# Copyright (C) 2009 Google Inc. All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # * Redistributions in binary form must reproduce the above # copyright notice, this list of conditions and the following disclaimer # in the documentation and/or other materials provided with the # distribution. # * Neither the name of Google Inc. nor the names of its # contributors may be used to endorse or promote products derived from # this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. import datetime from google.appengine.ext import webapp from google.appengine.ext.webapp import template from model.queues import queues, display_name_for_queue from model.queuestatus import QueueStatus from model.workitems import WorkItems class QueueBubble(object): """View support class for recentstatus.html""" def __init__(self, queue_name): self._queue_name = queue_name self._work_items = WorkItems.all().filter("queue_name =", queue_name).get() self._last_status = QueueStatus.all().filter("queue_name =", queue_name).order("-date").get() def name(self): return self._queue_name def display_name(self): return display_name_for_queue(self._queue_name) def _last_status_date(self): if not self._last_status: return None return self._last_status.date def last_heard_from(self): if not self._work_items: return self._last_status_date() return max(self._last_status_date(), self._work_items.date) def is_alive(self): if not self.last_heard_from(): return False return self.last_heard_from() > (datetime.datetime.now() - datetime.timedelta(minutes=30)) def status_class(self): if not self.is_alive(): return "dead" if self.pending_items_count() > 1: return "behind" return "alive" def status_text(self): if not self._work_items: return "Offline" if not self._work_items.item_ids: return "Idle" return self._last_status.message def pending_items_count(self): if not self._work_items: return 0 return len(self._work_items.item_ids) class QueuesOverview(webapp.RequestHandler): def get(self): template_values = { "queues": [QueueBubble(queue_name) for queue_name in queues], } self.response.out.write(template.render("templates/recentstatus.html", template_values))