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fadefff3e1
* Fix databricks timeout issue * Change based on comments * Change timeOut word to connectionTimeout
97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
# Copyright 2021 Collate
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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Source connection handler
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"""
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from functools import partial
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from sqlalchemy.engine import Engine
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from sqlalchemy.inspection import inspect
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from metadata.generated.schema.entity.services.connections.database.databricksConnection import (
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DatabricksConnection,
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)
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from metadata.ingestion.connections.builders import (
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create_generic_db_connection,
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get_connection_args_common,
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init_empty_connection_arguments,
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)
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from metadata.ingestion.connections.test_connections import (
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TestConnectionResult,
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TestConnectionStep,
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test_connection_db_common,
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)
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def get_connection_url(connection: DatabricksConnection) -> str:
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url = f"{connection.scheme.value}://token:{connection.token.get_secret_value()}@{connection.hostPort}"
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return url
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def get_connection(connection: DatabricksConnection) -> Engine:
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"""
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Create connection
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"""
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if connection.httpPath:
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if not connection.connectionArguments:
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connection.connectionArguments = init_empty_connection_arguments()
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connection.connectionArguments.__root__["http_path"] = connection.httpPath
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return create_generic_db_connection(
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connection=connection,
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get_connection_url_fn=get_connection_url,
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get_connection_args_fn=get_connection_args_common,
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)
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def test_connection(engine: Engine, service_connection) -> TestConnectionResult:
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"""
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Test connection
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"""
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def custom_executor(engine, statement):
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cursor = engine.execute(statement)
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return [item[0] for item in list(cursor.all())]
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inspector = inspect(engine)
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steps = [
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TestConnectionStep(
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function=partial(
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custom_executor,
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statement="SHOW CATALOGS",
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engine=engine,
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),
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name="Get Catalogs",
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),
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TestConnectionStep(
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function=partial(
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custom_executor,
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statement="SHOW SCHEMAS",
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engine=engine,
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),
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name="Get Schemas",
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),
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TestConnectionStep(
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function=inspector.get_table_names,
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name="Get Tables",
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),
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TestConnectionStep(
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function=inspector.get_view_names,
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name="Get Views",
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mandatory=False,
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),
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]
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timeout_seconds = service_connection.connectionTimeout
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return test_connection_db_common(engine, steps, timeout_seconds)
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