forked from mirrors/gecko-dev
205 lines
6.7 KiB
Python
205 lines
6.7 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import json
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import os
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import re
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import sys
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from collections import defaultdict
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import mozpack.path as mozpath
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import taskgraph
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from mach.util import get_state_dir
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from mozbuild.base import MozbuildObject
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from mozpack.files import FileFinder
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from moztest.resolve import TestManifestLoader, TestResolver, get_suite_definition
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from taskgraph.generator import TaskGraphGenerator
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from taskgraph.parameters import ParameterMismatch, parameters_loader
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from taskgraph.taskgraph import TaskGraph
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here = os.path.abspath(os.path.dirname(__file__))
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build = MozbuildObject.from_environment(cwd=here)
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PARAMETER_MISMATCH = """
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ERROR - The parameters being used to generate tasks differ from those expected
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by your working copy:
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{}
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To fix this, either rebase onto the latest mozilla-central or pass in
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-p/--parameters. For more information on how to define parameters, see:
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https://firefox-source-docs.mozilla.org/taskcluster/taskcluster/mach.html#parameters
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"""
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def invalidate(cache):
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try:
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cmod = os.path.getmtime(cache)
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except OSError as e:
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# File does not exist. We catch OSError rather than use `isfile`
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# because the recommended watchman hook could possibly invalidate the
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# cache in-between the check to `isfile` and the call to `getmtime`
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# below.
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if e.errno == 2:
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return
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raise
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tc_dir = os.path.join(build.topsrcdir, "taskcluster")
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tmod = max(os.path.getmtime(os.path.join(tc_dir, p)) for p, _ in FileFinder(tc_dir))
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if tmod > cmod:
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os.remove(cache)
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def cache_key(attr, params, disable_target_task_filter):
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key = attr
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if params and params["project"] not in ("autoland", "mozilla-central"):
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key += f"-{params['project']}"
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if disable_target_task_filter and "full" not in attr:
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key += "-uncommon"
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return key
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def generate_tasks(params=None, full=False, disable_target_task_filter=False):
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attr = "full_task_set" if full else "target_task_set"
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target_tasks_method = (
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"try_select_tasks"
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if not disable_target_task_filter
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else "try_select_tasks_uncommon"
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)
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params = parameters_loader(
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params,
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strict=False,
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overrides={
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"try_mode": "try_select",
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"target_tasks_method": target_tasks_method,
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},
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)
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root = os.path.join(build.topsrcdir, "taskcluster", "ci")
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taskgraph.fast = True
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generator = TaskGraphGenerator(root_dir=root, parameters=params)
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def add_chunk_patterns(tg):
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for task_name, task in tg.tasks.items():
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chunks = task.task.get("extra", {}).get("chunks", {})
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if isinstance(chunks, int):
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task.chunk_pattern = "{}-*/{}".format(
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"-".join(task_name.split("-")[:-1]), chunks
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)
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else:
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assert isinstance(chunks, dict)
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if chunks.get("total", 1) == 1:
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task.chunk_pattern = task_name
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else:
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task.chunk_pattern = "{}-*".format(
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"-".join(task_name.split("-")[:-1])
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)
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return tg
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cache_dir = os.path.join(
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get_state_dir(specific_to_topsrcdir=True), "cache", "taskgraph"
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)
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key = cache_key(attr, generator.parameters, disable_target_task_filter)
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cache = os.path.join(cache_dir, key)
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invalidate(cache)
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if os.path.isfile(cache):
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with open(cache) as fh:
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return add_chunk_patterns(TaskGraph.from_json(json.load(fh))[1])
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if not os.path.isdir(cache_dir):
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os.makedirs(cache_dir)
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print("Task configuration changed, generating {}".format(attr.replace("_", " ")))
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cwd = os.getcwd()
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os.chdir(build.topsrcdir)
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def generate(attr):
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try:
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tg = getattr(generator, attr)
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except ParameterMismatch as e:
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print(PARAMETER_MISMATCH.format(e.args[0]))
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sys.exit(1)
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# write cache
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key = cache_key(attr, generator.parameters, disable_target_task_filter)
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with open(os.path.join(cache_dir, key), "w") as fh:
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json.dump(tg.to_json(), fh)
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return add_chunk_patterns(tg)
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# Cache both full_task_set and target_task_set regardless of whether or not
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# --full was requested. Caching is cheap and can potentially save a lot of
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# time.
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tg_full = generate("full_task_set")
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tg_target = generate("target_task_set")
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# discard results from these, we only need cache.
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if full:
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generate("full_task_graph")
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generate("target_task_graph")
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os.chdir(cwd)
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if full:
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return tg_full
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return tg_target
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def filter_tasks_by_paths(tasks, paths):
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resolver = TestResolver.from_environment(cwd=here, loader_cls=TestManifestLoader)
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run_suites, run_tests = resolver.resolve_metadata(paths)
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flavors = {(t["flavor"], t.get("subsuite")) for t in run_tests}
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task_regexes = set()
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for flavor, subsuite in flavors:
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_, suite = get_suite_definition(flavor, subsuite, strict=True)
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if "task_regex" not in suite:
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print(
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"warning: no tasks could be resolved from flavor '{}'{}".format(
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flavor, " and subsuite '{}'".format(subsuite) if subsuite else ""
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)
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)
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continue
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task_regexes.update(suite["task_regex"])
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def match_task(task):
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return any(re.search(pattern, task) for pattern in task_regexes)
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return {
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task_name: task for task_name, task in tasks.items() if match_task(task_name)
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}
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def resolve_tests_by_suite(paths):
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resolver = TestResolver.from_environment(cwd=here, loader_cls=TestManifestLoader)
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_, run_tests = resolver.resolve_metadata(paths)
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suite_to_tests = defaultdict(list)
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# A dictionary containing all the input paths that we haven't yet
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# assigned to a specific test flavor.
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remaining_paths_by_suite = defaultdict(lambda: set(paths))
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for test in run_tests:
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key, _ = get_suite_definition(test["flavor"], test.get("subsuite"), strict=True)
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test_path = test.get("srcdir_relpath")
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if test_path is None:
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continue
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found_path = None
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manifest_relpath = None
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if "manifest_relpath" in test:
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manifest_relpath = mozpath.normpath(test["manifest_relpath"])
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for path in remaining_paths_by_suite[key]:
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if test_path.startswith(path) or manifest_relpath == path:
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found_path = path
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break
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if found_path:
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suite_to_tests[key].append(found_path)
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remaining_paths_by_suite[key].remove(found_path)
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return suite_to_tests
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