MCS-1982 - [Webenabled] Attempting Unavailable Action Waits until Timeout

webenabled/mcs_interface.py

@@ -199,6 +199,15 @@ def _post_step_and_get_output(self, action: str, params=None):
 
         return action_to_return, images, step_output
 
+    def check_for_error(self, elapsed):
+        # Shouldn't need to wait very long for errors like "invalid action"
+        secs_to_check = 1.0
+        if (elapsed > secs_to_check):
+            error_file_list = glob.glob(
+                self.step_output_dir + "/error_*.json")
+
+            return len(error_file_list) > 0
+
     def get_images_and_step_output(self, startup=False, init_scene=False):
         """Watch the output directory and return the latest images and step
         output that appears. If it does not appear in <timeout> seconds, then
@@ -214,8 +223,14 @@ def get_images_and_step_output(self, startup=False, init_scene=False):
                 self.img_name = self.blank_path
                 return [self.img_name], self.step_output
 
-            if elapsed > IMAGE_WAIT_TIMEOUT:
-                self.logger.info("Timeout waiting for image")
+            quick_error_check = self.check_for_error(elapsed)
+
+            if elapsed > IMAGE_WAIT_TIMEOUT or quick_error_check:
+                log_message = "Timeout waiting for image"
+                if (quick_error_check):
+                    log_message = "Error returned from MCS controller."
+
+                self.logger.info(log_message)
 
                 list_of_error_files = glob.glob(
                     self.step_output_dir + "/error_*.json")

webenabled/templates/mcs_page.html

@@ -475,6 +475,11 @@ <h1>Machine Common Sense</h1>
     }
 
     function runMultipleActions(action, totalCount) {
+        if (document.getElementById('scene-filename').innerHTML == "None - Please select a scene.") {
+            alert("Please select a scene before attempting an action.");
+            return;
+        }
+
         console.log('run multiple actions: ' + action + ' x ' + totalCount);
         processingKeypress = true;
         loadingSpinner(true);
@@ -835,7 +840,7 @@ <h1>Machine Common Sense</h1>
             return;
         }
 
-        if (document.getElementById('scene-filename').innerHTML == "None") {
+        if (document.getElementById('scene-filename').innerHTML == "None - Please select a scene.") {
             alert("Please select a scene before attempting an action.");
             return;
         }