Report notification successor from target action

plugins/postgresql/plugin.py

@@ -494,9 +494,23 @@ def notify_target(config, runtime_state, request_parameters):
     operation = notification.get("operation")
 
     if operation == "demote":
-        target_node = notification.get("demote_uname", "").strip().lower()
+        target_node = notification.get(
+            "demote_uname",
+            "",
+        ).strip().lower()
+        successor_node = notification.get(
+            "promote_uname",
+            "",
+        ).strip().lower()
     elif operation == "promote":
-        target_node = notification.get("promote_uname", "").strip().lower()
+        target_node = notification.get(
+            "promote_uname",
+            "",
+        ).strip().lower()
+        successor_node = notification.get(
+            "demote_uname",
+            "",
+        ).strip().lower()
     else:
         return {
             "ocf_rc": 1,
@@ -511,6 +525,7 @@ def notify_target(config, runtime_state, request_parameters):
         "target": target_node == node_name,
         "operation": operation,
         "target_node": target_node,
+        "successor_node": successor_node,
         "node": node_name,
         "age_seconds": age,
     }

tests/test-notify-target.py

@@ -50,6 +50,14 @@ runtime_state = {
 result = plugin.notify_target(config, runtime_state, {})
 require(result["ocf_rc"] == 0, "fresh target query failed")
 require(result["target"] is True, "local demote target was not detected")
+require(
+    result["target_node"] == "david-macbookpro",
+    "local target node was incorrect",
+)
+require(
+    result["successor_node"] == "david-prodesk",
+    "successor node was not reported",
+)
 print("matching_target         accepted")
 
 config["PACEMAKER_NODE_NAME"] = "david-eve"