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Viewing changes to fai/command/replay.py

  • Committer: Robert Collins
  • Date: 2005-09-14 11:27:20 UTC
  • mto: (147.2.6) (364.1.3 bzrtools)
  • mto: This revision was merged to the branch mainline in revision 324.
  • Revision ID: robertc@robertcollins.net-20050914112720-c66a21de86eafa6e
trim fai cribbage

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fai/command/replay.py
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# Copyright (C) 2004 Aaron Bentley
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# <aaron.bentley@utoronto.ca>
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#
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#    This program is free software; you can redistribute it and/or modify
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#    it under the terms of the GNU General Public License as published by
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#    the Free Software Foundation; either version 2 of the License, or
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#    (at your option) any later version.
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#
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#    This program is distributed in the hope that it will be useful,
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#    but WITHOUT ANY WARRANTY; without even the implied warranty of
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#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#    GNU General Public License for more details.
13
 
#
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#    You should have received a copy of the GNU General Public License
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#    along with this program; if not, write to the Free Software
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#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17
 
 
18
 
import sys
19
 
import os
20
 
import shutil
21
 
sys.path=[os.path.realpath(os.path.dirname(__file__)+"/..")]+sys.path
22
 
import arch
23
 
 
24
 
import pylon
25
 
import pylon.util
26
 
from pylon import errors
27
 
 
28
 
import cmdutil
29
 
import commands
30
 
 
31
 
__docformat__ = "restructuredtext"
32
 
__doc__ = "Native replay command"
33
 
 
34
 
def read_changeset(revision):
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    my_dir = pylon.util.tmpdir(os.getcwd())
36
 
    changeset = revision.get_patch(my_dir)
37
 
    real = pylon.read_arch_changeset(changeset)
38
 
    shutil.rmtree(my_dir)
39
 
    return real
40
 
 
41
 
class ComposeHandler:
42
 
    def __init__(self, tree, reverse, munge_opts):
43
 
        self.tree = tree
44
 
        self.reverse = reverse
45
 
        self.munge_opts = munge_opts
46
 
        self.last_changeset = None
47
 
 
48
 
    def handle_revision(self, revision):
49
 
        if self.last_changeset is None:
50
 
            cmdutil.chatter("Reading %s" % str(revision))
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            self.last_changeset = read_changeset(revision)
52
 
        else:
53
 
            cmdutil.chatter("Combining with %s" % str(revision))
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            next_changeset = read_changeset(revision)
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            self.last_changeset = pylon.compose_changesets(self.last_changeset,
56
 
                                                           next_changeset)
57
 
        return 0
58
 
 
59
 
 
60
 
    def finalize(self):
61
 
        if self.last_changeset is None:
62
 
            return False
63
 
        cmdutil.chatter("Applying changeset")
64
 
        inventory = pylon.get_id_filename_map(self.tree)
65
 
        pylon.add_inventory_missing(inventory, self.last_changeset, 
66
 
                                    self.reverse)
67
 
        pylon.apply_changeset(self.last_changeset, inventory, self.tree, 
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                              pylon.ArchConflictHandler(self.tree), 
69
 
                              self.reverse)
70
 
        return True
71
 
 
72
 
class ApplyNativeHandler:
73
 
    def __init__(self, tree, reverse, munge_opts):
74
 
        self.tree = tree
75
 
        self.reverse = reverse
76
 
        self.did_nothing = True
77
 
        self.munge_opts = munge_opts
78
 
 
79
 
    def handle_revision(self, revision):
80
 
        self.did_nothing = False
81
 
        cmdutil.chatter("Applying %s" % str(revision))
82
 
        self.last_changeset = read_changeset(revision)
83
 
        inventory = pylon.get_id_filename_map(self.tree)
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        pylon.add_inventory_missing(inventory, self.last_changeset, 
85
 
                                    self.reverse)
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        conflict_handler = pylon.ArchConflictHandler(self.tree)
87
 
        pylon.apply_changeset(self.last_changeset, inventory, self.tree, 
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                              conflict_handler, self.reverse)
89
 
        if conflict_handler.stop_conflicts:
90
 
            return 1
91
 
        else:
92
 
            return 0
93
 
 
94
 
    def finalize(self):
95
 
        return not self.did_nothing
96
 
 
97
 
class ApplyHandler:
98
 
    def __init__(self, tree, reverse, munge_opts):
99
 
        self.tree = tree
100
 
        self.reverse = reverse
101
 
        self.did_nothing = True
102
 
        self.munge_opts = munge_opts
103
 
 
104
 
    def handle_revision(self, revision):
105
 
        self.did_nothing = False
106
 
        cmdutil.chatter("Applying %s" % str(revision))
107
 
        result = pylon.replay(self.tree, revision, cmdutil.colorize,
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                              reverse=self.reverse, munge_opts=self.munge_opts)
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        return result
110
 
 
111
 
    def finalize(self):
112
 
        return not self.did_nothing
113
 
 
114
 
class Replay(commands.BaseCommand):
115
 
    """Apply a revision's changeset to the current tree"""
116
 
    def __init__(self):
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        self.description = self.__doc__
118
 
 
119
 
    def get_completer(self, arg, index):
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        return cmdutil.merge_completions(arch.tree_root("."), arg, index)
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122
 
    def do_command(self, cmdargs):
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        try:
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            tree = arch.tree_root(".")
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        except arch.errors.TreeRootError, e:
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            raise errors.CommandFailedWrapper(e)
127
 
            
128
 
        parser = self.get_parser()
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        (options, args) = parser.parse_args(cmdargs)
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        action = options.type
131
 
        if action == "default":
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            action = "skip-present"
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134
 
        if options.logs_only:
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            munge_opts = pylon.MungeOpts()
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            munge_opts.all_types(True)
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            munge_opts.add_keep_pattern('^\./\{arch\}/[^=].*')
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139
 
        else:
140
 
            munge_opts = None
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142
 
        if len(args) == 0:
143
 
            args.append(None)
144
 
        if munge_opts is not None or action == "skip-conflicts":
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            revision_handler = ApplyHandler(tree, options.reverse, munge_opts)
146
 
        else:
147
 
            revision_handler = options.method(tree, options.reverse, munge_opts)
148
 
        if isinstance(revision_handler, ComposeHandler):
149
 
            if options.reverse:
150
 
                options.reverse_list = not options.reverse_list
151
 
 
152
 
        for arg in args:
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            revisions = None
154
 
            if options.type == "default" and arg is not None:
155
 
                result = cmdutil.determine_version_revision_tree(arg, tree)
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                if isinstance(result, arch.Revision):
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                    revisions = [result]
158
 
            if revisions == None:
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                revisions = cmdutil.revision_iterator(tree, action, [arg],
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                                                      options.reverse_list, 
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                                                      options.modified,
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                                                      options.shallow)
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            for revision in revisions:
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                if isinstance(revision, arch.Patchlog):
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                    revision = revision.revision
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                cmdutil.ensure_archive_registered(revision.archive)
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                status = revision_handler.handle_revision(revision)
168
 
                if status != 0:
169
 
                    return status
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            if not revision_handler.finalize():
171
 
                cmdutil.chatter("Tree is already up to date")
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        return 0
173
 
 
174
 
    def get_parser(self):
175
 
        parser = cmdutil.CmdOptionParser("fai revisions [revision]")
176
 
        select = cmdutil.OptionGroup(parser, "Selection options",
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                          "Control which revisions are applied.  These options"
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                          " are mutually exclusive.  If more than one is"
179
 
                          " specified, the last is used.")
180
 
        cmdutil.add_revision_iter_options(select)
181
 
        select.add_option("--skip-conflicts", action="store_const", 
182
 
                          const="skip-conflicts", dest="type",
183
 
                          help="Revisions that can be applied without"
184
 
                          "producing conflicts")
185
 
 
186
 
        parser.add_option_group(select)
187
 
        parser.add_option("-r", "--reverse", action="store_true", 
188
 
                          dest="reverse", help="Apply changeset(s) in reverse")
189
 
        parser.add_option("--reverse-list", action="store_true", 
190
 
                          dest="reverse_list", 
191
 
                          help="Apply revisions in reverse order")
192
 
        parser.add_option("--patch-logs-only", action="store_true", 
193
 
                          dest="logs_only", 
194
 
                          help="Apply log changes only")
195
 
        native = "read_arch_changeset" in dir(pylon)
196
 
        parser.set_defaults(method=ApplyHandler)
197
 
        if native:
198
 
            parser.add_option("--native", action="store_const", dest="method",
199
 
                              help="Use native changeset method", 
200
 
                              const=ApplyNativeHandler)
201
 
            parser.add_option("--combine", action="store_const", dest="method",
202
 
                              help="Combine changesets before applying",
203
 
                              const=ComposeHandler)
204
 
        return parser
205
 
    def help(self, parser=None):
206
 
        """
207
 
        Prints a help message.
208
 
 
209
 
        :param parser: If supplied, the parser to use for generating help.  If \
210
 
        not supplied, it is retrieved.
211
 
        :type parser: cmdutil.CmdOptionParser
212
 
        """
213
 
        if parser==None:
214
 
            parser=self.get_parser()
215
 
        parser.print_help()
216
 
 
217
 
 
218
 
def add_command(commands):
219
 
    commands["replay"] = Replay
220
 
 
221
 
# arch-tag: cd6b5159-30ee-410b-8ad4-7437b75f98cd