Refactor asyncio monitoring daemon example application

examples/miniapps/monitoring-daemon-asyncio/README.rst

@@ -1,8 +1,10 @@
-Asyncio Daemon Dependency Injection Example
-===========================================
+Asyncio Daemon + Dependency Injector Example
+============================================
 
-Application ``monitoringdaemon`` is an `asyncio <https://docs.python.org/3/library/asyncio.html>`_
-+ `Dependency Injector <http://python-dependency-injector.ets-labs.org/>`_ application.
+This is an `asyncio <https://docs.python.org/3/library/asyncio.html>`_ +
+`Dependency Injector <http://python-dependency-injector.ets-labs.org/>`_ example application.
+
+The example application is a daemon that monitors availability of web services.
 
 Run
 ---
@@ -31,19 +33,16 @@ The output should be something like:
    monitor_1  |     response code: 200
    monitor_1  |     content length: 648
    monitor_1  |     request took: 0.074 seconds
-   monitor_1  |
    monitor_1  | [2020-08-08 17:04:36,811] [INFO] [HttpMonitor]: Check
    monitor_1  |     GET https://httpbin.org/get
    monitor_1  |     response code: 200
    monitor_1  |     content length: 310
    monitor_1  |     request took: 0.153 seconds
-   monitor_1  |
    monitor_1  | [2020-08-08 17:04:41,731] [INFO] [HttpMonitor]: Check
    monitor_1  |     GET http://example.com
    monitor_1  |     response code: 200
    monitor_1  |     content length: 648
    monitor_1  |     request took: 0.067 seconds
-   monitor_1  |
    monitor_1  | [2020-08-08 17:04:41,787] [INFO] [HttpMonitor]: Check
    monitor_1  |     GET https://httpbin.org/get
    monitor_1  |     response code: 200
@@ -77,11 +76,11 @@ The output should be something like:
    Name                             Stmts   Miss  Cover
    ----------------------------------------------------
    monitoringdaemon/__init__.py         0      0   100%
-   monitoringdaemon/__main__.py         9      9     0%
+   monitoringdaemon/__main__.py        12     12     0%
    monitoringdaemon/containers.py      11      0   100%
-   monitoringdaemon/dispatcher.py      43      5    88%
+   monitoringdaemon/dispatcher.py      44      5    89%
    monitoringdaemon/http.py             6      3    50%
    monitoringdaemon/monitors.py        23      1    96%
    monitoringdaemon/tests.py           37      0   100%
    ----------------------------------------------------
-   TOTAL                              129     18    86%
+   TOTAL                              133     21    84%

examples/miniapps/monitoring-daemon-asyncio/monitoringdaemon/__main__.py

@@ -1,18 +1,21 @@
 """Main module."""
 
-from .containers import ApplicationContainer
+import sys
+
+from dependency_injector.wiring import Provide
+
+from .dispatcher import Dispatcher
+from .containers import Container
 
 
-def main() -> None:
-    """Run the application."""
-    container = ApplicationContainer()
-
-    container.config.from_yaml('config.yml')
-    container.configure_logging()
-
-    dispatcher = container.dispatcher()
+def main(dispatcher: Dispatcher = Provide[Container.dispatcher]) -> None:
     dispatcher.run()
 
 
 if __name__ == '__main__':
+    container = Container()
+    container.config.from_yaml('config.yml')
+    container.configure_logging()
+    container.wire(modules=[sys.modules[__name__]])
+
     main()

examples/miniapps/monitoring-daemon-asyncio/monitoringdaemon/containers.py

@@ -1,4 +1,4 @@
-"""Application containers module."""
+"""Containers module."""
 
 import logging
 import sys
@@ -8,8 +8,7 @@ from dependency_injector import containers, providers
 from . import http, monitors, dispatcher
 
 
-class ApplicationContainer(containers.DeclarativeContainer):
-    """Application container."""
+class Container(containers.DeclarativeContainer):
 
     config = providers.Configuration()
 

examples/miniapps/monitoring-daemon-asyncio/monitoringdaemon/dispatcher.py

@@ -44,6 +44,7 @@ class Dispatcher:
         self._logger.info('Shutting down')
         for task, monitor in zip(self._monitor_tasks, self._monitors):
             task.cancel()
+        self._monitor_tasks.clear()
         self._logger.info('Shutdown finished successfully')
 
     @staticmethod

examples/miniapps/monitoring-daemon-asyncio/monitoringdaemon/monitors.py

@@ -47,7 +47,7 @@ class HttpMonitor(Monitor):
             '    %s %s\n'
             '    response code: %s\n'
             '    content length: %s\n'
-            '    request took: %s seconds\n',
+            '    request took: %s seconds',
             self._method,
             self._url,
             response.status,

examples/miniapps/monitoring-daemon-asyncio/monitoringdaemon/tests.py

@@ -6,7 +6,7 @@ from unittest import mock
 
 import pytest
 
-from .containers import ApplicationContainer
+from .containers import Container
 
 
 @dataclasses.dataclass
@@ -17,7 +17,7 @@ class RequestStub:
 
 @pytest.fixture
 def container():
-    container = ApplicationContainer()
+    container = Container()
     container.config.from_dict({
         'log': {
             'level': 'INFO',