def readschemadata(bytes_io: io._io.BytesIO) -> fastavro._read.reader:
"""Read data that already has an Avro schema.
Parameters
----------
bytes_io : `_io.BytesIO`
Data to be decoded.
Returns
-------
`fastavro._read.reader`
Iterator over records (`dict`) in an avro file.
Examples
----------
Open an avro file, and read the schema and the records
>>> with open(ztf_alert_sample, mode='rb') as file_data:
... data = readschemadata(file_data)
... # Read the schema
... schema = data.schema
... # data is an iterator
... for record in data:
... print(type(record))
<class 'dict'>
"""
bytes_io.seek(0)
message = fastavro.reader(bytes_io)
return message
def readSchemaData(bytes_io: io._io.BytesIO):
"""Read data that already has an Avro schema.
Parameters
----------
bytes_io : `_io.BytesIO`
Data to be decoded.
Returns
-------
`dict`
Decoded data.
"""
bytes_io.seek(0)
message = fastavro.reader(bytes_io)
return message
def readAvroData(bytes_io: io._io.BytesIO, json_schema: dict) -> dict:
"""Read data and decode with a given Avro schema.
Parameters
----------
bytes_io : `_io.BytesIO`
Data to be decoded.
json_schema : `dict`
The reader Avro schema for decoding data.
Returns
-------
`dict`
Decoded data.
"""
bytes_io.seek(0)
message = fastavro.schemaless_reader(bytes_io, json_schema)
return message