[PATCH v2 12/25] tests/docker: add script for automating container refresh

["Daniel P. Berrangé" <berrange@redhat.com>]

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 tests/docker/dockerfiles/refresh | 53 ++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100755 tests/docker/dockerfiles/refresh

diff --git a/tests/docker/dockerfiles/refresh b/tests/docker/dockerfiles/refresh
new file mode 100755
index 0000000000..b1d99963e9
--- /dev/null
+++ b/tests/docker/dockerfiles/refresh
@@ -0,0 +1,53 @@
+#!/usr/bin/python3
+#
+# Re-generate container recipes
+#
+# This script uses the "lcitool" available from
+#
+#   https://gitlab.com/libvirt/libvirt-ci
+#
+# Copyright (c) 2020 Red Hat Inc.
+#
+# This work is licensed under the terms of the GNU GPL, version 2
+# or (at your option) any later version. See the COPYING file in
+# the top-level directory.
+
+import sys
+import os
+import subprocess
+
+if len(sys.argv) != 2:
+   print("syntax: %s PATH-TO-LCITOOL" % sys.argv[0], file=sys.stderr)
+   sys.exit(1)
+
+lcitool_path=sys.argv[1]
+
+def atomic_write(filename, content):
+   try:
+      with open(filename + ".tmp", "w") as fp:
+         print(content, file=fp, end="")
+         os.replace(filename + ".tmp", filename)
+   except Exception as ex:
+      os.unlink(filename + ".tmp")
+      raise
+
+def generate_image(filename, host, cross=None, trailer=None):
+   print("Generate %s" % filename)
+   args = [lcitool_path, "dockerfile"]
+   if cross is not None:
+      args.extend(["--cross", cross])
+   args.extend([host, "qemu"])
+   lcitool=subprocess.run(args, capture_output=True)
+
+   if lcitool.returncode != 0:
+      raise Exception("Failed to generate %s: %s" % (filename, lcitool.stderr))
+
+   content = lcitool.stdout.decode("utf8")
+   if trailer is not None:
+      content += trailer
+   atomic_write(filename, content)
+
+try:
+   pass
+except Exception as ex:
+   print(str(ex), file=sys.stderr)
-- 
2.29.2