get all Field's names from an Avro schema json.

avro_describe_feilds.py

# -*- coding: utf-8 -*-

import avro.schema

def get_schema_children(avro_schema):
    children = []
    if isinstance(avro_schema, avro.schema.UnionSchema):
        children = avro_schema.schemas
    
    if isinstance(avro_schema, avro.schema.RecordSchema):
        children = avro_schema.fields
        
    if isinstance(avro_schema, avro.schema.Field) and not isinstance(avro_schema.type, avro.schema.PrimitiveSchema):
        children = get_schema_children(avro_schema.type)
        
    return children

def get_children_field_names(children, prefix):
    accum = []
    for child in children:
        accum.extend(get_fields_names(child, prefix))
    
    return accum

def get_fields_names(avro_schema, parents = []):
    
    accum = []
    prefix = parents[:]
    
    if 'name' in avro_schema.props:
        prefix.append(avro_schema.name)
        accum.append(prefix)
    
    children = get_schema_children(avro_schema)    
    children_names = get_children_field_names(children, prefix)
    accum.extend(children_names)
        
    return accum


json_str = open('schema1.avsc', "r").read()
schema = avro.schema.Parse(json_str)

names = list(map(lambda x: '/'.join(x), get_fields_names(schema)))

print(names)

schema1.avsc

[
    {
        "fields": [
            {
                "name": "house_num",
                "type": "int"
            },
            {
                "name": "street",
                "type": [
                    "string",
                    "null"
                ]
            },
            {
                "name": "city",
                "type": "string"
            }
        ],
        "name": "Address",
        "type": "record"
    },
    {
        "fields": [
            {
                "name": "name",
                "type": "string"
            },
            {
                "name": "address",
                "type": "Address"
            },
            {
                "name": "office_address",
                "type": "Address"
            },
            {
                "name": "favorite_number",
                "type": [
                    "int",
                    "null"
                ]
            },
            {
                "name": "favorite_color",
                "type": [
                    "string",
                    "null"
                ]
            },
            {
                "name": "phones",
                "type": {
                    "items": "string",
                    "type": "array"
                }
            },
            {
                "name": "additional",
                "type": {
                    "type": "map",
                    "values": "string"
                }
            }
        ],
        "name": "User",
        "type": "record"
    }
]