Adding Example in Support of Issue #297

examples/reload_config/myapp.py

@@ -0,0 +1,41 @@
+
+from time import sleep
+from cement.core.exc import CaughtSignal
+from cement.core import hook
+from cement.core.foundation import CementApp
+from cement.core.controller import CementBaseController, expose
+
+def print_foo(app):
+    print("Foo => %s" % app.config.get('myapp', 'foo'))
+    print("Example Foo => %s" % app.config.get('example', 'foo'))
+
+
+class Base(CementBaseController):
+    class Meta:
+        label = 'base'
+
+    @expose(hide=True)
+    def default(self):
+        print('Inside Base.default()')
+
+        # simulate a long running process
+        while True:
+            sleep(30)
+
+class MyApp(CementApp):
+    class Meta:
+        label = 'myapp'
+        base_controller = Base
+        extensions = ['reload_config']
+
+
+with MyApp() as app:
+    # run this anytime the configuration has changed
+    hook.register('post_reload_config', print_foo)
+
+    try:
+        app.run()
+    except CaughtSignal as e:
+        # maybe do something... but catch it regardless so app.close() is
+        # called when exiting `with` cleanly.
+        print(e)