54 lines
1.9 KiB
Python
54 lines
1.9 KiB
Python
# (c) Copyright 2014,2015 Hewlett-Packard Development Company, L.P.
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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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import subprocess
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def execute(cmd):
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"""
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Split a command specified as function arguments into separate sub commands
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executed separately
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"""
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cmds = cmd.split('|')
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nb_process = len(cmds)
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index = 1
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process = None
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for sub_cmd in cmds:
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is_last_process = (index == nb_process)
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process = popen_call(sub_cmd.split(' '), process, is_last_process)
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index += 1
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def popen_call(sub_cmd, input, is_last_process):
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"""
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Execute a command specified as function arguments using the given input
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"""
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if not input:
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process = subprocess.Popen(sub_cmd,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE, shell=False)
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else:
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process = subprocess.Popen(sub_cmd,
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stdout=subprocess.PIPE, stdin=input.stdout,
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stderr=subprocess.PIPE, shell=False)
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input.stdout.close()
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if (is_last_process):
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process.communicate()[0]
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rc = process.returncode
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if rc != 0:
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raise Exception('Error: while executing script '
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'%s return code was %d instead of 0'
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% (''.join(sub_cmd), rc))
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return process
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