python-github-backup/bin/github-backup at master · epfremmer/python-github-backup · GitHub

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#!/usr/bin/env python

from __future__ import print_function

import argparse

import base64

import calendar

import codecs

import errno

import getpass

import json

import logging

import os

import re

import select

import subprocess

import sys

import time

import platform

try:

# python 3

from urllib.parse import urlparse

from urllib.parse import quote as urlquote

from urllib.parse import urlencode

from urllib.error import HTTPError, URLError

from urllib.request import urlopen

from urllib.request import Request

except ImportError:

# python 2

from urlparse import urlparse

from urllib import quote as urlquote

from urllib import urlencode

from urllib2 import HTTPError, URLError

from urllib2 import urlopen

from urllib2 import Request

from github_backup import __version__

FNULL = open(os.devnull, 'w')

def log_error(message):

if type(message) == str:

message = [message]

for msg in message:

sys.stderr.write("{0}\n".format(msg))

sys.exit(1)

def log_info(message):

if type(message) == str:

message = [message]

for msg in message:

sys.stdout.write("{0}\n".format(msg))

def logging_subprocess(popenargs,

logger,

stdout_log_level=logging.DEBUG,

stderr_log_level=logging.ERROR,

**kwargs):

"""

Variant of subprocess.call that accepts a logger instead of stdout/stderr,

and logs stdout messages via logger.debug and stderr messages via

logger.error.

"""

child = subprocess.Popen(popenargs, stdout=subprocess.PIPE,

stderr=subprocess.PIPE, **kwargs)

log_level = {child.stdout: stdout_log_level,

child.stderr: stderr_log_level}

def check_io():

ready_to_read = select.select([child.stdout, child.stderr],

[],

1000)[0]

for io in ready_to_read:

line = io.readline()

if not logger:

continue

if not (io == child.stderr and not line):

logger.log(log_level[io], line[:-1])

# keep checking stdout/stderr until the child exits

while child.poll() is None:

check_io()

check_io() # check again to catch anything after the process exits

rc = child.wait()

if rc != 0:

print('{} returned {}:'.format(popenargs[0], rc), file=sys.stderr)

print('\t', ' '.join(popenargs), file=sys.stderr)

return rc

def mkdir_p(*args):

for path in args:

try:

os.makedirs(path)

except OSError as exc: # Python >2.5

if exc.errno == errno.EEXIST and os.path.isdir(path):

pass

else:

raise

def mask_password(url, secret='*****'):

parsed = urlparse(url)

if not parsed.password:

return url

elif parsed.password == 'x-oauth-basic':

return url.replace(parsed.username, secret)

return url.replace(parsed.password, secret)

def parse_args():

parser = argparse.ArgumentParser(description='Backup a github account')

parser.add_argument('user',

metavar='USER',

type=str,

help='github username')

parser.add_argument('-u',

'--username',

dest='username',

help='username for basic auth')

parser.add_argument('-p',

'--password',

dest='password',

help='password for basic auth. '

'If a username is given but not a password, the '

'password will be prompted for.')

parser.add_argument('-t',

'--token',

dest='token',

help='personal access or OAuth token, or path to token (file://...)') # noqa

parser.add_argument('-o',

'--output-directory',

default='.',

dest='output_directory',

help='directory at which to backup the repositories')

parser.add_argument('-i',

'--incremental',

action='store_true',

dest='incremental',

help='incremental backup')

parser.add_argument('--starred',

action='store_true',

dest='include_starred',

help='include starred repositories in backup')

parser.add_argument('--watched',

action='store_true',

dest='include_watched',

help='include watched repositories in backup')

parser.add_argument('--all',

action='store_true',

dest='include_everything',

help='include everything in backup')

parser.add_argument('--issues',

action='store_true',

dest='include_issues',

help='include issues in backup')

parser.add_argument('--issue-comments',

action='store_true',

dest='include_issue_comments',

help='include issue comments in backup')

parser.add_argument('--issue-events',

action='store_true',

dest='include_issue_events',

help='include issue events in backup')

parser.add_argument('--pulls',

action='store_true',

dest='include_pulls',

help='include pull requests in backup')

parser.add_argument('--pull-comments',

action='store_true',

dest='include_pull_comments',

help='include pull request review comments in backup')

parser.add_argument('--pull-commits',

action='store_true',

dest='include_pull_commits',

help='include pull request commits in backup')

parser.add_argument('--labels',

action='store_true',

dest='include_labels',

help='include labels in backup')

parser.add_argument('--hooks',

action='store_true',

dest='include_hooks',

help='include hooks in backup (works only when authenticated)') # noqa

parser.add_argument('--milestones',

action='store_true',

dest='include_milestones',

help='include milestones in backup')

parser.add_argument('--repositories',

action='store_true',

dest='include_repository',

help='include repository clone in backup')

parser.add_argument('--bare',

action='store_true',

dest='bare_clone',

help='clone bare repositories')

parser.add_argument('--lfs',

action='store_true',

dest='lfs_clone',

help='clone LFS repositories (requires Git LFS to be installed, https://git-lfs.github.com)')

parser.add_argument('--wikis',

action='store_true',

dest='include_wiki',

help='include wiki clone in backup')

parser.add_argument('--skip-existing',

action='store_true',

dest='skip_existing',

help='skip project if a backup directory exists')

parser.add_argument('-L',

'--languages',

dest='languages',

help='only allow these languages',

nargs='*')

parser.add_argument('-N',

'--name-regex',

dest='name_regex',

help='python regex to match names against')

parser.add_argument('-H',

'--github-host',

dest='github_host',

help='GitHub Enterprise hostname')

parser.add_argument('-O',

'--organization',

action='store_true',

dest='organization',

help='whether or not this is an organization user')

parser.add_argument('-R',

'--repository',

dest='repository',

help='name of repository to limit backup to')

parser.add_argument('-P', '--private',

action='store_true',

dest='private',

help='include private repositories')

parser.add_argument('-F', '--fork',

action='store_true',

dest='fork',

help='include forked repositories')

parser.add_argument('--prefer-ssh',

action='store_true',

help='Clone repositories using SSH instead of HTTPS')

parser.add_argument('-v', '--version',

action='version',

version='%(prog)s ' + __version__)

parser.add_argument('--keychain-name',

dest='osx_keychain_item_name',

help='OSX ONLY: name field of password item in OSX keychain that holds the personal access or OAuth token')

parser.add_argument('--keychain-account',

dest='osx_keychain_item_account',

help='OSX ONLY: account field of password item in OSX keychain that holds the personal access or OAuth token')

return parser.parse_args()

def get_auth(args, encode=True):

auth = None

if args.osx_keychain_item_name:

if not args.osx_keychain_item_account:

log_error('You must specify both name and account fields for osx keychain password items')

else:

if platform.system() != 'Darwin':

log_error("Keychain arguments are only supported on Mac OSX")

try:

with open(os.devnull,'w') as devnull:

token = (subprocess.check_output([

'security','find-generic-password',

'-s',args.osx_keychain_item_name,

'-a',args.osx_keychain_item_account,

'-w' ], stderr=devnull).strip())

auth = token + ':' + 'x-oauth-basic'

except:

log_error('No password item matching the provided name and account could be found in the osx keychain.')

elif args.osx_keychain_item_account:

log_error('You must specify both name and account fields for osx keychain password items')

elif args.token:

_path_specifier = 'file://'

if args.token.startswith(_path_specifier):

args.token = open(args.token[len(_path_specifier):],

'rt').readline().strip()

auth = args.token + ':' + 'x-oauth-basic'

elif args.username:

if not args.password:

args.password = getpass.getpass()

if encode:

password = args.password

else:

password = urlquote(args.password)

auth = args.username + ':' + password

elif args.password:

log_error('You must specify a username for basic auth')

if not auth:

return None

if not encode:

return auth

return base64.b64encode(auth.encode('ascii'))

def get_github_api_host(args):

if args.github_host:

host = args.github_host + '/api/v3'

else:

host = 'api.github.com'

return host

def get_github_host(args):

if args.github_host:

host = args.github_host

else:

host = 'github.com'

return host

def get_github_repo_url(args, repository):

if args.prefer_ssh:

return repository['ssh_url']

auth = get_auth(args, False)

if auth:

repo_url = 'https://{0}@{1}/{2}/{3}.git'.format(

auth,

get_github_host(args),

args.user,

repository['name'])

else:

repo_url = repository['clone_url']

return repo_url

def retrieve_data(args, template, query_args=None, single_request=False):

auth = get_auth(args)

query_args = get_query_args(query_args)

per_page = 100

page = 0

data = []

while True:

page = page + 1

request = _construct_request(per_page, page, query_args, template, auth) # noqa

r, errors = _get_response(request, auth, template)

status_code = int(r.getcode())

if status_code != 200:

template = 'API request returned HTTP {0}: {1}'

errors.append(template.format(status_code, r.reason))

log_error(errors)

response = json.loads(r.read().decode('utf-8'))

if len(errors) == 0:

if type(response) == list:

data.extend(response)

if len(response) < per_page:

break

elif type(response) == dict and single_request:

data.append(response)

if len(errors) > 0:

log_error(errors)

if single_request:

break

return data

def get_query_args(query_args=None):

if not query_args:

query_args = {}

return query_args

def _get_response(request, auth, template):

retry_timeout = 3

errors = []

# We'll make requests in a loop so we can

# delay and retry in the case of rate-limiting

while True:

should_continue = False

try:

r = urlopen(request)

except HTTPError as exc:

errors, should_continue = _request_http_error(exc, auth, errors) # noqa

r = exc

except URLError:

should_continue = _request_url_error(template, retry_timeout)

if not should_continue:

raise

if should_continue:

continue

break

return r, errors

def _construct_request(per_page, page, query_args, template, auth):

querystring = urlencode(dict(list({

'per_page': per_page,

'page': page

}.items()) + list(query_args.items())))

request = Request(template + '?' + querystring)

if auth is not None:

request.add_header('Authorization', 'Basic '.encode('ascii') + auth)

return request

def _request_http_error(exc, auth, errors):

# HTTPError behaves like a Response so we can

# check the status code and headers to see exactly

# what failed.

should_continue = False

headers = exc.headers

limit_remaining = int(headers.get('x-ratelimit-remaining', 0))

if exc.code == 403 and limit_remaining < 1:

# The X-RateLimit-Reset header includes a

# timestamp telling us when the limit will reset

# so we can calculate how long to wait rather

# than inefficiently polling:

gm_now = calendar.timegm(time.gmtime())

reset = int(headers.get('x-ratelimit-reset', 0)) or gm_now

# We'll never sleep for less than 10 seconds:

delta = max(10, reset - gm_now)

limit = headers.get('x-ratelimit-limit')

print('Exceeded rate limit of {} requests; waiting {} seconds to reset'.format(limit, delta), # noqa

file=sys.stderr)

if auth is None:

print('Hint: Authenticate to raise your GitHub rate limit',

file=sys.stderr)

time.sleep(delta)

should_continue = True

return errors, should_continue

def _request_url_error(template, retry_timeout):

# Incase of a connection timing out, we can retry a few time

# But we won't crash and not back-up the rest now

log_info('{} timed out'.format(template))

retry_timeout -= 1

if retry_timeout >= 0:

return True

log_error('{} timed out to much, skipping!')

return False

def check_git_lfs_install():

exit_code = subprocess.call(['git', 'lfs', 'version'])

if exit_code != 0:

log_error('The argument --lfs requires you to have Git LFS installed.\nYou can get it from https://git-lfs.github.com.')

sys.exit(1)

def retrieve_repositories(args):

log_info('Retrieving repositories')

single_request = False

template = 'https://{0}/user/repos'.format(

get_github_api_host(args))

if args.organization:

template = 'https://{0}/orgs/{1}/repos'.format(

get_github_api_host(args),

args.user)

if args.repository:

single_request = True

template = 'https://{0}/repos/{1}/{2}'.format(

get_github_api_host(args),

args.user,

args.repository)

return retrieve_data(args, template, single_request=single_request)

def filter_repositories(args, unfiltered_repositories):

log_info('Filtering repositories')

repositories = []

for r in unfiltered_repositories:

if r['owner']['login'] == args.user:

repositories.append(r)

name_regex = None

if args.name_regex:

name_regex = re.compile(args.name_regex)

languages = None

if args.languages:

languages = [x.lower() for x in args.languages]

if not args.fork:

repositories = [r for r in repositories if not r['fork']]

if not args.private:

repositories = [r for r in repositories if not r['private']]

if languages:

repositories = [r for r in repositories if r['language'] and r['language'].lower() in languages] # noqa

if name_regex:

repositories = [r for r in repositories if name_regex.match(r['name'])]

return repositories

def backup_repositories(args, output_directory, repositories):

log_info('Backing up repositories')

repos_template = 'https://{0}/repos'.format(get_github_api_host(args))

if args.incremental:

last_update = max(list(repository['updated_at'] for repository in repositories) or [time.strftime('%Y-%m-%dT%H:%M:%SZ', time.localtime())]) # noqa

last_update_path = os.path.join(output_directory, 'last_update')

if os.path.exists(last_update_path):

args.since = open(last_update_path).read().strip()

else:

args.since = None

else:

args.since = None

for repository in repositories:

backup_cwd = os.path.join(output_directory, 'repositories')

repo_cwd = os.path.join(backup_cwd, repository['name'])

repo_dir = os.path.join(repo_cwd, 'repository')

repo_url = get_github_repo_url(args, repository)

if args.include_repository or args.include_everything:

fetch_repository(repository['name'],

repo_url,

repo_dir,

skip_existing=args.skip_existing,

bare_clone=args.bare_clone,

lfs_clone=arg.lfs_clone)

download_wiki = (args.include_wiki or args.include_everything)

if repository['has_wiki'] and download_wiki:

fetch_repository(repository['name'],

repo_url.replace('.git', '.wiki.git'),

os.path.join(repo_cwd, 'wiki'),

skip_existing=args.skip_existing,

bare_clone=args.bare_clone,

lfs_clone=arg.lfs_clone)

if args.include_issues or args.include_everything:

backup_issues(args, repo_cwd, repository, repos_template)

if args.include_pulls or args.include_everything:

backup_pulls(args, repo_cwd, repository, repos_template)

if args.include_milestones or args.include_everything:

backup_milestones(args, repo_cwd, repository, repos_template)

if args.include_labels or args.include_everything:

backup_labels(args, repo_cwd, repository, repos_template)

if args.include_hooks or args.include_everything:

backup_hooks(args, repo_cwd, repository, repos_template)

if args.incremental:

open(last_update_path, 'w').write(last_update)

def backup_issues(args, repo_cwd, repository, repos_template):

has_issues_dir = os.path.isdir('{0}/issues/.git'.format(repo_cwd))

if args.skip_existing and has_issues_dir:

return

log_info('Retrieving {0} issues'.format(repository['full_name']))

issue_cwd = os.path.join(repo_cwd, 'issues')

mkdir_p(repo_cwd, issue_cwd)

issues = {}

issues_skipped = 0

issues_skipped_message = ''

_issue_template = '{0}/{1}/issues'.format(repos_template,

repository['full_name'])

should_include_pulls = args.include_pulls or args.include_everything

issue_states = ['open', 'closed']

for issue_state in issue_states:

query_args = {

'filter': 'all',

'state': issue_state

}

if args.since:

query_args['since'] = args.since

_issues = retrieve_data(args,

_issue_template,

query_args=query_args)

for issue in _issues:

# skip pull requests which are also returned as issues

# if retrieving pull requests is requested as well

if 'pull_request' in issue and should_include_pulls:

issues_skipped += 1

continue

issues[issue['number']] = issue

if issues_skipped:

issues_skipped_message = ' (skipped {0} pull requests)'.format(

issues_skipped)

log_info('Saving {0} issues to disk{1}'.format(

len(list(issues.keys())), issues_skipped_message))

comments_template = _issue_template + '/{0}/comments'

events_template = _issue_template + '/{0}/events'

for number, issue in list(issues.items()):

if args.include_issue_comments or args.include_everything:

template = comments_template.format(number)

issues[number]['comment_data'] = retrieve_data(args, template)

if args.include_issue_events or args.include_everything:

template = events_template.format(number)

issues[number]['event_data'] = retrieve_data(args, template)

issue_file = '{0}/{1}.json'.format(issue_cwd, number)

with codecs.open(issue_file, 'w', encoding='utf-8') as f:

json_dump(issue, f)

def backup_pulls(args, repo_cwd, repository, repos_template):

has_pulls_dir = os.path.isdir('{0}/pulls/.git'.format(repo_cwd))

if args.skip_existing and has_pulls_dir:

return

log_info('Retrieving {0} pull requests'.format(repository['full_name'])) # noqa

pulls_cwd = os.path.join(repo_cwd, 'pulls')

mkdir_p(repo_cwd, pulls_cwd)

pulls = {}

_pulls_template = '{0}/{1}/pulls'.format(repos_template,

repository['full_name'])

pull_states = ['open', 'closed']

for pull_state in pull_states:

query_args = {

'filter': 'all',

'state': pull_state,

'sort': 'updated',

'direction': 'desc',

}

# It'd be nice to be able to apply the args.since filter here...

_pulls = retrieve_data(args,

_pulls_template,

query_args=query_args)

for pull in _pulls:

if not args.since or pull['updated_at'] >= args.since:

pulls[pull['number']] = pull

log_info('Saving {0} pull requests to disk'.format(

len(list(pulls.keys()))))

comments_template = _pulls_template + '/{0}/comments'

commits_template = _pulls_template + '/{0}/commits'

for number, pull in list(pulls.items()):

if args.include_pull_comments or args.include_everything:

template = comments_template.format(number)

pulls[number]['comment_data'] = retrieve_data(args, template)

if args.include_pull_commits or args.include_everything:

template = commits_template.format(number)

pulls[number]['commit_data'] = retrieve_data(args, template)

pull_file = '{0}/{1}.json'.format(pulls_cwd, number)

with codecs.open(pull_file, 'w', encoding='utf-8') as f:

json_dump(pull, f)

def backup_milestones(args, repo_cwd, repository, repos_template):

milestone_cwd = os.path.join(repo_cwd, 'milestones')

if args.skip_existing and os.path.isdir(milestone_cwd):

return

log_info('Retrieving {0} milestones'.format(repository['full_name']))

mkdir_p(repo_cwd, milestone_cwd)

template = '{0}/{1}/milestones'.format(repos_template,

repository['full_name'])

query_args = {

'state': 'all'

}

_milestones = retrieve_data(args, template, query_args=query_args)

milestones = {}

for milestone in _milestones:

milestones[milestone['number']] = milestone

log_info('Saving {0} milestones to disk'.format(

len(list(milestones.keys()))))

for number, milestone in list(milestones.items()):

milestone_file = '{0}/{1}.json'.format(milestone_cwd, number)

with codecs.open(milestone_file, 'w', encoding='utf-8') as f:

json_dump(milestone, f)

def backup_labels(args, repo_cwd, repository, repos_template):

label_cwd = os.path.join(repo_cwd, 'labels')

output_file = '{0}/labels.json'.format(label_cwd)

template = '{0}/{1}/labels'.format(repos_template,

repository['full_name'])

_backup_data(args,

'labels',

template,

output_file,

label_cwd)

def backup_hooks(args, repo_cwd, repository, repos_template):

auth = get_auth(args)

if not auth:

log_info("Skipping hooks since no authentication provided")

return

hook_cwd = os.path.join(repo_cwd, 'hooks')

output_file = '{0}/hooks.json'.format(hook_cwd)

template = '{0}/{1}/hooks'.format(repos_template,

repository['full_name'])

try:

_backup_data(args,

'hooks',

template,

output_file,

hook_cwd)

except SystemExit:

log_info("Unable to read hooks, skipping")

def fetch_repository(name,

remote_url,

local_dir,

skip_existing=False,

bare_clone=False,

lfs_clone=False):

if bare_clone:

if os.path.exists(local_dir):

clone_exists = subprocess.check_output(['git',

'rev-parse',

'--is-bare-repository'],

cwd=local_dir) == "true\n"

else:

clone_exists = False

else:

clone_exists = os.path.exists(os.path.join(local_dir, '.git'))

if clone_exists and skip_existing:

return

masked_remote_url = mask_password(remote_url)

initialized = subprocess.call('git ls-remote ' + remote_url,

stdout=FNULL,

stderr=FNULL,

shell=True)

if initialized == 128:

log_info("Skipping {0} ({1}) since it's not initialized".format(

name, masked_remote_url))

return

if clone_exists:

log_info('Updating {0} in {1}'.format(name, local_dir))

remotes = subprocess.check_output(['git', 'remote', 'show'],

cwd=local_dir)

remotes = [i.strip() for i in remotes.decode('utf-8').splitlines()]

if 'origin' not in remotes:

git_command = ['git', 'remote', 'rm', 'origin']

logging_subprocess(git_command, None, cwd=local_dir)

git_command = ['git', 'remote', 'add', 'origin', remote_url]

logging_subprocess(git_command, None, cwd=local_dir)

else:

git_command = ['git', 'remote', 'set-url', 'origin', remote_url]

logging_subprocess(git_command, None, cwd=local_dir)

if lfs_clone:

git_command = ['git', 'lfs', 'fetch', '--all', '--force', '--tags', '--prune']

else:

git_command = ['git', 'fetch', '--all', '--force', '--tags', '--prune']

logging_subprocess(git_command, None, cwd=local_dir)

else:

log_info('Cloning {0} repository from {1} to {2}'.format(

name,

masked_remote_url,

local_dir))

if bare_clone:

if lfs_clone:

git_command = ['git', 'lfs', 'clone', '--mirror', remote_url, local_dir]

else:

git_command = ['git', 'clone', '--mirror', remote_url, local_dir]

else:

if lfs_clone:

git_command = ['git', 'lfs', 'clone', remote_url, local_dir]

else:

git_command = ['git', 'clone', remote_url, local_dir]

logging_subprocess(git_command, None)

def backup_account(args, output_directory):

account_cwd = os.path.join(output_directory, 'account')

if args.include_starred or args.include_everything:

output_file = '{0}/starred.json'.format(account_cwd)

template = "https://{0}/users/{1}/starred"

template = template.format(get_github_api_host(args), args.user)

_backup_data(args,

'starred repositories',

template,

output_file,

account_cwd)

if args.include_watched or args.include_everything:

output_file = '{0}/watched.json'.format(account_cwd)

template = "https://{0}/users/{1}/subscriptions"

template = template.format(get_github_api_host(args), args.user)

_backup_data(args,

'watched repositories',

template,

output_file,

account_cwd)

def _backup_data(args, name, template, output_file, output_directory):

skip_existing = args.skip_existing

if not skip_existing or not os.path.exists(output_file):

log_info('Retrieving {0} {1}'.format(args.user, name))

mkdir_p(output_directory)

data = retrieve_data(args, template)

log_info('Writing {0} {1} to disk'.format(len(data), name))

with codecs.open(output_file, 'w', encoding='utf-8') as f:

json_dump(data, f)

def json_dump(data, output_file):

json.dump(data,

output_file,

ensure_ascii=False,

sort_keys=True,

indent=4,

separators=(',', ': '))

def main():

args = parse_args()

output_directory = os.path.realpath(args.output_directory)

if not os.path.isdir(output_directory):

log_info('Create output directory {0}'.format(output_directory))

mkdir_p(output_directory)

if args.lfs_clone:

check_git_lfs_install()

log_info('Backing up user {0} to {1}'.format(args.user, output_directory))

repositories = retrieve_repositories(args)

repositories = filter_repositories(args, repositories)

backup_repositories(args, output_directory, repositories)

backup_account(args, output_directory)

if __name__ == '__main__':

main()

python-github-backup/bin/github-backup at master · epfremmer/python-github-backup · GitHub

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