Source Code for Module config_management.rhncfg_diff_revisions

 1  # 
 2  # Copyright (c) 2008--2016 Red Hat, Inc. 
 3  # 
 4  # This software is licensed to you under the GNU General Public License, 
 5  # version 2 (GPLv2). There is NO WARRANTY for this software, express or 
 6  # implied, including the implied warranties of MERCHANTABILITY or FITNESS 
 7  # FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2 
 8  # along with this software; if not, see 
 9  # http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 
10  # 
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12  # granted to use or replicate Red Hat trademarks that are incorporated 
13  # in this software or its documentation. 
14  # 
15   
16  import sys 
17   
18  from config_common import handler_base, cfg_exceptions 
19  from config_common.rhn_log import log_debug, die 
20   
21 -class Handler(handler_base.HandlerBase): 
22      _usage_options = "[options] file" 
23      _options_table = [ 
24          handler_base.HandlerBase._option_class( 
25              '-c', '--channel',    action="append", 
26               help="Use this config channel", 
27           ), 
28          handler_base.HandlerBase._option_class( 
29              '-r', '--revision',     action="append", 
30               help="Use this revision", 
31           ), 
32      ] 
33 -    def run(self): 
34          log_debug(2) 
35          r = self.repository 
36   
37          if len(self.args) != 1: 
38              die(3, "One file needs to be specified") 
39   
40          path = self.args[0] 
41   
42          channel_dst = None 
43          ns_count = len(self.options.channel or []) 
44          if ns_count == 0: 
45              die(3, "At least one config channel has to be specified") 
46   
47          channel_src = self.options.channel[0] 
48          if ns_count > 2: 
49              die(3, "At most two config channels can be specified") 
50   
51          if not r.config_channel_exists(channel_src): 
52              die(4, "Source config channel %s does not exist" % channel_src) 
53   
54          if ns_count == 2: 
55              channel_dst = self.options.channel[1] 
56   
57              if not r.config_channel_exists(channel_dst): 
58                  die(4, "Config channel %s does not exist" % channel_dst) 
59   
60          revision_dst = None 
61          rev_count = len(self.options.revision or []) 
62          if rev_count == 0: 
63              die(3, "At least one revision has to be specified") 
64   
65          revision_src = self.options.revision[0] 
66          if rev_count > 2: 
67              die(3, "At most two revisions can be specified") 
68   
69          if rev_count == 2: 
70              revision_dst = self.options.revision[1] 
71   
72          try: 
73              result = r.diff_file_revisions(path, channel_src, 
74                  revision_src, channel_dst, revision_dst) 
75          except cfg_exceptions.RepositoryFileMissingError: 
76              e = sys.exc_info()[1] 
77              die(2, e[0]) 
78          except cfg_exceptions.BinaryFileDiffError: 
79              e = sys.exc_info()[1] 
80              die(3, e[0]) 
81   
82          sys.stdout.write(result) 
83