Standalone Activities: Add ListActivities and CountActivities to sample

standalone-activity/helloworld/README.md

@@ -1,4 +1,7 @@
-This sample demonstrates how to use a Standalone Activity (executing an Activity without wrapping it in a Workflow)
+This sample demonstrates how to use a Standalone Activity (executing an Activity without wrapping it in a Workflow).
+It also shows you how to use the `ListActivities` and `CountActivities` APIs.
+
+## NOTE: This new feature is not ready for use yet. It will only work once we release a special CLI server for pre-release, once that happens, this README will be updated.
 
 ### Steps to run this sample (with expected output):
 1) Run a [Temporal server](https://github.com/temporalio/samples-go/tree/main/#how-to-use). (If you are going to run locally, you will want to start it in another terminal; this command is blocking and runs until it receives a SIGINT (Ctrl + C) command.)
@@ -27,7 +30,6 @@ You should see two console log lines:
 For example:
 ```bash
 2025/12/22 15:00:15 INFO  No logger configured for temporal client. Created default one.
-
 2025/12/22 15:00:16 INFO  Started Worker Namespace default TaskQueue standalone-activity-helloworld WorkerID 82087
 ```
 
@@ -39,13 +41,17 @@ For example:
 go run standalone-activity/helloworld/starter/main.go
 ```
 
-You should see two console log lines: 1) Creating the logger, 2) The standalone activity result
+You should see something similar to the following output.
 
 For example:
 ```bash
-2026/02/05 11:30:47 INFO  No logger configured for temporal client. Created default one.
-
-2026/02/05 11:30:47 Started standalone activity ActivityID standalone_activity_helloworld_ActivityID RunID 019c2f49-1ff1-7a44-beee-7ff4b36ecc27
-
-2026/02/05 11:30:47 Activity result: Hello Temporal!
+2026/02/23 14:12:00 INFO  No logger configured for temporal client. Created default one.
+2026/02/23 14:12:00 Started standalone activity ActivityID standalone_activity_helloworld_ActivityID RunID 019c8c8f-324f-7c06-a92e-a9f7e612ce69
+2026/02/23 14:12:00 Activity result: Hello Temporal!
+2026/02/23 14:12:00 ListActivity results
+2026/02/23 14:12:00 	ActivityID: standalone_activity_helloworld_ActivityID, Type: Activity, Status: Completed
+2026/02/23 14:12:00 CountActivities: 1
 ```
+
+If you run the starter code multiple times, you should see additional `ListActivity` results, as more activites are run.
+The same goes for the number of activities from `CountActivities`.

standalone-activity/helloworld/starter/main.go

@@ -31,7 +31,7 @@ func main() {
 	// Normally we would execute a workflow, but in this case we are executing an activity directly.
 	handle, err := c.ExecuteActivity(context.Background(), activityOptions, helloworld.Activity, "Temporal")
 	if err != nil {
-		log.Fatalln("Unable to execute workflow", err)
+		log.Fatalln("Unable to execute activity", err)
 	}
 
 	log.Println("Started standalone activity", "ActivityID", handle.GetID(), "RunID", handle.GetRunID())
@@ -43,4 +43,29 @@ func main() {
 		log.Fatalln("Unable get standalone activity result", err)
 	}
 	log.Println("Activity result:", result)
+
+	resp, err := c.ListActivities(context.Background(), client.ListActivitiesOptions{
+		Query: "TaskQueue = 'standalone-activity-helloworld'",
+	})
+	if err != nil {
+		log.Fatalln("Unable to list activities", err)
+	}
+
+	log.Println("ListActivity results")
+	for info, err := range resp.Results {
+		if err != nil {
+			log.Fatalln("Error iterating activities", err)
+		}
+		log.Printf("\tActivityID: %s, Type: %s, Status: %v\n",
+			info.ActivityID, info.ActivityType, info.Status)
+	}
+
+	resp1, err := c.CountActivities(context.Background(), client.CountActivitiesOptions{
+		Query: "TaskQueue = 'standalone-activity-helloworld'",
+	})
+	if err != nil {
+		log.Fatalln("Unable to count activities", err)
+	}
+
+	log.Println("Total activities:", resp1.Count)
 }