Update postfix.py

nixstatsagent/plugins/postfix.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+import os
+import plugins
+
+class Plugin(plugins.BasePlugin):
+    __name__ = 'postfix'
+
+    def run(self, config):
+        '''
+        postfix mail queue monitoring. Needs sudo access.
+        Add the following section to /etc/nixstats.ini
+
+        [postfix]
+        enabled=yes
+
+        Inspiration:
+        - https://github.com/NIXStats/nixstatsagent/blob/master/nixstatsagent/plugins/exim.py
+        - https://serverfault.com/questions/697670/how-to-monitor-the-postfix-mail-queue-using-monit/1097886#1097886
+        - https://serverfault.com/questions/58196/how-do-i-check-the-postfix-queue-size/577766#577766
+
+        '''
+
+        metrics = (
+                'maildrop',
+                'hold',
+                'incoming',
+                'active',
+                'deferred',
+                'bounce',
+                'corrupt'                
+        )
+
+        data = {}
+
+        for metric in metrics:
+          data[metric] = int(os.popen('sudo find /var/spool/postfix/' + metric + ' -type f | wc -l').read())
+
+        return data
+
+if __name__ == '__main__':
+    Plugin().execute()