[app][fix] dont send sys exit

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "digiflow"
-version = "5.1.2"
+version = "5.1.3"
 description = "Father's Little Digitization Workflow Helper"
 readme = "README.md"
 requires-python = ">=3.8"

src/digiflow/record/__init__.py

@@ -8,4 +8,8 @@
     State,
     Datetime,
 )
-from .record_service import Client, HandlerInformation, RecordsExhaustedException, run_server
+from .record_service import (
+    Client, HandlerInformation, 
+	RecordsExhaustedException, RecordsServiceException,
+	run_server
+)

src/digiflow/record/record_service.py

@@ -53,6 +53,10 @@ class RecordsExhaustedException(df_rc.RecordDataException):
     achieved anymore"""
 
 
+class RecordsServiceException(df_rc.RecordDataException):
+    """Mark generic exception state"""
+
+
 class RecordRequestHandler(http.server.SimpleHTTPRequestHandler,
                            df.FallbackLogger):
     """Simple handler for POST and GET requests
@@ -234,18 +238,16 @@ def get_record(self, get_record_state, set_record_state):
         result = response.content
         if status == 404:
             # probably nothing to do?
-            if DATA_EXHAUSTED_MARK in str(result):
+            if DATA_EXHAUSTED_PREFIX in str(result):
                 if self.logger is not None:
                     self.logger.info(result)
                 raise RecordsExhaustedException(result.decode(encoding='utf-8'))
-            # otherwise exit anyway
-            sys.exit(1)
 
         if status != 200:
             if self.logger is not None:
                 self.logger.error(
                     "server connection status: %s -> %s", status, result)
-            sys.exit(1)
+            raise RecordsServiceException(f"Record service error {status} - {result}")
 
         # otherwise response ok
         self.record = df_r.Record.parse(response.json())