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feat: Add Apache Doris support (apache#24714)
Co-authored-by: Evan Rusackas <evan@preset.io>
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,26 @@ | ||
| --- | ||
| title: Apache Doris | ||
| hide_title: true | ||
| sidebar_position: 5 | ||
| version: 1 | ||
| --- | ||
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| ## Doris | ||
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| The [sqlalchemy-doris](https://pypi.org/project/pydoris/) library is the recommended way to connect to Apache Doris through SQLAlchemy. | ||
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| You'll need the following setting values to form the connection string: | ||
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| - **User**: User Name | ||
| - **Password**: Password | ||
| - **Host**: Doris FE Host | ||
| - **Port**: Doris FE port | ||
| - **Catalog**: Catalog Name | ||
| - **Database**: Database Name | ||
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| Here's what the connection string looks like: | ||
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| ``` | ||
| doris://<User>:<Password>@<Host>:<Port>/<Catalog>.<Database> | ||
| ``` |
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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 logging | ||
| import re | ||
| from re import Pattern | ||
| from typing import Any, Optional | ||
| from urllib import parse | ||
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| from flask_babel import gettext as __ | ||
| from sqlalchemy import Float, Integer, Numeric, String, TEXT, types | ||
| from sqlalchemy.engine.url import URL | ||
| from sqlalchemy.sql.type_api import TypeEngine | ||
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| from superset.db_engine_specs.mysql import MySQLEngineSpec | ||
| from superset.errors import SupersetErrorType | ||
| from superset.utils.core import GenericDataType | ||
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| # Regular expressions to catch custom errors | ||
| CONNECTION_ACCESS_DENIED_REGEX = re.compile( | ||
| "Access denied for user '(?P<username>.*?)'" | ||
| ) | ||
| CONNECTION_INVALID_HOSTNAME_REGEX = re.compile( | ||
| "Unknown Doris server host '(?P<hostname>.*?)'" | ||
| ) | ||
| CONNECTION_UNKNOWN_DATABASE_REGEX = re.compile("Unknown database '(?P<database>.*?)'") | ||
| CONNECTION_HOST_DOWN_REGEX = re.compile( | ||
| "Can't connect to Doris server on '(?P<hostname>.*?)'" | ||
| ) | ||
| SYNTAX_ERROR_REGEX = re.compile( | ||
| "check the manual that corresponds to your MySQL server " | ||
| "version for the right syntax to use near '(?P<server_error>.*)" | ||
| ) | ||
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| logger = logging.getLogger(__name__) | ||
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| class TINYINT(Integer): | ||
| __visit_name__ = "TINYINT" | ||
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| class LARGEINT(Integer): | ||
| __visit_name__ = "LARGEINT" | ||
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| class DOUBLE(Float): | ||
| __visit_name__ = "DOUBLE" | ||
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| class HLL(Numeric): | ||
| __visit_name__ = "HLL" | ||
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| class BITMAP(Numeric): | ||
| __visit_name__ = "BITMAP" | ||
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| class QuantileState(Numeric): | ||
| __visit_name__ = "QUANTILE_STATE" | ||
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| class AggState(Numeric): | ||
| __visit_name__ = "AGG_STATE" | ||
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| class ARRAY(TypeEngine): | ||
| __visit_name__ = "ARRAY" | ||
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| @property | ||
| def python_type(self) -> Optional[type[list[Any]]]: | ||
| return list | ||
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| class MAP(TypeEngine): | ||
| __visit_name__ = "MAP" | ||
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| @property | ||
| def python_type(self) -> Optional[type[dict[Any, Any]]]: | ||
| return dict | ||
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| class STRUCT(TypeEngine): | ||
| __visit_name__ = "STRUCT" | ||
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| @property | ||
| def python_type(self) -> Optional[type[Any]]: | ||
| return None | ||
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| class DorisEngineSpec(MySQLEngineSpec): | ||
| engine = "pydoris" | ||
| engine_aliases = {"doris"} | ||
| engine_name = "Apache Doris" | ||
| max_column_name_length = 64 | ||
| default_driver = "pydoris" | ||
| sqlalchemy_uri_placeholder = ( | ||
| "doris://user:password@host:port/catalog.db[?key=value&key=value...]" | ||
| ) | ||
| encryption_parameters = {"ssl": "0"} | ||
| supports_dynamic_schema = True | ||
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| column_type_mappings = ( # type: ignore | ||
| ( | ||
| re.compile(r"^tinyint", re.IGNORECASE), | ||
| TINYINT(), | ||
| GenericDataType.NUMERIC, | ||
| ), | ||
| ( | ||
| re.compile(r"^largeint", re.IGNORECASE), | ||
| LARGEINT(), | ||
| GenericDataType.NUMERIC, | ||
| ), | ||
| ( | ||
| re.compile(r"^decimal.*", re.IGNORECASE), | ||
| types.DECIMAL(), | ||
| GenericDataType.NUMERIC, | ||
| ), | ||
| ( | ||
| re.compile(r"^double", re.IGNORECASE), | ||
| DOUBLE(), | ||
| GenericDataType.NUMERIC, | ||
| ), | ||
| ( | ||
| re.compile(r"^varchar(\((\d+)\))*$", re.IGNORECASE), | ||
| types.VARCHAR(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^char(\((\d+)\))*$", re.IGNORECASE), | ||
| types.CHAR(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^json.*", re.IGNORECASE), | ||
| types.JSON(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^binary.*", re.IGNORECASE), | ||
| types.BINARY(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^quantile_state", re.IGNORECASE), | ||
| QuantileState(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^agg_state.*", re.IGNORECASE), | ||
| AggState(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| (re.compile(r"^hll", re.IGNORECASE), HLL(), GenericDataType.STRING), | ||
| ( | ||
| re.compile(r"^bitmap", re.IGNORECASE), | ||
| BITMAP(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^array.*", re.IGNORECASE), | ||
| ARRAY(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^map.*", re.IGNORECASE), | ||
| MAP(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^struct.*", re.IGNORECASE), | ||
| STRUCT(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^datetime.*", re.IGNORECASE), | ||
| types.DATETIME(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^date.*", re.IGNORECASE), | ||
| types.DATE(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^text.*", re.IGNORECASE), | ||
| TEXT(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ( | ||
| re.compile(r"^string.*", re.IGNORECASE), | ||
| String(), | ||
| GenericDataType.STRING, | ||
| ), | ||
| ) | ||
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| custom_errors: dict[Pattern[str], tuple[str, SupersetErrorType, dict[str, Any]]] = { | ||
| CONNECTION_ACCESS_DENIED_REGEX: ( | ||
| __('Either the username "%(username)s" or the password is incorrect.'), | ||
| SupersetErrorType.CONNECTION_ACCESS_DENIED_ERROR, | ||
| {"invalid": ["username", "password"]}, | ||
| ), | ||
| CONNECTION_INVALID_HOSTNAME_REGEX: ( | ||
| __('Unknown Doris server host "%(hostname)s".'), | ||
| SupersetErrorType.CONNECTION_INVALID_HOSTNAME_ERROR, | ||
| {"invalid": ["host"]}, | ||
| ), | ||
| CONNECTION_HOST_DOWN_REGEX: ( | ||
| __('The host "%(hostname)s" might be down and can\'t be reached.'), | ||
| SupersetErrorType.CONNECTION_HOST_DOWN_ERROR, | ||
| {"invalid": ["host", "port"]}, | ||
| ), | ||
| CONNECTION_UNKNOWN_DATABASE_REGEX: ( | ||
| __('Unable to connect to database "%(database)s".'), | ||
| SupersetErrorType.CONNECTION_UNKNOWN_DATABASE_ERROR, | ||
| {"invalid": ["database"]}, | ||
| ), | ||
| SYNTAX_ERROR_REGEX: ( | ||
| __( | ||
| 'Please check your query for syntax errors near "%(server_error)s". ' | ||
| "Then, try running your query again." | ||
| ), | ||
| SupersetErrorType.SYNTAX_ERROR, | ||
| {}, | ||
| ), | ||
| } | ||
|
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| @classmethod | ||
| def adjust_engine_params( | ||
| cls, | ||
| uri: URL, | ||
| connect_args: dict[str, Any], | ||
| catalog: Optional[str] = None, | ||
| schema: Optional[str] = None, | ||
| ) -> tuple[URL, dict[str, Any]]: | ||
| database = uri.database | ||
| if schema and database: | ||
| schema = parse.quote(schema, safe="") | ||
| if "." in database: | ||
| database = database.split(".")[0] + "." + schema | ||
| else: | ||
| database = "internal." + schema | ||
| uri = uri.set(database=database) | ||
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| return uri, connect_args | ||
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| @classmethod | ||
| def get_schema_from_engine_params( | ||
| cls, | ||
| sqlalchemy_uri: URL, | ||
| connect_args: dict[str, Any], | ||
| ) -> Optional[str]: | ||
| """ | ||
| Return the configured schema. | ||
| For doris the SQLAlchemy URI looks like this: | ||
| doris://localhost:9030/catalog.database | ||
| """ | ||
| database = sqlalchemy_uri.database.strip("/") | ||
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| if "." not in database: | ||
| return None | ||
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| return parse.unquote(database.split(".")[1]) |
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