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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
"""
Tools for interacting with existing taskgraphs.
"""
from taskgraph.util.taskcluster import find_task_id, get_artifact
def find_decision_task(parameters, graph_config):
"""Given the parameters for this action, find the taskId of the decision
task"""
head_rev_param = "{}head_rev".format(graph_config["project-repo-param-prefix"])
return find_task_id(
"{}.v2.{}.revision.{}.taskgraph.decision".format(
graph_config["trust-domain"],
parameters["project"],
parameters[head_rev_param],
)
)
def find_existing_tasks(previous_graph_ids):
existing_tasks = {}
for previous_graph_id in previous_graph_ids:
label_to_taskid = get_artifact(previous_graph_id, "public/label-to-taskid.json")
existing_tasks.update(label_to_taskid)
return existing_tasks
def find_existing_tasks_from_previous_kinds(
full_task_graph, previous_graph_ids, rebuild_kinds
):
"""Given a list of previous decision/action taskIds and kinds to ignore
from the previous graphs, return a dictionary of labels-to-taskids to use
as ``existing_tasks`` in the optimization step."""
existing_tasks = find_existing_tasks(previous_graph_ids)
kind_labels = {
t.label
for t in full_task_graph.tasks.values()
if t.attributes["kind"] not in rebuild_kinds
}
return {
label: taskid
for (label, taskid) in existing_tasks.items()
if label in kind_labels
}