def list_subs(self, context=None, componentid=None): self.curcontext = self._getcontextdir(context) try: subs,subs_shelf_fd = Personis_base.shelf_open(self.curcontext+"/.subscriptions", "r") except: raise ValueError, 'no subs db when listing subs for component "%s" in context "%s" '%(componentid,self.curcontext) if not subs.has_key(componentid): raise ValueError, 'no subs for component "%s" in context "%s" not found'%(componentid,self.curcontext) subdict = subs[componentid] if subs != None: Personis_base.shelf_close(subs, subs_shelf_fd) return subdict
def delete_sub(self, context=None, componentid=None, subname=None): self.curcontext = self._getcontextdir(context) if type(componentid) == type(u''): componentid = str(componentid) try: subs,subs_shelf_fd = Personis_base.shelf_open(self.curcontext+"/.subscriptions", "w") except: raise ValueError, 'no subs db when deleting sub %s for component "%s" in context "%s" not found'%(subname, componentid,self.curcontext) if not subs.has_key(componentid): raise ValueError, 'sub %s for component "%s" in context "%s" not found'%(subname, componentid,self.curcontext) subdict = subs[componentid] try: del subdict[subname] except: raise ValueError, 'cannot delete subname "%s" for component "%s" in context "%s" '%(subname,componentid,self.curcontext) subs[componentid] = subdict if subs != None: Personis_base.shelf_close(subs, subs_shelf_fd) return None
def subscribe(self,
context=[],
view=None,
subscription=None):
"""
arguments:
context is a list giving the path of context identifiers
view is either:
an identifier of a view in the context specified
a list of component identifiers or full path lists
None indicating that the values of all components in
the context be returned
subscription is a dictionary containing owner, password and subscription statement string
"""
subscription['modelname'] = self.modelname
print "subscription>>> %s %s %s" % (`context`, `view`, `subscription`)
cronsub = subscription["statement"].strip().startswith("[")
token = "%s:%f" % (self.user, time.time())
for elt in ("user", "password", "statement"):
if elt not in subscription:
raise ValueError, '"%s" key missing from subscription dict' % (elt)
if len(subscription.items()) != 4:
raise ValueError, 'unknown attribute in subscription %s'%(subscription)
#print "token:", token
self.curcontext = self._getcontextdir(context)
contextinfo = self.getcontext(context)
try:
comps,comps_shelf_fd = Personis_base.shelf_open(self.curcontext+"/.components", "r")
except:
print "can't open ",self.curcontext+"/.components"
comps = None
try:
views,views_shelf_fd = Personis_base.shelf_open(self.curcontext+"/.views", "r")
except:
views = None
try:
subs,subs_shelf_fd = Personis_base.shelf_open(self.curcontext+"/.subscriptions", "w")
except:
subs = None
cidlist = []
cobjlist = []
if type(view) is StringType:
if views != None:
if not views.has_key(view):
raise ValueError, '"%s" view not found'%(view)
cidlist = views[view].component_list
else:
raise ValueError, '"%s" view not found'%(view)
elif type(view) is ListType:
cidlist = view
elif view == None:
if comps != None:
cidlist = comps.keys()
else:
raise TypeError, 'view "%s" has unknown type'%(`view`)
for cid in cidlist:
if type(cid) == type(u''):
cid = str(cid)
if type(cid) is StringType:
if comps != None:
if comps.has_key(cid):
# add sub dict to subs for cid ######
if subs.has_key(cid):
newsub = subs[cid]
else:
newsub = {}
newsub[token] = subscription
subs[cid] = newsub
if cronsub:
cronserver.cronq.put(dict(op="put",context=context, comp=cid, subscription=subscription))
else:
raise ValueError, 'component "%s" not in view "%s" (%s)'%(cid,view,cidlist)
else:
raise ValueError, 'component "%s" not found'%(cid)
elif type(cid) is ListType:
vcontext = self._getcontextdir(cid[:-1])
try:
vcomps,vcomps_shelf_fd = Personis_base.shelf_open(vcontext+"/.components", "r")
except:
raise ValueError, 'context "%s" not in view "%s"'%(cid[-1],`view`)
if vcomps.has_key(cid[-1]):
# add sub dict to subs for cid[-1] #########
if not subs.has_key(cid[-1]):
newsub = {}
else:
newsub = subs[cid[-1]]
newsub[token] = subscription
subs[cid[-1]] = newsub
if cronsub:
cronserver.cronq.put(dict(op="put",context=context, comp=cid, subscription=subscription))
else:
raise ValueError, 'component "%s" not in view "%s"'%(cid[-1],`view`)
Personis_base.shelf_close(vcomps, vcomps_shelf_fd)
if comps != None:
Personis_base.shelf_close(comps, comps_shelf_fd)
if views != None:
Personis_base.shelf_close(views, views_shelf_fd)
if subs != None:
Personis_base.shelf_close(subs, subs_shelf_fd)
return token