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Viewing changes to fai/command/replay.py

  • Committer: Robert Collins
  • Date: 2005-09-13 13:07:03 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-20050913130702-f471ae9f2833a484
create the output directory

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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.
 
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#
 
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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
 
 
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import sys
 
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import os
 
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import shutil
 
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sys.path=[os.path.realpath(os.path.dirname(__file__)+"/..")]+sys.path
 
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import arch
 
23
 
 
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import pylon
 
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import pylon.util
 
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from pylon import errors
 
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import cmdutil
 
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import commands
 
30
 
 
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__docformat__ = "restructuredtext"
 
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__doc__ = "Native replay command"
 
33
 
 
34
def read_changeset(revision):
 
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    my_dir = pylon.util.tmpdir(os.getcwd())
 
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    changeset = revision.get_patch(my_dir)
 
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    real = pylon.read_arch_changeset(changeset)
 
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    shutil.rmtree(my_dir)
 
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    return real
 
40
 
 
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class ComposeHandler:
 
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    def __init__(self, tree, reverse, munge_opts):
 
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        self.tree = tree
 
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        self.reverse = reverse
 
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        self.munge_opts = munge_opts
 
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        self.last_changeset = None
 
47
 
 
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    def handle_revision(self, revision):
 
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        if self.last_changeset is None:
 
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            cmdutil.chatter("Reading %s" % str(revision))
 
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            self.last_changeset = read_changeset(revision)
 
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        else:
 
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            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,
 
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                                                           next_changeset)
 
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        return 0
 
58
 
 
59
 
 
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    def finalize(self):
 
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        if self.last_changeset is None:
 
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            return False
 
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        cmdutil.chatter("Applying changeset")
 
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        inventory = pylon.get_id_filename_map(self.tree)
 
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        pylon.add_inventory_missing(inventory, self.last_changeset, 
 
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                                    self.reverse)
 
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        pylon.apply_changeset(self.last_changeset, inventory, self.tree, 
 
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                              pylon.ArchConflictHandler(self.tree), 
 
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                              self.reverse)
 
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        return True
 
71
 
 
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class ApplyNativeHandler:
 
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    def __init__(self, tree, reverse, munge_opts):
 
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        self.tree = tree
 
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        self.reverse = reverse
 
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        self.did_nothing = True
 
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        self.munge_opts = munge_opts
 
78
 
 
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    def handle_revision(self, revision):
 
80
        self.did_nothing = False
 
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        cmdutil.chatter("Applying %s" % str(revision))
 
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        self.last_changeset = read_changeset(revision)
 
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        inventory = pylon.get_id_filename_map(self.tree)
 
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        pylon.add_inventory_missing(inventory, self.last_changeset, 
 
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                                    self.reverse)
 
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        conflict_handler = pylon.ArchConflictHandler(self.tree)
 
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        pylon.apply_changeset(self.last_changeset, inventory, self.tree, 
 
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                              conflict_handler, self.reverse)
 
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        if conflict_handler.stop_conflicts:
 
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            return 1
 
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        else:
 
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            return 0
 
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    def finalize(self):
 
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        return not self.did_nothing
 
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class ApplyHandler:
 
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    def __init__(self, tree, reverse, munge_opts):
 
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        self.tree = tree
 
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        self.reverse = reverse
 
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        self.did_nothing = True
 
102
        self.munge_opts = munge_opts
 
103
 
 
104
    def handle_revision(self, revision):
 
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        self.did_nothing = False
 
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        cmdutil.chatter("Applying %s" % str(revision))
 
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        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"""
 
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    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
            
 
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        parser = self.get_parser()
 
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        (options, args) = parser.parse_args(cmdargs)
 
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        action = options.type
 
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        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\}/[^=].*')
 
138
 
 
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        else:
 
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            munge_opts = None
 
141
 
 
142
        if len(args) == 0:
 
143
            args.append(None)
 
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        if munge_opts is not None or action == "skip-conflicts":
 
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            revision_handler = ApplyHandler(tree, options.reverse, munge_opts)
 
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        else:
 
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            revision_handler = options.method(tree, options.reverse, munge_opts)
 
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        if isinstance(revision_handler, ComposeHandler):
 
149
            if options.reverse:
 
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                options.reverse_list = not options.reverse_list
 
151
 
 
152
        for arg in args:
 
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            revisions = None
 
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            if options.type == "default" and arg is not None:
 
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                result = cmdutil.determine_version_revision_tree(arg, tree)
 
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                if isinstance(result, arch.Revision):
 
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                    revisions = [result]
 
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            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)
 
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                if status != 0:
 
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                    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):
 
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        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"
 
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                          " specified, the last is used.")
 
180
        cmdutil.add_revision_iter_options(select)
 
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        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