/
external_config.py
805 lines (625 loc) · 25.4 KB
/
external_config.py
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# Copyright 2017 Google LLC
#
# 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.
"""Define classes that describe external data sources.
These are used for both Table.externalDataConfiguration and
Job.configuration.query.tableDefinitions.
"""
from __future__ import absolute_import
import base64
import copy
from google.cloud.bigquery._helpers import _to_bytes
from google.cloud.bigquery._helpers import _bytes_to_json
from google.cloud.bigquery._helpers import _int_or_none
from google.cloud.bigquery._helpers import _str_or_none
from google.cloud.bigquery.schema import SchemaField
class ExternalSourceFormat(object):
"""The format for external data files.
Note that the set of allowed values for external data sources is different
than the set used for loading data (see
:class:`~google.cloud.bigquery.job.SourceFormat`).
"""
CSV = "CSV"
"""Specifies CSV format."""
GOOGLE_SHEETS = "GOOGLE_SHEETS"
"""Specifies Google Sheets format."""
NEWLINE_DELIMITED_JSON = "NEWLINE_DELIMITED_JSON"
"""Specifies newline delimited JSON format."""
AVRO = "AVRO"
"""Specifies Avro format."""
DATASTORE_BACKUP = "DATASTORE_BACKUP"
"""Specifies datastore backup format"""
BIGTABLE = "BIGTABLE"
"""Specifies Bigtable format."""
class BigtableColumn(object):
"""Options for a Bigtable column."""
def __init__(self):
self._properties = {}
@property
def encoding(self):
"""str: The encoding of the values when the type is not `STRING`
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumn.FIELDS.encoding
"""
return self._properties.get("encoding")
@encoding.setter
def encoding(self, value):
self._properties["encoding"] = value
@property
def field_name(self):
"""str: An identifier to use if the qualifier is not a valid BigQuery
field identifier
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumn.FIELDS.field_name
"""
return self._properties.get("fieldName")
@field_name.setter
def field_name(self, value):
self._properties["fieldName"] = value
@property
def only_read_latest(self):
"""bool: If this is set, only the latest version of value in this
column are exposed.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumn.FIELDS.only_read_latest
"""
return self._properties.get("onlyReadLatest")
@only_read_latest.setter
def only_read_latest(self, value):
self._properties["onlyReadLatest"] = value
@property
def qualifier_encoded(self):
"""Union[str, bytes]: The qualifier encoded in binary.
The type is ``str`` (Python 2.x) or ``bytes`` (Python 3.x). The module
will handle base64 encoding for you.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumn.FIELDS.qualifier_encoded
"""
prop = self._properties.get("qualifierEncoded")
if prop is None:
return None
return base64.standard_b64decode(_to_bytes(prop))
@qualifier_encoded.setter
def qualifier_encoded(self, value):
self._properties["qualifierEncoded"] = _bytes_to_json(value)
@property
def qualifier_string(self):
"""str: A valid UTF-8 string qualifier
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumn.FIELDS.qualifier_string
"""
return self._properties.get("qualifierString")
@qualifier_string.setter
def qualifier_string(self, value):
self._properties["qualifierString"] = value
@property
def type_(self):
"""str: The type to convert the value in cells of this column.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumn.FIELDS.type
"""
return self._properties.get("type")
@type_.setter
def type_(self, value):
self._properties["type"] = value
def to_api_repr(self):
"""Build an API representation of this object.
Returns:
Dict[str, Any]:
A dictionary in the format used by the BigQuery API.
"""
return copy.deepcopy(self._properties)
@classmethod
def from_api_repr(cls, resource):
"""Factory: construct a :class:`~.external_config.BigtableColumn`
instance given its API representation.
Args:
resource (Dict[str, Any]):
Definition of a :class:`~.external_config.BigtableColumn`
instance in the same representation as is returned from the
API.
Returns:
external_config.BigtableColumn: Configuration parsed from ``resource``.
"""
config = cls()
config._properties = copy.deepcopy(resource)
return config
class BigtableColumnFamily(object):
"""Options for a Bigtable column family."""
def __init__(self):
self._properties = {}
@property
def encoding(self):
"""str: The encoding of the values when the type is not `STRING`
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumnFamily.FIELDS.encoding
"""
return self._properties.get("encoding")
@encoding.setter
def encoding(self, value):
self._properties["encoding"] = value
@property
def family_id(self):
"""str: Identifier of the column family.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumnFamily.FIELDS.family_id
"""
return self._properties.get("familyId")
@family_id.setter
def family_id(self, value):
self._properties["familyId"] = value
@property
def only_read_latest(self):
"""bool: If this is set only the latest version of value are exposed
for all columns in this column family.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumnFamily.FIELDS.only_read_latest
"""
return self._properties.get("onlyReadLatest")
@only_read_latest.setter
def only_read_latest(self, value):
self._properties["onlyReadLatest"] = value
@property
def type_(self):
"""str: The type to convert the value in cells of this column family.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumnFamily.FIELDS.type
"""
return self._properties.get("type")
@type_.setter
def type_(self, value):
self._properties["type"] = value
@property
def columns(self):
"""List[BigtableColumn]: Lists of columns
that should be exposed as individual fields.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableColumnFamily.FIELDS.columns
"""
prop = self._properties.get("columns", [])
return [BigtableColumn.from_api_repr(col) for col in prop]
@columns.setter
def columns(self, value):
self._properties["columns"] = [col.to_api_repr() for col in value]
def to_api_repr(self):
"""Build an API representation of this object.
Returns:
Dict[str, Any]:
A dictionary in the format used by the BigQuery API.
"""
return copy.deepcopy(self._properties)
@classmethod
def from_api_repr(cls, resource):
"""Factory: construct a :class:`~.external_config.BigtableColumnFamily`
instance given its API representation.
Args:
resource (Dict[str, Any]):
Definition of a :class:`~.external_config.BigtableColumnFamily`
instance in the same representation as is returned from the
API.
Returns:
:class:`~.external_config.BigtableColumnFamily`:
Configuration parsed from ``resource``.
"""
config = cls()
config._properties = copy.deepcopy(resource)
return config
class BigtableOptions(object):
"""Options that describe how to treat Bigtable tables as BigQuery tables.
"""
_SOURCE_FORMAT = "BIGTABLE"
_RESOURCE_NAME = "bigtableOptions"
def __init__(self):
self._properties = {}
@property
def ignore_unspecified_column_families(self):
"""bool: If :data:`True`, ignore columns not specified in
:attr:`column_families` list. Defaults to :data:`False`.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableOptions.FIELDS.ignore_unspecified_column_families
"""
return self._properties.get("ignoreUnspecifiedColumnFamilies")
@ignore_unspecified_column_families.setter
def ignore_unspecified_column_families(self, value):
self._properties["ignoreUnspecifiedColumnFamilies"] = value
@property
def read_rowkey_as_string(self):
"""bool: If :data:`True`, rowkey column families will be read and
converted to string. Defaults to :data:`False`.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableOptions.FIELDS.read_rowkey_as_string
"""
return self._properties.get("readRowkeyAsString")
@read_rowkey_as_string.setter
def read_rowkey_as_string(self, value):
self._properties["readRowkeyAsString"] = value
@property
def column_families(self):
"""List[:class:`~.external_config.BigtableColumnFamily`]: List of
column families to expose in the table schema along with their types.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#BigtableOptions.FIELDS.column_families
"""
prop = self._properties.get("columnFamilies", [])
return [BigtableColumnFamily.from_api_repr(cf) for cf in prop]
@column_families.setter
def column_families(self, value):
self._properties["columnFamilies"] = [cf.to_api_repr() for cf in value]
def to_api_repr(self):
"""Build an API representation of this object.
Returns:
Dict[str, Any]:
A dictionary in the format used by the BigQuery API.
"""
return copy.deepcopy(self._properties)
@classmethod
def from_api_repr(cls, resource):
"""Factory: construct a :class:`~.external_config.BigtableOptions`
instance given its API representation.
Args:
resource (Dict[str, Any]):
Definition of a :class:`~.external_config.BigtableOptions`
instance in the same representation as is returned from the
API.
Returns:
BigtableOptions: Configuration parsed from ``resource``.
"""
config = cls()
config._properties = copy.deepcopy(resource)
return config
class CSVOptions(object):
"""Options that describe how to treat CSV files as BigQuery tables."""
_SOURCE_FORMAT = "CSV"
_RESOURCE_NAME = "csvOptions"
def __init__(self):
self._properties = {}
@property
def allow_jagged_rows(self):
"""bool: If :data:`True`, BigQuery treats missing trailing columns as
null values. Defaults to :data:`False`.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#CsvOptions.FIELDS.allow_jagged_rows
"""
return self._properties.get("allowJaggedRows")
@allow_jagged_rows.setter
def allow_jagged_rows(self, value):
self._properties["allowJaggedRows"] = value
@property
def allow_quoted_newlines(self):
"""bool: If :data:`True`, quoted data sections that contain newline
characters in a CSV file are allowed. Defaults to :data:`False`.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#CsvOptions.FIELDS.allow_quoted_newlines
"""
return self._properties.get("allowQuotedNewlines")
@allow_quoted_newlines.setter
def allow_quoted_newlines(self, value):
self._properties["allowQuotedNewlines"] = value
@property
def encoding(self):
"""str: The character encoding of the data.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#CsvOptions.FIELDS.encoding
"""
return self._properties.get("encoding")
@encoding.setter
def encoding(self, value):
self._properties["encoding"] = value
@property
def field_delimiter(self):
"""str: The separator for fields in a CSV file. Defaults to comma (',').
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#CsvOptions.FIELDS.field_delimiter
"""
return self._properties.get("fieldDelimiter")
@field_delimiter.setter
def field_delimiter(self, value):
self._properties["fieldDelimiter"] = value
@property
def quote_character(self):
"""str: The value that is used to quote data sections in a CSV file.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#CsvOptions.FIELDS.quote
"""
return self._properties.get("quote")
@quote_character.setter
def quote_character(self, value):
self._properties["quote"] = value
@property
def skip_leading_rows(self):
"""int: The number of rows at the top of a CSV file.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#CsvOptions.FIELDS.skip_leading_rows
"""
return _int_or_none(self._properties.get("skipLeadingRows"))
@skip_leading_rows.setter
def skip_leading_rows(self, value):
self._properties["skipLeadingRows"] = str(value)
def to_api_repr(self):
"""Build an API representation of this object.
Returns:
Dict[str, Any]: A dictionary in the format used by the BigQuery API.
"""
return copy.deepcopy(self._properties)
@classmethod
def from_api_repr(cls, resource):
"""Factory: construct a :class:`~.external_config.CSVOptions` instance
given its API representation.
Args:
resource (Dict[str, Any]):
Definition of a :class:`~.external_config.CSVOptions`
instance in the same representation as is returned from the
API.
Returns:
CSVOptions: Configuration parsed from ``resource``.
"""
config = cls()
config._properties = copy.deepcopy(resource)
return config
class GoogleSheetsOptions(object):
"""Options that describe how to treat Google Sheets as BigQuery tables."""
_SOURCE_FORMAT = "GOOGLE_SHEETS"
_RESOURCE_NAME = "googleSheetsOptions"
def __init__(self):
self._properties = {}
@property
def skip_leading_rows(self):
"""int: The number of rows at the top of a sheet that BigQuery will
skip when reading the data.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#GoogleSheetsOptions.FIELDS.skip_leading_rows
"""
return _int_or_none(self._properties.get("skipLeadingRows"))
@skip_leading_rows.setter
def skip_leading_rows(self, value):
self._properties["skipLeadingRows"] = str(value)
@property
def range(self):
"""str: The range of a sheet that BigQuery will query from.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#GoogleSheetsOptions.FIELDS.range
"""
return _str_or_none(self._properties.get("range"))
@range.setter
def range(self, value):
self._properties["range"] = value
def to_api_repr(self):
"""Build an API representation of this object.
Returns:
Dict[str, Any]: A dictionary in the format used by the BigQuery API.
"""
return copy.deepcopy(self._properties)
@classmethod
def from_api_repr(cls, resource):
"""Factory: construct a :class:`~.external_config.GoogleSheetsOptions`
instance given its API representation.
Args:
resource (Dict[str, Any]):
Definition of a :class:`~.external_config.GoogleSheetsOptions`
instance in the same representation as is returned from the
API.
Returns:
GoogleSheetsOptions: Configuration parsed from ``resource``.
"""
config = cls()
config._properties = copy.deepcopy(resource)
return config
_OPTION_CLASSES = (BigtableOptions, CSVOptions, GoogleSheetsOptions)
class HivePartitioningOptions(object):
"""[Beta] Options that configure hive partitioning.
.. note::
**Experimental**. This feature is experimental and might change or
have limited support.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#HivePartitioningOptions
"""
def __init__(self):
self._properties = {}
@property
def mode(self):
"""Optional[str]: When set, what mode of hive partitioning to use when reading data.
Two modes are supported: "AUTO" and "STRINGS".
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#HivePartitioningOptions.FIELDS.mode
"""
return self._properties.get("mode")
@mode.setter
def mode(self, value):
self._properties["mode"] = value
@property
def source_uri_prefix(self):
"""Optional[str]: When hive partition detection is requested, a common prefix for
all source URIs is required.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#HivePartitioningOptions.FIELDS.source_uri_prefix
"""
return self._properties.get("sourceUriPrefix")
@source_uri_prefix.setter
def source_uri_prefix(self, value):
self._properties["sourceUriPrefix"] = value
@property
def require_partition_filter(self):
"""Optional[bool]: If set to true, queries over the partitioned table require a
partition filter that can be used for partition elimination to be
specified.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#HivePartitioningOptions.FIELDS.mode
"""
return self._properties.get("requirePartitionFilter")
@require_partition_filter.setter
def require_partition_filter(self, value):
self._properties["requirePartitionFilter"] = value
def to_api_repr(self):
"""Build an API representation of this object.
Returns:
Dict[str, Any]: A dictionary in the format used by the BigQuery API.
"""
return copy.deepcopy(self._properties)
@classmethod
def from_api_repr(cls, resource):
"""Factory: construct a :class:`~.external_config.HivePartitioningOptions`
instance given its API representation.
Args:
resource (Dict[str, Any]):
Definition of a :class:`~.external_config.HivePartitioningOptions`
instance in the same representation as is returned from the
API.
Returns:
HivePartitioningOptions: Configuration parsed from ``resource``.
"""
config = cls()
config._properties = copy.deepcopy(resource)
return config
class ExternalConfig(object):
"""Description of an external data source.
Args:
source_format (ExternalSourceFormat):
See :attr:`source_format`.
"""
def __init__(self, source_format):
self._properties = {"sourceFormat": source_format}
self._options = None
for optcls in _OPTION_CLASSES:
if source_format == optcls._SOURCE_FORMAT:
self._options = optcls()
break
@property
def source_format(self):
""":class:`~.external_config.ExternalSourceFormat`:
Format of external source.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.source_format
"""
return self._properties["sourceFormat"]
@property
def options(self):
"""Optional[Dict[str, Any]]: Source-specific options."""
return self._options
@property
def autodetect(self):
"""bool: If :data:`True`, try to detect schema and format options
automatically.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.autodetect
"""
return self._properties.get("autodetect")
@autodetect.setter
def autodetect(self, value):
self._properties["autodetect"] = value
@property
def compression(self):
"""str: The compression type of the data source.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.compression
"""
return self._properties.get("compression")
@compression.setter
def compression(self, value):
self._properties["compression"] = value
@property
def hive_partitioning(self):
"""Optional[:class:`~.external_config.HivePartitioningOptions`]: [Beta] When set, \
it configures hive partitioning support.
.. note::
**Experimental**. This feature is experimental and might change or
have limited support.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.hive_partitioning_options
"""
prop = self._properties.get("hivePartitioningOptions")
if prop is None:
return None
return HivePartitioningOptions.from_api_repr(prop)
@hive_partitioning.setter
def hive_partitioning(self, value):
prop = value.to_api_repr() if value is not None else None
self._properties["hivePartitioningOptions"] = prop
@property
def ignore_unknown_values(self):
"""bool: If :data:`True`, extra values that are not represented in the
table schema are ignored. Defaults to :data:`False`.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.ignore_unknown_values
"""
return self._properties.get("ignoreUnknownValues")
@ignore_unknown_values.setter
def ignore_unknown_values(self, value):
self._properties["ignoreUnknownValues"] = value
@property
def max_bad_records(self):
"""int: The maximum number of bad records that BigQuery can ignore when
reading data.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.max_bad_records
"""
return self._properties.get("maxBadRecords")
@max_bad_records.setter
def max_bad_records(self, value):
self._properties["maxBadRecords"] = value
@property
def source_uris(self):
"""List[str]: URIs that point to your data in Google Cloud.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.source_uris
"""
return self._properties.get("sourceUris", [])
@source_uris.setter
def source_uris(self, value):
self._properties["sourceUris"] = value
@property
def schema(self):
"""List[:class:`~google.cloud.bigquery.schema.SchemaField`]: The schema
for the data.
See
https://cloud.google.com/bigquery/docs/reference/rest/v2/tables#ExternalDataConfiguration.FIELDS.schema
"""
prop = self._properties.get("schema", {})
return [SchemaField.from_api_repr(field) for field in prop.get("fields", [])]
@schema.setter
def schema(self, value):
prop = value
if value is not None:
prop = {"fields": [field.to_api_repr() for field in value]}
self._properties["schema"] = prop
def to_api_repr(self):
"""Build an API representation of this object.
Returns:
Dict[str, Any]:
A dictionary in the format used by the BigQuery API.
"""
config = copy.deepcopy(self._properties)
if self.options is not None:
r = self.options.to_api_repr()
if r != {}:
config[self.options._RESOURCE_NAME] = r
return config
@classmethod
def from_api_repr(cls, resource):
"""Factory: construct an :class:`~.external_config.ExternalConfig`
instance given its API representation.
Args:
resource (Dict[str, Any]):
Definition of an :class:`~.external_config.ExternalConfig`
instance in the same representation as is returned from the
API.
Returns:
ExternalConfig: Configuration parsed from ``resource``.
"""
config = cls(resource["sourceFormat"])
for optcls in _OPTION_CLASSES:
opts = resource.get(optcls._RESOURCE_NAME)
if opts is not None:
config._options = optcls.from_api_repr(opts)
break
config._properties = copy.deepcopy(resource)
return config