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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/.
from __future__ import absolute_import, print_function, unicode_literals
import json
import os
import re
import sys
from collections import defaultdict
from mozboot.util import get_state_dir
from mozbuild.base import MozbuildObject
from mozpack.files import FileFinder
from moztest.resolve import TestResolver, get_suite_definition
import taskgraph
from taskgraph.generator import TaskGraphGenerator
from taskgraph.parameters import (
ParameterMismatch,
parameters_loader,
)
from taskgraph.taskgraph import TaskGraph
here = os.path.abspath(os.path.dirname(__file__))
build = MozbuildObject.from_environment(cwd=here)
PARAMETER_MISMATCH = """
ERROR - The parameters being used to generate tasks differ from those expected
by your working copy:
{}
To fix this, either rebase onto the latest mozilla-central or pass in
-p/--parameters. For more information on how to define parameters, see:
"""
def invalidate(cache):
try:
cmod = os.path.getmtime(cache)
except OSError as e:
# File does not exist. We catch OSError rather than use `isfile`
# because the recommended watchman hook could possibly invalidate the
# cache in-between the check to `isfile` and the call to `getmtime`
# below.
if e.errno == 2:
return
raise
tc_dir = os.path.join(build.topsrcdir, 'taskcluster')
tmod = max(os.path.getmtime(os.path.join(tc_dir, p)) for p, _ in FileFinder(tc_dir))
if tmod > cmod:
os.remove(cache)
def generate_tasks(params=None, full=False):
cache_dir = os.path.join(get_state_dir(srcdir=True), 'cache', 'taskgraph')
attr = 'full_task_set' if full else 'target_task_set'
cache = os.path.join(cache_dir, attr)
invalidate(cache)
if os.path.isfile(cache):
with open(cache, 'r') as fh:
return TaskGraph.from_json(json.load(fh))[1]
if not os.path.isdir(cache_dir):
os.makedirs(cache_dir)
print("Task configuration changed, generating {}".format(attr.replace('_', ' ')))
taskgraph.fast = True
cwd = os.getcwd()
os.chdir(build.topsrcdir)
root = os.path.join(build.topsrcdir, 'taskcluster', 'ci')
params = parameters_loader(params, strict=False, overrides={'try_mode': 'try_select'})
# Cache both full_task_set and target_task_set regardless of whether or not
# --full was requested. Caching is cheap and can potentially save a lot of
# time.
generator = TaskGraphGenerator(root_dir=root, parameters=params)
def generate(attr):
try:
tg = getattr(generator, attr)
except ParameterMismatch as e:
print(PARAMETER_MISMATCH.format(e.args[0]))
sys.exit(1)
# write cache
with open(os.path.join(cache_dir, attr), 'w') as fh:
json.dump(tg.to_json(), fh)
return tg
tg_full = generate('full_task_set')
tg_target = generate('target_task_set')
# discard results from these, we only need cache.
if full:
generate('full_task_graph')
generate('target_task_graph')
os.chdir(cwd)
if full:
return tg_full
return tg_target
def filter_tasks_by_paths(tasks, paths):
resolver = TestResolver.from_environment(cwd=here)
run_suites, run_tests = resolver.resolve_metadata(paths)
flavors = set([(t['flavor'], t.get('subsuite')) for t in run_tests])
task_regexes = set()
for flavor, subsuite in flavors:
_, suite = get_suite_definition(flavor, subsuite, strict=True)
if 'task_regex' not in suite:
print("warning: no tasks could be resolved from flavor '{}'{}".format(
flavor, " and subsuite '{}'".format(subsuite) if subsuite else ""))
continue
task_regexes.update(suite['task_regex'])
def match_task(task):
return any(re.search(pattern, task) for pattern in task_regexes)
return filter(match_task, tasks)
def resolve_tests_by_suite(paths):
resolver = TestResolver.from_environment(cwd=here)
_, run_tests = resolver.resolve_metadata(paths)
suite_to_tests = defaultdict(list)
# A dictionary containing all the input paths that we haven't yet
# assigned to a specific test flavor.
remaining_paths_by_suite = defaultdict(lambda: set(paths))
for test in run_tests:
key, _ = get_suite_definition(test['flavor'], test.get('subsuite'), strict=True)
test_path = test.get('srcdir_relpath')
if test_path is None:
continue
found_path = None
for path in remaining_paths_by_suite[key]:
if test_path.startswith(path):
found_path = path
break
if found_path:
suite_to_tests[key].append(found_path)
remaining_paths_by_suite[key].remove(found_path)
return suite_to_tests