urlwait 0.4

安装

$ pip install urlwait

用法

$ urlwait --help

Usage:

    $ urlwait [SERVICE URL] [TIMEOUT]

    SERVICE URL is a connection url, e.g. a typical value for $DATABASE_URL. TIMEOUT is
    a number of seconds to try to connect to the host and port specified in the SERVICE
    URL. These values may also be specified in environment variables, but command line
    args take precedence:

        URLWAIT_VARNAME: the env var name containing the URL to check. Default DATABASE_URL.
        URLWAIT_TIMEOUT: the number of seconds to wait. Default 15.

    Returns a 0 status if the connection completed successfully before the timeout, or 1 if not.
    It is designed for use with Docker or other dev or testing environments where the connected
    services and the app are started simultaneously, but one should wait for the other.

Examples:

    The following are equivalent:

    $ urlwait redis://localhost:6379/0 20
    $ urlwait $CACHE_URL 20
    $ URLWAIT_VARNAME=CACHE_URL URLWAIT_TIMEOUT=20 urlwait

该模块也可用于您的python代码：

import os

from urlwait import wait_for_url


if wait_for_url(os.getenv('REDIS_URL')):
    # do things with the service
else:
    # service likely did not start

如果您没有服务url，但有主机和端口，则可以使用 wait_for_service(host, port, timeout)函数。

更改日志

• 0.4-2017-03-02-如果协议为sqlite，则始终返回true