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#!/usr/bin/env python
#
# jose.lausuch@ericsson.com
# valentin.boucher@orange.com
# grakiss.wanglei@huawei.com
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
#
import sys
import time
import subprocess
from collections import Mapping, Set, Sequence
def exec_log(verbose, logger, msg, level, flush=False):
if not verbose:
return
if logger:
if level == 'info':
logger.info(msg)
elif level == 'error':
logger.error(msg)
elif level == 'debug':
logger.debug(msg)
else:
pass
else:
print(msg)
if flush:
sys.stdout.flush()
def exec_cmd(cmd, logger=None, exit_on_error=False, info=False,
err_msg="", verbose=True):
msg_err = ("The command '%s' failed." % cmd) if not err_msg else err_msg
msg_exec = ("Executing command: '%s'" % cmd)
level = 'info' if info else 'debug'
exec_log(verbose, logger, msg_exec, level)
p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
seconds = 0
while p.poll() is None:
seconds += 1
if seconds > 3:
show_progress_bar(seconds)
time.sleep(1)
(stdout, stderr) = p.communicate()
if p.returncode == 0:
for line in stdout.strip().splitlines():
exec_log(verbose, logger, line, level, True)
else:
exec_log(verbose, logger, stderr, 'error')
exec_log(verbose, logger, msg_err, 'error')
if exit_on_error:
sys.exit(1)
return p.returncode, stdout.strip()
# walkthrough the object, yield path and value
# dual python 2/3 compatability, inspired by the "six" library
string_types = (str, unicode) if str is bytes else (str, bytes)
# iteritems = lambda mapping: getattr(mapping, 'iteritems', mapping.items)()
def iteritems(mapping):
return getattr(mapping, 'iteritems', mapping.items)()
def objwalk(obj, path=(), memo=None):
if memo is None:
memo = set()
iterator = None
if isinstance(obj, Mapping):
iterator = iteritems
elif isinstance(obj, (Sequence, Set)) and not isinstance(obj,
string_types):
iterator = enumerate
if iterator:
if id(obj) not in memo:
memo.add(id(obj))
for path_component, value in iterator(obj):
for result in objwalk(value, path + (path_component,), memo):
yield result
memo.remove(id(obj))
else:
yield path, obj
def get_obj_by_path(obj, dst_path):
for path, obj in objwalk(obj):
if path == dst_path:
return obj
def show_progress_bar(length):
max_len = 50
length %= max_len
sys.stdout.write('Running ' + ' ' * max_len + '\r')
sys.stdout.flush()
sys.stdout.write('Running ' + '=' * length + '>' + '\r')
sys.stdout.flush()
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