Merge branch 'ss/sync-remove-neguid-pass' into next
This commit is contained in:
Nicolas Sebrecht
commit
b2be0c3697
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@ -16,6 +16,10 @@ New Features
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Changes
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-------
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* Reduced our sync logic from 4 passes to 3 passes (integrating upload of
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"new" and "existing" messages into one function). This should result in a
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slight speedup.
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Bug Fixes
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---------
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@ -222,81 +222,6 @@ class BaseFolder:
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for uid in uidlist:
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self.deletemessage(uid)
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def syncmessagesto_neguid_msg(self, uid, dstfolder, statusfolder,
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register = 1):
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"""Copy a single message from self to dests.
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This is called by meth:`syncmessagesto_neguid`, possibly in a
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new thread. It does not return anything.
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:param dstfolder: A BaseFolder-derived instance
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:param statusfolder: A LocalStatusFolder instance
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:param register: If True, output that a new thread was created
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(and register it with the ui)."""
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successobject = None
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successuid = None
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if register:
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self.ui.registerthread(self.getaccountname())
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self.ui.copyingmessage(uid, self, [dstfolder])
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message = self.getmessage(uid)
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flags = self.getmessageflags(uid)
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rtime = self.getmessagetime(uid)
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#Save messages to dstfolder and see if a valid UID was returned
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successuid = dstfolder.savemessage(uid, message, flags, rtime)
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#Succeeded? -> IMAP actually assigned a UID
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#If successuid remained negative, no server was willing to assign us
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#an UID. Ignore message.
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if successuid >= 0:
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# Copy the message to the statusfolder
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statusfolder.savemessage(successuid, message, flags, rtime)
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# Copy to its new name son the local server and delete
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# the one without a UID.
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self.savemessage(successuid, message, flags, rtime)
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#TODO: above means, we read in the message and write it out
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#to the very same dir with a different UID. Investigate if we
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#cannot simply rename it.
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# delete the negative uid message. We have it with a good UID now.
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self.deletemessage(uid)
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def syncmessagesto_neguid(self, dstfolder, statusfolder):
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"""Pass 1 of folder synchronization.
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Look for messages in self with a negative uid. These are
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messages in Maildirs that were not added by us. Try to add them
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to the dstfolder. If that succeeds, get the new UID, add
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it to the statusfolder, add it to local for real, and delete the
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old fake (negative) one.
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:param dstfolder: A BaseFolder-derived instance
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:param statusfolder: A LocalStatusFolder instance"""
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uidlist = [uid for uid in self.getmessageuidlist() if uid < 0]
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threads = []
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for uid in uidlist:
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if dstfolder.suggeststhreads():
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dstfolder.waitforthread()
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thread = threadutil.InstanceLimitedThread(\
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dstfolder.getcopyinstancelimit(),
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target = self.syncmessagesto_neguid_msg,
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name = "New msg sync from %s" % self.getvisiblename(),
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args = (uid, dstfolder, statusfolder))
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thread.setDaemon(1)
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thread.start()
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threads.append(thread)
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else:
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self.syncmessagesto_neguid_msg(uid, dstfolder, statusfolder,
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register = 0)
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#wait for all uploads to finish
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for thread in threads:
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thread.join()
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def copymessageto(self, uid, dstfolder, statusfolder, register = 1):
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"""Copies a message from self to dst if needed, updating the status
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@ -311,33 +236,46 @@ class BaseFolder:
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# self.getmessage(). So, don't call self.getmessage unless
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# really needed.
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try:
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if register:
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if register: # output that we start a new thread
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self.ui.registerthread(self.getaccountname())
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message = None
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flags = self.getmessageflags(uid)
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rtime = self.getmessagetime(uid)
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if dstfolder.uidexists(uid):
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if uid > 0 and dstfolder.uidexists(uid):
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# dst has message with that UID already, only update status
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statusfolder.savemessage(uid, None, flags, rtime)
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return
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# really need to copy to dst...
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self.ui.copyingmessage(uid, self, [dstfolder])
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# If any of the destinations actually stores the message body,
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# load it up.
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if dstfolder.storesmessages():
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message = self.getmessage(uid)
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message = self.getmessage(uid)
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#Succeeded? -> IMAP actually assigned a UID. If newid
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#remained negative, no server was willing to assign us an
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#UID. If newid is 0, saving succeeded, but we could not
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#retrieve the new UID. Ignore message in this case.
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newuid = dstfolder.savemessage(uid, message, flags, rtime)
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if newuid > 0 and newuid != uid:
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# Change the local uid.
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self.savemessage(newuid, message, flags, rtime)
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self.deletemessage(uid)
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uid = newuid
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statusfolder.savemessage(uid, message, flags, rtime)
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if newuid > 0:
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if newuid != uid:
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# Got new UID, change the local uid.
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#TODO: Maildir could do this with a rename rather than
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#load/save/del operation, IMPLEMENT a changeuid()
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#function or so.
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self.savemessage(newuid, message, flags, rtime)
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self.deletemessage(uid)
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uid = newuid
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# Save uploaded status in the statusfolder
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statusfolder.savemessage(uid, message, flags, rtime)
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else:
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raise UserWarning("Trying to save msg (uid %d) on folder "
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"%s returned invalid uid %d" % \
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(uid,
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dstfolder.getvisiblename(),
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newuid))
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except (KeyboardInterrupt):
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raise
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except:
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@ -347,10 +285,10 @@ class BaseFolder:
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raise
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def syncmessagesto_copy(self, dstfolder, statusfolder):
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"""Pass2: Copy locally existing messages
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"""Pass1: Copy locally existing messages not on the other side
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This will copy messages with a valid UID but are not on the
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other side yet. The strategy is:
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This will copy messages to dstfolder that exist locally but are
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not in the statusfolder yet. The strategy is:
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1) Look for messages present in self but not in statusfolder.
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2) invoke copymessageto() on those which:
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@ -359,7 +297,7 @@ class BaseFolder:
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"""
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threads = []
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copylist = filter(lambda uid: uid>=0 and not \
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copylist = filter(lambda uid: not \
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statusfolder.uidexists(uid),
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self.getmessageuidlist())
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for uid in copylist:
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@ -381,7 +319,7 @@ class BaseFolder:
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thread.join()
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def syncmessagesto_delete(self, dstfolder, statusfolder):
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"""Pass 3: Remove locally deleted messages on dst
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"""Pass 2: Remove locally deleted messages on dst
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Get all UIDS in statusfolder but not self. These are messages
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that were deleted in 'self'. Delete those from dstfolder and
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@ -397,7 +335,7 @@ class BaseFolder:
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folder.deletemessages(deletelist)
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def syncmessagesto_flags(self, dstfolder, statusfolder):
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"""Pass 4: Flag synchronization
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"""Pass 3: Flag synchronization
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Compare flag mismatches in self with those in statusfolder. If
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msg has a valid UID and exists on dstfolder (has not e.g. been
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@ -449,15 +387,12 @@ class BaseFolder:
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This is the high level entry for syncing messages in one direction.
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Syncsteps are:
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Pass1: Transfer new local messages
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Upload msg with negative/no UIDs to dstfolder. dstfolder
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might assign that message a new UID. Update statusfolder.
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Pass2: Copy locally existing messages
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Pass1: Copy locally existing messages
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Copy messages in self, but not statusfolder to dstfolder if not
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already in dstfolder. Update statusfolder.
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already in dstfolder. dstfolder might assign a new UID (e.g. if
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uploading to IMAP). Update statusfolder.
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Pass3: Remove locally deleted messages
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Pass2: Remove locally deleted messages
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Get all UIDS in statusfolder but not self. These are messages
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that were deleted in 'self'. Delete those from dstfolder and
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statusfolder.
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@ -466,18 +401,16 @@ class BaseFolder:
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uids present (except for potential negative uids that couldn't
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be placed anywhere).
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Pass4: Synchronize flag changes
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Pass3: Synchronize flag changes
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Compare flag mismatches in self with those in statusfolder. If
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msg has a valid UID and exists on dstfolder (has not e.g. been
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deleted there), sync the flag change to both dstfolder and
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statusfolder.
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:param dstfolder: Folderinstance to sync the msgs to.
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:param statusfolder: LocalStatus instance to sync against.
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"""
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passes = [('uploading negative UIDs', self.syncmessagesto_neguid),
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('copying messages' , self.syncmessagesto_copy),
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passes = [('copying messages' , self.syncmessagesto_copy),
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('deleting messages' , self.syncmessagesto_delete),
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('syncing flags' , self.syncmessagesto_flags)]
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@ -490,5 +423,4 @@ class BaseFolder:
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self.ui.warn("ERROR attempting to sync flags " \
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+ "for account " + self.getaccountname() \
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+ ":" + traceback.format_exc())
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raise
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@ -242,11 +242,6 @@ class MappingFolderMixIn:
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self._mb.deletemessages(self, self._uidlist(self.r2l, uidlist))
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self._mapped_delete(uidlist)
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#def syncmessagesto_neguid_msg(self, uid, dest, applyto, register = 1):
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# does not need changes because it calls functions that make the changes
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# same goes for all other sync messages types.
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# Define a class for local part of IMAP.
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class MappedIMAPFolder(MappingFolderMixIn, IMAPFolder):
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def __init__(self, *args, **kwargs):
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