1. There is one database per folder and sqlite requires to serialize the
writings. Instead of locking at LocalStatusSQLiteFolder instance level,
introduce a new DatabaseFileLock object which is shared across threads. This
fixes the concurrent writes issues that some users might experience by
duplications or flags restored to the previous state.
2. Close the database only when we are sure no other threads will use the
connection on a *per-file* basis. Previous fix 677afb8d8f is wrong
because the same lock is shared for all the database files.
Github-fix: https://github.com/OfflineIMAP/offlineimap/issues/350
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
This did not work and is not usefull since the purge() method was introduced in
1410a391bc. Actually, the purge() does what deletemessagelist() was supposed to
achieve.
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
When a maildir is removed it must be considered new for the sync. However, the
local cache of the folder remains. This means the sync of the folder removes all
the missing emails.
Avoid loosing of data for users not aware of the local cache by removing any
pre-existing status cache of a folder when we actually want to create the
database.
Improve style.
Github-fix: https://github.com/OfflineIMAP/offlineimap/issues/333
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
Make mbnames to work with intermediate files, one per account, in the JSON
format. The mbnames target is built from those intermediate files.
Github-Fix: https://github.com/OfflineIMAP/offlineimap/issues/66
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
There is no other way to make Python2 and Python3 happy, because syntax
raise E, V, T is incompatible with the latter.
Signed-off-by: Łukasz Żarnowiecki <dolohow@outlook.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
We currently close the database as soon as possible while we handle the status
backend but this is still too early because autorefresh induces looping on this
code block.
Instead of delaying the closing outside of the loop, it's easier to delay the
opening as late as possible (inside the loop). The downside is that the database
is opened/closed more than once when autorefresh is enabled. The good news is
that this make the code much easier.
Fixes regression introduces by 6fb5700.
Reported-by: Łukasz Żarnowiecki <dolohow@outlook.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
It is more readable and returns a list therefore it is compatible both
with Python 2 and 3.
Signed-off-by: Łukasz Żarnowiecki <dolohow@outlook.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
1. When using maxage, local and remote messagelists are supposed to only
contain messages from at most maxage days ago. But local and remote used
different timezones to calculate what "maxage days ago" means, resulting
in removals on one side. Now, we ask the local folder for maxage days'
worth of mail, find the lowest UID, and then ask the remote folder for
all UID's starting with that lowest one.
2. maxage was fundamentally wrong in the IMAP-IMAP case: it assumed that
remote messages have UIDs in the same order as their local counterparts,
which could be false, e.g. when messages are copied in quick succession.
So, remove support for maxage in the IMAP-IMAP case.
3. Add startdate option for IMAP-IMAP syncs: use messages from the given
repository starting at startdate, and all messages from the other
repository. In the first sync, the other repository must be empty.
4. Allow maxage to be specified either as number of days to sync (as
previously) or as a fixed date.
Signed-off-by: Janna Martl <janna.martl109@gmail.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
The basic problem is in the context of syncing multiple accounts where
one is fast and the others are slower (due to the number of folders).
When the fast account completes, the other accounts are partially written
through the list and if the file is read during this time, the list can
be useless. However, in the general case, the file is probably left
around from a previous run of offlineimap and is more correct, so add an
option to leave it alone until all syncing is done.
Incremental is still the default since this running offlineimap using
its own timer setup is likely the most common setup. Turning it off
works best with one-shot mode triggered by cron or systemd timers.
Signed-off-by: Ben Boeckel <mathstuf@gmail.com>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
We usually mutate some exceptions to OfflineImapError() and it is
a whole lot better if such exception will show up with the original
traceback, so all valid occurrences of such mutations were transformed
to the 3-tuple form of "raise". Had also added coding guidelines
document where this re-raise strategy is documented.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
- Multi-line documentation for functions and methods
now has ending triple-double-quotes on an own line,
as per PEP 257.
- Added documentation and comments to almost all functions
and methods.
- Added stub implementations for getconfig() and getsection()
inside CustomConfig.ConfigHelperMixin to provide sane
run-time diagnostics for classes that doesn't implement them.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
For cases like
http://article.gmane.org/gmane.mail.imap.offlineimap.general/6468
it is beneficial to see that folder name was translated and the result
of this translation on a single line: having log like
{{{
Folder Boring/Wreck [acc: tmarble@info9.net]:
Syncing Boring/Breck: Gmail -> Maildir
}}}
with translated name on the "Folder" line and original one on the
"Syncing" line isn't very intuitive.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
Make external API of class/module to be smaller, explicitely mark
all internal functions. Also annotate methods that are implemented
as the part of the parent class interface.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
It is called localfolders and holds expanded name for the same
variable for the local repository of the account that is being
processed.
GitHub issue: https://github.com/OfflineIMAP/offlineimap/issues/21
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
This eases testing of option values inside the code. This instance
is implemented as the read-only copy of the obtained 'options' object,
so callers won't be able to modify its contents.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
The problem lies in the fact that offlineimap.folder.Base's method
syncmessagesto_copy() uses threaded code everytime it is suggested by
the derived class's suggeststhreads() (currently, only IMAP does this
suggestion), but offlineimap/init.py will not spawn the
exitnotifymonitorloop() from offlineimap.threadutil.
The root cause is that ExitNotifyThread-derived threads need
offlineimap.threadutil's exitnotifymonitorloop() to be running the
cleaner for the exitthreads Queue(), because it fills the queue via
the run() method from this class: it wants to put() itself to the
Queue on exit, so when no exitnotifymonitorloop() is running, the
queue will fill up. And if this thread is an instance of
InstanceLimitedThread that hits the limit on the number of threads,
then it will hold the instancelimitedsems[] semaphore will prevent
other InstanceLimitedThread()s of the same name to pass its start()
method.
The fix is to avoid using threaded code if we're running
single-threaded.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
Obtained-from: X-Ryl669 <boite.pour.spam@gmail.com>
Previous commit e7ca5b25cb combined
checks for filtered folders in one place. However, it turns out there
was a reason to have them separate. getfolder() on a non-existent Maildir
fails and there might not be an equivalent local Maildir folder for a
filtered out IMAP folder.
Fix this by first checking if the remote folder should be filtered, and
only then retrieving the local folder (which should exist then).
This bug was found by our test suite!
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
- Factor out the code to find a local folder given a remote folder
Patch by Dave, split and modified by Sebastian.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
If we ask twice for a LocalStatusFolder via getfolder(), we would
get a newly created instance each time. This can lead to problems,
as e.g. write locks protecting files only work within the same Folder
instance. Make it so, that we cache all Folder instances that we have
asked for and hand back the existing one if we ask again for it,
rather than recreate a new instance.
Also, make getfolders() a noop for LocalStatus. We attempted to
derive the foldername from the name of the LocalStatusfile. However,
this is not really possible, as we do file name mangling
(".$" -> "dot", "/" -> ".") and there is no way to get the original folder
name from the LocalStatus file name anyway.
This commit could potentially solve the "file not found" errors, that people
have been seeing with their LocalStatusCache files. If we have 2
instances of a LocalStatusFolder pointing to the same file, our locking
system would not work.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
If we throw an OfflineImapError in case of the Repository()
initialization, we display the nice error message and exit rather
than bomb out with a traceback. Misconfiguring a repository name in
the configuration file is now nicely pointed out to the user.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
1) Set attribute self.dryrun depending on whether we are in dry-run mode.
2) Don't actually call hooks in --dry-run (just log what you would
invoke
3) Don't write out the mbnames file in --dry-run mode.
Repository, and Folder levels still need to be protected in dry-run mode
as of now.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
We do not use ui.locked() anymore to output an error message, the text comes
directly from the exception.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
Rename getuidvalidity -> get_uidvalidity and cache the IMAP result.
1) Start modernizing our function names using more underscores
2) IMAPs implementation of get_uidvalidity was removing the UIDVALIDITY result
from the imaplib2 result stack, so subsequent calls would return "None".
As various functions can invoke this, this led to some errors that we
avoid by caching the current UIDVALIDITY value in the Folder instance.
There are more simplifications and improvements to be made.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
Rather than to write out the nametrans'lated folder names for mbnames,
we now write out the local untransformed box names. This is generally
what we want. This became relevant since we support nametrans rules on
the local side since only a short time. Reported by Paul Collignan.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
Remove the old global locking system. We lock only the accounts that we
currently sync, so you can invoke OfflineImap multiple times now as long
as you sync different accounts. This system is compatible with all
releases >= 6.4.0, so don't run older releases simultanous to this one.
This mostly reverts commit 0d95651417,
disabling the old global lock system that we had in parallel to the new one.
Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
