root / image_creator / util.py @ a9c9d939
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1 | ae48a082 | Nikos Skalkotos | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | ae48a082 | Nikos Skalkotos | #
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3 | ae48a082 | Nikos Skalkotos | # Redistribution and use in source and binary forms, with or
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4 | ae48a082 | Nikos Skalkotos | # without modification, are permitted provided that the following
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5 | ae48a082 | Nikos Skalkotos | # conditions are met:
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6 | ae48a082 | Nikos Skalkotos | #
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7 | ae48a082 | Nikos Skalkotos | # 1. Redistributions of source code must retain the above
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8 | ae48a082 | Nikos Skalkotos | # copyright notice, this list of conditions and the following
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9 | ae48a082 | Nikos Skalkotos | # disclaimer.
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10 | ae48a082 | Nikos Skalkotos | #
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11 | ae48a082 | Nikos Skalkotos | # 2. Redistributions in binary form must reproduce the above
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12 | ae48a082 | Nikos Skalkotos | # copyright notice, this list of conditions and the following
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13 | ae48a082 | Nikos Skalkotos | # disclaimer in the documentation and/or other materials
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14 | ae48a082 | Nikos Skalkotos | # provided with the distribution.
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15 | ae48a082 | Nikos Skalkotos | #
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16 | ae48a082 | Nikos Skalkotos | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | ae48a082 | Nikos Skalkotos | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | ae48a082 | Nikos Skalkotos | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | ae48a082 | Nikos Skalkotos | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | ae48a082 | Nikos Skalkotos | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | ae48a082 | Nikos Skalkotos | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | ae48a082 | Nikos Skalkotos | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | ae48a082 | Nikos Skalkotos | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | ae48a082 | Nikos Skalkotos | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | ae48a082 | Nikos Skalkotos | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | ae48a082 | Nikos Skalkotos | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | ae48a082 | Nikos Skalkotos | # POSSIBILITY OF SUCH DAMAGE.
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28 | ae48a082 | Nikos Skalkotos | #
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29 | ae48a082 | Nikos Skalkotos | # The views and conclusions contained in the software and
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30 | ae48a082 | Nikos Skalkotos | # documentation are those of the authors and should not be
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31 | ae48a082 | Nikos Skalkotos | # interpreted as representing official policies, either expressed
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32 | ae48a082 | Nikos Skalkotos | # or implied, of GRNET S.A.
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33 | 3ccb2618 | Nikos Skalkotos | |
34 | 979096dd | Nikos Skalkotos | import sys |
35 | 3ccb2618 | Nikos Skalkotos | import pbs |
36 | 979096dd | Nikos Skalkotos | from clint.textui import colored, progress as uiprogress |
37 | 979096dd | Nikos Skalkotos | |
38 | 979096dd | Nikos Skalkotos | silent = False
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39 | 3ccb2618 | Nikos Skalkotos | |
40 | ae48a082 | Nikos Skalkotos | |
41 | 3ccb2618 | Nikos Skalkotos | def get_command(command): |
42 | 3ccb2618 | Nikos Skalkotos | def find_sbin_command(command, exception): |
43 | 3ccb2618 | Nikos Skalkotos | search_paths = ['/usr/local/sbin', '/usr/sbin', '/sbin'] |
44 | 3ccb2618 | Nikos Skalkotos | for fullpath in map(lambda x: "%s/%s" % (x, command), search_paths): |
45 | 3ccb2618 | Nikos Skalkotos | if os.path.exists(fullpath) and os.access(fullpath, os.X_OK): |
46 | 3ccb2618 | Nikos Skalkotos | return pbs.Command(fullpath)
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47 | 3ccb2618 | Nikos Skalkotos | raise exception
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48 | 3ccb2618 | Nikos Skalkotos | |
49 | 3ccb2618 | Nikos Skalkotos | try:
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50 | 3ccb2618 | Nikos Skalkotos | return pbs.__getattr__(command)
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51 | 3ccb2618 | Nikos Skalkotos | except pbs.CommadNotFount as e: |
52 | 3ccb2618 | Nikos Skalkotos | return find_sbin_command(command, e)
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53 | 22a6d232 | Nikos Skalkotos | |
54 | 22a6d232 | Nikos Skalkotos | |
55 | e2cf65d3 | Nikos Skalkotos | def error(msg, new_line=True): |
56 | 979096dd | Nikos Skalkotos | nl = "\n" if new_line else '' |
57 | 979096dd | Nikos Skalkotos | sys.stderr.write('Error: %s' % msg + nl)
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58 | 22a6d232 | Nikos Skalkotos | |
59 | 22a6d232 | Nikos Skalkotos | |
60 | e2cf65d3 | Nikos Skalkotos | def warn(msg, new_line=True): |
61 | 979096dd | Nikos Skalkotos | if not silent: |
62 | 979096dd | Nikos Skalkotos | nl = "\n" if new_line else '' |
63 | 979096dd | Nikos Skalkotos | sys.stderr.write(colored.yellow("Warning: %s" % msg) + nl)
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64 | 22a6d232 | Nikos Skalkotos | |
65 | 22a6d232 | Nikos Skalkotos | |
66 | e2cf65d3 | Nikos Skalkotos | def success(msg, new_line=True): |
67 | 979096dd | Nikos Skalkotos | if not silent: |
68 | 979096dd | Nikos Skalkotos | nl = "\n" if new_line else '' |
69 | 979096dd | Nikos Skalkotos | sys.stdout.write(colored.green(msg) + nl) |
70 | 979096dd | Nikos Skalkotos | if not nl: |
71 | 979096dd | Nikos Skalkotos | sys.stdout.flush() |
72 | 979096dd | Nikos Skalkotos | |
73 | 979096dd | Nikos Skalkotos | |
74 | 979096dd | Nikos Skalkotos | def output(msg="", new_line=True): |
75 | 979096dd | Nikos Skalkotos | if not silent: |
76 | 979096dd | Nikos Skalkotos | nl = "\n" if new_line else '' |
77 | 979096dd | Nikos Skalkotos | sys.stdout.write(msg + nl) |
78 | 979096dd | Nikos Skalkotos | if not nl: |
79 | 979096dd | Nikos Skalkotos | sys.stdout.flush() |
80 | 979096dd | Nikos Skalkotos | |
81 | 979096dd | Nikos Skalkotos | |
82 | 979096dd | Nikos Skalkotos | def progress(label='', n=100): |
83 | 22a6d232 | Nikos Skalkotos | |
84 | 979096dd | Nikos Skalkotos | PROGRESS_LENGTH = 32
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85 | 979096dd | Nikos Skalkotos | MESSAGE_LENGTH = 32
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86 | 22a6d232 | Nikos Skalkotos | |
87 | 979096dd | Nikos Skalkotos | def progress_generator(label, n): |
88 | 979096dd | Nikos Skalkotos | position = 0
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89 | 979096dd | Nikos Skalkotos | for i in uiprogress.bar(range(n), label.ljust(MESSAGE_LENGTH), \ |
90 | 979096dd | Nikos Skalkotos | PROGRESS_LENGTH, silent): |
91 | 979096dd | Nikos Skalkotos | if i < position:
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92 | 979096dd | Nikos Skalkotos | continue
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93 | 979096dd | Nikos Skalkotos | position = yield
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94 | 979096dd | Nikos Skalkotos | yield # suppress the StopIteration exception |
95 | 979096dd | Nikos Skalkotos | return progress_generator(label, n)
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96 | 22a6d232 | Nikos Skalkotos | |
97 | 22a6d232 | Nikos Skalkotos | # vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |