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iceraven-browser/taskcluster/fenix_taskgraph/loader/multi_dep.py
2019-12-04 20:14:58 -08:00

88 lines
3.3 KiB
Python

# 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
import copy
from voluptuous import Required
from taskgraph.task import Task
from taskgraph.util.attributes import sorted_unique_list
from taskgraph.util.schema import Schema
from . import group_tasks
schema = Schema({
Required('primary-dependency', 'primary dependency task'): Task,
Required(
'dependent-tasks',
'dictionary of dependent tasks, keyed by kind',
): {basestring: Task},
})
def loader(kind, path, config, params, loaded_tasks):
"""
Load tasks based on the jobs dependant kinds, designed for use as
multiple-dependent needs.
Required ``group-by-fn`` is used to define how we coalesce the
multiple deps together to pass to transforms, e.g. all kinds specified get
collapsed by platform with `platform`
Optional ``primary-dependency`` (ordered list or string) is used to determine
which upstream kind to inherit attrs from. See ``get_primary_dep``.
The `only-for-build-type` kind configuration, if specified, will limit
the build types for which a job will be created.
Optional ``job-template`` kind configuration value, if specified, will be used to
pass configuration down to the specified transforms used.
"""
job_template = config.get('job-template')
for dep_tasks in group_tasks(config, loaded_tasks):
kinds = [dep.kind for dep in dep_tasks]
kinds_occurrences = {kind: kinds.count(kind) for kind in kinds}
dep_tasks_per_unique_key = {
dep.kind if kinds_occurrences[dep.kind] == 1 else dep.label: dep
for dep in dep_tasks
}
job = {'dependent-tasks': dep_tasks_per_unique_key}
job['primary-dependency'] = get_primary_dep(config, dep_tasks_per_unique_key)
if job_template:
job.update(copy.deepcopy(job_template))
yield job
def get_primary_dep(config, dep_tasks):
"""Find the dependent task to inherit attributes from.
If ``primary-dependency`` is defined in ``kind.yml`` and is a string,
then find the first dep with that task kind and return it. If it is
defined and is a list, the first kind in that list with a matching dep
is the primary dependency. If it's undefined, return the first dep.
"""
primary_dependencies = config.get('primary-dependency')
if isinstance(primary_dependencies, basestring):
primary_dependencies = [primary_dependencies]
if not primary_dependencies:
assert len(dep_tasks) == 1, "Must define a primary-dependency!"
return dep_tasks.values()[0]
primary_dep = None
for primary_kind in primary_dependencies:
for dep_kind in dep_tasks:
if dep_kind == primary_kind:
assert primary_dep is None, \
"Too many primary dependent tasks in dep_tasks: {}!".format(
[t.label for t in dep_tasks]
)
primary_dep = dep_tasks[dep_kind]
if primary_dep is None:
raise Exception("Can't find dependency of {}: {}".format(
config['primary-dependency'], config
))
return primary_dep