[GitHub] [pulsar] yciabaud opened a new issue #3916: Serialization error when encoding schema with subrecords in python client

[GitBox <gi...@apache.org>]

yciabaud opened a new issue #3916: Serialization error when encoding schema with subrecords in python client
URL: https://github.com/apache/pulsar/issues/3916
 
 
   It seems that the schema support in the client 2.3.0 on python 3.7 is not working with subrecords.
   
   This example produces an error when encoding ():
   
   > "TypeError: Object of type MySubRecord is not JSON serializable"
   
   ```python
   import json
   from pulsar.schema import Record, String, JsonSchema
   
   def test_complex():
       class MySubRecord(Record):
           a = String()
   
       class Example(Record):
           sub = MySubRecord() # Test with instance
   
       r = Example(sub = MySubRecord( a = 'string' ))
       assert r.sub.a == 'string'
   
       s = JsonSchema(Example)
   
       # Produces "TypeError: Object of type MySubRecord is not JSON serializable"
       data = s.encode(r)
   
       assert json.loads(data)['sub']['a'] == 'string'
   ```
   Is there something I missed in the implementation? I tested with `AvroSchema` with no success.
   
   I expected the client to use a custom encoder that would have encoded the subrecord.
   
   What do you think?
   

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