pingou / centos-git-common

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Blame centos.git.repolist.py

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#!/usr/bin/env python
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#pylint: disable=line-too-long
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#
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#  License: GPLv3
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#
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#  Initial Author: Bonnie King <bonniek@fnal.gov>
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#         Updates:
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#                  Pat Riehecky <riehecky@fnal.gov>
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#
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'''Get list of repos from pagure, to grab CentOS sources'''
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# for python3 compat
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from __future__ import unicode_literals
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from __future__ import absolute_import
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from __future__ import print_function
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import logging
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import sys
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import json
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import textwrap
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import time
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sys.setrecursionlimit(500)
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try:
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    from argparse import ArgumentParser
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except ImportError:  # pragma: no cover
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    print("Please install argparse - rpm: python-argparse", file=sys.stderr)
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    raise
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try:
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    import requests
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except ImportError:  # pragma: no cover
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    print("Please install requests - rpm: python-requests", file=sys.stderr)
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    raise
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def setup_args():
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    '''
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        Setup the argparse object.
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        Make sure all fields have defaults so we could use this as an object
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    '''
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    parser = ArgumentParser(description=textwrap.dedent(__doc__))
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    parser.add_argument('--debug', action='store_true', default=False,
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                        help='Print debugging information')
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    parser.add_argument('--hostname', default='git.centos.org',
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                        type=str, help='What host should we query?')
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    parser.add_argument('--apiver', default='0',
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                        type=str, help='What api version is the host?')
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    parser.add_argument('--namespace', default='rpms',
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                        type=str, help='What project namespace?')
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    parser.add_argument('--show-forks', action='store_true', default=False,
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                        help='Should we also show project forks?')
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    return parser
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def run_query(hostname, api, namespace, forks):
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    '''
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        Actually call the API version
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    '''
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    list_of_urls = []
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    if str(api) == '0':
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        query = 'https://{hostname}/api/0/projects?per_page=50&namespace={namespace}'.format(hostname=hostname, namespace=namespace)
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        if forks:
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            query = query + '&forks=1'
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        else:
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            query = query + '&forks=0'
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        fetch_prefix = 'https://{hostname}/'.format(hostname=hostname)
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        fetch_next_v0(query, fetch_prefix, list_of_urls)
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    else:
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        raise NotImplementedError("Unknown API version %s", api)
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    list_of_urls.sort()
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    return list_of_urls
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def fetch_next_v0(page, fetch_prefix, list_of_urls):
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    '''
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        Recursively fetch the page until we are done
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    '''
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    logging.debug('Trying to fetch %s', page)
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    try:
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        req = requests.get(page)
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    except requests.exceptions.RequestException as err_msg:
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        print(err_msg, file=sys.stderr)
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        raise
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    try:
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        message = json.loads(req.text)
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    except ValueError as err_msg:
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        print(page, file=sys.stderr)
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        print(req.text, file=sys.stderr)
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        print(err_msg, file=sys.stderr)
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        raise
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    for project in message['projects']:
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        list_of_urls.append(fetch_prefix + project['fullname'])
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    if 'next' in message['pagination']:
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        if message['pagination']['next']:
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            time.sleep(0.25) # Add a smallish delay to help with load
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            fetch_next_v0(message['pagination']['next'], fetch_prefix, list_of_urls)
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if __name__ == '__main__':
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    PARSER = setup_args()
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    ARGS = PARSER.parse_args()
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    if ARGS.debug:
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        logging.basicConfig(level=logging.DEBUG)
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    URLS = run_query(ARGS.hostname, ARGS.apiver, ARGS.namespace, ARGS.show_forks)
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    for URL in URLS:
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        print(URL)