[AVRO-3547] support custom attribute at field level

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.11.1, 1.12.0
• Component/s: c++
• Labels: pull-request-available
• Assignee: Martin Tzvetanov Grigorov
• Reporter: Nilesh Yadav
• Created: 24/Jun/22 19:59
• Updated: 24/Dec/22 19:16
• Resolved: 25/Jul/22 19:42

Description

Custom attributes are allowed at field level as per Avro specification : https://avro.apache.org/docs/current/spec.html#schemas 

But Avro c++ implementation does not support custom attribute at field level.
e.g. following schema cannot be parsed correctly due to presence of "sqlName" attribute.
{
    'doc': 'weather warning',
    'name': 'weather',
    'type': 'record',
    'fields': [
   

{         'name': 'station',         'type':'string',         'sqlName':'abc-@12'     }

,
   

{         'name': 'time',         'type':'long',         'sqlName': '用户名'     }

]
}

Update implementation to support custom attribute at field level.

Issue Links

• breaks: AVRO-3601 C++ API header contains breaking include
• links to: GitHub Pull Request #1736