MINOR Fix snowflake profiler by using case-insensitive strings (#18438)

* use snowflake system metrics computer instead of source

* reverted pylint

* use case-insensitive strings equality for snowflake filters

ingestion/src/metadata/ingestion/source/database/snowflake/profiler/profiler.py

@@ -13,15 +13,14 @@
 Profiler for Snowflake
 """
 from metadata.ingestion.source.database.snowflake.profiler.system import (
-    SnowflakeSystemMetricsSource,
+    SnowflakeSystemMetricsComputer,
 )
 from metadata.profiler.interface.sqlalchemy.snowflake.profiler_interface import (
     SnowflakeProfilerInterface,
 )
+from metadata.profiler.metrics.system.system import SystemMetricsComputer
 
 
 class SnowflakeProfiler(SnowflakeProfilerInterface):
-    def initialize_system_metrics_computer(
-        self, **kwargs
-    ) -> SnowflakeSystemMetricsSource:
-        return SnowflakeSystemMetricsSource(session=self.session)
+    def initialize_system_metrics_computer(self, **kwargs) -> SystemMetricsComputer:
+        return SnowflakeSystemMetricsComputer(session=self.session)

ingestion/src/metadata/ingestion/source/database/snowflake/profiler/system.py

@@ -17,7 +17,9 @@ from metadata.profiler.metrics.system.system import (
     CacheProvider,
     EmptySystemMetricsSource,
     SQASessionProvider,
+    SystemMetricsComputer,
 )
+from metadata.utils.collections import CaseInsensitiveString
 from metadata.utils.logger import profiler_logger
 from metadata.utils.lru_cache import LRU_CACHE_SIZE, LRUCache
 from metadata.utils.profiler_utils import get_identifiers_from_string
@@ -222,7 +224,7 @@ def get_snowflake_system_queries(
     """
 
     try:
-        logger.debug(f"Trying to parse query [{query_log_entry.query_id}]")
+        logger.debug(f"Parsing snowflake query [{query_log_entry.query_id}]")
         identifier = _parse_query(query_log_entry.query_text)
         if not identifier:
             raise RuntimeError("Could not identify the table from the query.")
@@ -358,9 +360,17 @@ class SnowflakeSystemMetricsSource(
                 }
                 for q in query_results
                 if getattr(q, rows_affected_field) > 0
-                and q.database_name == db
-                and q.schema_name == schema
-                and q.table_name == table
+                # snowflake SQL identifiers are case insensitive. All identifiers are stored in upper case.
+                and (
+                    CaseInsensitiveString(db),
+                    CaseInsensitiveString(schema),
+                    CaseInsensitiveString(table),
+                )
+                == (
+                    q.database_name,
+                    q.schema_name,
+                    q.table_name,
+                )
             ]
         )
 
@@ -387,3 +397,9 @@ class SnowflakeSystemMetricsSource(
             for row in queries
         ]
         return [result for result in results if result is not None]
+
+
+class SnowflakeSystemMetricsComputer(
+    SystemMetricsComputer, SnowflakeSystemMetricsSource
+):
+    pass