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# -*- coding: utf-8 -*-
# Copyright 2020 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Module for manipulating llvm-project-copy. Generally intended for tests."""
import datetime
import os
import subprocess
import sys
import get_llvm_hash
import git_llvm_rev
def get_location() -> str:
"""Gets the absolute path for llvm-project-copy."""
my_dir = os.path.dirname(os.path.abspath(__file__))
return os.path.join(my_dir, "llvm-project-copy")
def ensure_up_to_date():
"""Ensures that llvm-project-copy is checked out and semi-up-to-date."""
checkout = get_location()
if not os.path.isdir(checkout):
print(
"No llvm-project exists locally; syncing it. This takes a while.",
file=sys.stderr,
)
actual_checkout = get_llvm_hash.GetAndUpdateLLVMProjectInLLVMTools()
assert checkout == actual_checkout, "%s != %s" % (
actual_checkout,
checkout,
)
commit_timestamp = subprocess.check_output(
[
"git",
"log",
"-n1",
"--format=%ct",
"origin/" + git_llvm_rev.MAIN_BRANCH,
],
cwd=checkout,
encoding="utf-8",
)
commit_time = datetime.datetime.fromtimestamp(int(commit_timestamp.strip()))
now = datetime.datetime.now()
time_since_last_commit = now - commit_time
# Arbitrary, but if it's been more than 2d since we've seen a commit, it's
# probably best to bring us up-to-date.
if time_since_last_commit <= datetime.timedelta(days=2):
return
print(
"%d days have elapsed since the last commit to %s; auto-syncing"
% (time_since_last_commit.days, checkout),
file=sys.stderr,
)
result = subprocess.run(
["git", "fetch", "origin"], check=False, cwd=checkout
)
if result.returncode:
print(
"Sync failed somehow; hoping that things are fresh enough, then...",
file=sys.stderr,
)
|
