o
    bi	                     @   s\   d dl mZmZmZmZmZmZmZ d dlm	Z	 d dl
mZ er$d dlZG dd deZdS )    )TYPE_CHECKINGAnyDictIteratorListOptionalUnion)Block)FileBasedDatasourceNc                       sh   e Zd ZdZg dZ	ddeeee f dee	ee
f  f fddZdd	d
edee fddZ  ZS )CSVDatasourcez2CSV datasource, for reading and writing CSV files.)csvzcsv.gzzcsv.brzcsv.zstzcsv.lz4Npathsarrow_csv_argsc                    s^   ddl m} t j|fi | |d u ri }|d|jdd| _|d| | _|| _	d S )Nr   r   read_optionsF)use_threadsparse_options)
pyarrowr   super__init__popReadOptionsr   ParseOptionsr   r   )selfr   r   file_based_datasource_kwargsr   	__class__ `/home/ubuntu/.local/lib/python3.10/site-packages/ray/data/_internal/datasource/csv_datasource.pyr      s   
zCSVDatasource.__init__fzpyarrow.NativeFilepathreturnc           
   
   c   s    dd l }ddl m} t| jdr| jj| j_z8|j|f| j| jd| j}d }	 z| }|j	j
|g|d}|d u r?|j}|V  W n tyN   Y W d S w q* |jjyf }	 z	td| d|	d }	~	ww )	Nr   r   invalid_row_handler)r   r   T)schemazFailed to read CSV file: z. Please check the CSV file has correct format, or filter out non-CSV file with 'partition_filter' field. See read_csv() documentation for more details.)r   r   hasattrr   r"   open_csvr   r   read_next_batchTablefrom_batchesr#   StopIterationlibArrowInvalid
ValueError)
r   r   r    par   readerr#   batchtableer   r   r   _read_stream(   sF   
	
zCSVDatasource._read_stream)N)__name__
__module____qualname____doc___FILE_EXTENSIONSr   strr   r   r   r   r   r   r	   r2   __classcell__r   r   r   r   r   
   s    "r   )typingr   r   r   r   r   r   r   ray.data.blockr	   )ray.data.datasource.file_based_datasourcer
   r   r   r   r   r   r   <module>   s   $ 