feat(cli): add sibling helper CLI command (#9744)

metadata-ingestion/src/datahub/cli/specific/dataset_cli.py

@@ -1,12 +1,15 @@
 import json
 import logging
 from pathlib import Path
+from typing import Set, Tuple
 
 import click
 from click_default_group import DefaultGroup
 
 from datahub.api.entities.dataset.dataset import Dataset
-from datahub.ingestion.graph.client import get_default_graph
+from datahub.emitter.mcp import MetadataChangeProposalWrapper
+from datahub.ingestion.graph.client import DataHubGraph, get_default_graph
+from datahub.metadata.com.linkedin.pegasus2avro.common import Siblings
 from datahub.telemetry import telemetry
 from datahub.upgrade import upgrade
 
@@ -65,3 +68,38 @@ def get(urn: str, to_file: str) -> None:
                 click.secho(f"Dataset yaml written to {to_file}", fg="green")
         else:
             click.secho(f"Dataset {urn} does not exist")
+
+
+@dataset.command()
+@click.option("--urn", required=True, type=str, help="URN of primary sibling")
+@click.option(
+    "--sibling-urns",
+    required=True,
+    type=str,
+    help="URN of secondary sibling(s)",
+    multiple=True,
+)
+@telemetry.with_telemetry()
+def add_sibling(urn: str, sibling_urns: Tuple[str]) -> None:
+    all_urns = set()
+    all_urns.add(urn)
+    for sibling_urn in sibling_urns:
+        all_urns.add(sibling_urn)
+    with get_default_graph() as graph:
+        for _urn in all_urns:
+            _emit_sibling(graph, urn, _urn, all_urns)
+
+
+def _emit_sibling(
+    graph: DataHubGraph, primary_urn: str, urn: str, all_urns: Set[str]
+) -> None:
+    siblings = []
+    for sibling_urn in all_urns:
+        if sibling_urn != urn:
+            siblings.append(sibling_urn)
+    graph.emit(
+        MetadataChangeProposalWrapper(
+            entityUrn=urn,
+            aspect=Siblings(primary=primary_urn == urn, siblings=sorted(siblings)),
+        )
+    )