feat(airflow): add DatahubRestHook.make_graph method

metadata-ingestion-modules/airflow-plugin/src/datahub_airflow_plugin/example_dags/graph_usage_sample_dag.py

@@ -0,0 +1,35 @@
+"""This example DAG demonstrates how to create and use a DataHubGraph client."""
+
+from datetime import timedelta
+
+import pendulum
+from airflow.decorators import dag, task
+from datahub.ingestion.graph.client import DataHubGraph, RemovedStatusFilter
+
+from datahub_airflow_plugin.hooks.datahub import DatahubRestHook
+
+
+@dag(
+    schedule_interval=timedelta(days=1),
+    start_date=pendulum.datetime(2021, 1, 1, tz="UTC"),
+    catchup=False,
+)
+def datahub_graph_usage_sample_dag():
+    @task()
+    def use_the_graph():
+        graph: DataHubGraph = DatahubRestHook("my_datahub_rest_conn_id").make_graph()
+        graph.test_connection()
+
+        # Example usage: Find all soft-deleted BigQuery DEV entities
+        # in DataHub, and hard delete them.
+        for urn in graph.get_urns_by_filter(
+            platform="bigquery",
+            env="DEV",
+            status=RemovedStatusFilter.ONLY_SOFT_DELETED,
+        ):
+            graph.hard_delete_entity(urn)
+
+    use_the_graph()
+
+
+datahub_graph_usage_sample_dag()

metadata-ingestion-modules/airflow-plugin/src/datahub_airflow_plugin/hooks/datahub.py

@@ -14,6 +14,7 @@
     from datahub.emitter.kafka_emitter import DatahubKafkaEmitter
     from datahub.emitter.rest_emitter import DataHubRestEmitter
     from datahub.emitter.synchronized_file_emitter import SynchronizedFileEmitter
+    from datahub.ingestion.graph.client import DataHubGraph
     from datahub.ingestion.sink.datahub_kafka import KafkaSinkConfig
 
 
@@ -94,6 +95,9 @@ def make_emitter(self) -> "DataHubRestEmitter":
             host, token, **extra_args
         )
 
+    def make_graph(self) -> "DataHubGraph":
+        return self.make_emitter().to_graph()
+
     def emit(
         self,
         items: Sequence[