[Python Subprocess Manager] Class for spawning nodejs subprocess and passing cmd, arg pairs to it and parsing the responses #py-to-js #interface

manageSubprocess.py

from subprocess import Popen, PIPE
import json


class Manager:
    def __init__(self, name):
        self.ps = Popen(
                ['nodejs', 'src/js/index.js'],
                stdin=PIPE, stdout=PIPE)
        self.name = name
        self.make(name)

    def _call(self, cmd, args):
        cmd_dict = {
            'cmd': cmd,
            'args': args
        }
        cmd_dict_str = json.dumps(cmd_dict)
        data = cmd_dict_str.encode()
        self.ps.stdin.write(data)
        self.ps.stdin.flush()
        out = self.ps.stdout.readline()
        return json.loads(out)

    def make(self, name):
        return self._call('make', name)

    def reset(self):
        return self._call('reset', None)

    def some_other_command(self, args):
        return self._call('some_other_command', args)