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      1 # Copyright (C) 2009 Google Inc. All rights reserved.
      2 #
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions are
      5 # met:
      6 # 
      7 #     * Redistributions of source code must retain the above copyright
      8 # notice, this list of conditions and the following disclaimer.
      9 #     * Redistributions in binary form must reproduce the above
     10 # copyright notice, this list of conditions and the following disclaimer
     11 # in the documentation and/or other materials provided with the
     12 # distribution.
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     14 # contributors may be used to endorse or promote products derived from
     15 # this software without specific prior written permission.
     16 # 
     17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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     20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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     23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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     25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 import re
     30 
     31 from google.appengine.api import memcache
     32 
     33 from model.queues import Queue
     34 from model.queuestatus import QueueStatus
     35 from model.workitems import WorkItems
     36 
     37 
     38 class Attachment(object):
     39     @classmethod
     40     def dirty(cls, attachment_id):
     41         memcache.delete(str(attachment_id), namespace="attachment-summary")
     42 
     43     @classmethod
     44     def recent(cls, limit=1):
     45         statuses = QueueStatus.all().order("-date")
     46         # Notice that we use both a set and a list here to keep the -date ordering.
     47         ids = []
     48         visited_ids = set()
     49         for status in statuses:
     50             attachment_id = status.active_patch_id
     51             if not attachment_id:
     52                 continue
     53             if attachment_id in visited_ids:
     54                 continue
     55             visited_ids.add(attachment_id)
     56             ids.append(attachment_id)
     57             if len(visited_ids) >= limit:
     58                 break
     59         return map(cls, ids)
     60 
     61     def __init__(self, attachment_id):
     62         self.id = attachment_id
     63         self._summary = None
     64         self._cached_queue_positions = None
     65 
     66     def summary(self):
     67         if self._summary:
     68             return self._summary
     69         self._summary = memcache.get(str(self.id), namespace="attachment-summary")
     70         if self._summary:
     71             return self._summary
     72         self._summary = self._fetch_summary()
     73         memcache.set(str(self.id), self._summary, namespace="attachment-summary")
     74         return self._summary
     75 
     76     def state_from_queue_status(self, status):
     77         table = {
     78             "Pass" : "pass",
     79             "Fail" : "fail",
     80         }
     81         state = table.get(status.message)
     82         if state:
     83             return state
     84         if status.message.startswith("Error:"):
     85             return "error"
     86         if status:
     87             return "pending"
     88         return None
     89 
     90     def position_in_queue(self, queue):
     91         return self._queue_positions().get(queue.name())
     92 
     93     def status_for_queue(self, queue):
     94         # summary() is a horrible API and should be killed.
     95         queue_summary = self.summary().get(queue.name_with_underscores())
     96         if not queue_summary:
     97             return None
     98         return queue_summary.get("status")
     99 
    100     def bug_id(self):
    101         return self.summary().get("bug_id")
    102 
    103     def _queue_positions(self):
    104         if self._cached_queue_positions:
    105             return self._cached_queue_positions
    106         # FIXME: Should we be mem-caching this?
    107         self._cached_queue_positions = self._calculate_queue_positions()
    108         return self._cached_queue_positions
    109 
    110     def _calculate_queue_positions(self):
    111         all_work_items = WorkItems.all().fetch(limit=len(Queue.all()))
    112         return dict([(items.queue.name(), items.display_position_for_attachment(self.id)) for items in all_work_items])
    113 
    114     # FIXME: This is controller/view code and does not belong in a model.
    115     def _fetch_summary(self):
    116         summary = { "attachment_id" : self.id }
    117 
    118         first_status = QueueStatus.all().filter('active_patch_id =', self.id).get()
    119         if not first_status:
    120             # We don't have any record of this attachment.
    121             return summary
    122         summary["bug_id"] = first_status.active_bug_id
    123 
    124         for queue in Queue.all():
    125             summary[queue.name_with_underscores()] = None
    126             status = QueueStatus.all().filter('queue_name =', queue.name()).filter('active_patch_id =', self.id).order('-date').get()
    127             if status:
    128                 # summary() is a horrible API and should be killed.
    129                 summary[queue.name_with_underscores()] = {
    130                     "state": self.state_from_queue_status(status),
    131                     "status": status,
    132                 }
    133         return summary
    134