| Commit message (Collapse) | Author | Age |
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Instead of trying to actually flush queues, we send a special command
through the same queues as the other commands and can thus guarantee
that the respective commands have been processed without blocking
anything.
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By concentrating all communication to the source in one place we get rid
of several oddities.
* Quite a bit of duplication since both need access to the
synchronizationStore and the source.
* We currently have an akward locking in place because both classes
access the ync store. This is not easier to resolve cleanly.
* The live of resource implementers becomes easier.
* An implementation could elect to not use changereplay and always do a
full sync... (maybe?)
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complex than a simple key-value pair.
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This is the initial refactoring to improve how we deal with the storage.
It does a couple of things:
* Rename Sink::Storage to Sink::Storage::DataStore to free up the
Sink::Storage namespace
* Introduce a Sink::ResourceContext to have a single object that can be
passed around containing everything that is necessary to operate on a
resource. This is a lot better than the multiple separate parameters
that we used to pass around all over the place, while still allowing
for dependency injection for tests.
* Tie storage access together using the new EntityStore that directly
works with ApplicationDomainTypes. This gives us a central place where
main storage, indexes and buffer adaptors are tied together, which
will also give us a place to implement external indexes, such as a
fulltextindex using xapian.
* Use ApplicationDomainTypes as the default way to pass around entities.
Instead of using various ways to pass around entities (buffers,
buffer adaptors, ApplicationDomainTypes), only use a single way.
The old approach was confusing, and was only done as:
* optimization; really shouldn't be necessary and otherwise I'm sure
we can find better ways to optimize ApplicationDomainType itself.
* a way to account for entities that have multiple buffers, a concept
that I no longer deem relevant.
While this commit does the bulk of the work to get there, the following
commits will refactor more stuff to get things back to normal.
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DataStoreQuery now encapsulates the low-level query that operates
directly on the storage. It no longer has access to the resource
buffers, and is instantiated by the type implementation, so we can
specialize the query alogorithm per type, but not per resource.
This will allow us to implement the threading queries for the mailtype.
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changereplay and synchronization.
This cleans up the API and avoids the excessive passing around of
transactions. It also provides more flexibility in eventually using
different synchronization strategies for different resources.
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We skip values we've already seen and only retrieve the new ones.
This currently only properly works in a non-live query and we don't
give the model any feedback when we can't fetch more data anymore.
However, it generally works and we get the desired effect.
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This cuts the exportet symbols from 12k to 2k and the library size from
16Mb to 14Mb, which isn't great but still an improvement.
About 30% of the symbols are coming from the Store:: interface.
nm -C -D /work/install/lib64/libsinkcommon.so.0.1
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(except for documentation).
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A central location for all types to specify what properties are
indexed, and how to query them.
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We go rid of large parts of the header entanglements.
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The QueryRunner object lives for the duration of the query (so just
for the initial query for non-live queries, and for the lifetime of the
result model for live queries).
It's supposed to handle all the threading internally and decouple the
lifetime of the facade.
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Adding new types definitely needs to become easier.
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We no longer depend on clientapi.h from everywhere.
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So we can use it in tests as well.
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resource
The factory is potentially used from several queries simultaneously,
so it's now mutex protected.
Additionally we try to load the plugins directly in the factory.
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There is always exactly one default buffer that we can centralize
in TypeImplementation.
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