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https://issues.apache.org/jira/browse/AVRO-1203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13599324#comment-13599324
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Paul Jacobs commented on AVRO-1203:
-----------------------------------
These seem to make sense.
My understanding is that if you flush the encoder and then check the byte count
of the output stream you'll know the number of bytes that were written. So you
might be able to use that.
> Support for obtaining the number of bytes written
> -------------------------------------------------
>
> Key: AVRO-1203
> URL: https://issues.apache.org/jira/browse/AVRO-1203
> Project: Avro
> Issue Type: Improvement
> Components: c++
> Affects Versions: 1.7.2
> Reporter: Manuel Simoni
> Fix For: 1.8.0
>
>
> I've used the Avro C++ library to implement Avro support for Node.js [1].
> In the course of this, I needed to extend the library so that it keeps
> track of the number of bytes written to a stream by an encoder.
> These changes mostly required making various headers public, and only
> small changes to implementation code.
> Here's a detailed list of changes:
> - Make the following headers public:
> -- BinaryEncoder.hh
> -- Symbol.hh
> -- ValidatingCodec.hh
> -- json/JsonDom.hh
> -- json/JsonEncoder.hh
> -- json/JsonIO.hh
> - Extend StreamWriter to keep track of number of bytes written
> (bytesWritten_, getBytesWritten())
> - Expose BinaryEncoder's and JsonEncoder's StreamWriter via getStreamWriter()
> method
> The complete changes can be viewed here on Github:
> https://github.com/manuel/avro-cpp/commit/f77c108a04fc9e39397eb2fae86b2710b64e2c8a
> The code is available in the "manuel/avro-cpp" Github Repo on the
> "upstream_submit" branch:
> https://github.com/manuel/avro-cpp/tree/upstream_submit
> We would love to have this functionality added to the Avro C++ library.
> [1] https://github.com/collectivemedia/node-avro
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