1 files changed, 37 insertions, 0 deletions
diff --git a/taskcluster/taskgraph/transforms/release_snap_repackage.py b/taskcluster/taskgraph/transforms/release_snap_repackage.py
new file mode 100644
index 0000000000..78266a89ff
--- /dev/null
+++ b/taskcluster/taskgraph/transforms/release_snap_repackage.py
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+from taskgraph.transforms.base import TransformSequence
+from taskgraph.util.scriptworker import get_release_config
+from taskgraph.util.schema import resolve_keyed_by
+
+
+transforms = TransformSequence()
+
+
+@transforms.add
+def format(config, tasks):
+    """Apply format substitution to worker.env and worker.command."""
+
+    format_params = {
+        "release_config": get_release_config(config),
+        "config_params": config.params,
+    }
+
+    for task in tasks:
+        format_params["task"] = task
+
+        command = task.get("worker", {}).get("command", [])
+        task["worker"]["command"] = [x.format(**format_params) for x in command]
+
+        env = task.get("worker", {}).get("env", {})
+        for k in env.keys():
+            resolve_keyed_by(
+                env, k, "snap envs", **{"release-level": config.params.release_level()}
+            )
+            task["worker"]["env"][k] = env[k].format(**format_params)
+
+        yield task