mirror of
https://github.com/ceph/ceph
synced 2024-12-26 21:43:10 +00:00
131 lines
4.2 KiB
Python
131 lines
4.2 KiB
Python
import logging
|
|
import os
|
|
import shutil
|
|
import subprocess
|
|
import time
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
def enforce_repo_state(repo_url, dest_path, branch):
|
|
"""
|
|
Use git to either clone or update a given repo, forcing it to switch to the
|
|
specified branch.
|
|
|
|
:param repo_url: The full URL to the repo (not including the branch)
|
|
:param dest_path: The full path to the destination directory
|
|
:param branch: The branch.
|
|
:raises: BranchNotFoundError if the branch is not found;
|
|
RuntimeError for other errors
|
|
"""
|
|
validate_branch(branch)
|
|
try:
|
|
if not os.path.isdir(dest_path):
|
|
clone_repo(repo_url, dest_path, branch)
|
|
elif time.time() - os.stat('/etc/passwd').st_mtime > 60:
|
|
# only do this at most once per minute
|
|
fetch_branch(dest_path, branch)
|
|
out = subprocess.check_output(('touch', dest_path))
|
|
if out:
|
|
log.info(out)
|
|
else:
|
|
log.info("%s was just updated; assuming it is current", branch)
|
|
|
|
reset_repo(repo_url, dest_path, branch)
|
|
except BranchNotFoundError:
|
|
shutil.rmtree(dest_path, ignore_errors=True)
|
|
raise
|
|
|
|
|
|
def clone_repo(repo_url, dest_path, branch):
|
|
"""
|
|
Clone a repo into a path
|
|
|
|
:param repo_url: The full URL to the repo (not including the branch)
|
|
:param dest_path: The full path to the destination directory
|
|
:param branch: The branch.
|
|
:raises: BranchNotFoundError if the branch is not found;
|
|
RuntimeError for other errors
|
|
"""
|
|
validate_branch(branch)
|
|
log.info("Cloning %s %s from upstream", repo_url, branch)
|
|
proc = subprocess.Popen(
|
|
('git', 'clone', '--branch', branch, repo_url, dest_path),
|
|
cwd=os.path.dirname(dest_path),
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.STDOUT)
|
|
if proc.wait() != 0:
|
|
not_found_str = "Remote branch %s not found" % branch
|
|
out = proc.stdout.read()
|
|
log.error(out)
|
|
if not_found_str in out:
|
|
raise BranchNotFoundError(branch, repo_url)
|
|
else:
|
|
raise RuntimeError("git clone failed!")
|
|
|
|
|
|
def fetch_branch(dest_path, branch):
|
|
"""
|
|
Call "git fetch -p origin <branch>"
|
|
|
|
:param dest_path: The full path to the destination directory
|
|
:param branch: The branch.
|
|
:raises: BranchNotFoundError if the branch is not found;
|
|
RuntimeError for other errors
|
|
"""
|
|
validate_branch(branch)
|
|
log.info("Fetching %s from upstream", branch)
|
|
proc = subprocess.Popen(
|
|
('git', 'fetch', '-p', 'origin', branch),
|
|
cwd=dest_path,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.STDOUT)
|
|
if proc.wait() != 0:
|
|
not_found_str = "fatal: Couldn't find remote ref %s" % branch
|
|
out = proc.stdout.read()
|
|
log.error(out)
|
|
if not_found_str in out:
|
|
raise BranchNotFoundError(branch)
|
|
else:
|
|
raise RuntimeError("git fetch failed!")
|
|
|
|
|
|
def reset_repo(repo_url, dest_path, branch):
|
|
"""
|
|
|
|
:param repo_url: The full URL to the repo (not including the branch)
|
|
:param dest_path: The full path to the destination directory
|
|
:param branch: The branch.
|
|
:raises: BranchNotFoundError if the branch is not found;
|
|
RuntimeError for other errors
|
|
"""
|
|
validate_branch(branch)
|
|
# This try/except block will notice if the requested branch doesn't
|
|
# exist, whether it was cloned or fetched.
|
|
try:
|
|
subprocess.check_output(
|
|
('git', 'reset', '--hard', 'origin/%s' % branch),
|
|
cwd=dest_path,
|
|
)
|
|
except subprocess.CalledProcessError:
|
|
raise BranchNotFoundError(branch, repo_url)
|
|
|
|
|
|
class BranchNotFoundError(ValueError):
|
|
def __init__(self, branch, repo=None):
|
|
self.branch = branch
|
|
self.repo = repo
|
|
|
|
def __str__(self):
|
|
if self.repo:
|
|
repo_str = " in repo: %s" % self.repo
|
|
else:
|
|
repo_str = ""
|
|
return "Branch {branch} not found{repo_str}!".format(
|
|
branch=self.branch, repo_str=repo_str)
|
|
|
|
|
|
def validate_branch(branch):
|
|
if ' ' in branch:
|
|
raise ValueError("Illegal branch name: '%s'" % branch)
|