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superset/tests/db_engine_specs_test.py

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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.
import inspect
import mock
from sqlalchemy import column, select, table
from sqlalchemy.dialects.mssql import pymssql
from sqlalchemy.types import String, UnicodeText
from superset import db_engine_specs
from superset.db_engine_specs import (
BaseEngineSpec, BQEngineSpec, HiveEngineSpec, MssqlEngineSpec,
MySQLEngineSpec, OracleEngineSpec, PrestoEngineSpec,
)
from superset.models.core import Database
from .base_tests import SupersetTestCase
class DbEngineSpecsTestCase(SupersetTestCase):
def test_0_progress(self):
log = """
17/02/07 18:26:27 INFO log.PerfLogger: <PERFLOG method=compile from=org.apache.hadoop.hive.ql.Driver>
17/02/07 18:26:27 INFO log.PerfLogger: <PERFLOG method=parse from=org.apache.hadoop.hive.ql.Driver>
""".split('\n') # noqa ignore: E501
self.assertEquals(
0, HiveEngineSpec.progress(log))
def test_number_of_jobs_progress(self):
log = """
17/02/07 19:15:55 INFO ql.Driver: Total jobs = 2
""".split('\n')
self.assertEquals(0, HiveEngineSpec.progress(log))
def test_job_1_launched_progress(self):
log = """
17/02/07 19:15:55 INFO ql.Driver: Total jobs = 2
17/02/07 19:15:55 INFO ql.Driver: Launching Job 1 out of 2
""".split('\n')
self.assertEquals(0, HiveEngineSpec.progress(log))
def test_job_1_launched_stage_1_0_progress(self):
log = """
17/02/07 19:15:55 INFO ql.Driver: Total jobs = 2
17/02/07 19:15:55 INFO ql.Driver: Launching Job 1 out of 2
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 0%, reduce = 0%
""".split('\n') # noqa ignore: E501
self.assertEquals(0, HiveEngineSpec.progress(log))
def test_job_1_launched_stage_1_map_40_progress(self):
log = """
17/02/07 19:15:55 INFO ql.Driver: Total jobs = 2
17/02/07 19:15:55 INFO ql.Driver: Launching Job 1 out of 2
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 0%, reduce = 0%
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 40%, reduce = 0%
""".split('\n') # noqa ignore: E501
self.assertEquals(10, HiveEngineSpec.progress(log))
def test_job_1_launched_stage_1_map_80_reduce_40_progress(self):
log = """
17/02/07 19:15:55 INFO ql.Driver: Total jobs = 2
17/02/07 19:15:55 INFO ql.Driver: Launching Job 1 out of 2
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 0%, reduce = 0%
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 40%, reduce = 0%
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 80%, reduce = 40%
""".split('\n') # noqa ignore: E501
self.assertEquals(30, HiveEngineSpec.progress(log))
def test_job_1_launched_stage_2_stages_progress(self):
log = """
17/02/07 19:15:55 INFO ql.Driver: Total jobs = 2
17/02/07 19:15:55 INFO ql.Driver: Launching Job 1 out of 2
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 0%, reduce = 0%
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 40%, reduce = 0%
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 80%, reduce = 40%
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-2 map = 0%, reduce = 0%
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 100%, reduce = 0%
""".split('\n') # noqa ignore: E501
self.assertEquals(12, HiveEngineSpec.progress(log))
def test_job_2_launched_stage_2_stages_progress(self):
log = """
17/02/07 19:15:55 INFO ql.Driver: Total jobs = 2
17/02/07 19:15:55 INFO ql.Driver: Launching Job 1 out of 2
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 100%, reduce = 0%
17/02/07 19:15:55 INFO ql.Driver: Launching Job 2 out of 2
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 0%, reduce = 0%
17/02/07 19:16:09 INFO exec.Task: 2017-02-07 19:16:09,173 Stage-1 map = 40%, reduce = 0%
""".split('\n') # noqa ignore: E501
self.assertEquals(60, HiveEngineSpec.progress(log))
def test_hive_error_msg(self):
msg = (
'{...} errorMessage="Error while compiling statement: FAILED: '
'SemanticException [Error 10001]: Line 4'
':5 Table not found \'fact_ridesfdslakj\'", statusCode=3, '
'sqlState=\'42S02\', errorCode=10001)){...}')
self.assertEquals((
'Error while compiling statement: FAILED: '
'SemanticException [Error 10001]: Line 4:5 '
"Table not found 'fact_ridesfdslakj'"),
HiveEngineSpec.extract_error_message(Exception(msg)))
e = Exception("Some string that doesn't match the regex")
self.assertEquals(
str(e), HiveEngineSpec.extract_error_message(e))
msg = (
'errorCode=10001, '
'errorMessage="Error while compiling statement"), operationHandle'
'=None)"'
)
self.assertEquals((
'Error while compiling statement'),
HiveEngineSpec.extract_error_message(Exception(msg)))
def get_generic_database(self):
return Database(sqlalchemy_uri='mysql://localhost')
def sql_limit_regex(
self, sql, expected_sql,
engine_spec_class=MySQLEngineSpec,
limit=1000):
main = self.get_generic_database()
limited = engine_spec_class.apply_limit_to_sql(sql, limit, main)
self.assertEquals(expected_sql, limited)
def test_extract_limit_from_query(self, engine_spec_class=MySQLEngineSpec):
q0 = 'select * from table'
q1 = 'select * from mytable limit 10'
q2 = 'select * from (select * from my_subquery limit 10) where col=1 limit 20'
q3 = 'select * from (select * from my_subquery limit 10);'
q4 = 'select * from (select * from my_subquery limit 10) where col=1 limit 20;'
q5 = 'select * from mytable limit 10, 20'
q6 = 'select * from mytable limit 10 offset 20'
q7 = 'select * from mytable limit'
q8 = 'select * from mytable limit 10.0'
q9 = 'select * from mytable limit x'
q10 = 'select * from mytable limit x, 20'
q11 = 'select * from mytable limit x offset 20'
self.assertEqual(engine_spec_class.get_limit_from_sql(q0), None)
self.assertEqual(engine_spec_class.get_limit_from_sql(q1), 10)
self.assertEqual(engine_spec_class.get_limit_from_sql(q2), 20)
self.assertEqual(engine_spec_class.get_limit_from_sql(q3), None)
self.assertEqual(engine_spec_class.get_limit_from_sql(q4), 20)
self.assertEqual(engine_spec_class.get_limit_from_sql(q5), 10)
self.assertEqual(engine_spec_class.get_limit_from_sql(q6), 10)
self.assertEqual(engine_spec_class.get_limit_from_sql(q7), None)
self.assertEqual(engine_spec_class.get_limit_from_sql(q8), None)
self.assertEqual(engine_spec_class.get_limit_from_sql(q9), None)
self.assertEqual(engine_spec_class.get_limit_from_sql(q10), None)
self.assertEqual(engine_spec_class.get_limit_from_sql(q11), None)
def test_wrapped_query(self):
self.sql_limit_regex(
'SELECT * FROM a',
'SELECT * \nFROM (SELECT * FROM a) AS inner_qry \n LIMIT 1000',
MssqlEngineSpec,
)
def test_wrapped_semi(self):
self.sql_limit_regex(
'SELECT * FROM a;',
'SELECT * \nFROM (SELECT * FROM a) AS inner_qry \n LIMIT 1000',
MssqlEngineSpec,
)
def test_wrapped_semi_tabs(self):
self.sql_limit_regex(
'SELECT * FROM a \t \n ; \t \n ',
'SELECT * \nFROM (SELECT * FROM a) AS inner_qry \n LIMIT 1000',
MssqlEngineSpec,
)
def test_simple_limit_query(self):
self.sql_limit_regex(
'SELECT * FROM a',
'SELECT * FROM a LIMIT 1000',
)
def test_modify_limit_query(self):
self.sql_limit_regex(
'SELECT * FROM a LIMIT 9999',
'SELECT * FROM a LIMIT 1000',
)
def test_limit_query_with_limit_subquery(self):
self.sql_limit_regex(
'SELECT * FROM (SELECT * FROM a LIMIT 10) LIMIT 9999',
'SELECT * FROM (SELECT * FROM a LIMIT 10) LIMIT 1000',
)
def test_limit_with_expr(self):
self.sql_limit_regex(
"""
SELECT
'LIMIT 777' AS a
, b
FROM
table
LIMIT 99990""",
"""SELECT
'LIMIT 777' AS a
, b
FROM
table
LIMIT 1000""",
)
def test_limit_expr_and_semicolon(self):
self.sql_limit_regex(
"""
SELECT
'LIMIT 777' AS a
, b
FROM
table
LIMIT 99990 ;""",
"""SELECT
'LIMIT 777' AS a
, b
FROM
table
LIMIT 1000""",
)
def test_get_datatype(self):
self.assertEquals('STRING', PrestoEngineSpec.get_datatype('string'))
self.assertEquals('TINY', MySQLEngineSpec.get_datatype(1))
self.assertEquals('VARCHAR', MySQLEngineSpec.get_datatype(15))
self.assertEquals('VARCHAR', BaseEngineSpec.get_datatype('VARCHAR'))
def test_limit_with_implicit_offset(self):
self.sql_limit_regex(
"""
SELECT
'LIMIT 777' AS a
, b
FROM
table
LIMIT 99990, 999999""",
"""SELECT
'LIMIT 777' AS a
, b
FROM
table
LIMIT 99990, 1000""",
)
def test_limit_with_explicit_offset(self):
self.sql_limit_regex(
"""
SELECT
'LIMIT 777' AS a
, b
FROM
table
LIMIT 99990
OFFSET 999999""",
"""SELECT
'LIMIT 777' AS a
, b
FROM
table
LIMIT 1000
OFFSET 999999""",
)
def test_limit_with_non_token_limit(self):
self.sql_limit_regex(
"""
SELECT
'LIMIT 777'""",
"""
SELECT
'LIMIT 777' LIMIT 1000""",
)
def test_time_grain_blacklist(self):
blacklist = ['PT1M']
time_grains = {
'PT1S': 'second',
'PT1M': 'minute',
}
time_grain_functions = {
'PT1S': '{col}',
'PT1M': '{col}',
}
time_grains = db_engine_specs._create_time_grains_tuple(time_grains,
time_grain_functions,
blacklist)
self.assertEqual(1, len(time_grains))
self.assertEqual('PT1S', time_grains[0].duration)
def test_engine_time_grain_validity(self):
time_grains = set(db_engine_specs.builtin_time_grains.keys())
# loop over all subclasses of BaseEngineSpec
for cls_name, cls in inspect.getmembers(db_engine_specs):
if inspect.isclass(cls) and issubclass(cls, BaseEngineSpec) \
and cls is not BaseEngineSpec:
# make sure time grain functions have been defined
self.assertGreater(len(cls.time_grain_functions), 0)
# make sure that all defined time grains are supported
defined_time_grains = {grain.duration for grain in cls.get_time_grains()}
intersection = time_grains.intersection(defined_time_grains)
self.assertSetEqual(defined_time_grains, intersection, cls_name)
def test_presto_get_view_names_return_empty_list(self):
self.assertEquals([], PrestoEngineSpec.get_view_names(mock.ANY, mock.ANY))
def test_hive_get_view_names_return_empty_list(self):
self.assertEquals([], HiveEngineSpec.get_view_names(mock.ANY, mock.ANY))
def test_bigquery_sqla_column_label(self):
label = BQEngineSpec.make_label_compatible(column('Col').name)
label_expected = 'Col'
self.assertEqual(label, label_expected)
label = BQEngineSpec.make_label_compatible(column('SUM(x)').name)
label_expected = 'SUM_x__5f110b965a993675bc4953bb3e03c4a5'
self.assertEqual(label, label_expected)
label = BQEngineSpec.make_label_compatible(column('SUM[x]').name)
label_expected = 'SUM_x__7ebe14a3f9534aeee125449b0bc083a8'
self.assertEqual(label, label_expected)
label = BQEngineSpec.make_label_compatible(column('12345_col').name)
label_expected = '_12345_col_8d3906e2ea99332eb185f7f8ecb2ffd6'
self.assertEqual(label, label_expected)
def test_oracle_sqla_column_name_length_exceeded(self):
col = column('This_Is_32_Character_Column_Name')
label = OracleEngineSpec.make_label_compatible(col.name)
self.assertEqual(label.quote, True)
label_expected = '3b26974078683be078219674eeb8f5'
self.assertEqual(label, label_expected)
def test_mssql_column_types(self):
def assert_type(type_string, type_expected):
type_assigned = MssqlEngineSpec.get_sqla_column_type(type_string)
if type_expected is None:
self.assertIsNone(type_assigned)
else:
self.assertIsInstance(type_assigned, type_expected)
assert_type('INT', None)
assert_type('STRING', String)
assert_type('CHAR(10)', String)
assert_type('VARCHAR(10)', String)
assert_type('TEXT', String)
assert_type('NCHAR(10)', UnicodeText)
assert_type('NVARCHAR(10)', UnicodeText)
assert_type('NTEXT', UnicodeText)
def test_mssql_where_clause_n_prefix(self):
dialect = pymssql.dialect()
spec = MssqlEngineSpec
str_col = column('col', type_=spec.get_sqla_column_type('VARCHAR(10)'))
unicode_col = column('unicode_col', type_=spec.get_sqla_column_type('NTEXT'))
tbl = table('tbl')
sel = select([str_col, unicode_col]).\
select_from(tbl).\
where(str_col == 'abc').\
where(unicode_col == 'abc')
query = str(sel.compile(dialect=dialect, compile_kwargs={'literal_binds': True}))
query_expected = "SELECT col, unicode_col \nFROM tbl \nWHERE col = 'abc' AND unicode_col = N'abc'" # noqa
self.assertEqual(query, query_expected)
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