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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 http://mozilla.org/MPL/2.0/.
import logging
import mozpack.path as mozpath
from mozbuild.base import MozbuildObject
from mozbuild.util import memoize
from taskgraph.optimize.base import OptimizationStrategy, register_strategy
from gecko_taskgraph import files_changed
logger = logging.getLogger(__name__)
@register_strategy("skip-unless-schedules")
class SkipUnlessSchedules(OptimizationStrategy):
@memoize
def scheduled_by_push(self, repository, revision):
changed_files = files_changed.get_changed_files(repository, revision)
mbo = MozbuildObject.from_environment()
# the decision task has a sparse checkout, so, mozbuild_reader will use
# a MercurialRevisionFinder with revision '.', which should be the same
# as `revision`; in other circumstances, it will use a default reader
rdr = mbo.mozbuild_reader(config_mode="empty")
components = set()
for p, m in rdr.files_info(changed_files).items():
components |= set(m["SCHEDULES"].components)
return components
def should_remove_task(self, task, params, conditions):
if params.get("pushlog_id") == -1:
return False
scheduled = self.scheduled_by_push(
params["head_repository"], params["head_rev"]
)
conditions = set(conditions)
# if *any* of the condition components are scheduled, do not optimize
if conditions & scheduled:
return False
return True
@register_strategy("skip-unless-has-relevant-tests")
class SkipUnlessHasRelevantTests(OptimizationStrategy):
"""Optimizes tasks that don't run any tests that were
in child directories of a modified file.
"""
@memoize
def get_changed_dirs(self, repo, rev):
changed = map(mozpath.dirname, files_changed.get_changed_files(repo, rev))
# Filter out empty directories (from files modified in the root).
# Otherwise all tasks would be scheduled.
return {d for d in changed if d}
def should_remove_task(self, task, params, _):
if not task.attributes.get("test_manifests"):
return True
for d in self.get_changed_dirs(params["head_repository"], params["head_rev"]):
for t in task.attributes["test_manifests"]:
if t.startswith(d):
logger.debug(
"{} runs a test path ({}) contained by a modified file ({})".format(
task.label, t, d
)
)
return False
return True
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