for Decimal in getJobStatisticsPerSite's return

PandaPkgInfo.py

@@ -1 +1 @@
-release_version = "0.0.50"
+release_version = "0.0.51"

pandaserver/taskbuffer/WrappedPickle.py

@@ -1,4 +1,5 @@
 import sys
+import decimal
 from io import BytesIO
 try:
     # python 2
@@ -23,6 +24,20 @@ def __setattr__(self, key, value):
                 pickle.Unpickler.__setattr__(self, key, value)
 
 
+# conversion for unserializable values
+def conversion_func(item):
+    if isinstance(item, list):
+        return [conversion_func(i) for i in item]
+    if isinstance(item, dict):
+        return {k: conversion_func(item[k]) for k in item}
+    if isinstance(item, decimal.Decimal):
+        if item == item.to_integral_value():
+            item = int(item)
+        else:
+            item = float(item)
+    return item
+
+
 # wrapper to avoid de-serializing unsafe objects
 class WrappedPickle(object):
     # allowed modules and classes
@@ -76,5 +91,7 @@ def loads(cls,pickle_string):
 
     # dumps
     @classmethod
-    def dumps(cls, obj):
+    def dumps(cls, obj, convert_to_safe=False):
+        if convert_to_safe:
+            obj = conversion_func(obj)
         return pickle.dumps(obj, protocol=0)

pandaserver/userinterface/UserIF.py

@@ -350,7 +350,7 @@ def getJobStatisticsPerSite(self,predefined=False,workingGroup='',countryGroup='
         ret = self.taskBuffer.getJobStatistics(readArchived,predefined,workingGroup,countryGroup,jobType,
                                                minPriority=minPriority)
         # serialize
-        return WrappedPickle.dumps(ret)
+        return WrappedPickle.dumps(ret, convert_to_safe=True)
 
 
     # get job statistics per site and resource