github_auth.py 文件源码

def get_installation_token(installation):
    """
    Get access token for installation
    """

    now = datetime.datetime.now().timestamp()

    if installation_token_expiry[installation] is None or now + 60 > installation_token_expiry[installation]:

        # FIXME: if .netrc file is present, Authorization header will get
        # overwritten, so need to figure out how to ignore that file.
        if netrc_exists():
            raise Exception("Authentication does not work properly if a ~/.netrc "
                            "file exists. Rename that file temporarily and try again.")

        headers = {}
        headers['Authorization'] = 'Bearer {0}'.format(get_json_web_token())
        headers['Accept'] = 'application/vnd.github.machine-man-preview+json'

        url = 'https://api.github.com/installations/{0}/access_tokens'.format(installation)

        req = requests.post(url, headers=headers)
        resp = req.json()

        if not req.ok:
            if 'message' in resp:
                raise Exception(resp['message'])
            else:
                raise Exception("An error occurred when requesting token")

        installation_token[installation] = resp['token']
        installation_token_expiry[installation] = dateutil.parser.parse(resp['expires_at']).timestamp()

    return installation_token[installation]