api.py 文件源码

def api():
    # Compat with previous pbr script
    try:
        double_dash = sys.argv.index("--")
    except ValueError:
        double_dash = None
    else:
        sys.argv.pop(double_dash)

    conf = cfg.ConfigOpts()
    for opt in opts.API_OPTS:
        # NOTE(jd) Register the API options without a default, so they are only
        # used to override the one in the config file
        c = copy.copy(opt)
        c.default = None
        conf.register_cli_opt(c)
    conf = prepare_service(conf)

    if double_dash is not None:
        # NOTE(jd) Wait to this stage to log so we're sure the logging system
        # is in place
        LOG.warning(
            "No need to pass `--' in gnocchi-api command line anymore, "
            "please remove")

    uwsgi = spawn.find_executable("uwsgi")
    if not uwsgi:
        LOG.error("Unable to find `uwsgi'.\n"
                  "Be sure it is installed and in $PATH.")
        return 1

    workers = utils.get_default_workers()

    args = [
        "--if-not-plugin", "python", "--plugin", "python", "--endif",
        "--http-socket", "%s:%d" % (conf.host or conf.api.host,
                                    conf.port or conf.api.port),
        "--master",
        "--enable-threads",
        "--die-on-term",
        # NOTE(jd) See https://github.com/gnocchixyz/gnocchi/issues/156
        "--add-header", "Connection: close",
        "--processes", str(math.floor(workers * 1.5)),
        "--threads", str(workers),
        "--lazy-apps",
        "--chdir", "/",
        "--wsgi", "gnocchi.rest.wsgi",
        "--pyargv", " ".join(sys.argv[1:]),
    ]

    virtual_env = os.getenv("VIRTUAL_ENV")
    if virtual_env is not None:
        args.extend(["-H", os.getenv("VIRTUAL_ENV", ".")])

    return os.execl(uwsgi, uwsgi, *args)