(+) format: adding options for slack message formatting

Author: ont

etc/slacker/config.dist.yml

@@ -2,10 +2,10 @@
 # This is example of config file for slacker.
 # There are two sections:
 #   * default: this is default options for sending message to slack.
-#   * rules: list of rules for matching email message. Currently 'from', 
+#   * rules: list of rules for matching email message. Currently 'from',
 #            'to' and 'subject' fields are supported. Their values can be
 #            regexp to match corresponding email field.
-# 
+#
 # Each rule in list tested in order. First matched rule is used to update
 # values from 'default' section with its 'options' subsection.
 ######
@@ -16,6 +16,7 @@ default:
     icon_url: ''
     slack_token: xoxb-00000000000-aaaaaaaaaaaaaaaaaaaaaaaa
     debug: false
+    format: "subject: %(subject)s; body: %(body)s"  ## default slack message format
 
 
 rules:
@@ -38,3 +39,4 @@ rules:
           channel: '#cron'
           icon_url: ''
           debug: true  ## will output full email with all headers
+          format: "email body is: %(body)s"  ## custom message format

handler.py

@@ -25,7 +25,7 @@ def handle_message(self, message):
         options = self.process_rules(message)
 
         print('matched', options)
-        self.send_to_slack(message.get_payload(), **options)
+        self.send_to_slack(self.extract_text(message), **options)
 
         if options['debug']:
             self.send_to_slack('DEBUG: ' + str(message), **options)
@@ -58,6 +58,12 @@ def process_rules(self, message):
 
         return default
 
+    def extract_text(self, message):
+        fmt = self.config['default'].get('format', '%(body)s')
+        body = message.get_payload()
+        subject = message['Subject']
+        return fmt % dict(body=body, subject=subject)
+
     def send_to_slack(self, text, **options):
         print('sending to slack', text, options)