SOLR-9735: Fix v2 API for AutoscalingHistoryHandler.

solr/core/src/java/org/apache/solr/handler/admin/AutoscalingHistoryHandler.java

@@ -17,10 +17,13 @@
 package org.apache.solr.handler.admin;
 
 import java.lang.invoke.MethodHandles;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.Locale;
 import java.util.Map;
 
+import org.apache.solr.api.Api;
+import org.apache.solr.api.ApiBag;
 import org.apache.solr.client.solrj.impl.CloudSolrClient;
 import org.apache.solr.client.solrj.response.QueryResponse;
 import org.apache.solr.cloud.autoscaling.SystemLogListener;
@@ -146,4 +149,14 @@ public class AutoscalingHistoryHandler extends RequestHandlerBase implements Per
     return Category.ADMIN;
   }
 
+  @Override
+  public Boolean registerV2() {
+    return Boolean.TRUE;
+  }
+
+  @Override
+  public Collection<Api> getApis() {
+    return ApiBag.wrapRequestHandlers(this, "autoscaling.history");
+  }
+
 }

solr/solrj/src/resources/apispec/autoscaling.history.json

@@ -0,0 +1,61 @@
+{
+  "documentation": "https://lucene.apache.org/solr/guide/solrcloud-autoscaling-api.html",
+  "description": "Autoscaling history handler allows retrieving past autoscaling events recorded in the .system collection.",
+  "methods": [
+    "GET"
+  ],
+  "url": {
+    "paths": [
+      "/cluster/autoscaling/history"
+    ],
+    "params": {
+      "collection": {
+        "type": "string",
+        "description": "Collection where autoscaling events are stored, '.system' by default.",
+        "default": ".system"
+      },
+      "q": {
+        "type": "string",
+        "description": "Arbitrary query to limit the selected events.",
+        "default": "*:*"
+      },
+      "sort": {
+        "type": "string",
+        "description": "Sorting criteria for returned events.",
+        "default": "id asc"
+      },
+      "action": {
+        "type": "string",
+        "description": "Trigger action name to select"
+      },
+      "message": {
+        "type": "string",
+        "description": "Event message to select"
+      },
+      "trigger": {
+        "type": "string",
+        "description": "Trigger name to select"
+      },
+      "type": {
+        "type": "string",
+        "description": "Event type to select"
+      },
+      "node": {
+        "type": "string",
+        "description": "Node name to select"
+      },
+      "stage": {
+        "type": "string",
+        "description": "Processing stage to select"
+      },
+      "beforeAction": {
+        "type": "string",
+        "description": "Action name to select events before the action was executed"
+      },
+      "afterAction": {
+        "type": "string",
+        "description": "Action name to select events after the action was executed"
+      }
+    }
+  }
+}