
# 
#   Copyright 2016 RIFT.IO Inc
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#       http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.
#

import logging
import subprocess


logger = logging.getLogger(__name__)


class ProcessError(Exception):
    pass


def command(cmd):
    logger.debug('executing: {}'.format(cmd))

    process = subprocess.Popen(
            cmd,
            shell=True,
            stdout=subprocess.PIPE,
            stderr=subprocess.PIPE,
            )

    stdout, stderr = process.communicate()
    process.wait()

    if process.returncode != 0:
        raise ProcessError(stderr.decode())

    return stdout.decode().splitlines()

