sandbox: Add abstract SandboxREAPI class

This provides a skeleton for sandbox implementations based on the Remote
Execution API.

1 files changed, 29 insertions, 0 deletions

diff --git a/src/buildstream/sandbox/_sandboxreapi.py b/src/buildstream/sandbox/_sandboxreapi.py
new file mode 100644
index 000000000..ca7fbd827
--- /dev/null
+++ b/src/buildstream/sandbox/_sandboxreapi.py
@@ -0,0 +1,29 @@
+#
+#  Copyright (C) 2018-2019 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 .sandbox import Sandbox
+
+
+# SandboxREAPI()
+#
+# Abstract class providing a skeleton for sandbox implementations based on
+# the Remote Execution API.
+#
+class SandboxREAPI(Sandbox):
+
+    def _use_cas_based_directory(self):
+        # Always use CasBasedDirectory for REAPI
+        return True