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https://issues.apache.org/jira/browse/THRIFT-769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Armaan Sarkar updated THRIFT-769:
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Attachment: pluggable_serializer.patch
Adds the pluggable serializer from scratch
> Pluggable Serializers
> ---------------------
>
> Key: THRIFT-769
> URL: https://issues.apache.org/jira/browse/THRIFT-769
> Project: Thrift
> Issue Type: New Feature
> Components: Java - Compiler, Java - Library
> Reporter: Bryan Duxbury
> Assignee: Bryan Duxbury
> Labels: gsoc2011, mentor
> Attachments: pluggable_serializer.patch, thrift_scheme.patch,
> thrift_scheme_update1.patch
>
>
> Thrift is already designed to have modular Protocols, which define the
> various elements of binary encoding. However, the way that our code is
> generated, we're also implicitly defining every protocol to have a
> *structure* like that of the Binary protocol.
> This has served us well so far with it's simplicity, and other protocols
> (like Compact and JSON) have been able to squeeze into this model
> successfully, though at a noticeable cost. For instance, Compact protocol has
> to keep its own internal state in a stack to know what the last field id we
> wrote was so that it can write compact deltas. The JSON protocol is even more
> complex, keeping a truly monstrous amount of state around in order to be able
> to do the right thing at the right time. All this state tracking comes with
> cost, both in complexity and in actual runtime.
> I think that there's a solution to this problem - making the serialization
> code itself pluggable. That is, rather than there being a single "write" and
> "read" method for every protocol, we could let Protocols require a certain
> kind of Serializer to interact with them. Binary protocol could use the
> "default tagged" serializer, which would look like what we have today. JSON
> would probably use a custom one that basically let it write out strings and
> nothing else. Compact would also likely use a custom serializer that kept all
> the needed state on the system stack, rather than in a user-code stack. Dare
> I say it, but it's possible that if we did it right, we could even serialize
> Thrift structs with Avro's serialization format!
> The upshot of this change would be to make many protocols faster and simpler,
> while also allowing us to implement a broader set of protocols that don't fit
> with the traditional Thrift-style protocols.
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