def test_get_trans_in_sql_case3(self):
"""
Test obfuscation where given transformations has an unsupported transformation type
Test should fail
"""
table_name = 'public-my_table'
transformations = [{
'field_id': 'col_7',
'tap_stream_name': 'public-my_table',
'type': 'RANDOM'
}, {
'field_id': 'col_1',
'tap_stream_name': 'public-my_other_table',
'type': 'HASH'
}]
with self.assertRaises(ValueError):
TransformationHelper.get_trans_in_sql_flavor(
table_name, transformations, SQLFlavor('snowflake'))
def test_get_trans_in_sql_case2(self):
"""
Test obfuscation where given transformations are empty and sql is Postgres
Test should pass
"""
table_name = 'public-my_table'
transformations = []
trans = TransformationHelper.get_trans_in_sql_flavor(
table_name, transformations, SQLFlavor('postgres'))
self.assertFalse(trans)
def test_get_trans_in_sql_case4(self):
"""
Test obfuscation where given transformations have no conditions and sql flavor is Snowflake
Test should pass
"""
table_name = 'public-my_table'
transformations = [
{
'field_id': 'col_1',
'tap_stream_name': 'public-my_table',
'type': 'SET-NULL',
},
{
'field_id': 'col_2',
'tap_stream_name': 'public-my_table',
'type': 'MASK-HIDDEN',
},
{
'field_id': 'col_3',
'tap_stream_name': 'public-my_table',
'type': 'MASK-DATE',
},
{
'field_id': 'col_4',
'tap_stream_name': 'public-my_table',
'safe_field_id': '"COL_4"',
'type': 'MASK-NUMBER',
},
{
'field_id': 'col_5',
'tap_stream_name': 'public-my_table',
'type': 'HASH'
},
{
'field_id': 'col_1',
'tap_stream_name': 'public-my_other_table',
'type': 'HASH',
},
{
'field_id': 'col_6',
'tap_stream_name': 'public-my_table',
'type': 'HASH-SKIP-FIRST-5',
},
{
'field_id': 'col_7',
'tap_stream_name': 'public-my_table',
'type': 'MASK-STRING-SKIP-ENDS-3',
},
]
trans = TransformationHelper.get_trans_in_sql_flavor(
table_name, transformations, SQLFlavor('snowflake'))
self.assertListEqual(
trans,
[
{
'trans': '"COL_1" = NULL',
'conditions': None
},
{
'trans': '"COL_2" = \'hidden\'',
'conditions': None
},
{
'trans':
'"COL_3" = TIMESTAMP_NTZ_FROM_PARTS(DATE_FROM_PARTS(YEAR("COL_3"), 1, 1),'
'TO_TIME("COL_3"))',
'conditions':
None,
},
{
'trans': '"COL_4" = 0',
'conditions': None
},
{
'trans': '"COL_5" = SHA2("COL_5", 256)',
'conditions': None
},
{
'trans':
'"COL_6" = CONCAT(SUBSTRING("COL_6", 1, 5), SHA2(SUBSTRING("COL_6", 5 + 1), 256))',
'conditions': None,
},
{
'trans':
'"COL_7" = CASE WHEN LENGTH("COL_7") > 2 * 3 THEN '
'CONCAT(SUBSTRING("COL_7", 1, 3), REPEAT(\'*\', LENGTH("COL_7")-(2 * 3)), '
'SUBSTRING("COL_7", LENGTH("COL_7")-3+1, 3)) '
'ELSE REPEAT(\'*\', LENGTH("COL_7")) END',
'conditions':
None,
},
],
)
def test_get_trans_in_sql_case7(self):
"""
Test obfuscation where given transformations have conditions and sql flavor is Postgres
Test should pass
"""
table_name = 'public-my_table'
transformations = [
{
'field_id': 'col_1',
'tap_stream_name': 'public-my_table',
'type': 'SET-NULL',
},
{
'field_id':
'col_2',
'tap_stream_name':
'public-my_table',
'type':
'MASK-HIDDEN',
'when': [
{
'column': 'col_4',
'safe_column': '"COL_4"',
'equals': None
},
{
'column': 'col_1',
},
],
},
{
'field_id': 'col_3',
'tap_stream_name': 'public-my_table',
'type': 'MASK-DATE',
'when': [{
'column': 'col_5',
'equals': 'some_value'
}],
},
{
'field_id': 'col_4',
'tap_stream_name': 'public-my_table',
'type': 'MASK-NUMBER',
},
{
'field_id': 'col_5',
'tap_stream_name': 'public-my_table',
'type': 'HASH'
},
{
'field_id': 'col_10',
'tap_stream_name': 'public-my_other_table',
'type': 'HASH',
},
{
'field_id':
'col_6',
'tap_stream_name':
'public-my_table',
'type':
'HASH-SKIP-FIRST-5',
'when': [
{
'column': 'col_1',
'equals': 30
},
{
'column': 'col_2',
'regex_match': r'[0-9]{3}\.[0-9]{3}'
},
],
},
{
'field_id':
'col_7',
'tap_stream_name':
'public-my_table',
'type':
'MASK-STRING-SKIP-ENDS-3',
'when': [
{
'column': 'col_1',
'equals': 30
},
{
'column': 'col_2',
'regex_match': r'[0-9]{3}\.[0-9]{3}'
},
{
'column': 'col_4',
'equals': None
},
],
},
]
trans = TransformationHelper.get_trans_in_sql_flavor(
table_name, transformations, SQLFlavor('postgres'))
self.assertListEqual(
trans,
[
{
'trans': '"col_1" = NULL',
'conditions': None,
},
{
'trans': '"col_2" = \'hidden\'',
'conditions': '("col_4" IS NULL)',
},
{
'trans':
'"col_3" = MAKE_TIMESTAMP('
'DATE_PART(\'year\', "col_3")::int, '
'1, '
'1, '
'DATE_PART(\'hour\', "col_3")::int, '
'DATE_PART(\'minute\', "col_3")::int, '
'DATE_PART(\'second\', "col_3")::double precision'
')',
'conditions':
'("col_5" = \'some_value\')',
},
{
'trans': '"col_4" = 0',
'conditions': None,
},
{
'trans':
'"col_5" = ENCODE(DIGEST("col_5", \'sha256\'), \'hex\')',
'conditions': None,
},
{
'trans':
'"col_6" = CONCAT(SUBSTRING("col_6", 1, 5), ENCODE(DIGEST(SUBSTRING("col_6", 5 + 1), '
'\'sha256\'), \'hex\'))',
'conditions':
'("col_1" = 30) AND ("col_2" ~ \'[0-9]{3}\.[0-9]{3}\')', # pylint: disable=W1401 # noqa: W605, E501
},
{
'trans':
'"col_7" = CASE WHEN LENGTH("col_7") > 2 * 3 THEN '
'CONCAT(SUBSTRING("col_7", 1, 3), REPEAT(\'*\', LENGTH("col_7")-(2 * 3)), '
'SUBSTRING("col_7", LENGTH("col_7")-3+1, 3)) '
'ELSE REPEAT(\'*\', LENGTH("col_7")) END',
'conditions':
'("col_1" = 30) AND ("col_2" ~ \'[0-9]{3}\.[0-9]{3}\') ' # pylint: disable=W1401 # noqa: W605, E501
'AND ("col_4" IS NULL)',
},
],
)
def test_get_trans_in_sql_case6(self):
"""
Test obfuscation where given transformations have conditions and sql flavor is Snowflake
Test should pass
"""
table_name = 'public-my_table'
transformations = [
{
'field_id': 'col_1',
'tap_stream_name': 'public-my_table',
'type': 'SET-NULL',
},
{
'field_id':
'col_2',
'tap_stream_name':
'public-my_table',
'type':
'MASK-HIDDEN',
'when': [
{
'column': 'col_4',
'safe_column': '"COL_4"',
'equals': None
},
{
'column': 'col_1',
},
],
},
{
'field_id': 'col_3',
'tap_stream_name': 'public-my_table',
'type': 'MASK-DATE',
'when': [{
'column': 'col_5',
'equals': 'some_value'
}],
},
{
'field_id': 'col_4',
'tap_stream_name': 'public-my_table',
'type': 'MASK-NUMBER',
},
{
'field_id': 'col_5',
'tap_stream_name': 'public-my_table',
'type': 'HASH'
},
{
'field_id': 'col_10',
'tap_stream_name': 'public-my_other_table',
'type': 'HASH',
},
{
'field_id':
'col_6',
'tap_stream_name':
'public-my_table',
'type':
'HASH-SKIP-FIRST-5',
'when': [
{
'column': 'col_1',
'equals': 30
},
{
'column': 'col_2',
'regex_match': r'[0-9]{3}\.[0-9]{3}'
},
],
},
{
'field_id':
'col_7',
'tap_stream_name':
'public-my_table',
'type':
'MASK-STRING-SKIP-ENDS-3',
'when': [
{
'column': 'col_1',
'equals': 30
},
{
'column': 'col_2',
'regex_match': r'[0-9]{3}\.[0-9]{3}'
},
{
'column': 'col_4',
'equals': None
},
],
},
]
trans = TransformationHelper.get_trans_in_sql_flavor(
table_name, transformations, SQLFlavor('snowflake'))
self.assertListEqual(
trans,
[
{
'trans': '"COL_1" = NULL',
'conditions': None,
},
{
'trans': '"COL_2" = \'hidden\'',
'conditions': '("COL_4" IS NULL)',
},
{
'trans':
'"COL_3" = TIMESTAMP_NTZ_FROM_PARTS(DATE_FROM_PARTS(YEAR("COL_3"), 1, 1),'
'TO_TIME("COL_3"))',
'conditions':
'("COL_5" = \'some_value\')',
},
{
'trans': '"COL_4" = 0',
'conditions': None,
},
{
'trans': '"COL_5" = SHA2("COL_5", 256)',
'conditions': None,
},
{
'trans':
'"COL_6" = CONCAT(SUBSTRING("COL_6", 1, 5), SHA2(SUBSTRING("COL_6", 5 + 1), 256))',
'conditions':
'("COL_1" = 30) AND ("COL_2" '
'REGEXP \'[0-9]{3}\.[0-9]{3}\')', # pylint: disable=W1401 # noqa: W605
},
{
'trans':
'"COL_7" = CASE WHEN LENGTH("COL_7") > 2 * 3 THEN '
'CONCAT(SUBSTRING("COL_7", 1, 3), REPEAT(\'*\', LENGTH("COL_7")-(2 * 3)), '
'SUBSTRING("COL_7", LENGTH("COL_7")-3+1, 3)) '
'ELSE REPEAT(\'*\', LENGTH("COL_7")) END',
'conditions':
'("COL_1" = 30) AND ("COL_2" '
'REGEXP \'[0-9]{3}\.[0-9]{3}\') AND ("COL_4" IS NULL)', # pylint: disable=W1401 # noqa: W605
},
],
)
def test_get_trans_in_sql_case5(self):
"""
Test obfuscation where given transformations have no conditions and sql flavor is Postgres
Test should pass
"""
table_name = 'public-my_table'
transformations = [
{
'field_id': 'col_1',
'tap_stream_name': 'public-my_table',
'type': 'SET-NULL',
},
{
'field_id': 'col_2',
'tap_stream_name': 'public-my_table',
'type': 'MASK-HIDDEN',
},
{
'field_id': 'col_3',
'tap_stream_name': 'public-my_table',
'type': 'MASK-DATE',
},
{
'field_id': 'col_4',
'tap_stream_name': 'public-my_table',
'safe_field_id': '"COL_4"',
'type': 'MASK-NUMBER',
},
{
'field_id': 'col_5',
'tap_stream_name': 'public-my_table',
'type': 'HASH'
},
{
'field_id': 'col_1',
'tap_stream_name': 'public-my_other_table',
'type': 'HASH',
},
{
'field_id': 'col_6',
'tap_stream_name': 'public-my_table',
'type': 'HASH-SKIP-FIRST-5',
},
]
trans = TransformationHelper.get_trans_in_sql_flavor(
table_name, transformations, SQLFlavor('postgres'))
self.assertListEqual(
trans,
[
{
'trans': '"col_1" = NULL',
'conditions': None
},
{
'trans': '"col_2" = \'hidden\'',
'conditions': None
},
{
'trans':
'"col_3" = MAKE_TIMESTAMP('
'DATE_PART(\'year\', "col_3")::int, '
'1, '
'1, '
'DATE_PART(\'hour\', "col_3")::int, '
'DATE_PART(\'minute\', "col_3")::int, '
'DATE_PART(\'second\', "col_3")::double precision'
')',
'conditions':
None,
},
{
'trans': '"col_4" = 0',
'conditions': None
},
{
'trans':
'"col_5" = ENCODE(DIGEST("col_5", \'sha256\'), \'hex\')',
'conditions': None,
},
{
'trans': '"col_6" = CONCAT(SUBSTRING("col_6", 1, 5), '
'ENCODE(DIGEST(SUBSTRING("col_6", 5 + 1), \'sha256\'), \'hex\'))',
'conditions': None,
},
],
)