def site_factory(request):
"""Application site factory
On application startup, this factory checks configuration to get application name and
load it from the ZODB; if the application can't be found, configuration is scanned to
get application factory, create a new one and create a local site manager.
"""
conn = get_connection(request)
root = conn.root()
application_key = request.registry.settings.get(PYAMS_APPLICATION_SETTINGS_KEY,
PYAMS_APPLICATION_DEFAULT_NAME)
application = root.get(application_key)
if application is None:
factory = request.registry.settings.get(PYAMS_APPLICATION_FACTORY_KEY)
if factory:
resolver = DottedNameResolver()
factory = resolver.maybe_resolve(factory)
else:
factory = request.registry.queryUtility(ISiteRootFactory, default=BaseSiteRoot)
application = root[application_key] = factory()
if IPossibleSite.providedBy(application):
lsm = LocalSiteManager(application, default_folder=False)
application.setSiteManager(lsm)
try:
# if some components require a valid and complete registry
# with all registered utilities, they can subscribe to
# INewLocalSiteCreatedEvent event interface
set_local_registry(application.getSiteManager())
get_current_registry().notify(NewLocalSiteCreatedEvent(application))
finally:
set_local_registry(None)
import transaction # pylint: disable=import-outside-toplevel
transaction.commit()
return application
def importComponentRegistry(context):
"""Import local components.
"""
site = context.getSite()
sm = None
if IPossibleSite.providedBy(site):
# All object managers are an IPossibleSite, but this
# defines the getSiteManager method to be available
try:
sm = site.getSiteManager()
except ComponentLookupError:
sm = None
if sm is None or not IComponentRegistry.providedBy(sm):
logger = context.getLogger('componentregistry')
logger.info("Can not register components, as no registry was found.")
return
importer = queryMultiAdapter((sm, context), IBody)
if importer:
body = context.readDataFile('componentregistry.xml')
if body is not None:
importer.body = body
else:
logger = context.getLogger('componentregistry')
logger.debug("Nothing to import")
def importComponentRegistry(context):
"""Import local components.
"""
site = context.getSite()
sm = None
if IPossibleSite.providedBy(site):
# All object managers are an IPossibleSite, but this
# defines the getSiteManager method to be available
try:
sm = site.getSiteManager()
except ComponentLookupError:
sm = None
if sm is None or not IComponentRegistry.providedBy(sm):
logger = context.getLogger('componentregistry')
logger.info("Can not register components, as no registry was found.")
return
importer = queryMultiAdapter((sm, context), IBody)
if importer:
body = context.readDataFile('componentregistry.xml')
if body is not None:
importer.body = body
else:
logger = context.getLogger('componentregistry')
logger.debug("Nothing to import")
def create_app(db):
conn = db.open()
try:
root = conn.root()
if not name in root:
with transaction_manager:
app = root[name] = model()
if (not ISite.providedBy(app) and
IPossibleSite.providedBy(app)):
LocalSiteManager(app)
notify(events.ApplicationInitializedEvent(app))
finally:
conn.close()
def create_app(db):
conn = db.open()
try:
root = conn.root()
if not name in root:
with transaction_manager:
app = root[name] = model()
if (not ISite.providedBy(app)
and IPossibleSite.providedBy(app)):
LocalSiteManager(app)
notify(events.ApplicationInitializedEvent(app))
finally:
conn.close()
def enableSite(obj, iface=ISite):
"""Install __before_traverse__ hook for Local Site
"""
# We want the original object, not stuff in between, and no acquisition
obj = aq_base(obj)
if not IPossibleSite.providedBy(obj):
raise TypeError('Must provide IPossibleSite')
hook = NameCaller(HOOK_NAME)
registerBeforeTraverse(obj, hook, HOOK_NAME, 1)
if not hasattr(obj, HOOK_NAME):
setattr(obj, HOOK_NAME, LocalSiteHook())
zope.interface.alsoProvides(obj, iface)
def exportComponentRegistry(context):
"""Export local components.
"""
site = context.getSite()
sm = None
if IPossibleSite.providedBy(site):
# All object managers are an IPossibleSite, but this
# defines the getSiteManager method to be available
try:
sm = site.getSiteManager()
except ComponentLookupError:
sm = None
if sm is None or not IComponentRegistry.providedBy(sm):
logger = context.getLogger('componentregistry')
logger.debug("Nothing to export.")
return
exporter = queryMultiAdapter((sm, context), IBody)
if exporter:
body = exporter.body
if body is not None:
context.writeDataFile('componentregistry.xml', body,
exporter.mime_type)
def initialize_applications(db, list_applications=list_applications,
transaction_manager=transaction_manager):
"""
This utility setup applications in a database.
The list of application to create is given by py:fun:list_applications
For each application to create:
- it creates the application thanks to the factory
- it eventually makes it a LocalSiteManager
You may use it as the :py:fun:init_db initializer parameter,
or cook your own.
:param db: the ZODB database
:param list_applications: a callable that return a dict of applications
factory indexed by their name
:param transaction_manager: if not provided
use :py:mod:transaction default one
"""
conn = db.open()
try:
root = conn.root()
apps = list_applications()
with transaction_manager:
for name, factory in apps.items():
if not name in root:
application = root[name] = factory()
if (not ISite.providedBy(application) and
IPossibleSite.providedBy(application)):
LocalSiteManager(application)
finally:
conn.close()
def exportComponentRegistry(context):
"""Export local components.
"""
site = context.getSite()
sm = None
if IPossibleSite.providedBy(site):
# All object managers are an IPossibleSite, but this
# defines the getSiteManager method to be available
try:
sm = site.getSiteManager()
except ComponentLookupError:
sm = None
if sm is None or not IComponentRegistry.providedBy(sm):
logger = context.getLogger('componentregistry')
logger.debug("Nothing to export.")
return
exporter = queryMultiAdapter((sm, context), IBody)
if exporter:
body = exporter.body
if body is not None:
context.writeDataFile('componentregistry.xml', body,
exporter.mime_type)
