tweak App api to make it easier to override and perform global actions before and after a command runs

2 files changed, 12 insertions, 1 deletions

diff --git a/demoapp/cliffdemo/main.py b/demoapp/cliffdemo/main.py
index 0a5b728..cebf552 100644
--- a/demoapp/cliffdemo/main.py
+++ b/demoapp/cliffdemo/main.py
@@ -1,3 +1,4 @@
+import logging
 import sys
 
 from cliff.app import App
@@ -5,6 +6,9 @@ from cliff.commandmanager import CommandManager
 
 
 class DemoApp(App):
+
+    log = logging.getLogger(__name__)
+
     def __init__(self):
         super(DemoApp, self).__init__(
             description='cliff demo app',
@@ -12,6 +16,12 @@ class DemoApp(App):
             command_manager=CommandManager('cliff.demo'),
             )
 
+    def prepare_to_run_command(self, cmd):
+        self.log.debug('prepare_to_run_command %s', cmd.__class__.__name__)
+
+    def clean_up(self, cmd, result):
+        self.log.debug('clean_up %s', cmd.__class__.__name__)
+
 
 def main(argv=sys.argv[1:]):
     myapp = DemoApp()
diff --git a/demoapp/cliffdemo/simple.py b/demoapp/cliffdemo/simple.py
index f4a16f8..2f273b9 100644
--- a/demoapp/cliffdemo/simple.py
+++ b/demoapp/cliffdemo/simple.py
@@ -9,5 +9,6 @@ class Simple(Command):
     log = logging.getLogger(__name__)
 
     def run(self, parsed_args):
+        self.log.info('sending greeting')
         self.log.debug('debugging')
-        self.log.info('hi!')
+        print('hi!')