ballistica/tools/efrotools/efrocache.py
2019-10-12 10:08:23 -07:00

98 lines
3.7 KiB
Python

# Copyright (c) 2011-2019 Eric Froemling
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# -----------------------------------------------------------------------------
"""A simple cloud caching system for making built binaries/assets available."""
from __future__ import annotations
import os
import subprocess
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from typing import List, Dict
def update_cache(makefile_dirs: List[str]) -> None:
"""Given a list of directories containing makefiles, update caches."""
import multiprocessing
from efrotools import run
cpus = multiprocessing.cpu_count()
fnames: List[str] = []
for path in makefile_dirs:
# First, update things..
cdp = f'cd {path} && ' if path else ''
subprocess.run(f'{cdp}make -j{cpus} efrocache_build',
shell=True,
check=True)
# Now get the list of them.
fnames += [
os.path.join(path, s) for s in subprocess.run(
f'{cdp}make efrocache_list',
shell=True,
check=True,
capture_output=True).stdout.decode().split()
]
staging_dir = 'build/efrocache'
mapping_file = 'build/efrocachemap'
run(f'rm -rf {staging_dir}')
run(f'mkdir -p {staging_dir}')
_write_cache_files(fnames, staging_dir, mapping_file)
# Push what we just wrote to the staging server
print('Pushing cache to staging...', flush=True)
run('rsync --recursive build/efrocache/'
' ubuntu@ballistica.net:files.ballistica.net/cache/ba1/')
print(f'Cache update successful!')
def _write_cache_files(fnames: List[str], staging_dir: str,
mapping_file: str) -> None:
from efrotools import run
import hashlib
import json
mapping: Dict[str, str] = {}
baseurl = 'https://files.ballistica.net/cache/ba1/'
for fname in fnames:
if ' ' in fname:
raise RuntimeError('Spaces in paths not supported.')
# Just going with ol' md5 here; we're the only ones creating these so
# security isn't a concern.
md5 = hashlib.md5()
with open(fname, 'rb') as infile:
md5.update(infile.read())
md5.update(fname.encode())
finalhash = md5.hexdigest()
hashpath = os.path.join(finalhash[:2], finalhash[2:4], finalhash[4:])
path = os.path.join(staging_dir, hashpath)
os.makedirs(os.path.dirname(path), exist_ok=True)
# Fancy pipe stuff which will give us deterministic
# tar.gz files (no embedded timestamps)
run(f'tar cf - {fname} | gzip -n > {path}')
mapping[fname] = baseurl + hashpath
with open(mapping_file, 'w') as outfile:
outfile.write(json.dumps(mapping, indent=2, sort_keys=True))