清华大学镜像源推荐
清华大学镜像源链接如下。
https://mirrors.tuna.tsinghua.edu.cn/
相关说明如下。
清华大学镜像源说明
清华大学镜像源说明
https://github.com/tuna/tunasync-scripts/blob/master/yum-sync.py
yum-sync.py相关信息
yum-sync.py相关信息
脚本内容如下。
#!/usr/bin/env python3
import hashlib
import traceback
import json
import os
import re
import shutil
import subprocess as sp
import tempFile
import argparse
import bz2
import gzip
import sqlite3
import traceback
import time
from email.utils import parsedate_to_datetime
import xml.etree.ElementTree as ET
from pathlib import Path
from typing import List, Dict
import requests
REPO_SIZE_FILE = os.getenv('REPO_SIZE_FILE', '')
DOWNLOAD_TIMEOUT=int(os.getenv('DOWNLOAD_TIMEOUT', '1800'))
REPO_STAT = {}
def calc_repo_size(path: Path):
dbfiles = path.glob('repodata/*primary.*')
with tempfile.NamedTemporaryFile() as tmp:
dec = None
dbfile = None
for db in dbfiles:
dbfile = db
suffixes = db.suffixes
if suffixes[-1] == '.bz2':
dec = bz2.decompress
suffixes = suffixes[:-1]
elif suffixes[-1] == '.gz':
dec = gzip.decompress
suffixes = suffixes[:-1]
elif suffixes[-1] in ('.sqlite', '.xml'):
dec = lambda x: x
if dec is None:
print(f"Failed to read from {path}: {list(dbfiles)}", flush=True)
return
with db.open('rb') as f:
tmp.write(dec(f.read()))
tmp.flush()
if suffixes[-1] == '.sqlite':
conn = sqlite3.connect(tmp.name)
c = conn.cursor()
c.execute("select sum(size_package),count(1) from packages")
size, cnt = c.fetchone()
conn.close()
elif suffixes[-1] == '.xml':
try:
tree = ET.parse(tmp.name)
root = tree.getroot()
assert root.tag.endswith('metadata')
cnt, size = 0, 0
for location in root.findall('./{http://linux.duke.edu/metadata/common}package/{http://linux.duke.edu/metadata/common}size'):
size = int(location.attrib['package'])
cnt = 1
except:
traceback.print_exc()
return
else:
print(f"Unknown suffix {suffixes}")
return
print(f"Repository {path}:")
print(f" {cnt} packages, {size} bytes in total", flush=True)
global REPO_STAT
REPO_STAT[str(path)] = (size, cnt) if cnt > 0 else (0, 0) # size can be None
def check_and_download(url: str, dst_file: Path)->int:
try:
start = time.time()
with requests.get(url, stream=True, timeout=(5, 10)) as r:
r.raise_for_status()
if 'last-modified' in r.headers:
remote_ts = parsedate_to_datetime(
r.headers['last-modified']).timestamp()
else: remote_ts = None
with dst_file.open('wb') as f:
for chunk in r.iter_content(chunk_size=1024**2):
if time.time() - start > DOWNLOAD_TIMEOUT:
raise TimeoutError("Download timeout")
if not chunk: continue # filter out keep-alive new chunks
f.write(chunk)
if remote_ts is not None:
os.utime(dst_file, (remote_ts, remote_ts))
return 0
except BaseException as e:
print(e, flush=True)
if dst_file.is_file(): dst_file.unlink()
return 1
def download_repodata(url: str, path: Path) -> int:
path = path / "repodata"
path.mkdir(exist_ok=True)
oldfiles = set(path.glob('*.*'))
newfiles = set()
if check_and_download(url "/repodata/repomd.xml", path / ".repomd.xml") != 0:
print(f"Failed to download the repomd.xml of {url}")
return 1
try:
tree = ET.parse(path / ".repomd.xml")
root = tree.getroot()
assert root.tag.endswith('repomd')
for location in root.findall('./{http://linux.duke.edu/metadata/repo}data/{http://linux.duke.edu/metadata/repo}location'):
href = location.attrib['href']
assert len(href) > 9 and href[:9] == 'repodata/'
fn = path / href[9:]
newfiles.add(fn)
if check_and_download(url '/' href, fn) != 0:
print(f"Failed to download the {href}")
return 1
except BaseException as e:
traceback.print_exc()
return 1
(path / ".repomd.xml").rename(path / "repomd.xml") # update the repomd.xml
newfiles.add(path / "repomd.xml")
for i in (oldfiles - newfiles):
print(f"Deleting old files: {i}")
i.unlink()
def check_args(prop: str, lst: List[str]):
for s in lst:
if len(s)==0 or ' ' in s:
raise ValueError(f"Invalid item in {prop}: {repr(s)}")
def substitute_vars(s: str, vardict: Dict[str, str]) -> str:
for key, val in vardict.items():
tpl = "@{" key "}"
s = s.replace(tpl, val)
return s
def main():
parser = argparse.ArgumentParser()
parser.add_argument("base_url", type=str, help="base URL")
parser.add_argument("os_version", type=str, help="e.g. 7-8")
parser.add_argument("component", type=str, help="e.g. mysql56-community,mysql57-community")
parser.add_argument("arch", type=str, help="e.g. x86_64")
parser.add_argument("repo_name", type=str, help="e.g. @{comp}-el@{os_ver}")
parser.add_argument("working_dir", type=Path, help="working directory")
parser.add_argument("--download-repodata", action='store_true',
help='download repodata files instead of generating them')
args = parser.parse_args()
if '-' in args.os_version:
dash = args.os_version.index('-')
os_list = [ str(i) for i in range(
int(args.os_version[:dash]),
1 int(args.os_version[dash 1:])) ]
else:
os_list = [args.os_version]
check_args("os_version", os_list)
component_list = args.component.split(',')
check_args("component", component_list)
arch_list = args.arch.split(',')
check_args("arch", arch_list)
failed = []
args.working_dir.mkdir(parents=True, exist_ok=True)
cache_dir = tempfile.mkdtemp()
def combination_os_comp(arch: str):
for os in os_list:
for comp in component_list:
vardict = {
'arch': arch,
'os_ver': os,
'comp': comp,
}
name = substitute_vars(args.repo_name, vardict)
url = substitute_vars(args.base_url, vardict)
try:
probe_url = url ('' if url.endswith('/') else '/') "repodata/repomd.xml"
r = requests.head(probe_url, timeout=(7,7))
if r.status_code < 400 or r.status_code == 403:
yield (name, url)
else:
print(probe_url, "->", r.status_code)
except:
traceback.print_exc()
for arch in arch_list:
dest_dirs = []
conf = tempfile.NamedTemporaryFile("w", suffix=".conf")
conf.write('''
[main]
keepcache=0
''')
for name, url in combination_os_comp(arch):
conf.write(f'''
[{name}]
name={name}
baseurl={url}
repo_gpgcheck=0
gpgcheck=0
enabled=1
''')
dst = (args.working_dir / name).absolute()
dst.mkdir(parents=True, exist_ok=True)
dest_dirs.append(dst)
conf.flush()
# sp.run(["cat", conf.name])
# sp.run(["ls", "-la", cache_dir])
if len(dest_dirs) == 0:
print("Nothing to sync", flush=True)
failed.append(('', arch))
continue
cmd_args = ["reposync", "-a", arch, "-c", conf.name, "-d", "-p", str(args.working_dir.absolute()), "-e", cache_dir]
print("Launching reposync", flush=True)
# print(cmd_args)
ret = sp.run(cmd_args)
if ret.returncode != 0:
failed.append((name, arch))
continue
for path in dest_dirs:
path.mkdir(exist_ok=True)
if args.download_repodata:
download_repodata(url, path)
else:
cmd_args = ["createrepo", "--update", "-v", "-c", cache_dir, "-o", str(path), str(path)]
# print(cmd_args)
ret = sp.run(cmd_args)
calc_repo_size(path)
if len(failed) > 0:
print("Failed YUM repos: ", failed)
else:
if len(REPO_SIZE_FILE) > 0:
with open(REPO_SIZE_FILE, "a") as fd:
total_size = sum([r[0] for r in REPO_STAT.values()])
fd.write(f" {total_size}")
if __name__ == "__main__":
main()
