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Batch support is optional. This commit adds a 'batching' configuration
option to disable it.
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This commit adds checking for consistency on batch. When a doc is needed
during a batched sync and it doesnt exists on database, current code
will make a partial batch to avoid processing like it doesnt exist.
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Using _bulk_docs api from CouchDB we can put all docs at a single
request. Also, prefetching all ids removes the need to HEAD
requests during the batch.
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Created two methods on the backend to start and finish a batch. A dict of
callbacks is available to defer actions for the last document, allowing
temporary (changing often) metadata to be recorded only once.
Using those methods we will also be able to put all docs in one go on
the CouchDatabase implementation, but that is another step.
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u1db provides batching by default. Current Soledad HTTPS Sync Target was
stuck at 1 doc per request. This commit adds batching capability,
limiting the size to a predefined value.
Default limit size: 500kB
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This line was missing an yield and without it we end up inserting a
document that is being retrieved and bad things happen.
This is the core fix from yesterday debugging session. During sequential
syncs the pool was inserting and querying at the same time and sometimes
repeating or failing to delete documents.
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On real usage the docs will arrive shuffled and pool will be reused
after many decrypts. This test asserts that everything ended up clear
between execution and no inconsistency is left over for the next run.
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If we reset the vars after firing the finish callback, other thread can pick
up a dirty state on due concurrency.
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This new test case will run the single insert test 5 times to ensure
that using the same pool again is fine. This is needed due failures
to shutdown the pool or inconsistency between syncs.
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This info can be changed by another syncing replica and would not
reflect real database generation. That would be ok inside of the same
sync, but can cause trouble on concurrent syncs.
The other calls are ok, since they hold info that doesnt change during
concurrent syncs or are only read/write by the replica syncing. A global
cache could fit better this removed case, but for now let's stay on the
safe side.
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The new BackendNotReadyError didn't have a status or a wire
description, because of that, when you tried to use the
leap.soledad.server package it would break trying to import
this exception (because the annotation tries to use this
variable). This was preventing soledad server from starting
at all, after this change it works again
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Current code was tested on couch 1.6 and a monkeypatch got removed
during refactor. This commit re-adds it, but in a separate module that
is intended to hold temporary code for compatibility that can be removed
on version upgrades.
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since the exception doesn't have the code and description, it breaks.
we don't need those since the couch child exception describes them.
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by subclassing the MissingDesignDocError, we don't have to import the
soledad.common.couch submodule into the soledad.client.sync
- Resolves: #7626
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- Releases: 0.8.0
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- Releases: 0.8.0
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Creating a database was using a unnecessary complex try/except logic.
Simplifying it should make the purpose more clear.
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When retrieving other replica info the cache wasnt being used, but when
saving it was. This commit applies caching on get as well.
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Creating a resource from a path to use get_json causes a lot of dirty
code and unexplained things like response[2]. This commit extracts that
logic into a helper to let it more clear about what is happening.
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Added tests for this token verification as it wasn't covered. Then moved
it to the new couch module that implements a couch storage.
The ServerState was chosen to hold the verify_token method.
CouchServerState holds the current implementation, which is called on
authentication middleware as the new test shows.
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errors.py was holding a few specific CouchDB errors, now moved into
couch.errors module. Also, some of CouchDatabase methods were declared
as private, but external classes needs them.
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As SoledadBackend is intended to be database agnostic, a new generic
document is now used instead of the old one made for CouchDB. The only
attribute that really relates to couch was couch_rev, removed on this
commit as it can be set on CouchDatabase implementation when needed.
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First step of splitting classes across files on common.
backend.py holds SoledadBackend (generic backend logic)
couch/ is now a directory with old code inside __init__.py and
CouchServerState on state.py
Also removed mock IndexedSoledadBackend, since Soledad does not support
indexing due to encryption on server side.
Also fixed DesignDocUnknownError to show up what is the message of the
original exception. It was being lost.
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CouchDatabase was renamed to SoledadBackend and a new class
CouchDatabase was created to hold all couchdb code. This should make
SoledadBackend less tied to database implementation. A few more
separations are needed to split into modules.
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This monkey patch was added to separate headers from content and use
them to PUT on couchdb. The original implementation makes it possible by
using two parameters in the constructor.
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CouchDocument is a subclass from SoledadDocument which holds conflicts,
making the server side aware of them. There is a module called document
on soledad.common that holds SoledadDocument. This commit moves
CouchDocument to its proper place.
Error raising logic and exceptions declarations are also moved into error
module inside common.
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Needed after the SSL monkeypatch removal at 3b869fb7f
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This was added for a Twisted 12 bug that should be gone by now.
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This parameter applies the ensure_database to all existing databases,
making all of them use the latest design documents.
This can be used to migrate security documents, update handlers or any
other kind of design document.
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LEAP Platform needs to granularly allow access on user database for
other services, like mx. This is now possible by editing
soledad-server.conf file. A new section 'database-security' was added
and it is parsed during 'create-user-db' to be set on security design
document, present on every per-user database.
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- Release: 0.8.0
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couchdb library relies on garbage collector to close remaining
connections. Somehow, caching the instance is avoiding gc to call
__del__ on underlying couchdb sessions.
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It was 3600s, but closing connections seems to yet depend on garbage
collection and now causes server to leak file handlers. 120s should be
enough to a sync session finish. Also, lowering this value will only
make very long syncs use more of couch every 2 minutes, while raising
this value will keep memory busy for useless time.
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MissingDesignDocError raised on get_sync_info due to a missing design
document will be handled by the server during sync.
Ensure is now False by default, and thus database creation can deliver
an empty one that will be ensured during sync, following the ensure
parameter.
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This error raises while getting info on target (or server) replica. On
previous implementation there was nothing to do here, but now that we
have db creation in place this error should be handled just like u1db
original implementation.
The reason is that db creation occurs during sync exchange, but before
this we try to ask for info and the code that checks for info raises an
error that will be used to signal the client that a database will be
created and that it must save the replica uid returned by server, after
sync exchange (where we send/fetch documents).
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- Release: 0.8.0
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MissingDesignDocError raised on get_sync_info due to a missing design
document will be handled by the server during sync.
Ensure is now False by default, and thus database creation can deliver
an empty one that will be ensured during sync, following the ensure
parameter.
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- Releas: 0.8.0
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ensure_ddocs is a privileged operation. The code was defaulting to True,
which caused unprivileged code to fail. This commit changes it to False,
forcing you to check your privileges and declare a new argument when
calling in order to ensure that this behavior is only supposed to happen
on privileged parts.
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- Resolves: #7509
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Wheezy is still at 0.8 and it is yet supported.
This commit changes all necessary calls from python-couchdb 1.0 back to
python-couchdb 0.8. We can migrate this back to simpler implementation
with python-couchdb 1.0 when support for wheezy is dropped.
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Wheezy has python-couchdb 0.8 and python-beaker 1.6.3.
Pinning them to avoid false positives on tests.
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