cli.py 文件源码

def main(instances, docker_bridge, docker_container, fixture_root, fixture_name):

    try:
        addrs = netifaces.ifaddresses(docker_bridge)
    except ValueError:
        click.secho('It appears {0} is not a valid newtork interface on this system.'.format(
            docker_bridge), fg='red')
        sys.exit(1)

    try:
        docker_bridge_addr = IPAddress(addrs[netifaces.AF_INET][0]['addr'])
    except IndexError:
        click.secho('It appears {0} does not have an address at this time.'.format(docker_bridge), fg='red')
        sys.exit(1)

    network = list(IPRange(docker_bridge_addr + 1,
                           docker_bridge_addr + 1 + instances - 1))

    if os.path.exists(os.path.join(fixture_root, fixture_name)):
        click.secho('[ERROR] ', fg='red', nl=False)
        click.secho('A fixture named {0} already exists.'.format(fixture_name))
        sys.exit(1)

    fixture_ctx = FixtureContext(fixture_root, fixture_name)

    for instance in range(0, len(network)):
        # TODO(sholsapp): We might want to specify different containers for
        # different instances one day.
        instance_ctx = InstanceContext(
            fixture_ctx.fixture_root, instance, network, docker_container)
        click.secho('Creating instance {0} at {1}... '.format(
            instance_ctx.instance, instance_ctx.node_root), nl=False)
        fixture_ctx.instances.append(instance_ctx)
        click.secho('[GOOD]', fg='green')
    fixture_ctx.render()