Allow dots in dimension key name.

appengine/swarming/server/task_request.py

 # coding: utf-8
 # Copyright 2014 The LUCI Authors. All rights reserved.
 # Use of this source code is governed by the Apache v2.0 license that can be
 # found in the LICENSE file.
 
 """Tasks definition.
 
 Each user request creates a new TaskRequest. The TaskRequest instance saves the
 metadata of the request, e.g. who requested it, when why, etc. It links to the
 actual data of the request in a TaskProperties. The TaskProperties represents
@@ skipping 50 matching lines @@
 from components import pubsub
 from components import utils
 from server import task_pack
 
 
 # Maximum acceptable priority value, which is effectively the lowest priority.
 MAXIMUM_PRIORITY = 255
 
 
 # Enforced on both task request and bots.
-DIMENSION_KEY_RE = ur'^[a-zA-Z\-\_]+$'
+DIMENSION_KEY_RE = ur'^[a-zA-Z\-\_\.]+$'
 
 
 # One day in seconds. Add 10s to account for small jitter.
 _ONE_DAY_SECS = 24*60*60 + 10
 
 
 # Seven day in seconds. Add 10s to account for small jitter.
 _SEVEN_DAYS_SECS = 7*24*60*60 + 10
 
 
@@ skipping 566 matching lines @@
   _put_request(request)
   return request
 
 
 def validate_priority(priority):
   """Throws ValueError if priority is not a valid value."""
   if 0 > priority or MAXIMUM_PRIORITY < priority:
     raise datastore_errors.BadValueError(
         'priority (%d) must be between 0 and %d (inclusive)' %
         (priority, MAXIMUM_PRIORITY))