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d202d6a967
Python tests and infra scripts will now use "python" from the virtualenv via $IMPALA_HOME/bin/impala-python. Some scripts could be simplified now that python 2.6 and a dependable set of third-party libraries are available but that is not done as part of this commit. Change-Id: If1cf96898d6350e78ea107b9026b12ba63a4162f Reviewed-on: http://gerrit.cloudera.org:8080/603 Reviewed-by: Taras Bobrovytsky <tbobrovytsky@cloudera.com> Tested-by: Internal Jenkins
42 lines
1.6 KiB
Python
42 lines
1.6 KiB
Python
# Copyright (c) 2012 Cloudera, Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Utility functions related to executing shell commands.
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import logging
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import shlex
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from subprocess import Popen, PIPE
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logging.basicConfig(level=logging.ERROR, format='%(threadName)s: %(message)s')
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LOG = logging.getLogger('shell_util')
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LOG.setLevel(level=logging.DEBUG)
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def exec_process(cmd):
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"""Executes a subprocess, waiting for completion. The process exit code, stdout and
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stderr are returned as a tuple."""
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LOG.debug('Executing: %s' % (cmd,))
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# Popen needs a list as its first parameter. The first element is the command,
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# with the rest being arguments.
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p = exec_process_async(cmd)
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stdout, stderr = p.communicate()
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rc = p.returncode
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return rc, stdout, stderr
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def exec_process_async(cmd):
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"""Executes a subprocess, returning immediately. The process object is returned for
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later retrieval of the exit code etc. """
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LOG.debug('Executing: %s' % (cmd,))
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# Popen needs a list as its first parameter. The first element is the command,
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# with the rest being arguments.
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return Popen(shlex.split(cmd), shell=False, stdout=PIPE, stderr=PIPE)
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