222df2ba2a
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3990 fd906abe-77d9-0310-91a1-e0d9ade77398
289 lines
8.5 KiB
Python
289 lines
8.5 KiB
Python
#
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# Copyright (c) 2008 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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Access to objects in a BSCW repository.
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$Id$
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"""
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import logging
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import os
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from datetime import datetime
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from time import strptime
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from xmlrpclib import ServerProxy, Fault
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from zope import component
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from zope.app.file.image import getImageInfo
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from zope.cachedescriptors.property import Lazy
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from zope.contenttype import guess_content_type
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from zope.interface import implements, Attribute
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from cybertools.integrator.base import ContainerFactory, ItemFactory, FileFactory
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from cybertools.integrator.base import ReadContainer, Item, File, Image
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from cybertools.integrator.base import ExternalURLInfo
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from cybertools.integrator.interfaces import IContainerFactory
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from cybertools.integrator.interfaces import IItemFactory, IFileFactory
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baseAttributes = ['__class__', 'name', 'id', 'descr', 'notes',
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'bound_sub_artifacts', 'creator', 'owner', 'owners',
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'ctime', 'mtime', 'atime', 'lastEvent', 'createEvent',
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'lastChange', 'lastMove', 'location', 'containers', 'access']
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minimalAttributes = ['__class__', 'name', 'id', 'descr', 'mtime']
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additionalAttributes = ['banner', 'moderated', 'ratings']
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documentAttributes = ['vid', 'vstore', 'file_extensions', 'size', 'encoding', 'type']
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urlAttributes = ['url_link', 'last_verified', 'last_error', 'content_length',
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'content_type', 'content_encoding', 'last_modified']
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standardAttributes = ['__class__', 'type', 'id', 'name', 'descr',
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'ctime', 'mtime', 'creator', 'owner', 'owners',
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'url_link', 'size', 'encoding',
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'containers', 'location']
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classes = ['cl_core.Folder', 'cl_core.Document', 'cl_core.URL', ]
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class BSCWConnection(object):
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factoryName = 'bscw'
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baseURL = rootId = ''
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def __init__(self, url, server=None):
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self.repositoryURL = url
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self.setURLs()
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if server is None:
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server = ServerProxy(self.baseURL)
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self.server = server
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def getRepositoryURL(self):
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return self.repositoryURL
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def setURLs(self):
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url = self.getRepositoryURL()
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if url:
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baseURL, self.rootId = url.rsplit('/', 1)
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self.baseURL = baseURL.split('/bscw.cgi', 1)[0] + '/bscw.cgi'
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def getItem(self, address, nested=True):
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try:
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item = self.server.get_attributes(address, standardAttributes, 1, nested)
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except Fault, excp:
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item = None
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excpInfo = str(excp)
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if "No permission: (403, 'No_Access')" in excpInfo:
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pass
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else:
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info = '%s - server: %s, address: %s.' % (excpInfo, self.server, address)
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logging.getLogger('cybertools.integrator.bscw').warn(info)
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except Exception, excp:
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excpInfo = str(excp)
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info = '%s - server: %s, address: %s.' % (excpInfo, self.server, address)
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logging.getLogger('cybertools.integrator.bscw').error(info)
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item = None
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return item
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def getProxy(self, item=None, address=None, parentPath='', nested=True):
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if item is None:
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if address is None:
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address = self.rootId
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items = self.getItem(address, nested=nested)
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if items:
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item = items[0]
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else:
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return None
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address = item['id']
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itemType = item['__class__'].split('.')[-1]
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internalPath = '/'.join((parentPath, address)).strip('/')
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params = dict(connection=self, internalPath=internalPath,
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properties=item, baseURL=self.baseURL,
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itemType=itemType)
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if itemType == 'Folder':
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return self.containerFactory(address, **params)
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elif itemType == 'Document':
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return self.fileFactory(address, contentType=item['type'],
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**params)
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else:
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return self.itemFactory(address, **params)
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@Lazy
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def itemFactory(self):
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return component.getUtility(IItemFactory, name=self.factoryName)
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@Lazy
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def fileFactory(self):
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return component.getUtility(IFileFactory, name=self.factoryName)
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@Lazy
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def containerFactory(self):
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return component.getUtility(IContainerFactory, name=self.factoryName)
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# proxy classes
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class BSCWProxyBase(object):
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@Lazy
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def externalURLInfo(self):
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id = self.address.lstrip('bs_')
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return ExternalURLInfo(self.baseURL, id)
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@Lazy
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def attributes(self):
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return self.connection.getItem(self.address)
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@Lazy
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def properties(self):
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return self.attributes[0]
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@Lazy
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def title(self):
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return self.properties['name']
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@Lazy
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def description(self):
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return self.properties.get('descr', u'')
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@Lazy
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def modified(self):
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dt = self.properties['mtime']
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return dt and datetime(*(strptime(str(dt), '%Y%m%dT%H:%M:%SZ')[0:6])) or ''
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@property
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def parents(self):
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if self.address.lstrip('bs_') == self.connection.rootId:
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return
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parentId = self.properties['location']['__id__'].lstrip('bs_')
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p = self.connection.getProxy(address=parentId, nested=False)
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while p is not None and parentId != self.connection.rootId:
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#while parentId != self.connection.rootId:
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yield p
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parentId = p.properties['location']['__id__'].lstrip('bs_')
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p = self.connection.getProxy(address=parentId)
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yield p
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class ReadContainer(BSCWProxyBase, ReadContainer):
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factoryName = 'bscw'
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@Lazy
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def data(self):
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data = self.attributes
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if len(data) > 1:
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return dict((item['id'], item) for item in data[1] if 'id' in item)
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else:
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return {}
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def keys(self):
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return self.data.keys()
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def __iter__(self):
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return iter(self.keys())
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def __getitem__(self, key):
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if key in self:
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return self.get(key)
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raise KeyError(key)
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def get(self, key, default=None):
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if key not in self.data:
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return default
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item = self.data[key]
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return self.connection.getProxy(item)
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def values(self):
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return sorted((self.get(k) for k in self),
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key=lambda x: (x.itemType != 'Folder', x.title.lower()))
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def __len__(self):
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return len(self.keys())
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def items(self):
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return [(k, self.get(k)) for k in self]
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def __contains__(self, key):
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return key in self.keys()
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class Item(BSCWProxyBase, Item):
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@property
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def icon(self):
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return self.itemType.lower()
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@Lazy
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def type(self):
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return 'unknown'
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class File(BSCWProxyBase, File):
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contentType = None
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def getData(self, num=None):
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try:
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data = self.connection.server.get_document(self.address).data
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except Fault, excp:
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info = '%s - server: %s, address: %s.' % (
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str(excp), self.connection.server, self.address)
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logging.getLogger('cybertools.integrator.bscw').warn(info)
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data = ''
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except Exception, excp:
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info = '%s - server: %s, address: %s.' % (
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str(excp), self.connection.server, self.address)
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logging.getLogger('cybertools.integrator.bscw').error(info)
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data = ''
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return data
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data = property(getData)
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def getSize(self):
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return 0
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class Image(File, Image):
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pass
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# factory classes
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class ContainerFactory(ContainerFactory):
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proxyClass = ReadContainer
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class ItemFactory(ItemFactory):
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proxyClass = Item
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class FileFactory(FileFactory):
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def __call__(self, address, **kw):
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contentType = kw.pop('contentType', 'application/octet-stream')
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if contentType.startswith('image/'):
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obj = Image(address, contentType, **kw)
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else:
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obj = File(address, contentType, **kw)
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obj.contentType = contentType
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return obj
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