fix(ingest/redshift):fixing schema filter (#8119)

metadata-ingestion/src/datahub/ingestion/source/redshift/config.py

@@ -1,3 +1,4 @@
+import logging
 from enum import Enum
 from typing import Any, Dict, List, Optional
 
@@ -5,6 +6,7 @@ from pydantic import root_validator
 from pydantic.fields import Field
 
 from datahub.configuration import ConfigModel
+from datahub.configuration.common import AllowDenyPattern
 from datahub.configuration.pydantic_field_deprecation import pydantic_field_deprecated
 from datahub.configuration.source_common import DatasetLineageProviderConfigBase
 from datahub.ingestion.source.data_lake_common.path_spec import PathSpec
@@ -16,6 +18,8 @@ from datahub.ingestion.source.state.stateful_ingestion_base import (
 )
 from datahub.ingestion.source.usage.usage_common import BaseUsageConfig
 
+logger = logging.Logger(__name__)
+
 
 # The lineage modes are documented in the Redshift source's docstring.
 class LineageMode(Enum):
@@ -123,6 +127,11 @@ class RedshiftConfig(
     )
     extra_client_options: Dict[str, Any] = {}
 
+    match_fully_qualified_names: bool = Field(
+        default=False,
+        description="Whether `schema_pattern` is matched against fully qualified schema name `<database>.<schema>`.",
+    )
+
     @root_validator(pre=True)
     def check_email_is_set_on_usage(cls, values):
         if values.get("include_usage_statistics"):
@@ -137,3 +146,22 @@ class RedshiftConfig(
             "database_alias"
         ), "either database or database_alias must be set"
         return values
+
+    @root_validator(pre=False)
+    def backward_compatibility_configs_set(cls, values: Dict) -> Dict:
+        match_fully_qualified_names = values.get("match_fully_qualified_names")
+
+        schema_pattern: Optional[AllowDenyPattern] = values.get("schema_pattern")
+
+        if (
+            schema_pattern is not None
+            and schema_pattern != AllowDenyPattern.allow_all()
+            and match_fully_qualified_names is not None
+            and not match_fully_qualified_names
+        ):
+            logger.warning(
+                "Please update `schema_pattern` to match against fully qualified schema name `<database_name>.<schema_name>` and set config `match_fully_qualified_names : True`."
+                "Current default `match_fully_qualified_names: False` is only to maintain backward compatibility. "
+                "The config option `match_fully_qualified_names` will be deprecated in future and the default behavior will assume `match_fully_qualified_names: True`."
+            )
+        return values

metadata-ingestion/src/datahub/ingestion/source/redshift/redshift.py

@@ -9,6 +9,7 @@ import psycopg2  # noqa: F401
 import pydantic
 import redshift_connector
 
+from datahub.configuration.pattern_utils import is_schema_allowed
 from datahub.emitter.mce_builder import (
     make_data_platform_urn,
     make_dataset_urn_with_platform_instance,
@@ -416,10 +417,17 @@ class RedshiftSource(StatefulIngestionSourceBase, TestableSource):
         for schema in RedshiftDataDictionary.get_schemas(
             conn=connection, database=database
         ):
-            logger.info(f"Processing schema: {database}.{schema.name}")
+            if not is_schema_allowed(
-            if not self.config.schema_pattern.allowed(schema.name):
+                self.config.schema_pattern,
+                schema.name,
+                database,
+                self.config.match_fully_qualified_names,
+            ):
                 self.report.report_dropped(f"{database}.{schema.name}")
                 continue
+
+            logger.info(f"Processing schema: {database}.{schema.name}")
+
             self.db_schemas[database][schema.name] = schema
             yield from self.process_schema(connection, database, schema)
 
@@ -756,10 +764,17 @@ class RedshiftSource(StatefulIngestionSourceBase, TestableSource):
     def cache_tables_and_views(self, connection, database):
         tables, views = RedshiftDataDictionary.get_tables_and_views(conn=connection)
         for schema in tables:
-            if self.config.schema_pattern.allowed(f"{database}.{schema}"):
+            if not is_schema_allowed(
-                logging.debug(
+                self.config.schema_pattern,
-                    f"Not caching tables for schema {database}.{schema} which is not allowed by schema_pattern"
+                schema,
+                database,
+                self.config.match_fully_qualified_names,
+            ):
+                logger.debug(
+                    f"Not caching table for schema {database}.{schema} which is not allowed by schema_pattern"
                 )
+                continue
+
             self.db_tables[database][schema] = []
             for table in tables[schema]:
                 if self.config.table_pattern.allowed(
@@ -770,29 +785,34 @@ class RedshiftSource(StatefulIngestionSourceBase, TestableSource):
                         self.report.table_cached.get(f"{database}.{schema}", 0) + 1
                     )
                 else:
-                        logging.debug(
+                    logger.debug(
                         f"Table {database}.{schema}.{table.name} is filtered by table_pattern"
                     )
                     self.report.table_filtered[f"{database}.{schema}"] = (
-                            self.report.table_filtered.get(f"{database}.{schema}", 0)
+                        self.report.table_filtered.get(f"{database}.{schema}", 0) + 1
-                            + 1
                     )
+
         for schema in views:
-            logging.debug(
+            if not is_schema_allowed(
+                self.config.schema_pattern,
+                schema,
+                database,
+                self.config.match_fully_qualified_names,
+            ):
+                logger.debug(
                     f"Not caching views for schema {database}.{schema} which is not allowed by schema_pattern"
                 )
-            if self.config.schema_pattern.allowed(f"{database}.{schema}"):
+                continue
+
             self.db_views[database][schema] = []
             for view in views[schema]:
-                    if self.config.view_pattern.allowed(
+                if self.config.view_pattern.allowed(f"{database}.{schema}.{view.name}"):
-                        f"{database}.{schema}.{view.name}"
-                    ):
                     self.db_views[database][schema].append(view)
                     self.report.view_cached[f"{database}.{schema}"] = (
                         self.report.view_cached.get(f"{database}.{schema}", 0) + 1
                     )
                 else:
-                        logging.debug(
+                    logger.debug(
                         f"View {database}.{schema}.{table.name} is filtered by view_pattern"
                     )
                     self.report.view_filtered[f"{database}.{schema}"] = (

metadata-ingestion/src/datahub/ingestion/source/redshift/redshift_schema.py

@@ -242,9 +242,11 @@ class RedshiftDataDictionary:
                     )
                 )
         for schema_key, schema_tables in tables.items():
-            logger.info(f"In schema: {schema_key} discovered {len(tables)} tables")
+            logger.info(
+                f"In schema: {schema_key} discovered {len(schema_tables)} tables"
+            )
         for schema_key, schema_views in views.items():
-            logger.info(f"In schema: {schema_key} discovered {len(views)} views")
+            logger.info(f"In schema: {schema_key} discovered {len(schema_views)} views")
 
         return tables, views