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#!/usr/bin/env python3
import hashlib
import json
import logging
import os
import random
import shutil
import subprocess as sp
import tempfile
from email.utils import parsedate_to_datetime
from pathlib import Path
from pyquery import PyQuery as pq
import requests
# DEFAULT_CONDA_REPO_BASE = "https://repo.continuum.io"
# DEFAULT_CONDA_CLOUD_BASE = "https://conda.anaconda.org"
# CONDA_REPO_BASE_URL = os.getenv("CONDA_REPO_URL", "https://repo.continuum.io")
# CONDA_CLOUD_BASE_URL = os.getenv("CONDA_COULD_URL", "https://conda.anaconda.org")
DEFAULT_CONDA_REPO_BASE = "https://mirrors.tuna.tsinghua.edu.cn/anaconda"
DEFAULT_CONDA_CLOUD_BASE = "https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud"
CONDA_REPO_BASE_URL = os.getenv("CONDA_REPO_URL", "https://mirrors.tuna.tsinghua.edu.cn/anaconda")
CONDA_CLOUD_BASE_URL = os.getenv("CONDA_COULD_URL", "https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud")
WORKING_DIR = os.getenv("TUNASYNC_WORKING_DIR")
CONDA_REPOS = ("main", "free")
# CONDA_REPOS = ("main", "free", "r", "msys2")
CONDA_ARCHES = (
"linux-64"
)
CONDA_CLOUD_REPOS = (
"conda-forge/linux-64", "conda-forge/linux-aarch64", "conda-forge/osx-64", "conda-forge/osx-arm64", "conda-forge/win-64", "conda-forge/noarch",
"msys2/linux-64", "msys2/win-64", "msys2/noarch",
"bioconda/linux-64", "bioconda/linux-aarch64", "bioconda/osx-64", "bioconda/win-64", "bioconda/noarch",
"menpo/linux-64", "menpo/osx-64", "menpo/win-64", "menpo/win-32", "menpo/noarch",
"pytorch/linux-64", "pytorch/osx-64", "pytorch/osx-arm64", "pytorch/win-64", "pytorch/win-32", "pytorch/noarch",
"pytorch-lts/linux-64", "pytorch-lts/win-64", "pytorch-lts/noarch",
"simpleitk/linux-64", "simpleitk/linux-32", "simpleitk/osx-64", "simpleitk/win-64", "simpleitk/win-32", "simpleitk/noarch",
)
EXCLUDED_PACKAGES = (
"pytorch-nightly", "pytorch-nightly-cpu", "ignite-nightly",
)
# connect and read timeout value
TIMEOUT_OPTION = (7, 10)
logging.basicConfig(
level=logging.INFO,
format="[%(asctime)s] [%(levelname)s] %(message)s",
)
def sizeof_fmt(num, suffix='iB'):
for unit in ['','K','M','G','T','P','E','Z']:
if abs(num) < 1024.0:
return "%3.2f%s%s" % (num, unit, suffix)
num /= 1024.0
return "%.2f%s%s" % (num, 'Y', suffix)
def md5_check(file: Path, md5: str = None):
# m = hashlib.md5()
# with file.open('rb') as f:
# while True:
# buf = f.read(1*1024*1024)
# if not buf:
# break
# m.update(buf)
# return m.hexdigest() == md5
return True
def sha256_check(file: Path, sha256: str = None):
# m = hashlib.sha256()
# with file.open('rb') as f:
# while True:
# buf = f.read(1*1024*1024)
# if not buf:
# break
# m.update(buf)
# return m.hexdigest() == sha256
return True
def curl_download(remote_url: str, dst_file: Path, sha256: str = None, md5: str = None):
sp.check_call([
"curl", "-o", str(dst_file),
"-sL", "--remote-time", "--show-error",
"--fail", "--retry", "10", "--speed-time", "15",
"--speed-limit", "5000", remote_url,
])
if sha256 and (not sha256_check(dst_file, sha256)):
return "SHA256 mismatch"
if md5 and (not md5_check(dst_file, md5)):
return "MD5 mismatch"
def sync_repo(repo_url: str, local_dir: Path, tmpdir: Path, delete: bool):
logging.info("Start syncing {}".format(repo_url))
local_dir.mkdir(parents=True, exist_ok=True)
repodata_url = repo_url + '/repodata.json'
bz2_repodata_url = repo_url + '/repodata.json.bz2'
# https://docs.conda.io/projects/conda-build/en/latest/release-notes.html
# "current_repodata.json" - like repodata.json, but only has the newest version of each file
current_repodata_url = repo_url + '/current_repodata.json'
tmp_repodata = tmpdir / "repodata.json"
tmp_bz2_repodata = tmpdir / "repodata.json.bz2"
tmp_current_repodata = tmpdir / 'current_repodata.json'
curl_download(repodata_url, tmp_repodata)
curl_download(bz2_repodata_url, tmp_bz2_repodata)
try:
curl_download(current_repodata_url, tmp_current_repodata)
except:
pass
with tmp_repodata.open() as f:
repodata = json.load(f)
remote_filelist = []
total_size = 0
packages = repodata['packages']
if 'packages.conda' in repodata:
packages.update(repodata['packages.conda'])
for filename, meta in packages.items():
if meta['name'] in EXCLUDED_PACKAGES:
continue
file_size = meta['size']
# prefer sha256 over md5
sha256 = None
md5 = None
if 'sha256' in meta:
sha256 = meta['sha256']
elif 'md5' in meta:
md5 = meta['md5']
total_size += file_size
pkg_url = '/'.join([repo_url, filename])
dst_file = local_dir / filename
dst_file_wip = local_dir / ('.downloading.' + filename)
remote_filelist.append(dst_file)
if dst_file.is_file():
stat = dst_file.stat()
local_filesize = stat.st_size
if file_size == local_filesize:
logging.info("Skipping {}".format(filename))
continue
dst_file.unlink()
for retry in range(3):
logging.info("Downloading {}".format(filename))
try:
err = curl_download(pkg_url, dst_file_wip, sha256=sha256, md5=md5)
if err is None:
dst_file_wip.rename(dst_file)
except sp.CalledProcessError:
err = 'CalledProcessError'
if err is None:
break
logging.error("Failed to download {}: {}".format(filename, err))
shutil.move(str(tmp_repodata), str(local_dir / "repodata.json"))
shutil.move(str(tmp_bz2_repodata), str(local_dir / "repodata.json.bz2"))
if tmp_current_repodata.is_file():
shutil.move(str(tmp_current_repodata), str(
local_dir / "current_repodata.json"))
if delete:
local_filelist = []
delete_count = 0
for i in local_dir.glob('*.tar.bz2'):
local_filelist.append(i)
for i in local_dir.glob('*.conda'):
local_filelist.append(i)
for i in set(local_filelist) - set(remote_filelist):
logging.info("Deleting {}".format(i))
i.unlink()
delete_count += 1
logging.info("{} files deleted".format(delete_count))
logging.info("{}: {} files, {} in total".format(
repodata_url, len(remote_filelist), sizeof_fmt(total_size)))
return total_size
def sync_installer(repo_url, local_dir: Path):
logging.info("Start syncing {}".format(repo_url))
local_dir.mkdir(parents=True, exist_ok=True)
full_scan = random.random() < 0.1 # Do full version check less frequently
def remote_list():
r = requests.get(repo_url, timeout=TIMEOUT_OPTION)
d = pq(r.content)
for tr in d('table').find('tr'):
tds = pq(tr).find('td')
if len(tds) != 4:
continue
fname = tds[0].find('a').text
sha256 = tds[3].text
if sha256 == '<directory>' or len(sha256) != 64:
continue
yield (fname, sha256)
for filename, sha256 in remote_list():
pkg_url = "/".join([repo_url, filename])
dst_file = local_dir / filename
dst_file_wip = local_dir / ('.downloading.' + filename)
if dst_file.is_file():
r = requests.head(pkg_url, allow_redirects=True, timeout=TIMEOUT_OPTION)
len_avail = 'content-length' in r.headers
if len_avail:
remote_filesize = int(r.headers['content-length'])
remote_date = parsedate_to_datetime(r.headers['last-modified'])
stat = dst_file.stat()
local_filesize = stat.st_size
local_mtime = stat.st_mtime
# Do content verification on ~5% of files (see issue #25)
if (not len_avail or remote_filesize == local_filesize) and remote_date.timestamp() == local_mtime and \
(random.random() < 0.95 or sha256_check(dst_file, sha256)):
logging.info("Skipping {}".format(filename))
# Stop the scanning if the most recent version is present
if not full_scan:
logging.info("Stop the scanning")
break
continue
logging.info("Removing {}".format(filename))
dst_file.unlink()
for retry in range(3):
logging.info("Downloading {}".format(filename))
err = ''
try:
err = curl_download(pkg_url, dst_file_wip, sha256=sha256)
if err is None:
dst_file_wip.rename(dst_file)
except sp.CalledProcessError:
err = 'CalledProcessError'
if err is None:
break
logging.error("Failed to download {}: {}".format(filename, err))
def main():
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("--working-dir", default=WORKING_DIR)
parser.add_argument("--delete", action='store_true',
help='delete unreferenced package files')
args = parser.parse_args()
if args.working_dir is None:
raise Exception("Working Directory is None")
working_dir = Path(args.working_dir)
size_statistics = 0
random.seed()
logging.info("Syncing installers...")
for dist in ("archive", "miniconda"):
remote_url = "{}/{}".format(CONDA_REPO_BASE_URL, dist)
local_dir = working_dir / dist
try:
sync_installer(remote_url, local_dir)
size_statistics += sum(
f.stat().st_size for f in local_dir.glob('*') if f.is_file())
except Exception:
logging.exception("Failed to sync installers of {}".format(dist))
for repo in CONDA_REPOS:
for arch in CONDA_ARCHES:
remote_url = "{}/pkgs/{}/{}".format(CONDA_REPO_BASE_URL, repo, arch)
local_dir = working_dir / "pkgs" / repo / arch
tmpdir = tempfile.mkdtemp()
try:
size_statistics += sync_repo(remote_url,
local_dir, Path(tmpdir), args.delete)
except Exception:
logging.exception("Failed to sync repo: {}/{}".format(repo, arch))
finally:
shutil.rmtree(tmpdir)
for repo in CONDA_CLOUD_REPOS:
remote_url = "{}/{}".format(CONDA_CLOUD_BASE_URL, repo)
local_dir = working_dir / "cloud" / repo
tmpdir = tempfile.mkdtemp()
try:
size_statistics += sync_repo(remote_url,
local_dir, Path(tmpdir), args.delete)
except Exception:
logging.exception("Failed to sync repo: {}".format(repo))
finally:
shutil.rmtree(tmpdir)
print("Total size is", sizeof_fmt(size_statistics, suffix=""))
if __name__ == "__main__":
main()
# vim: ts=4 sw=4 sts=4 expandtab
|
