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# 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
from taskgraph.parameters import Parameters
from gecko_taskgraph.actions.registry import register_callback_action
from gecko_taskgraph.decision import taskgraph_decision
from gecko_taskgraph.util.attributes import RELEASE_PROMOTION_PROJECTS
def is_release_promotion_available(parameters):
return parameters["project"] in RELEASE_PROMOTION_PROJECTS
title="Merge Day Automation",
description="Merge repository branches.",
schema=lambda graph_config: {
"type": "object",
"properties": {
"force-dry-run": {
"type": "boolean",
"description": "Override other options and do not push changes",
"default": True,
"push": {
"type": "boolean",
"description": "Push changes using to_repo and to_branch",
"default": False,
"behavior": {
"type": "string",
"description": "The type of release promotion to perform.",
"enum": sorted(graph_config["merge-automation"]["behaviors"].keys()),
"default": "central-to-beta",
"from-repo": {
"type": "string",
"description": "The URI of the source repository",
"to-repo": {
"type": "string",
"description": "The push URI of the target repository",
"from-branch": {
"type": "string",
"description": "The fx head of the source, such as central",
"to-branch": {
"type": "string",
"description": "The fx head of the target, such as beta",
"ssh-user-alias": {
"type": "string",
"description": "The alias of an ssh account to use when pushing changes.",
"fetch-version-from": {
"type": "string",
"description": "Path to file used when querying current version.",
"required": ["behavior"],
def merge_automation_action(parameters, graph_config, input, task_group_id, task_id):
# make parameters read-write
parameters = dict(parameters)
parameters["target_tasks_method"] = "merge_automation"
parameters["merge_config"] = {
"force-dry-run": input.get("force-dry-run", False),
"behavior": input["behavior"],
for field in [
if input.get(field):
parameters["merge_config"][field] = input[field]
parameters["tasks_for"] = "action"
# make parameters read-only
parameters = Parameters(**parameters)
taskgraph_decision({"root": graph_config.root_dir}, parameters=parameters)