1 # Copyright 2012 GRNET S.A. All rights reserved.
3 # Redistribution and use in source and binary forms, with or
4 # without modification, are permitted provided that the following
7 # 1. Redistributions of source code must retain the above
8 # copyright notice, this list of conditions and the following
11 # 2. Redistributions in binary form must reproduce the above
12 # copyright notice, this list of conditions and the following
13 # disclaimer in the documentation and/or other materials
14 # provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
17 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
20 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 # POSSIBILITY OF SUCH DAMAGE.
29 # The views and conclusions contained in the software and
30 # documentation are those of the authors and should not be
31 # interpreted as representing official policies, either expressed
32 # or implied, of GRNET S.A.
37 from colors import red, green, yellow
38 from progress.bar import Bar
41 class FatalError(Exception):
48 def get_command(command):
49 def find_sbin_command(command, exception):
50 search_paths = ['/usr/local/sbin', '/usr/sbin', '/sbin']
51 for fullpath in map(lambda x: "%s/%s" % (x, command), search_paths):
52 if os.path.exists(fullpath) and os.access(fullpath, os.X_OK):
53 return pbs.Command(fullpath)
57 return pbs.__getattr__(command)
58 except pbs.CommadNotFount as e:
59 return find_sbin_command(command, e)
62 def error(msg, new_line=True):
63 nl = "\n" if new_line else ''
64 sys.stderr.write(red('Error: %s' % msg) + nl)
67 def warn(msg, new_line=True):
69 nl = "\n" if new_line else ''
70 sys.stderr.write(yellow("Warning: %s" % msg) + nl)
73 def success(msg, new_line=True):
75 nl = "\n" if new_line else ''
76 sys.stdout.write(green(msg) + nl)
81 def output(msg="", new_line=True):
83 nl = "\n" if new_line else ''
84 sys.stdout.write(msg + nl)
89 def progress(message='', bar_type="default"):
94 'default': '%(index)d/%(max)d',
95 'percent': '%(percent)d%%',
96 'b': '%(index)d/%(max)d B',
97 'kb': '%(index)d/%(max)d KB',
98 'mb': '%(index)d/%(max)d MB'
102 bar.message = message.ljust(MESSAGE_LENGTH)
104 bar.suffix = suffix[bar_type]
105 bar.bar_prefix = ' ['
106 bar.bar_suffix = '] '
111 def md5(filename, size):
113 BLOCKSIZE = 2 ** 22 # 4MB
115 progressbar = progress("Calculating md5sum:", 'mb')
116 progressbar.max = (size // (2 ** 20))
118 with open(filename, "r") as src:
121 length = min(left, BLOCKSIZE)
122 data = src.read(length)
125 progressbar.goto((size - left) // (2 ** 20))
127 checksum = md5.hexdigest()
128 output("\rCalculating md5sum...\033[K", False)
133 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :