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| # Licensed to the Apache Software Foundation (ASF) under one | |
| # or more contributor license agreements. See the NOTICE file | |
| # distributed with this work for additional information | |
| # regarding copyright ownership. The ASF licenses this file | |
| # to you 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 | |
| # | |
| # http://www.apache.org/licenses/LICENSE-2.0 | |
| # | |
| # Unless required by applicable law or agreed to in writing, | |
| # software distributed under the License is distributed on an | |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| # KIND, either express or implied. See the License for the | |
| # specific language governing permissions and limitations | |
| # under the License. | |
| from tempfile import TemporaryDirectory | |
| from typing import Optional | |
| import pytest | |
| from pydantic import Field | |
| from pyiceberg.avro.file import AvroFile | |
| from pyiceberg.avro.reader import ( | |
| DecimalReader, | |
| DefaultReader, | |
| DoubleReader, | |
| FloatReader, | |
| IntegerReader, | |
| MapReader, | |
| OptionReader, | |
| StringReader, | |
| StructReader, | |
| ) | |
| from pyiceberg.avro.resolver import resolve_reader, resolve_writer | |
| from pyiceberg.avro.writer import ( | |
| BinaryWriter, | |
| DefaultWriter, | |
| DoubleWriter, | |
| IntegerWriter, | |
| ListWriter, | |
| MapWriter, | |
| OptionWriter, | |
| StringWriter, | |
| StructWriter, | |
| ) | |
| from pyiceberg.exceptions import ResolveError | |
| from pyiceberg.io.pyarrow import PyArrowFileIO | |
| from pyiceberg.manifest import MANIFEST_ENTRY_SCHEMAS | |
| from pyiceberg.schema import Schema | |
| from pyiceberg.typedef import Record | |
| from pyiceberg.types import ( | |
| BinaryType, | |
| BooleanType, | |
| DecimalType, | |
| DoubleType, | |
| FloatType, | |
| IntegerType, | |
| ListType, | |
| LongType, | |
| MapType, | |
| NestedField, | |
| StringType, | |
| StructType, | |
| ) | |
| def test_resolver() -> None: | |
| write_schema = Schema( | |
| NestedField(1, "id", LongType()), | |
| NestedField(2, "data", StringType()), | |
| NestedField( | |
| 3, | |
| "location", | |
| StructType( | |
| NestedField(4, "lat", DoubleType()), | |
| NestedField(5, "long", DoubleType()), | |
| ), | |
| ), | |
| NestedField(6, "preferences", MapType(7, StringType(), 8, StringType())), | |
| schema_id=1, | |
| ) | |
| location_struct = StructType( | |
| NestedField(4, "lat", DoubleType()), | |
| NestedField(5, "long", DoubleType()), | |
| ) | |
| read_schema = Schema( | |
| NestedField( | |
| 3, | |
| "location", | |
| location_struct, | |
| ), | |
| NestedField(1, "id", LongType(), required=False), | |
| NestedField(6, "preferences", MapType(7, StringType(), 8, StringType())), | |
| schema_id=1, | |
| ) | |
| read_tree = resolve_reader(write_schema, read_schema) | |
| assert read_tree == StructReader( | |
| ( | |
| (1, OptionReader(option=IntegerReader())), | |
| (None, OptionReader(option=StringReader())), | |
| ( | |
| 0, | |
| OptionReader( | |
| option=StructReader( | |
| ( | |
| (0, OptionReader(option=DoubleReader())), | |
| (1, OptionReader(option=DoubleReader())), | |
| ), | |
| Record, | |
| location_struct, | |
| ), | |
| ), | |
| ), | |
| (2, OptionReader(option=MapReader(StringReader(), StringReader()))), | |
| ), | |
| Record, | |
| read_schema.as_struct(), | |
| ) | |
| def test_resolver_new_required_field() -> None: | |
| write_schema = Schema( | |
| NestedField(1, "id", LongType()), | |
| schema_id=1, | |
| ) | |
| read_schema = Schema( | |
| NestedField(1, "id", LongType()), | |
| NestedField(2, "data", StringType(), required=True), | |
| schema_id=1, | |
| ) | |
| with pytest.raises(ResolveError) as exc_info: | |
| resolve_reader(write_schema, read_schema) | |
| assert "2: data: required string is non-optional, and not part of the file schema" in str(exc_info.value) | |
| def test_resolver_invalid_evolution() -> None: | |
| write_schema = Schema( | |
| NestedField(1, "id", LongType()), | |
| schema_id=1, | |
| ) | |
| read_schema = Schema( | |
| NestedField(1, "id", DoubleType()), | |
| schema_id=1, | |
| ) | |
| with pytest.raises(ResolveError) as exc_info: | |
| resolve_reader(write_schema, read_schema) | |
| assert "Cannot promote long to double" in str(exc_info.value) | |
| def test_resolver_promotion_string_to_binary() -> None: | |
| write_schema = Schema( | |
| NestedField(1, "id", StringType()), | |
| schema_id=1, | |
| ) | |
| read_schema = Schema( | |
| NestedField(1, "id", BinaryType()), | |
| schema_id=1, | |
| ) | |
| resolve_reader(write_schema, read_schema) | |
| def test_resolver_promotion_binary_to_string() -> None: | |
| write_schema = Schema( | |
| NestedField(1, "id", BinaryType()), | |
| schema_id=1, | |
| ) | |
| read_schema = Schema( | |
| NestedField(1, "id", StringType()), | |
| schema_id=1, | |
| ) | |
| resolve_reader(write_schema, read_schema) | |
| def test_resolver_change_type() -> None: | |
| write_schema = Schema( | |
| NestedField(1, "properties", ListType(2, StringType())), | |
| schema_id=1, | |
| ) | |
| read_schema = Schema( | |
| NestedField(1, "properties", MapType(2, StringType(), 3, StringType())), | |
| schema_id=1, | |
| ) | |
| with pytest.raises(ResolveError) as exc_info: | |
| resolve_reader(write_schema, read_schema) | |
| assert "File/read schema are not aligned for list, got map<string, string>" in str(exc_info.value) | |
| def test_resolve_int_to_long() -> None: | |
| assert resolve_reader(IntegerType(), LongType()) == IntegerReader() | |
| def test_resolve_float_to_double() -> None: | |
| # We should still read floats, because it is encoded in 4 bytes | |
| assert resolve_reader(FloatType(), DoubleType()) == FloatReader() | |
| def test_resolve_decimal_to_decimal() -> None: | |
| # DecimalType(P, S) to DecimalType(P2, S) where P2 > P | |
| assert resolve_reader(DecimalType(19, 25), DecimalType(22, 25)) == DecimalReader(19, 25) | |
| def test_struct_not_aligned() -> None: | |
| with pytest.raises(ResolveError): | |
| assert resolve_reader(StructType(), StringType()) | |
| def test_map_not_aligned() -> None: | |
| with pytest.raises(ResolveError): | |
| assert resolve_reader(MapType(1, StringType(), 2, IntegerType()), StringType()) | |
| def test_primitive_not_aligned() -> None: | |
| with pytest.raises(ResolveError): | |
| assert resolve_reader(IntegerType(), MapType(1, StringType(), 2, IntegerType())) | |
| def test_integer_not_aligned() -> None: | |
| with pytest.raises(ResolveError): | |
| assert resolve_reader(IntegerType(), StringType()) | |
| def test_float_not_aligned() -> None: | |
| with pytest.raises(ResolveError): | |
| assert resolve_reader(FloatType(), StringType()) | |
| def test_string_not_aligned() -> None: | |
| with pytest.raises(ResolveError): | |
| assert resolve_reader(StringType(), FloatType()) | |
| def test_binary_not_aligned() -> None: | |
| with pytest.raises(ResolveError): | |
| assert resolve_reader(BinaryType(), FloatType()) | |
| def test_decimal_not_aligned() -> None: | |
| with pytest.raises(ResolveError): | |
| assert resolve_reader(DecimalType(22, 19), StringType()) | |
| def test_resolve_decimal_to_decimal_reduce_precision() -> None: | |
| # DecimalType(P, S) to DecimalType(P2, S) where P2 > P | |
| with pytest.raises(ResolveError) as exc_info: | |
| _ = resolve_reader(DecimalType(19, 25), DecimalType(10, 25)) == DecimalReader(22, 25) | |
| assert "Cannot reduce precision from decimal(19, 25) to decimal(10, 25)" in str(exc_info.value) | |
| def test_column_assignment() -> None: | |
| int_schema = { | |
| "type": "record", | |
| "name": "ints", | |
| "fields": [ | |
| {"name": "a", "type": "int", "field-id": 1}, | |
| {"name": "b", "type": "int", "field-id": 2}, | |
| {"name": "c", "type": "int", "field-id": 3}, | |
| ], | |
| } | |
| from fastavro import parse_schema, writer | |
| parsed_schema = parse_schema(int_schema) | |
| int_records = [ | |
| { | |
| "a": 1, | |
| "b": 2, | |
| "c": 3, | |
| } | |
| ] | |
| with TemporaryDirectory() as tmpdir: | |
| tmp_avro_file = tmpdir + "/manifest.avro" | |
| with open(tmp_avro_file, "wb") as out: | |
| writer(out, parsed_schema, int_records) | |
| class Ints(Record): | |
| c: int = Field() | |
| d: Optional[int] = Field() | |
| MANIFEST_ENTRY_SCHEMA = Schema( | |
| NestedField(3, "c", IntegerType(), required=True), | |
| NestedField(4, "d", IntegerType(), required=False), | |
| ) | |
| with AvroFile[Ints](PyArrowFileIO().new_input(tmp_avro_file), MANIFEST_ENTRY_SCHEMA, {-1: Ints}) as reader: | |
| records = list(reader) | |
| assert repr(records) == "[Ints[c=3, d=None]]" | |
| def test_resolver_initial_value() -> None: | |
| write_schema = Schema( | |
| NestedField(1, "name", StringType()), | |
| schema_id=1, | |
| ) | |
| read_schema = Schema( | |
| NestedField(2, "something", StringType(), required=False, initial_default="vo"), | |
| schema_id=2, | |
| ) | |
| assert resolve_reader(write_schema, read_schema) == StructReader( | |
| ( | |
| (None, OptionReader(option=StringReader())), # The one we skip | |
| (0, DefaultReader("vo")), | |
| ), | |
| Record, | |
| read_schema.as_struct(), | |
| ) | |
| def test_resolve_writer() -> None: | |
| actual = resolve_writer(record_schema=MANIFEST_ENTRY_SCHEMAS[2], file_schema=MANIFEST_ENTRY_SCHEMAS[1]) | |
| expected = StructWriter(( | |
| (0, IntegerWriter()), | |
| (1, IntegerWriter()), | |
| ( | |
| 4, | |
| StructWriter(( | |
| (1, StringWriter()), | |
| (2, StringWriter()), | |
| (3, StructWriter(())), | |
| (4, IntegerWriter()), | |
| (5, IntegerWriter()), | |
| (None, DefaultWriter(writer=IntegerWriter(), value=67108864)), | |
| (6, OptionWriter(option=MapWriter(key_writer=IntegerWriter(), value_writer=IntegerWriter()))), | |
| (7, OptionWriter(option=MapWriter(key_writer=IntegerWriter(), value_writer=IntegerWriter()))), | |
| (8, OptionWriter(option=MapWriter(key_writer=IntegerWriter(), value_writer=IntegerWriter()))), | |
| (9, OptionWriter(option=MapWriter(key_writer=IntegerWriter(), value_writer=IntegerWriter()))), | |
| (10, OptionWriter(option=MapWriter(key_writer=IntegerWriter(), value_writer=BinaryWriter()))), | |
| (11, OptionWriter(option=MapWriter(key_writer=IntegerWriter(), value_writer=BinaryWriter()))), | |
| (12, OptionWriter(option=BinaryWriter())), | |
| (13, OptionWriter(option=ListWriter(element_writer=IntegerWriter()))), | |
| (15, OptionWriter(option=IntegerWriter())), | |
| )), | |
| ), | |
| )) | |
| assert actual == expected | |
| def test_resolve_writer_promotion() -> None: | |
| with pytest.raises(ResolveError) as exc_info: | |
| _ = resolve_writer( | |
| record_schema=Schema(NestedField(field_id=1, name="floating", type=DoubleType(), required=True)), | |
| file_schema=Schema(NestedField(field_id=1, name="floating", type=FloatType(), required=True)), | |
| ) | |
| assert "Cannot promote double to float" in str(exc_info.value) | |
| def test_writer_ordering() -> None: | |
| actual = resolve_writer( | |
| record_schema=Schema( | |
| NestedField(field_id=1, name="str", type=StringType(), required=True), | |
| NestedField(field_id=2, name="dbl", type=DoubleType(), required=True), | |
| ), | |
| file_schema=Schema( | |
| NestedField(field_id=2, name="dbl", type=DoubleType(), required=True), | |
| NestedField(field_id=1, name="str", type=StringType(), required=True), | |
| ), | |
| ) | |
| expected = StructWriter(((1, DoubleWriter()), (0, StringWriter()))) | |
| assert actual == expected | |
| def test_writer_one_more_field() -> None: | |
| actual = resolve_writer( | |
| record_schema=Schema( | |
| NestedField(field_id=3, name="bool", type=BooleanType(), required=True), | |
| NestedField(field_id=1, name="str", type=StringType(), required=True), | |
| NestedField(field_id=2, name="dbl", type=DoubleType(), required=True), | |
| ), | |
| file_schema=Schema( | |
| NestedField(field_id=2, name="dbl", type=DoubleType(), required=True), | |
| NestedField(field_id=1, name="str", type=StringType(), required=True), | |
| ), | |
| ) | |
| expected = StructWriter(((2, DoubleWriter()), (1, StringWriter()))) | |
| assert actual == expected | |
| def test_writer_missing_optional_in_read_schema() -> None: | |
| actual = resolve_writer( | |
| record_schema=Schema(), | |
| file_schema=Schema( | |
| NestedField(field_id=1, name="str", type=StringType(), required=False), | |
| ), | |
| ) | |
| expected = StructWriter(field_writers=((None, OptionWriter(option=StringWriter())),)) | |
| assert actual == expected | |