[Zope3-checkins] CVS: Zope3/lib/python/Zope/App/StartUp - SiteDefinition.py:1.4

[Guido van Rossum]

Update of /cvs-repository/Zope3/lib/python/Zope/App/StartUp
In directory cvs.zope.org:/tmp/cvs-serv31087

Modified Files:
	SiteDefinition.py 
Log Message:
A *very* preliminary version of code to create and configure Events
and ObjectHub services.  This currently hardcodes everything.  It
doesn't activate or even register them, because I don't know how to do
that yet.

XXX My motivation for checking this in now is:

(1) It works (as far as it goes).

(2) It's a definite improvement (cuts out several steps from my
    recipe for setting up a text index).

(3) Maybe SteveA or Jim can look at my code and suggest a better way
    to do it, or explain why my attempts to activate the services
    failed.

(4) I plan to generalize this and add ZCML directives, once I
    understand how it's done.

XXX Note: Wednesday I'm traveling to ZC HQ, which means I may not get
to hack on this code until Thursday.


=== Zope3/lib/python/Zope/App/StartUp/SiteDefinition.py 1.3 => 1.4 ===
--- Zope3/lib/python/Zope/App/StartUp/SiteDefinition.py:1.3	Tue Dec 10 14:42:51 2002
+++ Zope3/lib/python/Zope/App/StartUp/SiteDefinition.py	Tue Dec 10 18:04:09 2002
@@ -24,7 +24,14 @@
 from Zope.Configuration.INonEmptyDirective import INonEmptyDirective
 from Zope.Configuration.ISubdirectiveHandler import ISubdirectiveHandler
 
+# Import classes related to initial-services
 from ServerTypeRegistry import getServerType
+from Zope.App.OFS.Services.ObjectHub.ObjectHub import ObjectHub
+from Zope.App.OFS.Services.LocalEventService.LocalEventService import \
+     LocalEventService
+from Zope.App.OFS.Services.ServiceManager.ServiceManager import ServiceManager
+from Zope.App.OFS.Services.ServiceManager.ServiceConfiguration import \
+     ServiceConfiguration
 
 # Import Undo-related classes 
 from Zope.ComponentArchitecture import getService
@@ -154,6 +161,7 @@
             from Transaction import get_transaction
         
             app = RootFolder()
+            self._addEssentialServices(app)
             root[ZopePublication.root_name] = app
 
             get_transaction().commit()
@@ -162,6 +170,47 @@
 
         imp = PersistentModuleImporter()
         imp.install()
+
+
+    def _addEssentialServices(self, app):
+        """Add essential services.
+
+        XXX This ought to be configurable.  For now, hardcode an Event
+        service and an ObjectHub.  I'll refactor later.
+
+        XXX To reiterate, THIS IS AN EXAMPLE ONLY!!!  This code should
+        be generalized.  Preferably, using marker interfaces,
+        adapters, and a factory or two.  Oh, and don't forget
+        metameta.zcml. :-)
+        """
+
+        sm = ServiceManager()
+        app.setServiceManager(sm)
+
+        default = sm.Packages['default']
+
+        es = LocalEventService()
+        default.setObject('Events-1', es)
+
+        hub = ObjectHub()
+        default.setObject('ObjectHub-1', hub)
+
+        configure = default['configure']
+        here = ('', '++etc++Services', 'Packages', 'default')
+
+        sc = ServiceConfiguration('Events', here + ('Events-1',))
+        configure.setObject(None, sc)
+
+        sc = ServiceConfiguration('ObjectHub', here + ('ObjectHub-1',))
+        configure.setObject(None, sc)
+
+        # XXX I want to register and possibly activate these services,
+        #     but the following code doesn't work. :-(
+        ##sc.status = "Active"
+        # XXX And the following code doesn't work either. :-(
+        registry = sm.createConfigurationsFor(sc)
+        ##registry.register(sc)
+        ##registry.activate(sc)
 
 
     def __call__(self):