fix(ingest): snowflake - fix missing snowflake lineage when table_pattern is set (#6410)

metadata-ingestion/src/datahub/ingestion/source/snowflake/snowflake_lineage.py

@@ -95,7 +95,12 @@ class SnowflakeUpstreamTable:
     downstreamColumns: List[SnowflakeColumnWithLineage]
 
     @classmethod
-    def from_dict(cls, dataset, upstreams_columns_json, downstream_columns_json):
+    def from_dict(
+        cls,
+        dataset: str,
+        upstreams_columns_json: Optional[str],
+        downstream_columns_json: Optional[str],
+    ) -> "SnowflakeUpstreamTable":
         try:
             upstreams_columns_list = []
             downstream_columns_list = []

metadata-ingestion/src/datahub/ingestion/source/snowflake/snowflake_utils.py

@@ -13,6 +13,8 @@ from datahub.metadata.com.linkedin.pegasus2avro.events.metadata import ChangeTyp
 from datahub.metadata.schema_classes import _Aspect
 
 
+# Required only for mypy, since we are using mixin classes, and not inheritance.
+# Reference - https://mypy.readthedocs.io/en/latest/more_types.html#mixin-classes
 class SnowflakeLoggingProtocol(Protocol):
     @property
     def logger(self) -> logging.Logger:
@@ -37,6 +39,9 @@ class SnowflakeCommonProtocol(Protocol):
     ) -> str:
         ...
 
+    def get_dataset_identifier_from_qualified_name(self, qualified_name: str) -> str:
+        ...
+
     def snowflake_identifier(self, identifier: str) -> str:
         ...
 
@@ -76,14 +81,16 @@ class SnowflakeCommonMixin:
             return False
 
         if dataset_type.lower() in {"table"} and not self.config.table_pattern.allowed(
-            dataset_params[2].strip('"')
+            self.get_dataset_identifier_from_qualified_name(dataset_name)
         ):
             return False
 
         if dataset_type.lower() in {
             "view",
             "materialized_view",
-        } and not self.config.view_pattern.allowed(dataset_params[2].strip('"')):
+        } and not self.config.view_pattern.allowed(
+            self.get_dataset_identifier_from_qualified_name(dataset_name)
+        ):
             return False
 
         return True

metadata-ingestion/tests/integration/snowflake-beta/test_snowflake_beta.py

@@ -4,7 +4,7 @@ from unittest import mock
 
 from freezegun import freeze_time
 
-from datahub.configuration.common import DynamicTypedConfig
+from datahub.configuration.common import AllowDenyPattern, DynamicTypedConfig
 from datahub.ingestion.run.pipeline import Pipeline
 from datahub.ingestion.run.pipeline_config import PipelineConfig, SourceConfig
 from datahub.ingestion.source.snowflake import snowflake_query
@@ -297,6 +297,7 @@ def test_snowflake_basic(pytestconfig, tmp_path, mock_time, mock_datahub_graph):
                         username="TST_USR",
                         password="TST_PWD",
                         include_views=False,
+                        table_pattern=AllowDenyPattern(allow=["test_db.test_schema.*"]),
                         include_technical_schema=True,
                         include_table_lineage=True,
                         include_view_lineage=False,