63 lines
1.9 KiB
Python
63 lines
1.9 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2014, John Dewey
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import logging
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import os
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import subprocess
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LOG = logging.getLogger(__name__)
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def execute(command, cwd=None, exit=0):
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"""
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Executes a command in a subprocess. Returns a tuple of
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(exitcode, out, err).
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:param command: Command string to execute.
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:param cwd: Directory to execute from.
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:param exit: The expected exit code.
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"""
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original_dir = None
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if cwd:
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original_dir = os.getcwd()
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os.chdir(cwd)
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LOG.info("Changed directory to %s", cwd)
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LOG.info("Running: '%s'", command)
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process = subprocess.Popen(command,
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cwd=os.getcwd(),
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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shell=True)
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(out, err) = process.communicate()
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exitcode = process.wait()
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LOG.info("Command exitted with rc: %s; STDOUT: %s; STDERR: %s" %
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(exitcode, out, err))
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if cwd:
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os.chdir(original_dir)
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LOG.info("Changed directory back to %s", original_dir)
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if exitcode != exit:
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raise Exception("Failed to run '%s': rc: %d, out: '%s', err: '%s'" %
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(command, exitcode, out, err))
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return out
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