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# Copyright (C) 2010 Google Inc. All rights reserved.
#
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from datetime import datetime
from google.appengine.ext import db
from google.appengine.ext import webapp
from model.queues import Queue
class NextPatch(webapp.RequestHandler):
# FIXME: This should probably be a post, or an explict lock_patch
# since GET requests shouldn't really modify the datastore.
def get(self, queue_name):
queue = Queue.queue_with_name(queue_name)
if not queue:
self.error(404)
return
# FIXME: Patch assignment should probably move into Queue.
patch_id = db.run_in_transaction(self._assign_patch, queue.active_work_items().key(), queue.work_items().item_ids)
if not patch_id:
self.error(404)
return
self.response.out.write(patch_id)
@staticmethod
def _assign_patch(key, work_item_ids):
now = datetime.now()
active_work_items = db.get(key)
active_work_items.deactivate_expired(now)
next_item = active_work_items.next_item(work_item_ids, now)
active_work_items.put()
return next_item