Allow botlist API call to respond to quarantined: and is_dead:

appengine/swarming/handlers_endpoints.py

Index: appengine/swarming/handlers_endpoints.py
diff --git a/appengine/swarming/handlers_endpoints.py b/appengine/swarming/handlers_endpoints.py
index 5ced064a782d16430703831503df9e22a64268ce..d3ebe6649b1f53b1443b2151f6f28970b00f842b 100644
--- a/appengine/swarming/handlers_endpoints.py
+++ b/appengine/swarming/handlers_endpoints.py
@@ -620,7 +620,7 @@ class SwarmingBotsService(remote.Service):
     """
     logging.info('%s', request)
     now = utils.utcnow()
-    q = bot_management.BotInfo.query().order(bot_management.BotInfo.key)
+    q = bot_management.BotInfo.query()
     for d in request.dimensions:
       if not ':' in d:
         raise endpoints.BadRequestException('Invalid dimensions')
@@ -628,6 +628,19 @@ class SwarmingBotsService(remote.Service):
       if len(parts) != 2 or any(i.strip() != i or not i for i in parts):
         raise endpoints.BadRequestException('Invalid dimensions')
       q = q.filter(bot_management.BotInfo.dimensions_flat == d)
+
+    if request.quarantined == 'true':
+      q = q.filter(bot_management.BotInfo.quarantined == True)
+    elif request.quarantined == 'false':
+      q = q.filter(bot_management.BotInfo.quarantined == False)
+
+    dt = datetime.timedelta(
+        seconds=config.settings().bot_death_timeout_secs)
+    timeout = now - dt
+    if request.is_dead == 'true':
+      q = q.filter(bot_management.BotInfo.last_seen_ts < timeout)
+    elif request.is_dead == 'false':
+      q = q.filter(bot_management.BotInfo.last_seen_ts > timeout)
     bots, cursor = datastore_utils.fetch_page(q, request.limit, request.cursor)
     return swarming_rpcs.BotList(
         cursor=cursor,