Add --output option to Swarming client and pass it through to the bot

appengine/swarming/server/task_request.py

 # coding: utf-8
 # Copyright 2014 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """Tasks definition.
 
 Each user request creates a new TaskRequest. The TaskRequest instance saves the
 metadata of the request, e.g. who requested it, when why, etc. It links to the
 actual data of the request in a TaskProperties. The TaskProperties represents
@@ skipping 402 matching lines @@
   # Bot controlled timeout for new bytes from the subprocess. If a subprocess
   # doesn't output new data to stdout for .io_timeout_secs, consider the command
   # timed out. Optional.
   io_timeout_secs = ndb.IntegerProperty(
       validator=_validate_timeout, indexed=False)
 
   # If True, the task can safely be served results from a previously succeeded
   # task.
   idempotent = ndb.BooleanProperty(default=False, indexed=False)
 
+  # A list of outputs expected. If empty, all files written to
+  # $(ISOLATED_OUTDIR) will be returned; otherwise, the files in this list
+  # will be added to those in that directory.

[M-A Ruel, 2016/10/26 18:47:32]

# The path must be in posix form.

You must add a validator. See the path validator above for example. 

+  outputs = ndb.StringProperty(repeated=True, indexed=False)
+
   @property
   def is_terminate(self):
     """If True, it is a terminate request."""
     return (
         not self.commands and
         not self.command and
         self.dimensions.keys() == [u'id'] and
         not (self.inputs_ref and self.inputs_ref.isolated) and
         not self.env and
         not self.execution_timeout_secs and
@@ skipping 417 matching lines @@
   init_new_request(request, allow_high_priority)
   return request
 
 
 def validate_priority(priority):
   """Throws ValueError if priority is not a valid value."""
   if 0 > priority or MAXIMUM_PRIORITY < priority:
     raise datastore_errors.BadValueError(
         'priority (%d) must be between 0 and %d (inclusive)' %
         (priority, MAXIMUM_PRIORITY))