Removes unnecessary bloat from config & improves management system

config/conf.json

@@ -1,10 +1,7 @@
 {
   "PATH": {
     "SCHEMA": "src/schema/comments_ddl.sql",
-    "MAIN": "database/comments.db",
+    "DATABASE": "database/comments.db",
-    "BACKUP": "database/comments.backup.db",
-    "DEFAULT": "database/default.db",
-    "TEST": "tests/test.db",
     "ERROR_LOG": "logs/error.log",
     "DEBUG_LOG": "logs/debug.log",
     "SERVER_LOG": "logs/server.log"

src/main.py

@@ -75,6 +75,7 @@ def main(argv=None):
     parser = argparse.ArgumentParser(description='LBRY Comment Server')
     parser.add_argument('--port', type=int)
     args = parser.parse_args(argv)
+    config_logging_from_settings(config)
     if args.port:
         config['PORT'] = args.port
     config_logging_from_settings(config)

src/server/app.py

@@ -18,6 +18,7 @@ logger = logging.getLogger(__name__)
 
 
 async def setup_db_schema(app):
+
     if not pathlib.Path(app['db_path']).exists():
         logger.info('Setting up schema in %s', app['db_path'])
         setup_database(app['db_path'], app['config']['PATH']['SCHEMA'])
@@ -25,11 +26,6 @@ async def setup_db_schema(app):
         logger.info(f'Database already exists in {app["db_path"]}, skipping setup')
 
 
-async def close_comment_scheduler(app):
-    logger.info('Closing comment_scheduler')
-    await app['comment_scheduler'].close()
-
-
 async def database_backup_routine(app):
     try:
         while True:
@@ -43,29 +39,41 @@ async def database_backup_routine(app):
 
 async def start_background_tasks(app):
     app['reader'] = obtain_connection(app['db_path'], True)
-    app['waitful_backup'] = app.loop.create_task(database_backup_routine(app))
+    app['waitful_backup'] = asyncio.create_task(database_backup_routine(app))
     app['comment_scheduler'] = await aiojobs.create_scheduler(limit=1, pending_limit=0)
     app['db_writer'] = DatabaseWriter(app['db_path'])
     app['writer'] = app['db_writer'].connection
 
 
-async def stop_background_tasks(app):
+async def close_database_connections(app):
     logger.info('Ending background backup loop')
     app['waitful_backup'].cancel()
     await app['waitful_backup']
     app['reader'].close()
     app['writer'].close()
+    app['db_writer'].cleanup()
+
+
+async def close_comment_scheduler(app):
+    logger.info('Closing comment_scheduler')
+    await app['comment_scheduler'].close()
 
 
 class CommentDaemon:
-    def __init__(self, config, db_path=None, **kwargs):
+    def __init__(self, config, db_file=None, backup=None, **kwargs):
         self.config = config
         app = web.Application()
-        self.insert_to_config(app, config, db_file=db_path)
+        app['config'] = config
+        if db_file:
+            app['db_path'] = db_file
+            app['backup'] = backup
+        else:
+            app['db_path'] = config['PATH']['DATABASE']
+            app['backup'] = backup or (app['db_path'] + '.backup')
         app.on_startup.append(setup_db_schema)
         app.on_startup.append(start_background_tasks)
-        app.on_shutdown.append(stop_background_tasks)
         app.on_shutdown.append(close_comment_scheduler)
+        app.on_cleanup.append(close_database_connections)
         aiojobs.aiohttp.setup(app, **kwargs)
         app.add_routes([
             web.post('/api', api_endpoint),
@@ -73,38 +81,30 @@ class CommentDaemon:
             web.get('/api', get_api_endpoint)
         ])
         self.app = app
-        self.app_runner = web.AppRunner(app)
+        self.app_runner = None
         self.app_site = None
 
-    async def start(self):
+    async def start(self, host=None, port=None):
         self.app['START_TIME'] = time.time()
+        self.app_runner = web.AppRunner(self.app)
         await self.app_runner.setup()
         self.app_site = web.TCPSite(
             runner=self.app_runner,
-            host=self.config['HOST'],
+            host=host or self.config['HOST'],
-            port=self.config['PORT'],
+            port=port or self.config['PORT'],
         )
         await self.app_site.start()
         logger.info(f'Comment Server is running on {self.config["HOST"]}:{self.config["PORT"]}')
 
     async def stop(self):
-        await self.app.shutdown()
+        await self.app_runner.shutdown()
-        await self.app.cleanup()
         await self.app_runner.cleanup()
 
-    @staticmethod
-    def insert_to_config(app, conf=None, db_file=None):
-        db_file = db_file if db_file else 'DEFAULT'
-        app['config'] = conf
-        app['db_path'] = conf['PATH'][db_file]
-        app['backup'] = re.sub(r'\.db$', '.backup.db', app['db_path'])
-        assert app['db_path'] != app['backup']
 
+def run_app(config, db_file=None):
+    comment_app = CommentDaemon(config=config, db_file=db_file, close_timeout=5.0)
 
-def run_app(config):
+    loop = asyncio.get_event_loop()
-    comment_app = CommentDaemon(config=config, db_path='DEFAULT', close_timeout=5.0)
-
-    loop =  asyncio.get_event_loop()
 
     def __exit():
         raise web.GracefulExit()

tests/testcase.py

@@ -1,3 +1,4 @@
+import os
 import pathlib
 import unittest
 from asyncio.runners import _cancel_all_tasks  # type: ignore
@@ -119,15 +120,20 @@ class AsyncioTestCase(unittest.TestCase):
 
 
 class DatabaseTestCase(unittest.TestCase):
+    db_file = 'test.db'
+
+    def __init__(self, methodName='DatabaseTest'):
+        super().__init__(methodName)
+        if pathlib.Path(self.db_file).exists():
+            os.remove(self.db_file)
+
     def setUp(self) -> None:
         super().setUp()
-        if pathlib.Path(config['PATH']['TEST']).exists():
+        setup_database(self.db_file, config['PATH']['SCHEMA'])
-            teardown_database(config['PATH']['TEST'])
+        self.conn = obtain_connection(self.db_file)
-        setup_database(config['PATH']['TEST'], config['PATH']['SCHEMA'])
+        self.addCleanup(self.conn.close)
-        self.conn = obtain_connection(config['PATH']['TEST'])
+        self.addCleanup(os.remove, self.db_file)
 
     def tearDown(self) -> None:
         self.conn.close()
-        teardown_database(config['PATH']['TEST'])
-