[AVRO-1203] Support for obtaining the number of bytes written

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Workaround
• Affects Version/s: 1.7.2
• Component/s: c++
• Assignee: Unassigned
• Reporter: Manuel Simoni
• Created: 12/Nov/12 12:34
• Updated: 28/Dec/18 16:42
• Resolved: 28/Dec/18 16:42

Description

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