1 files changed, 59 insertions, 0 deletions
diff --git a/Tools/QueueStatusServer/handlers/nextpatch.py b/Tools/QueueStatusServer/handlers/nextpatch.py
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+++ b/Tools/QueueStatusServer/handlers/nextpatch.py
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+# Copyright (C) 2010 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.
+
+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