Stop execution

backend/src/executors/echo.rs

@@ -34,13 +34,12 @@ impl Executor for EchoExecutor {
         // For demonstration of streaming, we can use a shell command that outputs multiple lines
         let script = format!(
             r#"echo "Starting task: {}"
-for i in {{1..5}}; do
+for i in {{1..50}}; do
     echo "Progress line $i"
     sleep 1
 done
 echo "Task completed: {}""#,
-            task.title,
-            task.title
+            task.title, task.title
         );
 
         let child = Command::new("sh")

backend/src/lib.rs

@@ -1,4 +1,5 @@
 pub mod auth;
+pub mod execution_monitor;
 pub mod executor;
 pub mod executors;
 pub mod models;

backend/src/routes/tasks.rs

@@ -281,6 +281,86 @@ pub async fn create_task_attempt_activity(
     }
 }
 
+pub async fn stop_task_attempt(
+    _auth: AuthUser,
+    Path((project_id, task_id, attempt_id)): Path<(Uuid, Uuid, Uuid)>,
+    Extension(pool): Extension<PgPool>,
+    Extension(app_state): Extension<crate::execution_monitor::AppState>
+) -> Result<ResponseJson<ApiResponse<()>>, StatusCode> {
+    // Verify task attempt exists and belongs to the correct task
+    match TaskAttempt::exists_for_task(&pool, attempt_id, task_id, project_id).await {
+        Ok(false) => return Err(StatusCode::NOT_FOUND),
+        Err(e) => {
+            tracing::error!("Failed to check task attempt existence: {}", e);
+            return Err(StatusCode::INTERNAL_SERVER_ERROR);
+        }
+        Ok(true) => {}
+    }
+
+    // Find and stop the running execution
+    let mut stopped = false;
+    {
+        let mut executions = app_state.running_executions.lock().await;
+        let mut execution_id_to_remove = None;
+        
+        // Find the execution for this attempt
+        for (exec_id, execution) in executions.iter_mut() {
+            if execution.task_attempt_id == attempt_id {
+                // Kill the process
+                match execution.child.kill().await {
+                    Ok(_) => {
+                        stopped = true;
+                        execution_id_to_remove = Some(*exec_id);
+                        tracing::info!("Stopped execution for task attempt {}", attempt_id);
+                        break;
+                    }
+                    Err(e) => {
+                        tracing::error!("Failed to kill process for attempt {}: {}", attempt_id, e);
+                        return Err(StatusCode::INTERNAL_SERVER_ERROR);
+                    }
+                }
+            }
+        }
+        
+        // Remove the stopped execution from the map
+        if let Some(exec_id) = execution_id_to_remove {
+            executions.remove(&exec_id);
+        }
+    }
+
+    if !stopped {
+        return Ok(ResponseJson(ApiResponse {
+            success: true,
+            data: None,
+            message: Some("No running execution found for this attempt".to_string()),
+        }));
+    }
+
+    // Create a new activity record to mark as stopped
+    let activity_id = Uuid::new_v4();
+    let create_activity = CreateTaskAttemptActivity {
+        task_attempt_id: attempt_id,
+        status: Some(TaskAttemptStatus::Paused),
+        note: Some("Execution stopped by user".to_string()),
+    };
+
+    if let Err(e) = TaskAttemptActivity::create(
+        &pool,
+        &create_activity,
+        activity_id,
+        TaskAttemptStatus::Paused,
+    ).await {
+        tracing::error!("Failed to create stopped activity: {}", e);
+        return Err(StatusCode::INTERNAL_SERVER_ERROR);
+    }
+
+    Ok(ResponseJson(ApiResponse {
+        success: true,
+        data: None,
+        message: Some("Task attempt stopped successfully".to_string()),
+    }))
+}
+
 pub fn tasks_router() -> Router {
     use axum::routing::{post, put, delete};
     
@@ -289,6 +369,7 @@ pub fn tasks_router() -> Router {
         .route("/projects/:project_id/tasks/:task_id", get(get_task).put(update_task).delete(delete_task))
         .route("/projects/:project_id/tasks/:task_id/attempts", get(get_task_attempts).post(create_task_attempt))
         .route("/projects/:project_id/tasks/:task_id/attempts/:attempt_id/activities", get(get_task_attempt_activities).post(create_task_attempt_activity))
+        .route("/projects/:project_id/tasks/:task_id/attempts/:attempt_id/stop", post(stop_task_attempt))
 }
 
 #[cfg(test)]

frontend/src/components/tasks/TaskDetailsDialog.tsx

@@ -75,6 +75,7 @@ export function TaskDetailsDialog({
   const [activitiesLoading, setActivitiesLoading] = useState(false);
   const [selectedExecutor, setSelectedExecutor] = useState<string>("echo");
   const [creatingAttempt, setCreatingAttempt] = useState(false);
+  const [stoppingAttempt, setStoppingAttempt] = useState(false);
 
   // Edit mode state
   const [isEditMode, setIsEditMode] = useState(false);
@@ -83,6 +84,10 @@ export function TaskDetailsDialog({
   const [editedStatus, setEditedStatus] = useState<TaskStatus>("todo");
   const [savingTask, setSavingTask] = useState(false);
 
+  // Check if the selected attempt is currently running (latest activity is "inprogress")
+  const isAttemptRunning = selectedAttempt && attemptActivities.length > 0 && 
+    attemptActivities[0].status === "inprogress";
+
   useEffect(() => {
     if (isOpen && task) {
       fetchTaskAttempts(task.id);
@@ -236,6 +241,34 @@ export function TaskDetailsDialog({
     }
   };
 
+  const stopTaskAttempt = async () => {
+    if (!task || !selectedAttempt) return;
+
+    try {
+      setStoppingAttempt(true);
+      const response = await makeAuthenticatedRequest(
+        `/api/projects/${projectId}/tasks/${task.id}/attempts/${selectedAttempt.id}/stop`,
+        {
+          method: "POST",
+          headers: {
+            "Content-Type": "application/json",
+          },
+        }
+      );
+
+      if (response.ok) {
+        // Refresh the activities list to show the stopped status
+        fetchAttemptActivities(selectedAttempt.id);
+      } else {
+        onError("Failed to stop task attempt");
+      }
+    } catch (err) {
+      onError("Failed to stop task attempt");
+    } finally {
+      setStoppingAttempt(false);
+    }
+  };
+
   return (
     <Dialog open={isOpen} onOpenChange={onOpenChange} className="max-w-7xl">
       <DialogContent className="max-h-[85vh] overflow-y-auto">
@@ -513,31 +546,47 @@ export function TaskDetailsDialog({
 
                   <div className="space-y-2">
                     <Label className="text-xs text-muted-foreground">
-                      New Attempt
+                      Actions
                     </Label>
                     <div className="flex flex-col gap-2">
-                      <Select
-                        value={selectedExecutor}
-                        onValueChange={(value) =>
-                          setSelectedExecutor(value as "echo" | "claude")
-                        }
-                      >
-                        <SelectTrigger>
-                          <SelectValue />
-                        </SelectTrigger>
-                        <SelectContent>
-                          <SelectItem value="echo">Echo</SelectItem>
-                          <SelectItem value="claude">Claude</SelectItem>
-                        </SelectContent>
-                      </Select>
-                      <Button
-                        onClick={createNewAttempt}
-                        disabled={creatingAttempt}
-                        size="sm"
-                        className="w-full"
-                      >
-                        {creatingAttempt ? "Creating..." : "Create Attempt"}
-                      </Button>
+                      {isAttemptRunning && (
+                        <Button
+                          onClick={stopTaskAttempt}
+                          disabled={stoppingAttempt}
+                          size="sm"
+                          variant="destructive"
+                          className="w-full"
+                        >
+                          {stoppingAttempt ? "Stopping..." : "Stop Execution"}
+                        </Button>
+                      )}
+                      <div className="space-y-2">
+                        <Label className="text-xs text-muted-foreground">
+                          New Attempt
+                        </Label>
+                        <Select
+                          value={selectedExecutor}
+                          onValueChange={(value) =>
+                            setSelectedExecutor(value as "echo" | "claude")
+                          }
+                        >
+                          <SelectTrigger>
+                            <SelectValue />
+                          </SelectTrigger>
+                          <SelectContent>
+                            <SelectItem value="echo">Echo</SelectItem>
+                            <SelectItem value="claude">Claude</SelectItem>
+                          </SelectContent>
+                        </Select>
+                        <Button
+                          onClick={createNewAttempt}
+                          disabled={creatingAttempt}
+                          size="sm"
+                          className="w-full"
+                        >
+                          {creatingAttempt ? "Creating..." : "Create Attempt"}
+                        </Button>
+                      </div>
                     </div>
                   </div>
                 </div>