models_to_load = [] # need to preserve loading order
# Instantiate registered classes (via the MetaModel automatic discovery
# or via explicit constructor call), and add them to the pool.
for cls in openerp.osv.orm.MetaModel.module_to_models.get(module.name, []):
- res.append(cls.create_instance(self, cr))
-
- return res
-
- def schedule_cron_jobs(self):
- """ Make the cron thread care about this registry/database jobs.
- This will initiate the cron thread to check for any pending jobs for
- this registry/database as soon as possible. Then it will continuously
- monitor the ir.cron model for future jobs. See openerp.cron for
- details.
- """
- openerp.cron.schedule_wakeup(openerp.cron.WAKE_UP_NOW, self.db.dbname)
+ # models register themselves in self.models
+ model = cls.create_instance(self, cr)
+ if model._name not in models_to_load:
+ # avoid double-loading models whose declaration is split
+ models_to_load.append(model._name)
+ return [self.models[m] for m in models_to_load]
def clear_caches(self):
""" Clear the caches
def any_cache_cleared(self):
return self._any_cache_cleared
+ @classmethod
+ def setup_multi_process_signaling(cls, cr):
+ if not openerp.multi_process:
+ return None, None
+
+ # 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).
+ 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""")
+ r, c = cr.fetchone()
+ _logger.debug("Multiprocess load registry signaling: [Registry: # %s] "\
+ "[Cache: # %s]",
+ r, c)
+ return r, c
+
+ @contextmanager
+ def cursor(self, auto_commit=True):
+ cr = self.db.cursor()
+ try:
+ yield cr
+ if auto_commit:
+ cr.commit()
+ finally:
+ cr.close()
+
+
class RegistryManager(object):
""" Model registries manager.
registries_lock = threading.RLock()
@classmethod
- def get(cls, db_name, force_demo=False, status=None, update_module=False,
- pooljobs=True):
+ def get(cls, db_name, force_demo=False, status=None, update_module=False):
""" Return a registry for a given database name."""
- try:
- return cls.registries[db_name]
- except KeyError:
- return cls.new(db_name, force_demo, status,
- update_module, pooljobs)
+ with cls.registries_lock:
+ try:
+ return cls.registries[db_name]
+ except KeyError:
+ return cls.new(db_name, force_demo, status,
+ update_module)
+ finally:
+ # set db tracker - cleaned up at the WSGI
+ # dispatching phase in openerp.service.wsgi_server.application
+ threading.current_thread().dbname = db_name
@classmethod
def new(cls, db_name, force_demo=False, status=None,
- update_module=False, pooljobs=True):
+ update_module=False):
""" Create and return a new registry for a given database name.
The (possibly) previous registry for that database name is discarded.
cls.delete(db_name)
cls.registries[db_name] = registry
try:
+ with registry.cursor() as cr:
+ seq_registry, seq_cache = Registry.setup_multi_process_signaling(cr)
+ registry.base_registry_signaling_sequence = seq_registry
+ registry.base_cache_signaling_sequence = seq_cache
# This should be a method on Registry
openerp.modules.load_modules(registry.db, force_demo, status, update_module)
except Exception:
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.
+ registry = cls.registries[db_name]
+
cr = registry.db.cursor()
try:
registry.do_parent_store(cr)
finally:
cr.close()
- if pooljobs:
- registry.schedule_cron_jobs()
+ registry.ready = True
+ if update_module:
+ # only in case of update, otherwise we'll have an infinite reload loop!
+ cls.signal_registry_change(db_name)
return registry
@classmethod
def delete(cls, db_name):
- """Delete the registry linked to a given database.
-
- This also cleans the associated caches. For good measure this also
- cancels the associated cron job. But please note that the cron job can
- be running and take some time before ending, and that you should not
- remove a registry if it can still be used by some thread. So it might
- be necessary to call yourself openerp.cron.Agent.cancel(db_name) and
- and join (i.e. wait for) the thread.
- """
+ """Delete the registry linked to a given database. """
with cls.registries_lock:
if db_name in cls.registries:
cls.registries[db_name].clear_caches()
del cls.registries[db_name]
- openerp.cron.cancel(db_name)
-
@classmethod
def delete_all(cls):
@classmethod
def check_registry_signaling(cls, db_name):
if openerp.multi_process and db_name in cls.registries:
- # Check if the model registry must be reloaded (e.g. after the
- # database has been updated by another process).
- registry = cls.get(db_name, pooljobs=False)
+ registry = cls.get(db_name)
cr = registry.db.cursor()
- registry_reloaded = False
try:
- cr.execute('SELECT last_value FROM base_registry_signaling')
- r = cr.fetchone()[0]
- if registry.base_registry_signaling_sequence != r:
+ 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 - old# %s new# %s] "\
+ "[Cache - old# %s new# %s]",
+ registry.base_registry_signaling_sequence, r,
+ registry.base_cache_signaling_sequence, c)
+ # Check if the model registry must be reloaded (e.g. after the
+ # database has been updated by another process).
+ if registry.base_registry_signaling_sequence is not None and registry.base_registry_signaling_sequence != r:
_logger.info("Reloading the model registry after database signaling.")
- # Don't run the cron in the Gunicorn worker.
- registry = cls.new(db_name, pooljobs=False)
- registry.base_registry_signaling_sequence = r
- registry_reloaded = True
- finally:
- cr.close()
-
- # Check if the model caches must be invalidated (e.g. after a write
- # occured on another process). Don't clear right after a registry
- # has been reload.
- cr = openerp.sql_db.db_connect(db_name).cursor()
- try:
- cr.execute('SELECT last_value FROM base_cache_signaling')
- r = cr.fetchone()[0]
- if registry.base_cache_signaling_sequence != r and not registry_reloaded:
+ registry = cls.new(db_name)
+ # Check if the model caches must be invalidated (e.g. after a write
+ # occured on another process). Don't clear right after a registry
+ # has been reload.
+ elif registry.base_cache_signaling_sequence is not None and registry.base_cache_signaling_sequence != c:
_logger.info("Invalidating all model caches after database signaling.")
- registry.base_cache_signaling_sequence = r
registry.clear_caches()
registry.reset_any_cache_cleared()
+ # One possible reason caches have been invalidated is the
+ # use of decimal_precision.write(), in which case we need
+ # to refresh fields.float columns.
+ for model in registry.models.values():
+ for column in model._columns.values():
+ if hasattr(column, 'digits_change'):
+ column.digits_change(cr)
+ registry.base_registry_signaling_sequence = r
+ registry.base_cache_signaling_sequence = c
finally:
cr.close()
if openerp.multi_process and db_name in cls.registries:
# Check the registries if any cache has been cleared and signal it
# through the database to other processes.
- registry = cls.get(db_name, pooljobs=False)
+ registry = cls.get(db_name)
if registry.any_cache_cleared():
- _logger.info("At least one model cache has been cleare, signaling through the database.")
+ _logger.info("At least one model cache has been cleared, signaling through the database.")
cr = registry.db.cursor()
r = 1
try:
- pass
cr.execute("select nextval('base_cache_signaling')")
r = cr.fetchone()[0]
finally:
@classmethod
def signal_registry_change(cls, db_name):
if openerp.multi_process and db_name in cls.registries:
- registry = cls.get(db_name, pooljobs=False)
+ _logger.info("Registry changed, signaling through the database")
+ registry = cls.get(db_name)
cr = registry.db.cursor()
r = 1
try:
projects / odoo / odoo.git / blobdiff