Add support to ArrowDataSource in SourceInfo (rapidsai#16050)

ArrowDataSources weren't previously supported in SourceInfo.
(since we didn't need it for Avro).

Adding it now so we can pass tests for orc reader and co. 
(even though ArrowDataSource may potentially be removed in the future)

Authors:
  - Thomas Li (https://github.com/lithomas1)

Approvers:
  - Vyas Ramasubramani (https://github.com/vyasr)

URL: rapidsai#16050

python/cudf/cudf/_lib/csv.pyx

@@ -8,7 +8,7 @@ from libcpp.utility cimport move
 from libcpp.vector cimport vector
 
 cimport cudf._lib.pylibcudf.libcudf.types as libcudf_types
-from cudf._lib.io.datasource cimport Datasource, NativeFileDatasource
+from cudf._lib.pylibcudf.io.datasource cimport Datasource, NativeFileDatasource
 from cudf._lib.pylibcudf.libcudf.types cimport data_type
 from cudf._lib.types cimport dtype_to_data_type
 

python/cudf/cudf/_lib/io/CMakeLists.txt

@@ -1,5 +1,5 @@
 # =============================================================================
-# Copyright (c) 2022-2023, NVIDIA CORPORATION.
+# Copyright (c) 2022-2024, NVIDIA CORPORATION.
 #
 # Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 # in compliance with the License. You may obtain a copy of the License at
@@ -12,7 +12,7 @@
 # the License.
 # =============================================================================
 
-set(cython_sources datasource.pyx utils.pyx)
+set(cython_sources utils.pyx)
 set(linked_libraries cudf::cudf)
 rapids_cython_create_modules(
   CXX

python/cudf/cudf/_lib/io/utils.pyx

@@ -8,7 +8,7 @@ from libcpp.utility cimport move
 from libcpp.vector cimport vector
 
 from cudf._lib.column cimport Column
-from cudf._lib.io.datasource cimport Datasource
+from cudf._lib.pylibcudf.io.datasource cimport Datasource
 from cudf._lib.pylibcudf.libcudf.io.data_sink cimport data_sink
 from cudf._lib.pylibcudf.libcudf.io.datasource cimport datasource
 from cudf._lib.pylibcudf.libcudf.io.types cimport (

python/cudf/cudf/_lib/orc.pyx

@@ -23,12 +23,12 @@ except ImportError:
 
 cimport cudf._lib.pylibcudf.libcudf.io.types as cudf_io_types
 from cudf._lib.column cimport Column
-from cudf._lib.io.datasource cimport NativeFileDatasource
 from cudf._lib.io.utils cimport (
     make_sink_info,
     make_source_info,
     update_column_struct_field_names,
 )
+from cudf._lib.pylibcudf.io.datasource cimport NativeFileDatasource
 from cudf._lib.pylibcudf.libcudf.io.data_sink cimport data_sink
 from cudf._lib.pylibcudf.libcudf.io.orc cimport (
     chunked_orc_writer_options,

python/cudf/cudf/_lib/parquet.pyx

@@ -37,12 +37,12 @@ cimport cudf._lib.pylibcudf.libcudf.io.types as cudf_io_types
 cimport cudf._lib.pylibcudf.libcudf.types as cudf_types
 from cudf._lib.column cimport Column
 from cudf._lib.expressions cimport Expression
-from cudf._lib.io.datasource cimport NativeFileDatasource
 from cudf._lib.io.utils cimport (
     make_sinks_info,
     make_source_info,
     update_struct_field_names,
 )
+from cudf._lib.pylibcudf.io.datasource cimport NativeFileDatasource
 from cudf._lib.pylibcudf.libcudf.expressions cimport expression
 from cudf._lib.pylibcudf.libcudf.io.parquet cimport (
     chunked_parquet_reader as cpp_chunked_parquet_reader,

python/cudf/cudf/_lib/pylibcudf/io/CMakeLists.txt

@@ -12,7 +12,7 @@
 # the License.
 # =============================================================================
 
-set(cython_sources avro.pyx types.pyx)
+set(cython_sources avro.pyx datasource.pyx types.pyx)
 
 set(linked_libraries cudf::cudf)
 rapids_cython_create_modules(
@@ -21,5 +21,5 @@ rapids_cython_create_modules(
   LINKED_LIBRARIES "${linked_libraries}" MODULE_PREFIX pylibcudf_io_ ASSOCIATED_TARGETS cudf
 )
 
-set(targets_using_arrow_headers pylibcudf_io_avro pylibcudf_io_types)
+set(targets_using_arrow_headers pylibcudf_io_avro pylibcudf_io_datasource pylibcudf_io_types)
 link_to_pyarrow_headers("${targets_using_arrow_headers}")

python/cudf/cudf/_lib/pylibcudf/io/__init__.pxd

@@ -1,4 +1,4 @@
 # Copyright (c) 2024, NVIDIA CORPORATION.
 
-from . cimport avro, types
+from . cimport avro, datasource, types
 from .types cimport SourceInfo, TableWithMetadata

python/cudf/cudf/_lib/pylibcudf/io/__init__.py

@@ -1,4 +1,4 @@
 # Copyright (c) 2024, NVIDIA CORPORATION.
 
-from . import avro, types
+from . import avro, datasource, types
 from .types import SourceInfo, TableWithMetadata

python/cudf/cudf/_lib/pylibcudf/io/types.pyx

@@ -4,6 +4,8 @@ from libcpp.string cimport string
 from libcpp.utility cimport move
 from libcpp.vector cimport vector
 
+from cudf._lib.pylibcudf.io.datasource cimport Datasource
+from cudf._lib.pylibcudf.libcudf.io.datasource cimport datasource
 from cudf._lib.pylibcudf.libcudf.io.types cimport (
     host_buffer,
     source_info,
@@ -56,9 +58,8 @@ cdef class SourceInfo:
 
     Parameters
     ----------
-    sources : List[Union[str, os.PathLike, bytes, io.BytesIO]]
-        A homogeneous list of sources (this can be a string filename,
-        an os.PathLike, bytes, or an io.BytesIO) to read from.
+    sources : List[Union[str, os.PathLike, bytes, io.BytesIO, DataSource]]
+        A homogeneous list of sources to read from.
 
         Mixing different types of sources will raise a `ValueError`.
     """
@@ -68,6 +69,7 @@ cdef class SourceInfo:
             raise ValueError("Need to pass at least one source")
 
         cdef vector[string] c_files
+        cdef vector[datasource*] c_datasources
 
         if isinstance(sources[0], (os.PathLike, str)):
             c_files.reserve(len(sources))
@@ -84,6 +86,13 @@ cdef class SourceInfo:
 
             self.c_obj = move(source_info(c_files))
             return
+        elif isinstance(sources[0], Datasource):
+            for csrc in sources:
+                if not isinstance(csrc, Datasource):
+                    raise ValueError("All sources must be of the same type!")
+                c_datasources.push_back((<Datasource>csrc).get_datasource())
+            self.c_obj = move(source_info(c_datasources))
+            return
 
         # TODO: host_buffer is deprecated API, use host_span instead
         cdef vector[host_buffer] c_host_buffers
@@ -106,5 +115,11 @@ cdef class SourceInfo:
                 c_buffer = bio.getbuffer()  # check if empty?
                 c_host_buffers.push_back(host_buffer(<char*>&c_buffer[0],
                                                      c_buffer.shape[0]))
+        else:
+            raise ValueError("Sources must be a list of str/paths, "
+                             "bytes, io.BytesIO, or a Datasource")
+
+        if empty_buffer is True:
+            c_host_buffers.push_back(host_buffer(<char*>NULL, 0))
 
-        self.c_obj = source_info(c_host_buffers)
+        self.c_obj = move(source_info(c_host_buffers))

python/cudf/cudf/pylibcudf_tests/test_source_info.py

@@ -2,13 +2,21 @@
 
 import io
 
+import pyarrow as pa
 import pytest
 
 import cudf._lib.pylibcudf as plc
+from cudf._lib.pylibcudf.io.datasource import NativeFileDatasource
 
 
 @pytest.mark.parametrize(
-    "source", ["a.txt", b"hello world", io.BytesIO(b"hello world")]
+    "source",
+    [
+        "a.txt",
+        b"hello world",
+        io.BytesIO(b"hello world"),
+        NativeFileDatasource(pa.PythonFile(io.BytesIO(), mode="r")),
+    ],
 )
 def test_source_info_ctor(source, tmp_path):
     if isinstance(source, str):
@@ -28,6 +36,10 @@ def test_source_info_ctor(source, tmp_path):
         ["a.txt", "a.txt"],
         [b"hello world", b"hello there"],
         [io.BytesIO(b"hello world"), io.BytesIO(b"hello there")],
+        [
+            NativeFileDatasource(pa.PythonFile(io.BytesIO(), mode="r")),
+            NativeFileDatasource(pa.PythonFile(io.BytesIO(), mode="r")),
+        ],
     ],
 )
 def test_source_info_ctor_multiple(sources, tmp_path):
@@ -54,6 +66,11 @@ def test_source_info_ctor_multiple(sources, tmp_path):
             io.BytesIO(b"hello there"),
             b"hello world",
         ],
+        [
+            NativeFileDatasource(pa.PythonFile(io.BytesIO(), mode="r")),
+            "awef.txt",
+            b"hello world",
+        ],
     ],
 )
 def test_source_info_ctor_mixing_invalid(sources, tmp_path):
@@ -67,3 +84,8 @@ def test_source_info_ctor_mixing_invalid(sources, tmp_path):
             sources[i] = str(file)
     with pytest.raises(ValueError):
         plc.io.SourceInfo(sources)
+
+
+def test_source_info_invalid():
+    with pytest.raises(ValueError):
+        plc.io.SourceInfo([123])

python/cudf_kafka/cudf_kafka/_lib/kafka.pxd

@@ -7,7 +7,7 @@ from libcpp.memory cimport unique_ptr
 from libcpp.string cimport string
 from libcpp.vector cimport vector
 
-from cudf._lib.io.datasource cimport Datasource
+from cudf._lib.pylibcudf.io.datasource cimport Datasource
 from cudf._lib.pylibcudf.libcudf.io.datasource cimport datasource