1 files changed, 43 insertions, 0 deletions
diff --git a/src/buildstream/_scheduler/queues/sourcepullqueue.py b/src/buildstream/_scheduler/queues/sourcepullqueue.py
new file mode 100644
index 000000000..255edf443
--- /dev/null
+++ b/src/buildstream/_scheduler/queues/sourcepullqueue.py
@@ -0,0 +1,43 @@
+#
+#  Copyright (C) 2019 Bloomberg Finance LP
+#
+#  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/>.
+#
+
+from . import Queue, QueueStatus
+from ..resources import ResourceType
+from ..._exceptions import SkipJob
+
+
+# A queue which pushes staged sources
+#
+class SourcePullQueue(Queue):
+
+    action_name = "Src-pull"
+    complete_name = "Sources pulled"
+    resources = [ResourceType.DOWNLOAD, ResourceType.CACHE]
+
+    def get_process_func(self):
+        return SourcePullQueue._pull_or_skip
+
+    def status(self, element):
+        if element._skip_source_pull():
+            return QueueStatus.SKIP
+
+        return QueueStatus.READY
+
+    @staticmethod
+    def _pull_or_skip(element):
+        if not element._source_pull():
+            raise SkipJob(SourcePullQueue.action_name)