sma: loading out-of-tree plugins in sma-client

from argparse import ArgumentParser

import grpc

import google.protobuf.json_format as json_format

import importlib

import json

import logging

import os

import sys

                                             preserving_proto_field_name=True)

def load_plugins(plugins):

    for plugin in plugins:

        logging.debug(f'Loading external plugin: {plugin}')

        module = importlib.import_module(plugin)

def parse_argv():

    parser = ArgumentParser(description='Storage Management Agent client')

    parser.add_argument('--address', '-a', default='localhost',

def main(args):

    argv = parse_argv()

    logging.basicConfig(level=os.environ.get('SMA_LOGLEVEL', 'WARNING').upper())

    load_plugins(filter(None, os.environ.get('SMA_PLUGINS', '').split(':')))

    client = Client(argv.address, argv.port)

    request = json.loads(sys.stdin.read())

    result = client.call(request['method'], request.get('params', {}))