SNOW-698806: add usage telemetry information (#362)

DESCRIPTION.md

@@ -9,6 +9,10 @@ Source code is also available at:
 
 # Release Notes
 
+- v1.4.5(Dec 7, 2022)
+
+  - Updated the application name of driver connection `SnowflakeConnection` to `SnowflakeSQLAlchemy`.
+
 - v1.4.4(Nov 16, 2022)
 
   - Fixed a bug that percent signs in a non-compiled statement should not be interpolated with emtpy sequence when executed.

setup.cfg

@@ -3,7 +3,7 @@ universal = 1
 
 [metadata]
 name = snowflake-sqlalchemy
-version = 1.4.4
+version = 1.4.5
 description = Snowflake SQLAlchemy Dialect
 long_description = file: DESCRIPTION.md
 long_description_content_type = text/markdown

src/snowflake/sqlalchemy/_constants.py

@@ -0,0 +1,14 @@
+#
+# Copyright (c) 2012-2022 Snowflake Computing Inc. All rights reserved.
+#
+import pkg_resources
+
+# parameters needed for usage tracking
+PARAM_APPLICATION = "application"
+PARAM_INTERNAL_APPLICATION_NAME = "internal_application_name"
+PARAM_INTERNAL_APPLICATION_VERSION = "internal_application_version"
+
+APPLICATION_NAME = "SnowflakeSQLAlchemy"
+SNOWFLAKE_SQLALCHEMY_VERSION = pkg_resources.get_distribution(
+    "snowflake-sqlalchemy"
+).version

src/snowflake/sqlalchemy/snowdialect.py

@@ -61,6 +61,7 @@
     _CUSTOM_Float,
     _CUSTOM_Time,
 )
+from .util import _update_connection_application_name
 
 colspecs = {
     Date: _CUSTOM_Date,
@@ -834,6 +835,12 @@ def get_table_comment(self, connection, table_name, schema=None, **kw):
             else None
         }
 
+    def connect(self, *cargs, **cparams):
+        snowflake_conn = super().connect(
+            *cargs, **_update_connection_application_name(**cparams)
+        )
+        return snowflake_conn
+
 
 @sa_vnt.listens_for(Table, "before_create")
 def check_table(table, connection, _ddl_runner, **kw):

src/snowflake/sqlalchemy/util.py

@@ -3,13 +3,22 @@
 #
 
 import re
+from typing import Any
 from urllib.parse import quote_plus
 
 from sqlalchemy import exc
 
 from snowflake.connector.compat import IS_STR
 from snowflake.connector.connection import SnowflakeConnection
 
+from ._constants import (
+    APPLICATION_NAME,
+    PARAM_APPLICATION,
+    PARAM_INTERNAL_APPLICATION_NAME,
+    PARAM_INTERNAL_APPLICATION_VERSION,
+    SNOWFLAKE_SQLALCHEMY_VERSION,
+)
+
 
 def _rfc_1738_quote(text):
     return re.sub(r"[:@/]", lambda m: "%%%X" % ord(m.group(0)), text)
@@ -85,3 +94,13 @@ def _set_connection_interpolate_empty_sequences(
     else:
         # _dbapi_connection is a raw SnowflakeConnection
         dbapi_connection._interpolate_empty_sequences = flag
+
+
+def _update_connection_application_name(**conn_kwargs: Any) -> Any:
+    if PARAM_APPLICATION not in conn_kwargs:
+        conn_kwargs[PARAM_APPLICATION] = APPLICATION_NAME
+    if PARAM_INTERNAL_APPLICATION_NAME not in conn_kwargs:
+        conn_kwargs[PARAM_INTERNAL_APPLICATION_NAME] = APPLICATION_NAME
+    if PARAM_INTERNAL_APPLICATION_VERSION not in conn_kwargs:
+        conn_kwargs[PARAM_INTERNAL_APPLICATION_VERSION] = SNOWFLAKE_SQLALCHEMY_VERSION
+    return conn_kwargs

tests/test_core.py

@@ -38,6 +38,10 @@
 
 from snowflake.connector import Error, ProgrammingError, connect
 from snowflake.sqlalchemy import URL, MergeInto, dialect
+from snowflake.sqlalchemy._constants import (
+    APPLICATION_NAME,
+    SNOWFLAKE_SQLALCHEMY_VERSION,
+)
 from snowflake.sqlalchemy.snowdialect import SnowflakeDialect
 
 from .conftest import create_engine_with_future_flag as create_engine
@@ -98,6 +102,15 @@ def _create_users_addresses_tables_without_sequence(engine_testaccount, metadata
 def verify_engine_connection(engine):
     with engine.connect() as conn:
         results = conn.execute(text("select current_version()")).fetchone()
+        assert conn.connection.driver_connection.application == APPLICATION_NAME
+        assert (
+            conn.connection.driver_connection._internal_application_name
+            == APPLICATION_NAME
+        )
+        assert (
+            conn.connection.driver_connection._internal_application_version
+            == SNOWFLAKE_SQLALCHEMY_VERSION
+        )
         assert results is not None