added a check for simplejson existance

1 files changed, 21 insertions, 1 deletions

diff --git a/src/daq/flumotion-plug/sfive.py b/src/daq/flumotion-plug/sfive.py
index 5e48164..0f6abd5 100644
--- a/src/daq/flumotion-plug/sfive.py
+++ b/src/daq/flumotion-plug/sfive.py
@@ -32,13 +32,17 @@
 
 import os
 
+try:
+    import simplejson as json
+except ImportError:
+    json = None
+
 from flumotion.component.plugs import base
 from flumotion.common import messages, i18n, log
 from flumotion.common.poller import Poller
 
 from twisted.internet import protocol, reactor
 from socket import error as socket_error
-import simplejson as json
 import datetime
 
 from flumotion.common.i18n import N_
@@ -89,6 +93,9 @@ class ComponentSFivePlug(base.ComponentPlug):
         self._sfivepoller = None
         self._component = component
 
+        if not self._hasImport():
+            return
+
         properties = self.args['properties']
         self._socket = properties['socket']
         self._hostname = properties['hostname']
@@ -106,6 +113,19 @@ class ComponentSFivePlug(base.ComponentPlug):
 
         self._initSocket()
 
+    def _hasImport(self):
+        """Check simplejson availability"""
+        if not json:
+            m = messages.Warning(T_(N_(
+                "Cannot import module '%s'.\n"), 'simplejson'),
+                                    mid='simplejson-import-error')
+            m.add(T_(N_(
+                "The SFive plug for this component is disabled.")))
+            self._component.addMessage(m)
+            return False
+
+        return True
+
     def stop(self, component):
         if self._sfivepoller:
             self._sfivepoller.stop()