Properly clean up temporary capture files at API exit

openflexure_microscope/api/v1.py

@@ -25,6 +25,7 @@ from openflexure_microscope import Microscope
 from openflexure_microscope.camera.pi import StreamingCamera
 from openflexure_stage import OpenFlexureStage
 
+import atexit
 import logging, sys
 
 logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)
@@ -350,6 +351,7 @@ class CaptureListAPI(MicroscopeView):
         :status 200: capture created
         """
         state = parse_payload(request)
+        logging.info(state)
 
         # TODO: Roll all of these ugly if statements into a method for getting payload elements
         if 'filename' in state:
@@ -569,6 +571,12 @@ app.add_url_rule(
     uri('/capture/<capture_id>/download/<filename>'),
     view_func=CaptureDownloadAPI.as_view('capture_download', microscope=api_microscope))
 
+# Automatically clean up microscope at exit
+def cleanup():
+    global api_microscope
+    api_microscope.close()
+
+atexit.register(cleanup)
 
 if __name__ == "__main__":
     app.run(host='0.0.0.0', port="5000", threaded=True, debug=True, use_reloader=False)

openflexure_microscope/camera/capture.py

@@ -24,7 +24,7 @@ class StreamObject(object):
         """Create a new StreamObject, to manage capture data."""
         # Store a nice ID
         self.id = uuid.uuid4().hex
-        logging.info("Created StreamObject {}".format(self.id))
+        logging.info("Created StreamObject {}. keep_on_disk: {}, write_to_file: {}".format(self.id, keep_on_disk, write_to_file))
 
         # Store file format
         self.format = fmt
@@ -81,11 +81,9 @@ class StreamObject(object):
 
         Defaults to datestamp.
         """
-        appendix = ""
-        if not self.keep_on_disk:
-            appendix += ".tmp"
 
-        file_name = "{}.{}".format(filename, fmt)
+        base_name = filename
+        file_name = "{}.{}".format(base_name, fmt)
 
         # Create folder and file
         if folder:
@@ -96,9 +94,17 @@ class StreamObject(object):
         else:
             file_path = file_name
 
-        self.basename = filename
+        # Handle path appendix
+        appendix = ""
+        if not self.keep_on_disk:
+            appendix += ".tmp"
+
+        file_path = file_path + appendix
+
+        #self.basename = filename
         self.file = file_path
         self.filename = file_name
+        self.basename = base_name
 
     def lock(self):
         """Set locked flag to True."""

openflexure_microscope/camera/pi.py

@@ -357,6 +357,7 @@ class StreamingCamera(BaseCamera):
             fmt (str): Format of the capture.
             resize ((int, int)): Resize the captured image.
         """
+        
         # If no filename is specified, build a non-clashing one
         if not filename:
             filename = self.generate_basename(self.images)