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# MinIO Python Library for Amazon S3 Compatible Cloud Storage, (C)
# 2020 MinIO, Inc.
#
# 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
#
# 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.
"""Request/response of PutBucketReplication and GetBucketReplication APIs."""
from __future__ import absolute_import
from abc import ABCMeta
from .xml import Element, SubElement
COMPRESSION_TYPE_NONE = "NONE"
COMPRESSION_TYPE_GZIP = "GZIP"
COMPRESSION_TYPE_BZIP2 = "BZIP2"
FILE_HEADER_INFO_USE = "USE"
FILE_HEADER_INFO_IGNORE = "IGNORE"
FILE_HEADER_INFO_NONE = "NONE"
JSON_TYPE_DOCUMENT = "DOCUMENT"
JSON_TYPE_LINES = "LINES"
QUOTE_FIELDS_ALWAYS = "ALWAYS"
QUOTE_FIELDS_ASNEEDED = "ASNEEDED"
class InputSerialization:
"""Input serialization."""
__metaclass__ = ABCMeta
def __init__(self, compression_type):
if (
compression_type is not None and
compression_type not in [
COMPRESSION_TYPE_NONE,
COMPRESSION_TYPE_GZIP,
COMPRESSION_TYPE_BZIP2,
]
):
raise ValueError(
"compression type must be {0}, {1} or {2}".format(
COMPRESSION_TYPE_NONE,
COMPRESSION_TYPE_GZIP,
COMPRESSION_TYPE_BZIP2,
),
)
self._compression_type = compression_type
def toxml(self, element):
"""Convert to XML."""
if self._compression_type is not None:
SubElement(element, "CompressionType")
return element
class CSVInputSerialization(InputSerialization):
"""CSV input serialization."""
def __init__(self, compression_type=None,
allow_quoted_record_delimiter=None, comments=None,
field_delimiter=None, file_header_info=None,
quote_character=None, quote_escape_character=None,
record_delimiter=None):
super().__init__(compression_type)
self._allow_quoted_record_delimiter = allow_quoted_record_delimiter
self._comments = comments
self._field_delimiter = field_delimiter
if (
file_header_info is not None and
file_header_info not in [
FILE_HEADER_INFO_USE,
FILE_HEADER_INFO_IGNORE,
FILE_HEADER_INFO_NONE,
]
):
raise ValueError(
"file header info must be {0}, {1} or {2}".format(
FILE_HEADER_INFO_USE,
FILE_HEADER_INFO_IGNORE,
FILE_HEADER_INFO_NONE,
),
)
self._file_header_info = file_header_info
self._quote_character = quote_character
self._quote_escape_character = quote_escape_character
self._record_delimiter = record_delimiter
def toxml(self, element):
"""Convert to XML."""
super().toxml(element)
element = SubElement(element, "CSV")
if self._allow_quoted_record_delimiter is not None:
SubElement(
element,
"AllowQuotedRecordDelimiter",
self._allow_quoted_record_delimiter,
)
if self._comments is not None:
SubElement(element, "Comments", self._comments)
if self._field_delimiter is not None:
SubElement(element, "FieldDelimiter", self._field_delimiter)
if self._file_header_info is not None:
SubElement(element, "FileHeaderInfo", self._file_header_info)
if self._quote_character is not None:
SubElement(element, "QuoteCharacter", self._quote_character)
if self._quote_escape_character is not None:
SubElement(
element,
"QuoteEscapeCharacter",
self._quote_escape_character,
)
if self._record_delimiter is not None:
SubElement(element, "RecordDelimiter", self._record_delimiter)
class JSONInputSerialization(InputSerialization):
"""JSON input serialization."""
def __init__(self, compression_type=None, json_type=None):
super().__init__(compression_type)
if (
json_type is not None and
json_type not in [JSON_TYPE_DOCUMENT, JSON_TYPE_LINES]
):
raise ValueError(
"json type must be {0} or {1}".format(
JSON_TYPE_DOCUMENT, JSON_TYPE_LINES,
),
)
self._json_type = json_type
def toxml(self, element):
"""Convert to XML."""
super().toxml(element)
element = SubElement(element, "JSON")
if self._json_type is not None:
SubElement(element, "Type", self._json_type)
class ParquetInputSerialization(InputSerialization):
"""Parquet input serialization."""
def __init__(self, compression_type=None):
super().__init__(compression_type)
def toxml(self, element):
"""Convert to XML."""
super().toxml(element)
return SubElement(element, "Parquet")
class CSVOutputSerialization:
"""CSV output serialization."""
def __init__(self, field_delimiter=None, quote_character=None,
quote_escape_character=None, quote_fields=None,
record_delimiter=None):
self._field_delimiter = field_delimiter
self._quote_character = quote_character
self._quote_escape_character = quote_escape_character
if (
quote_fields is not None and
quote_fields not in [
QUOTE_FIELDS_ALWAYS, QUOTE_FIELDS_ASNEEDED,
]
):
raise ValueError(
"quote fields must be {0} or {1}".format(
QUOTE_FIELDS_ALWAYS, QUOTE_FIELDS_ASNEEDED,
),
)
self._quote_fields = quote_fields
self._record_delimiter = record_delimiter
def toxml(self, element):
"""Convert to XML."""
element = SubElement(element, "CSV")
if self._field_delimiter is not None:
SubElement(element, "FieldDelimiter", self._field_delimiter)
if self._quote_character is not None:
SubElement(element, "QuoteCharacter", self._quote_character)
if self._quote_escape_character is not None:
SubElement(
element,
"QuoteEscapeCharacter",
self._quote_escape_character,
)
if self._quote_fields is not None:
SubElement(element, "QuoteFields", self._quote_fields)
if self._record_delimiter is not None:
SubElement(element, "RecordDelimiter", self._record_delimiter)
class JSONOutputSerialization:
"""JSON output serialization."""
def __init__(self, record_delimiter=None):
self._record_delimiter = record_delimiter
def toxml(self, element):
"""Convert to XML."""
element = SubElement(element, "JSON")
if self._record_delimiter is not None:
SubElement(element, "RecordDelimiter", self._record_delimiter)
class SelectRequest:
"""Select object content request."""
def __init__(self, expression, input_serialization, output_serialization,
request_progress=False, scan_start_range=None,
scan_end_range=None):
self._expession = expression
if not isinstance(
input_serialization,
(
CSVInputSerialization,
JSONInputSerialization,
ParquetInputSerialization,
),
):
raise ValueError(
"input serialization must be CSVInputSerialization, "
"JSONInputSerialization or ParquetInputSerialization type",
)
self._input_serialization = input_serialization
if not isinstance(
output_serialization,
(CSVOutputSerialization, JSONOutputSerialization),
):
raise ValueError(
"output serialization must be CSVOutputSerialization or "
"JSONOutputSerialization type",
)
self._output_serialization = output_serialization
self._request_progress = request_progress
self._scan_start_range = scan_start_range
self._scan_end_range = scan_end_range
def toxml(self, element):
"""Convert to XML."""
element = Element("SelectObjectContentRequest")
SubElement(element, "Expression", self._expession)
SubElement(element, "ExpressionType", "SQL")
self._input_serialization.toxml(
SubElement(element, "InputSerialization"),
)
self._output_serialization.toxml(
SubElement(element, "OutputSerialization"),
)
if self._request_progress:
SubElement(
SubElement(element, "RequestProgress"), "Enabled", "true",
)
if self._scan_start_range or self._scan_end_range:
tag = SubElement(element, "ScanRange")
if self._scan_start_range:
SubElement(tag, "Start", self._scan_start_range)
if self._scan_end_range:
SubElement(tag, "End", self._scan_end_range)
return element
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