242c4a4921
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1845 fd906abe-77d9-0310-91a1-e0d9ade77398
148 lines
3.8 KiB
Python
148 lines
3.8 KiB
Python
#
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# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Service management classes.
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$Id$
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"""
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from BTrees.OOBTree import OOBTree
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from zope.cachedescriptors.property import Lazy
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from zope.component import adapts
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from zope.interface import implements
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from cybertools.composer.interfaces import IInstance
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from cybertools.util.jeep import Jeep
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from cybertools.organize.interfaces import IServiceManager
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from cybertools.organize.interfaces import IClient, IClientFactory
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from cybertools.organize.interfaces import IService, IScheduledService
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class ServiceManager(object):
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implements(IServiceManager)
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servicesFactory = list
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clientSchemasFactory = Jeep
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clientsFactory = OOBTree
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clientNum = 0
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def __init__(self):
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if self.servicesFactory is not None:
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self.services = self.servicesFactory()
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if self.clientSchemasFactory is not None:
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self.clientSchemas = self.clientSchemasFactory()
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@Lazy
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def clients(self):
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return self.clientsFactory()
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def addClient(self, client):
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name = self.generateClientName(client)
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self.clients[name] = client
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def generateClientName(self, client):
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self.clientNum += 1
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return '%05i' % self.clientNum
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class Service(object):
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implements(IService)
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def __init__(self, capacity=-1):
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self.capacity = capacity
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self.registrations = []
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@property
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def availableCapacity(self):
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if self.capacity >= 0 and len(self.registrations) >= self.capacity:
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return 0
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return self.capacity - len(self.registrations)
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def register(self, client):
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if self.availableCapacity:
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reg = Registration(client)
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self.registrations.append(reg)
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return reg
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return None
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class ScheduledService(Service):
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implements(IScheduledService)
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class Client(object):
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implements(IClient)
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def __init__(self, manager):
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self.manager = manager
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class ClientFactory(object):
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implements(IClientFactory)
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adapts(IServiceManager)
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def __init__(self, context):
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self.context = context
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def __call__(self):
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return Client(self.context)
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class ClientInstanceAdapter(object):
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implements(IInstance)
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adapts(IClient)
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baseAspect = 'service.client.'
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schema = 'default'
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@property
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def aspect(self):
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return self.baseAspect + self.schema
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@property
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def template(self):
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return self.context.manager.clientSchemas.get(self.schema, None)
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def __init__(self, context):
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self.context = context
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def applyTemplate(self, data={}, schema='default', **kw):
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if getattr(self.context, 'attributes', None) is None:
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self.context.attributes = OOBTree()
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self.schema = schema
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template = self.template
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attributes = self.context.attributes.setdefault(self.aspect, OOBTree())
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if template is not None:
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for c in template.components:
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name = c.name
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attributes[name] = data.get(name, u'')
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class Registration(object):
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def __init__(self, client):
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self.client = client
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