fix(ingest): drop redshift-legacy and redshift-usage-legacy sources

docs/how/updating-datahub.md

@@ -6,6 +6,8 @@ This file documents any backwards-incompatible changes in DataHub and assists pe
 
 ### Breaking Changes
 
+- #9244: The `redshift-legacy` and `redshift-legacy-usage` sources, which have been deprecated for >6 months, have been removed. The new `redshift` source is a superset of the functionality provided by those legacy sources.
+
 ### Potential Downtime
 
 ### Deprecations

metadata-ingestion/setup.py

@@ -366,8 +366,6 @@
     | usage_common
     | {"redshift-connector"}
     | sqlglot_lib,
-    "redshift-legacy": sql_common | redshift_common | sqlglot_lib,
-    "redshift-usage-legacy": sql_common | redshift_common | sqlglot_lib | usage_common,
     "s3": {*s3_base, *data_lake_profiling},
     "gcs": {*s3_base, *data_lake_profiling},
     "sagemaker": aws_common,
@@ -510,8 +508,6 @@
             "presto",
             "redash",
             "redshift",
-            "redshift-legacy",
-            "redshift-usage-legacy",
             "s3",
             "snowflake",
             "tableau",
@@ -608,8 +604,6 @@
         "postgres = datahub.ingestion.source.sql.postgres:PostgresSource",
         "redash = datahub.ingestion.source.redash:RedashSource",
         "redshift = datahub.ingestion.source.redshift.redshift:RedshiftSource",
-        "redshift-legacy = datahub.ingestion.source.sql.redshift:RedshiftSource",
-        "redshift-usage-legacy = datahub.ingestion.source.usage.redshift_usage:RedshiftUsageSource",
         "snowflake = datahub.ingestion.source.snowflake.snowflake_v2:SnowflakeV2Source",
         "superset = datahub.ingestion.source.superset:SupersetSource",
         "tableau = datahub.ingestion.source.tableau:TableauSource",

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

@@ -1,6 +1,6 @@
 from datetime import datetime
 
-from datahub.ingestion.source.sql.redshift import redshift_datetime_format
+redshift_datetime_format = "%Y-%m-%d %H:%M:%S"
 
 
 class RedshiftQuery:

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

@@ -1,22 +1,11 @@
-import warnings
-
-from datahub.configuration.common import ConfigurationWarning
 from datahub.ingestion.api.registry import PluginRegistry
 from datahub.ingestion.api.source import Source
 
 source_registry = PluginRegistry[Source]()
 source_registry.register_from_entrypoint("datahub.ingestion.source.plugins")
 
 # Deprecations.
-source_registry.register_alias(
-    "redshift-usage",
-    "redshift-usage-legacy",
-    lambda: warnings.warn(
-        "source type redshift-usage is deprecated, use redshift source instead as usage was merged into the main source",
-        ConfigurationWarning,
-        stacklevel=3,
-    ),
-)
+# source_registry.register_alias(<new_name>, <old_name>, <deprecation_message>)
 
 # The MSSQL source has two possible sets of dependencies. We alias
 # the second to the first so that we maintain the 1:1 mapping between