Drop a trigger file in /tmp/ whenever anything is changed

This can be picked up by a cronjob for frequent posting of the
data to central routing servers. This way we don't have to poll
everything very frequently.

1 files changed, 15 insertions, 1 deletions

diff --git a/pgmailmgr/mailmgr/models.py b/pgmailmgr/mailmgr/models.py
index f195487..3f2cb07 100644
--- a/pgmailmgr/mailmgr/models.py
+++ b/pgmailmgr/mailmgr/models.py
@@ -1,5 +1,6 @@
 from django.db import models
 from django.contrib.auth.models import User
+from django.db.models import signals
 
 class LocalDomain(models.Model):
 	local_domain_id = models.AutoField(null=False, primary_key=True)
@@ -11,6 +12,7 @@ class LocalDomain(models.Model):
 	def __unicode__(self):
 		return self.domain_name
 
+	trigger_update = True
 	class Meta:
 		ordering=('domain_name',)
 		db_table='mail"."local_domains'
@@ -25,6 +27,7 @@ class Forwarder(models.Model):
 	def __unicode__(self):
 		return "%s@%s -> %s" % (self.local_part, self.local_domain.domain_name, self.remote_name)
 
+	trigger_update = True
 	class Meta:
 		ordering=('local_part',)
 		db_table='mail"."forwarder'
@@ -41,12 +44,14 @@ class VirtualUser(models.Model):
 	def __unicode__(self):
 		return "%s@%s (%s)" % (self.local_part, self.local_domain.domain_name, self.full_name or '')
 
+	trigger_update = True
 	class Meta:
 		ordering=('local_part',)
 		db_table='mail"."virtual_user'
 		managed=False
 		unique_together=('local_domain', 'local_part', )
-		
+
+
 class UserPermissions(models.Model):
 	user = models.ForeignKey(User, null=False)
 	domain = models.ForeignKey(LocalDomain, null=False)
@@ -65,3 +70,12 @@ class Log(models.Model):
 
 	class Meta:
 		ordering=('-when',)
+
+def pgmail_save_handler(sender, **kwargs):
+    if hasattr(sender, 'trigger_update') and sender.trigger_update:
+        # Touch a temp file in /tmp/ to inform cronjobs we have
+        # changed something.
+        with open('/tmp/.mailmgr_update', 'w') as f:
+            pass
+
+signals.post_save.connect(pgmail_save_handler)