Fix minor ProcessStep POST handling bugs.

[plomtask] / run.py

diff --git a/run.py b/run.py
index 644fc4abbf5aa7fcc1e7cd410d931e0f1af8798f..c69dc6ab061c522c75ee2d1420df0fdc44a2f1e1 100755 (executable)
--- a/run.py
+++ b/run.py
@@ -1,15 +1,38 @@
 #!/usr/bin/env python3
 """Call this to start the application."""
 from sys import exit as sys_exit
-from plomtask.misc import HandledException
+from os import environ
+from plomtask.exceptions import HandledException, NotFoundException
 from plomtask.http import TaskHandler, TaskServer
+from plomtask.db import DatabaseFile, UnmigratedDbException
 
+PLOMTASK_DB_PATH = environ.get('PLOMTASK_DB_PATH')
 HTTP_PORT = 8082
+DB_CREATION_ASK = 'Database file not found. Create? Y/n\n'
+DB_MIGRATE_ASK = 'Database file needs migration. Migrate? Y/n\n'
+
+
+def yes_or_fail(question: str, fail_msg: str) -> None:
+    """Ask question, raise HandledException(fail_msg) if reply not yes."""
+    reply = input(question)
+    if not reply.lower() in {'y', 'yes', 'yes.', 'yes!'}:
+        print('Not recognizing reply as "yes".')
+        raise HandledException(fail_msg)
 
 
 if __name__ == '__main__':
     try:
-        server = TaskServer(('localhost', HTTP_PORT), TaskHandler)
+        if not PLOMTASK_DB_PATH:
+            raise HandledException('PLOMTASK_DB_PATH not set.')
+        try:
+            db_file = DatabaseFile(PLOMTASK_DB_PATH)
+        except NotFoundException:
+            yes_or_fail(DB_CREATION_ASK, 'Cannot run without DB.')
+            db_file = DatabaseFile.create_at(PLOMTASK_DB_PATH)
+        except UnmigratedDbException:
+            yes_or_fail(DB_MIGRATE_ASK, 'Cannot run with unmigrated DB.')
+            db_file = DatabaseFile.migrate(PLOMTASK_DB_PATH)
+        server = TaskServer(db_file, ('localhost', HTTP_PORT), TaskHandler)
         print(f'running at port {HTTP_PORT}')
         try:
             server.serve_forever()
@@ -17,5 +40,5 @@ if __name__ == '__main__':
             print('aborting due to keyboard interrupt')
         server.server_close()
     except HandledException as e:
-        print(f'Aborting due to: {e}')
+        print(f'Aborting because: {e}')
         sys_exit(1)