From f234376034566fb6579306cfe9bb9cd812fd507c Mon Sep 17 00:00:00 2001
From: Fabien Meghazi <fme@odoo.com>
Date: Wed, 6 Sep 2017 17:01:33 +0200
Subject: [PATCH] [FIX] bus: compatibility with Odoo's PAAS external long
 polling handler

Add a `peek` option in the bus event dispatcher polling in order to let
an external event dispatcher fetch the notifications and their
corresponding channels.

Cherry-pick of rev. f2f99dc091947c0799b17c767a6ad923cd535025
---
 addons/bus/models/bus.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/addons/bus/models/bus.py b/addons/bus/models/bus.py
index 645b67d2607..e58bc8f0276 100644
--- a/addons/bus/models/bus.py
+++ b/addons/bus/models/bus.py
@@ -128,6 +128,11 @@ class ImDispatch(object):
         with registry.cursor() as cr:
             env = api.Environment(cr, SUPERUSER_ID, {})
             notifications = env['bus.bus'].poll(channels, last, options)
+
+        # immediatly returns in peek mode
+        if options.get('peek'):
+            return dict(notifications=notifications, channels=channels)
+
         # or wait for future ones
         if not notifications:
             if not self.started: