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#
# Copyright (C) 2016 Codethink Limited
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
#
# Authors:
# Tristan Van Berkom <tristan.vanberkom@codethink.co.uk>
# Jürg Billeter <juerg.billeter@codethink.co.uk>
# BuildStream toplevel imports
from ...plugin import _plugin_lookup
from ... import SourceError
# Local imports
from . import Queue, QueueStatus
from ..resources import ResourceType
# A queue which tracks sources
#
class TrackQueue(Queue):
action_name = "Track"
complete_name = "Tracked"
resources = [ResourceType.DOWNLOAD]
def process(self, element):
return element._track()
def status(self, element):
# We can skip elements entirely if they have no sources.
if not list(element.sources()):
# But we still have to mark them as tracked
element._tracking_done()
return QueueStatus.SKIP
return QueueStatus.READY
def done(self, _, element, result, success):
if not success:
return False
changed = False
# Set the new refs in the main process one by one as they complete
for unique_id, new_ref in result:
source = _plugin_lookup(unique_id)
try:
# We appear processed if at least one source has changed
if source._save_ref(new_ref):
changed = True
except SourceError as e:
# FIXME: We currently dont have a clear path to
# fail the scheduler from the main process, so
# this will just warn and BuildStream will exit
# with a success code.
#
source.warn("Failed to update project file",
detail="{}".format(e))
element._tracking_done()
# We'll appear as a skipped element if tracking resulted in no change
return changed
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