[PECO-1803] Splitting the PySql connector into the core and the non core part (#417)

* Implemented ColumnQueue to test the fetchall without pyarrow

Removed token

removed token

* order of fields in row corrected

* Changed the folder structure and tested the basic setup to work

* Refractored the code to make connector to work

* Basic Setup of connector, core and sqlalchemy is working

* Basic integration of core, connect and sqlalchemy is working

* Setup working dynamic change from ColumnQueue to ArrowQueue

* Refractored the test code and moved to respective folders

* Added the unit test for column_queue

Fixed __version__

Fix

* venv_main added to git ignore

* Added code for merging columnar table

* Merging code for columnar

* Fixed the retry_close sesssion test issue with logging

* Fixed the databricks_sqlalchemy tests and introduced pytest.ini for the sqla_testing

* Added pyarrow_test mark on pytest

* Fixed databricks.sqlalchemy to databricks_sqlalchemy imports

* Added poetry.lock

* Added dist folder

* Changed the pyproject.toml

* Minor Fix

* Added the pyarrow skip tag on unit tests and tested their working

* Fixed the Decimal and timestamp conversion issue in non arrow pipeline

* Removed not required files and reformatted

* Fixed test_retry error

* Changed the folder structure to src / databricks

* Removed the columnar non arrow flow to another PR

* Moved the README to the root

* removed columnQueue instance

* Revmoved databricks_sqlalchemy dependency in core

* Changed the pysql_supports_arrow predicate, introduced changes in the pyproject.toml

* Ran the black formatter with the original version

* Extra .py removed from all the __init__.py files names

* Undo formatting check

* Check

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* BIG UPDATE

* Refeactor code

* Refractor

* Fixed versioning

* Minor refractoring

* Minor refractoring

Author: jprakash-db

src/databricks/sql/auth/__init__.py …tor/databricks_sql_connector/__init__.pysrc/databricks/sql/auth/__init__.py renamed to databricks_sql_connector/databricks_sql_connector/__init__.py src/databricks/sql/auth/__init__.py renamed to databricks_sql_connector/databricks_sql_connector/__init__.py

@@ -0,0 +1,23 @@
+[tool.poetry]
+name = "databricks-sql-connector"
+version = "3.5.0"
+description = "Databricks SQL Connector for Python"
+authors = ["Databricks <databricks-sql-connector-maintainers@databricks.com>"]
+license = "Apache-2.0"
+
+
+[tool.poetry.dependencies]
+databricks_sql_connector_core = { version = ">=1.0.0", extras=["all"]}
+databricks_sqlalchemy = { version = ">=1.0.0", optional = true }
+
+[tool.poetry.extras]
+databricks_sqlalchemy = ["databricks_sqlalchemy"]
+
+[tool.poetry.urls]
+"Homepage" = "https://github.com/databricks/databricks-sql-python"
+"Bug Tracker" = "https://github.com/databricks/databricks-sql-python/issues"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
+

databricks_sql_connector/pyproject.toml

@@ -1,36 +1,26 @@
 [tool.poetry]
-name = "databricks-sql-connector"
-version = "3.3.0"
-description = "Databricks SQL Connector for Python"
+name = "databricks-sql-connector-core"
+version = "1.0.0"
+description = "Databricks SQL Connector core for Python"
 authors = ["Databricks <databricks-sql-connector-maintainers@databricks.com>"]
-license = "Apache-2.0"
-readme = "README.md"
 packages = [{ include = "databricks", from = "src" }]
-include = ["CHANGELOG.md"]
 
 [tool.poetry.dependencies]
 python = "^3.8.0"
 thrift = ">=0.16.0,<0.21.0"
 pandas = [
     { version = ">=1.2.5,<2.3.0", python = ">=3.8" }
 ]
-pyarrow = ">=14.0.1,<17"
-
 lz4 = "^4.0.2"
 requests = "^2.18.1"
 oauthlib = "^3.1.0"
-numpy = [
-    { version = "^1.16.6", python = ">=3.8,<3.11" },
-    { version = "^1.23.4", python = ">=3.11" },
-]
-sqlalchemy = { version = ">=2.0.21", optional = true }
 openpyxl = "^3.0.10"
 alembic = { version = "^1.0.11", optional = true }
 urllib3 = ">=1.26"
+pyarrow = {version = ">=14.0.1,<17", optional = true}
 
 [tool.poetry.extras]
-sqlalchemy = ["sqlalchemy"]
-alembic = ["sqlalchemy", "alembic"]
+pyarrow = ["pyarrow"]
 
 [tool.poetry.dev-dependencies]
 pytest = "^7.1.2"
@@ -43,8 +33,6 @@ pytest-dotenv = "^0.5.2"
 "Homepage" = "https://github.com/databricks/databricks-sql-python"
 "Bug Tracker" = "https://github.com/databricks/databricks-sql-python/issues"
 
-[tool.poetry.plugins."sqlalchemy.dialects"]
-"databricks" = "databricks.sqlalchemy:DatabricksDialect"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
@@ -62,5 +50,5 @@ markers = {"reviewed" = "Test case has been reviewed by Databricks"}
 minversion = "6.0"
 log_cli = "false"
 log_cli_level = "INFO"
-testpaths = ["tests", "src/databricks/sqlalchemy/test_local"]
+testpaths = ["tests", "databricks_sql_connector_core/tests"]
 env_files = ["test.env"]