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##############################################################################
#
# Copyright (c) 2002 Nexedi SARL and Contributors. All Rights Reserved.
# Sebastien Robin <seb@nexedi.com>
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsability of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# garantees and support are strongly adviced to contract a Free Software
# Service Company
#
# This program is Free Software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
##############################################################################
from Globals import PersistentMapping
from time import gmtime,strftime # for anchors
from SyncCode import SyncCode
from AccessControl import ClassSecurityInfo
from Products.CMFCore.utils import getToolByName
from Acquisition import Implicit, aq_base
from Products.ERP5Type.Document.Folder import Folder
from Products.ERP5Type.Base import Base
from Products.ERP5Type import Permissions
from Products.ERP5Type import PropertySheet
from DateTime import DateTime
from zLOG import LOG
import md5
#class Conflict(SyncCode, Implicit):
class Conflict(SyncCode, Base):
"""
object_path : the path of the obect
keyword : an identifier of the conflict
publisher_value : the value that we have locally
subscriber_value : the value sent by the remote box
"""
def __init__(self, object_path=None, keyword=None, xupdate=None, publisher_value=None,\
subscriber_value=None, subscriber=None):
self.object_path=object_path
self.keyword = keyword
self.setLocalValue(publisher_value)
self.setRemoteValue(subscriber_value)
self.subscriber = subscriber
self.resetXupdate()
def getObjectPath(self):
"""
get the object path
"""
return self.object_path
def getPublisherValue(self):
"""
get the domain
"""
return self.publisher_value
def getXupdateList(self):
"""
get the xupdate wich gave an error
"""
xupdate_list = []
if len(self.xupdate)>0:
for xupdate in self.xupdate:
xupdate_list+= [xupdate]
return xupdate_list
def resetXupdate(self):
"""
Reset the xupdate list
"""
self.xupdate = PersistentMapping()
def setXupdate(self, xupdate):
"""
set the xupdate
"""
if xupdate == None:
self.resetXupdate()
else:
self.xupdate = self.getXupdateList() + [xupdate]
def setXupdateList(self, xupdate):
"""
set the xupdate
"""
self.xupdate = xupdate
def setLocalValue(self, value):
"""
get the domain
"""
try:
self.publisher_value = value
except TypeError: # It happens when we try to store StringIO
self.publisher_value = None
def getSubscriberValue(self):
"""
get the domain
"""
return self.subscriber_value
def setRemoteValue(self, value):
"""
get the domain
"""
try:
self.subscriber_value = value
except TypeError: # It happens when we try to store StringIO
self.subscriber_value = None
def applyPublisherValue(self):
"""
after a conflict resolution, we have decided
to keep the local version of this object
"""
p_sync = getToolByName(self,'portal_synchronizations')
p_sync.applyPublisherValue(self)
def applyPublisherDocument(self):
"""
after a conflict resolution, we have decided
to keep the local version of this object
"""
p_sync = getToolByName(self,'portal_synchronizations')
p_sync.applyPublisherDocument(self)
def getPublisherDocument(self):
"""
after a conflict resolution, we have decided
to keep the local version of this object
"""
p_sync = getToolByName(self,'portal_synchronizations')
return p_sync.getPublisherDocument(self)
def getPublisherDocumentPath(self):
"""
after a conflict resolution, we have decided
to keep the local version of this object
"""
p_sync = getToolByName(self,'portal_synchronizations')
return p_sync.getPublisherDocumentPath(self)
def getSubscriberDocument(self):
"""
after a conflict resolution, we have decided
to keep the local version of this object
"""
p_sync = getToolByName(self,'portal_synchronizations')
return p_sync.getSubscriberDocument(self)
def getSubscriberDocumentPath(self):
"""
after a conflict resolution, we have decided
to keep the local version of this object
"""
p_sync = getToolByName(self,'portal_synchronizations')
return p_sync.getSubscriberDocumentPath(self)
def applySubscriberDocument(self):
"""
after a conflict resolution, we have decided
to keep the local version of this object
"""
p_sync = getToolByName(self,'portal_synchronizations')
p_sync.applySubscriberDocument(self)
def applySubscriberValue(self,object=None):
"""
get the domain
"""
p_sync = getToolByName(self,'portal_synchronizations')
p_sync.applySubscriberValue(self,object=object)
def setSubscriber(self, subscriber):
"""
set the domain
"""
self.subscriber = subscriber
def getSubscriber(self):
"""
get the domain
"""
return self.subscriber
def getKeyword(self):
"""
get the domain
"""
return self.keyword
def getPropertyId(self):
"""
get the property id
"""
return self.keyword
class Signature(SyncCode,Folder):
"""
status -- SENT, CONFLICT...
md5_object -- An MD5 value of a given document
#uid -- The UID of the document
id -- the ID of the document
gid -- the global id of the document
rid -- the uid of the document on the remote database,
only needed on the server.
xml -- the xml of the object at the time where it was synchronized
"""
# Constructor
def __init__(self,gid=None, id=None, status=None, xml_string=None):
self.setGid(gid)
self.setId(id)
self.status = status
self.setXML(xml_string)
self.partial_xml = None
self.action = None
self.setTempXML(None)
self.resetConflictList()
self.md5_string = None
self.force = 0
self.setSubscriberXupdate(None)
self.setPublisherXupdate(None)
Folder.__init__(self,id)
def setStatus(self, status):
"""
set the Status (see SyncCode for numbers)
"""
self.status = status
if status == self.SYNCHRONIZED:
temp_xml = self.getTempXML()
self.setForce(0)
if temp_xml is not None:
# This happens when we have sent the xml
# and we just get the confirmation
self.setXML(self.getTempXML())
self.setTempXML(None)
self.setPartialXML(None)
self.setSubscriberXupdate(None)
self.setPublisherXupdate(None)
if len(self.getConflictList())>0:
self.resetConflictList()
# XXX This may be a problem, if the document is changed
# during a synchronization
self.setLastSynchronizationDate(DateTime())
if status == self.NOT_SYNCHRONIZED:
self.setTempXML(None)
self.setPartialXML(None)
elif status in (self.PUB_CONFLICT_MERGE,self.SENT):
# We have a solution for the conflict, don't need to keep the list
self.resetConflictList()
def getStatus(self):
"""
get the Status (see SyncCode for numbers)
"""
return self.status
def getForce(self):
"""
get the force value (if we need to force update or not)
"""
return self.force
def setForce(self, force):
"""
set the force value (if we need to force update or not)
"""
self.force = force
def getLastModificationDate(self):
"""
get the last modfication date, so that we don't always
check the xml
"""
return getattr(self,'modification_date',None)
def setLastModificationDate(self,value):
"""
set the last modfication date, so that we don't always
check the xml
"""
setattr(self,'modification_date',value)
def getLastSynchronizationDate(self):
"""
get the last modfication date, so that we don't always
check the xml
"""
return getattr(self,'synchronization_date',None)
def setLastSynchronizationDate(self,value):
"""
set the last modfication date, so that we don't always
check the xml
"""
setattr(self,'synchronization_date',value)
def setXML(self, xml):
"""
set the XML corresponding to the object
"""
self.xml = xml
if self.xml != None:
self.setTempXML(None) # We make sure that the xml will not be erased
self.setMD5(xml)
def getXML(self):
"""
set the XML corresponding to the object
"""
return self.xml
def setTempXML(self, xml):
"""
This is the xml temporarily saved, it will
be stored with setXML when we will receive
the confirmation of synchronization
"""
self.temp_xml = xml
def getTempXML(self):
"""
get the temp xml
"""
return self.temp_xml
def setSubscriberXupdate(self, xupdate):
"""
set the full temp xupdate
"""
self.subscriber_xupdate = xupdate
def getSubscriberXupdate(self):
"""
get the full temp xupdate
"""
return self.subscriber_xupdate
def setPublisherXupdate(self, xupdate):
"""
set the full temp xupdate
"""
self.publisher_xupdate = xupdate
def getPublisherXupdate(self):
"""
get the full temp xupdate
"""
return self.publisher_xupdate
def setMD5(self, xml):
"""
set the MD5 object of this signature
"""
self.md5_string = md5.new(xml).digest()
def getMD5(self):
"""
get the MD5 object of this signature
"""
return self.md5_string
def checkMD5(self, xml_string):
"""
check if the given md5_object returns the same things as
the one stored in this signature, this is very usefull
if we want to know if an objects has changed or not
Returns 1 if MD5 are equals, else it returns 0
"""
return ((md5.new(xml_string).digest()) == self.getMD5())
def setRid(self, rid):
"""
set the rid
"""
self.rid = rid
def getRid(self):
"""
get the rid
"""
return self.rid
def setId(self, id):
"""
set the id
"""
self.id = id
def getId(self):
"""
get the id
"""
return self.id
def setGid(self, gid):
"""
set the id
"""
self.gid = gid
def getGid(self):
"""
get the id
"""
return self.gid
def setPartialXML(self, xml):
"""
Set the partial string we will have to
deliver in the future
"""
if type(xml) is type(u'a'):
xml = xml.encode('utf-8')
self.partial_xml = xml
def getPartialXML(self):
"""
Set the partial string we will have to
deliver in the future
"""
#LOG('Subscriber.getPartialXML',0,'partial_xml: %s' % str(self.partial_xml))
if self.partial_xml is not None:
self.partial_xml = self.partial_xml.replace('@-@@-@','--') # need to put back '--'
return self.partial_xml
def getAction(self):
"""
Return the actual action for a partial synchronization
"""
return self.action
def setAction(self, action):
"""
Return the actual action for a partial synchronization
"""
self.action = action
def getConflictList(self):
"""
Return the actual action for a partial synchronization
"""
conflict_list = []
if len(self.conflict_list)>0:
for conflict in self.conflict_list:
conflict_list += [conflict]
return conflict_list
def resetConflictList(self):
"""
Return the actual action for a partial synchronization
"""
self.conflict_list = PersistentMapping()
def setConflictList(self, conflict_list):
"""
Return the actual action for a partial synchronization
"""
LOG('setConflictList, list',0,conflict_list)
if conflict_list is None or conflict_list==[]:
self.resetConflictList()
else:
self.conflict_list = conflict_list
def delConflict(self, conflict):
"""
Return the actual action for a partial synchronization
"""
LOG('delConflict, conflict',0,conflict)
conflict_list = []
for c in self.getConflictList():
LOG('delConflict, c==conflict',0,c==aq_base(conflict))
if c != aq_base(conflict):
conflict_list += [c]
if conflict_list != []:
self.setConflictList(conflict_list)
else:
self.resetConflictList()
def addSubscription( self, id, title='', REQUEST=None ):
"""
Add a new Category and generate UID by calling the
ZSQLCatalog
"""
o = Subscription( id ,'','','','','','')
self._setObject( id, o )
if REQUEST is not None:
return self.manage_main(self, REQUEST, update_menu=1)
return o
#class Subscription(SyncCode, Implicit):
class Subscription(SyncCode, Implicit, Folder):
"""
Subscription hold the definition of a master ODB
from/to which a selection of objects will be synchronised
Subscription defined by::
publication_url -- a URI to a publication
subsribtion_url -- URL of ourselves
destination_path -- the place where objects are stored
query -- a query which defines a local set of documents which
are going to be synchronised
xml_mapping -- a PageTemplate to map documents to XML
gpg_key -- the name of a gpg key to use
Subscription also holds private data to manage
the synchronisation. We choose to keep an MD5 value for
all documents which belong to the synchronisation process::
signatures -- a dictionnary which contains the signature
of documents at the time they were synchronized
session_id -- it defines the id of the session
with the server.
last_anchor - it defines the id of the last synchronisation
next_anchor - it defines the id of the current synchronisation
"""
meta_type='ERP5 Subscription'
portal_type='Subscription' # may be useful in the future...
isPortalContent = 1
isRADContent = 1
icon = None
# Declarative properties
property_sheets = ( PropertySheet.Base
, PropertySheet.SimpleItem )
allowed_types = ( 'Signatures',)
# Declarative constructors
constructors = (addSubscription,)
# Declarative security
security = ClassSecurityInfo()
security.declareProtected(Permissions.ManagePortal,
'manage_editProperties',
'manage_changeProperties',
'manage_propertiesForm',
)
# Constructor
def __init__(self, id, title, publication_url, subscription_url, destination_path, query, xml_mapping, gpg_key):
"""
We need to create a dictionnary of
signatures of documents which belong to the synchronisation
process
"""
self.id = id
self.publication_url = (publication_url)
self.subscription_url = str(subscription_url)
self.destination_path = str(destination_path)
self.setQuery(query)
self.xml_mapping = xml_mapping
self.anchor = None
self.session_id = 0
#self.signatures = PersistentMapping()
self.last_anchor = '00000000T000000Z'
self.next_anchor = '00000000T000000Z'
self.domain_type = self.SUB
self.gpg_key = gpg_key
self.setGidGenerator(None)
self.setIdGenerator(None)
Folder.__init__(self, id)
self.title = title
#self.signatures = PersitentMapping()
def getTitle(self):
"""
getter for title
"""
return getattr(self,'title',None)
def setTitle(self, value):
"""
setter for title
"""
self.title = value
# Accessors
def getRemoteId(self, id, path=None):
"""
Returns the remote id from a know local id
Returns None if...
path allows to implement recursive sync
"""
pass
def getSynchronizationType(self, default=None):
"""
"""
# XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
# XXX for debugging only, to be removed
dict_sign = {}
for o in self.objectValues():
dict_sign[o.getId()] = o.getStatus()
LOG('getSignature',0,'signatures_status: %s' % str(dict_sign))
# XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
code = self.SLOW_SYNC
if len(self.objectValues()) > 0:
code = self.TWO_WAY
if default is not None:
code = default
LOG('Subscription',0,'getSynchronizationType: %s' % code)
return code
def checkCorrectRemoteSessionId(self, session_id):
"""
We will see if the last session id was the same
wich means that the same message was sent again
return 1 if the session id was not seen, 0 if already seen
"""
last_session_id = getattr(self,'last_session_id',None)
if last_session_id == session_id:
return 0
self.last_session_id = session_id
return 1
def getLastSentMessage(self):
"""
This is the getter for the last message we have sent
"""
return getattr(self,'last_sent_message','')
def setLastSentMessage(self,xml):
"""
This is the setter for the last message we have sent
"""
self.last_sent_message = xml
def getLocalId(self, rid, path=None):
"""
Returns the local id from a know remote id
Returns None if...
"""
pass
def getId(self):
"""
return the ID
"""
return self.id
def getDomainType(self):
"""
return the ID
"""
return self.domain_type
def setId(self, id):
"""
set the ID
"""
self.id = id
def getQuery(self):
"""
return the query
"""
return self.query
def getGPGKey(self):
"""
return the gnupg key name
"""
return getattr(self,'gpg_key','')
def setGPGKey(self, value):
"""
setter for the gnupg key name
"""
self.gpg_key = value
def setQuery(self, query):
"""
set the query
"""
if query in (None,''):
query = 'objectValues'
self.query = query
def getPublicationUrl(self):
"""
return the publication url
"""
return self.publication_url
def getLocalUrl(self):
"""
return the publication url
"""
return self.publication_url
def setPublicationUrl(self, publication_url):
"""
return the publication url
"""
self.publication_url = publication_url
def getXMLMapping(self):
"""
return the xml mapping
"""
xml_mapping = getattr(self,'xml_mapping','asXML')
return xml_mapping
def setXMLMapping(self, xml_mapping):
"""
return the xml mapping
"""
self.xml_mapping = xml_mapping
def setGidGenerator(self, method):
"""
This set the method name wich allows to find a gid
from any object
"""
if method in (None,''):
method = 'getId'
self.gid_generator = method
def getGidGenerator(self):
"""
This get the method name wich allows to find a gid
from any object
"""
return self.gid_generator
def getGidFromObject(self, object):
"""
"""
o_base = aq_base(object)
o_gid = None
LOG('getGidFromObject',0,'gidgenerator : %s' % repr(self.getGidGenerator()))
gid_gen = self.getGidGenerator()
if callable(gid_gen):
o_gid=gid_gen(object)
elif hasattr(o_base, gid_gen):
LOG('getGidFromObject',0,'there is the gid generator')
generator = getattr(object, self.getGidGenerator())
o_gid = generator()
LOG('getGidFromObject',0,'o_gid: %s' % repr(o_gid))
return o_gid
def getObjectFromGid(self, gid):
"""
This tries to get the object with the given gid
This uses the query if it exist
"""
signature = self.getSignature(gid)
# First look if we do already have the mapping between
# the id and the gid
object_list = self.getObjectList()
destination = self.getDestination()
LOG('getObjectFromGid',0,'gid: %s' % repr(gid))
if signature is not None:
o_id = signature.getId()
o = None
try:
o = destination._getOb(o_id)
except (AttributeError, KeyError, TypeError):
pass
if o is not None and o in object_list:
return o
for o in object_list:
LOG('getObjectFromGid',0,'working on : %s' % repr(o))
o_gid = self.getGidFromObject(o)
if o_gid == gid:
return o
LOG('getObjectFromGid',0,'returning None')
return None
def getObjectList(self):
"""
This returns the list of sub-object corresponding
to the query
"""
destination = self.getDestination()
query = self.getQuery()
query_list = []
if type(query) is type('a'):
query_method = getattr(destination,query,None)
if query_method is not None:
query_list = query_method()
if callable(query):
query_list = query(destination)
return filter(lambda x: x.id.find('conflict_copy')<0,query_list)
# if query is not None:
# query_list = query()
# return query_list
def generateNewIdWithGenerator(self, object=None,gid=None):
"""
This tries to generate a new Id
"""
LOG('generateNewId, object: ',0,object.getPhysicalPath())
id_generator = self.getIdGenerator()
LOG('generateNewId, id_generator: ',0,id_generator)
if id_generator is not None:
o_base = aq_base(object)
new_id = None
if callable(id_generator):
new_id = id_generator(object)
elif hasattr(o_base, id_generator):
generator = getattr(object, id_generator)
new_id = generator()
LOG('generateNewId, new_id: ',0,new_id)
return new_id
return None
def setIdGenerator(self, method):
"""
This set the method name wich allows to generate
a new id
"""
self.id_generator = method
def getIdGenerator(self):
"""
This get the method name wich allows to generate a new id
"""
return self.id_generator
def getSubscriptionUrl(self):
"""
return the subscription url
"""
return self.subscription_url
def setSubscriptionUrl(self, subscription_url):
"""
set the subscription url
"""
self.subscription_url = subscription_url
def getDestinationPath(self):
"""
return the destination path
"""
return self.destination_path
def getDestination(self):
"""
return the destination object itself
"""
return self.unrestrictedTraverse(self.getDestinationPath())
def setDestinationPath(self, destination_path):
"""
set the destination path
"""
self.destination_path = destination_path
def getSubscription(self):
"""
return the current subscription
"""
return self
def getSessionId(self):
"""
return the session id
"""
self.session_id += 1
return self.session_id
def getLastAnchor(self):
"""
return the id of the last synchronisation
"""
return self.last_anchor
def getNextAnchor(self):
"""
return the id of the current synchronisation
"""
return self.next_anchor
def setLastAnchor(self, last_anchor):
"""
set the value last anchor
"""
self.last_anchor = last_anchor
def setNextAnchor(self, next_anchor):
"""
set the value next anchor
"""
# We store the old next anchor as the new last one
self.last_anchor = self.next_anchor
self.next_anchor = next_anchor
def NewAnchor(self):
"""
set a new anchor
"""
self.last_anchor = self.next_anchor
self.next_anchor = strftime("%Y%m%dT%H%M%SZ", gmtime())
def resetAnchors(self):
"""
reset both last and next anchors
"""
self.last_anchor = self.NULL_ANCHOR
self.next_anchor = self.NULL_ANCHOR
def addSignature(self, signature):
"""
add a Signature to the subscription
"""
if signature.getGid() in self.objectIds():
self._delObject(signature.getGid())
self._setObject( signature.getGid(), signature )
def delSignature(self, gid):
"""
add a Signature to the subscription
"""
#del self.signatures[gid]
self._delObject(gid)
def getSignature(self, gid):
"""
add a Signature to the subscription
"""
o = None
if gid in self.objectIds():
o = self._getOb(gid)
return o
def getSignatureList(self):
"""
add a Signature to the subscription
"""
return self.objectValues()
def hasSignature(self, gid):
"""
Check if there's a signature with this uid
"""
#return self.signatures.has_key(gid)
return gid in self.objectIds()
def resetAllSignatures(self):
"""
Reset all signatures
"""
#self.signatures = PersistentMapping()
for o in self.objectValues():
self._delObject(o.id)
def getGidList(self):
"""
Returns the list of ids from signature
"""
return self.objectIds()
def getConflictList(self):
"""
Return the list of all conflicts from all signatures
"""
conflict_list = []
for signature in self.getSignatureList():
conflict_list += signature.getConflictList()
return conflict_list
def startSynchronization(self):
"""
Set the status of every object as NOT_SYNCHRONIZED
"""
for o in self.objectValues():
# Change the status only if we are not in a conflict mode
if not(o.getStatus() in (self.CONFLICT,self.PUB_CONFLICT_MERGE,
self.PUB_CONFLICT_CLIENT_WIN)):
o.setStatus(self.NOT_SYNCHRONIZED)
o.setPartialXML(None)
o.setTempXML(None)