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2055ecc1ba
* feat: refactor error components and add database issue code * Apply suggestions from code review Co-authored-by: John Bodley <4567245+john-bodley@users.noreply.github.com> Co-authored-by: John Bodley <4567245+john-bodley@users.noreply.github.com>
102 lines
3.9 KiB
Python
102 lines
3.9 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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import json
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from datetime import datetime
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from typing import Optional, TYPE_CHECKING
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from urllib import parse
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from sqlalchemy.engine.url import URL
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from superset.db_engine_specs.postgres import PostgresBaseEngineSpec
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from superset.utils import core as utils
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if TYPE_CHECKING:
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from superset.models.core import Database # pylint: disable=unused-import
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class SnowflakeEngineSpec(PostgresBaseEngineSpec):
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engine = "snowflake"
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engine_name = "Snowflake"
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force_column_alias_quotes = True
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max_column_name_length = 256
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_time_grain_expressions = {
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None: "{col}",
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"PT1S": "DATE_TRUNC('SECOND', {col})",
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"PT1M": "DATE_TRUNC('MINUTE', {col})",
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"PT5M": "DATEADD(MINUTE, FLOOR(DATE_PART(MINUTE, {col}) / 5) * 5, \
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DATE_TRUNC('HOUR', {col}))",
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"PT10M": "DATEADD(MINUTE, FLOOR(DATE_PART(MINUTE, {col}) / 10) * 10, \
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DATE_TRUNC('HOUR', {col}))",
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"PT15M": "DATEADD(MINUTE, FLOOR(DATE_PART(MINUTE, {col}) / 15) * 15, \
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DATE_TRUNC('HOUR', {col}))",
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"PT0.5H": "DATEADD(MINUTE, FLOOR(DATE_PART(MINUTE, {col}) / 30) * 30, \
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DATE_TRUNC('HOUR', {col}))",
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"PT1H": "DATE_TRUNC('HOUR', {col})",
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"P1D": "DATE_TRUNC('DAY', {col})",
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"P1W": "DATE_TRUNC('WEEK', {col})",
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"P1M": "DATE_TRUNC('MONTH', {col})",
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"P0.25Y": "DATE_TRUNC('QUARTER', {col})",
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"P1Y": "DATE_TRUNC('YEAR', {col})",
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}
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@classmethod
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def adjust_database_uri(
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cls, uri: URL, selected_schema: Optional[str] = None
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) -> None:
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database = uri.database
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if "/" in uri.database:
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database = uri.database.split("/")[0]
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if selected_schema:
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selected_schema = parse.quote(selected_schema, safe="")
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uri.database = database + "/" + selected_schema
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@classmethod
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def epoch_to_dttm(cls) -> str:
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return "DATEADD(S, {col}, '1970-01-01')"
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@classmethod
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def epoch_ms_to_dttm(cls) -> str:
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return "DATEADD(MS, {col}, '1970-01-01')"
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@classmethod
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def convert_dttm(cls, target_type: str, dttm: datetime) -> Optional[str]:
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tt = target_type.upper()
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if tt == utils.TemporalType.DATE:
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return f"TO_DATE('{dttm.date().isoformat()}')"
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if tt == utils.TemporalType.DATETIME:
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return f"""CAST('{dttm.isoformat(timespec="microseconds")}' AS DATETIME)"""
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if tt == utils.TemporalType.TIMESTAMP:
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return f"""TO_TIMESTAMP('{dttm.isoformat(timespec="microseconds")}')"""
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return None
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@staticmethod
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def mutate_db_for_connection_test(database: "Database") -> None:
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"""
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By default, snowflake doesn't validate if the user/role has access to the chosen
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database.
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:param database: instance to be mutated
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"""
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extra = json.loads(database.extra or "{}")
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engine_params = extra.get("engine_params", {})
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connect_args = engine_params.get("connect_args", {})
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connect_args["validate_default_parameters"] = True
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engine_params["connect_args"] = connect_args
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extra["engine_params"] = engine_params
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database.extra = json.dumps(extra)
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