/brz/remove-bazaar

# Copyright (C) 2011, 2012 Canonical Ltd

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""bzr-upload command implementations."""

from __future__ import absolute_import

from ... import (

    branch,

    commands,

    config,

    lazy_import,

    option,

    )

lazy_import.lazy_import(globals(), """

import stat

import sys

from breezy import (

    controldir,

    errors,

    globbing,

    ignores,

    revision,

    transport,

    urlutils,

    )

""")

from ...sixish import (

    text_type,

    )

auto_option = config.Option(

    'upload_auto', default=False, from_unicode=config.bool_from_store,

    help="""\

Whether upload should occur when the tip of the branch changes.

""")

auto_quiet_option = config.Option(

    'upload_auto_quiet', default=False, from_unicode=config.bool_from_store,

    help="""\

Whether upload should occur quietly.

""")

location_option = config.Option(

    'upload_location', default=None,

    help="""\

The url to upload the working tree to.

""")

revid_location_option = config.Option(

    'upload_revid_location', default=u'.bzr-upload.revid',

    help="""\

The relative path to be used to store the uploaded revid.

The only bzr-related info uploaded with the working tree is the corresponding

revision id. The uploaded working tree is not linked to any other bzr data.

If the layout of your remote server is such that you can't write in the

root directory but only in the directories inside that root, you will need

to use the 'upload_revid_location' configuration variable to specify the

relative path to be used. That configuration variable can be specified in

locations.conf or branch.conf.

For example, given the following layout:

  Project/

    private/

    public/

you may have write access in 'private' and 'public' but in 'Project'

itself. In that case, you can add the following in your locations.conf or

branch.conf file:

  upload_revid_location = private/.bzr-upload.revid

""")

# FIXME: Add more tests around invalid paths or relative paths that doesn't

# exist on remote (if only to get proper error messages) for

# 'upload_revid_location'

class BzrUploader(object):

    def __init__(self, branch, to_transport, outf, tree, rev_id,

                 quiet=False):

        self.branch = branch

        self.to_transport = to_transport

        self.outf = outf

        self.tree = tree

        self.rev_id = rev_id

        self.quiet = quiet

        self._pending_deletions = []

        self._pending_renames = []

        self._uploaded_revid = None

        self._ignored = None

    def _up_stat(self, relpath):

        return self.to_transport.stat(urlutils.escape(relpath))

    def _up_rename(self, old_path, new_path):

        return self.to_transport.rename(urlutils.escape(old_path),

                                        urlutils.escape(new_path))

    def _up_delete(self, relpath):

        return self.to_transport.delete(urlutils.escape(relpath))

    def _up_delete_tree(self, relpath):

        return self.to_transport.delete_tree(urlutils.escape(relpath))

    def _up_mkdir(self, relpath, mode):

        return self.to_transport.mkdir(urlutils.escape(relpath), mode)

    def _up_rmdir(self, relpath):

        return self.to_transport.rmdir(urlutils.escape(relpath))

    def _up_put_bytes(self, relpath, bytes, mode):

        self.to_transport.put_bytes(urlutils.escape(relpath), bytes, mode)

    def _up_get_bytes(self, relpath):

        return self.to_transport.get_bytes(urlutils.escape(relpath))

    def set_uploaded_revid(self, rev_id):

        # XXX: Add tests for concurrent updates, etc.

        revid_path = self.branch.get_config_stack().get('upload_revid_location')

        self.to_transport.put_bytes(urlutils.escape(revid_path), rev_id)

        self._uploaded_revid = rev_id

    def get_uploaded_revid(self):

        if self._uploaded_revid is None:

            revid_path = self.branch.get_config_stack(

                ).get('upload_revid_location')

            try:

                self._uploaded_revid = self._up_get_bytes(revid_path)

            except errors.NoSuchFile:

                # We have not uploaded to here.

                self._uploaded_revid = revision.NULL_REVISION

        return self._uploaded_revid

    def _get_ignored(self):

        if self._ignored is None:

            try:

                ignore_file_path = '.bzrignore-upload'

                ignore_file_id = self.tree.path2id(ignore_file_path)

                ignore_file = self.tree.get_file(ignore_file_id,

                                                 ignore_file_path)

                ignored_patterns = ignores.parse_ignore_file(ignore_file)

            except errors.NoSuchId:

                ignored_patterns = []

            self._ignored = globbing.Globster(ignored_patterns)

        return self._ignored

    def is_ignored(self, relpath):

        glob = self._get_ignored()

        ignored = glob.match(relpath)

        import os

        if not ignored:

            # We still need to check that all parents are not ignored

            dir = os.path.dirname(relpath)

            while dir and not ignored:

                ignored = glob.match(dir)

                if not ignored:

                    dir = os.path.dirname(dir)

        return ignored

    def upload_file(self, relpath, id, mode=None):

        if mode is None:

            if self.tree.is_executable(id):

                mode = 0o775

            else:

                mode = 0o664

        if not self.quiet:

            self.outf.write('Uploading %s\n' % relpath)

        self._up_put_bytes(relpath, self.tree.get_file_text(id), mode)

    def upload_file_robustly(self, relpath, id, mode=None):

        """Upload a file, clearing the way on the remote side.

        When doing a full upload, it may happen that a directory exists where

        we want to put our file.

        """

        try:

            st = self._up_stat(relpath)

            if stat.S_ISDIR(st.st_mode):

                # A simple rmdir may not be enough

                if not self.quiet:

                    self.outf.write('Clearing %s/%s\n' % (

                            self.to_transport.external_url(), relpath))

                self._up_delete_tree(relpath)

        except errors.PathError:

            pass

        self.upload_file(relpath, id, mode)

    def make_remote_dir(self, relpath, mode=None):

        if mode is None:

            mode = 0o775

        self._up_mkdir(relpath, mode)

    def make_remote_dir_robustly(self, relpath, mode=None):

        """Create a remote directory, clearing the way on the remote side.

        When doing a full upload, it may happen that a file exists where we

        want to create our directory.

        """

        try:

            st = self._up_stat(relpath)

            if not stat.S_ISDIR(st.st_mode):

                if not self.quiet:

                    self.outf.write('Deleting %s/%s\n' % (

                            self.to_transport.external_url(), relpath))

                self._up_delete(relpath)

            else:

                # Ok the remote dir already exists, nothing to do

                return

        except errors.PathError:

            pass

        self.make_remote_dir(relpath, mode)

    def delete_remote_file(self, relpath):

        if not self.quiet:

            self.outf.write('Deleting %s\n' % relpath)

        self._up_delete(relpath)

    def delete_remote_dir(self, relpath):

        if not self.quiet:

            self.outf.write('Deleting %s\n' % relpath)

        self._up_rmdir(relpath)

        # XXX: Add a test where a subdir is ignored but we still want to

        # delete the dir -- vila 100106

    def delete_remote_dir_maybe(self, relpath):

        """Try to delete relpath, keeping failures to retry later."""

        try:

            self._up_rmdir(relpath)

        # any kind of PathError would be OK, though we normally expect

        # DirectoryNotEmpty

        except errors.PathError:

            self._pending_deletions.append(relpath)

    def finish_deletions(self):

        if self._pending_deletions:

            # Process the previously failed deletions in reverse order to

            # delete children before parents

            for relpath in reversed(self._pending_deletions):

                self._up_rmdir(relpath)

            # The following shouldn't be needed since we use it once per

            # upload, but better safe than sorry ;-)

            self._pending_deletions = []

    def rename_remote(self, old_relpath, new_relpath):

        """Rename a remote file or directory taking care of collisions.

        To avoid collisions during bulk renames, each renamed target is

        temporarily assigned a unique name. When all renames have been done,

        each target get its proper name.

        """

        # We generate a sufficiently random name to *assume* that

        # no collisions will occur and don't worry about it (nor

        # handle it).

        import os

        import random

        import time

        stamp = '.tmp.%.9f.%d.%d' % (time.time(),

                                     os.getpid(),

                                     random.randint(0,0x7FFFFFFF))

        if not self.quiet:

            self.outf.write('Renaming %s to %s\n' % (old_relpath, new_relpath))

        self._up_rename(old_relpath, stamp)

        self._pending_renames.append((stamp, new_relpath))

    def finish_renames(self):

        for (stamp, new_path) in self._pending_renames:

            self._up_rename(stamp, new_path)

        # The following shouldn't be needed since we use it once per upload,

        # but better safe than sorry ;-)

        self._pending_renames = []

    def upload_full_tree(self):

        self.to_transport.ensure_base() # XXX: Handle errors (add

                                        # --create-prefix option ?)

        with self.tree.lock_read():

            for relpath, ie in self.tree.iter_entries_by_dir():

                if relpath in ('', '.bzrignore', '.bzrignore-upload'):

                    # skip root ('')

                    # .bzrignore and .bzrignore-upload have no meaning outside

                    # a working tree so do not upload them

                    continue

                if self.is_ignored(relpath):

                    if not self.quiet:

                        self.outf.write('Ignoring %s\n' % relpath)

                    continue

                if ie.kind == 'file':

                    self.upload_file_robustly(relpath, ie.file_id)

                elif ie.kind == 'directory':

                    self.make_remote_dir_robustly(relpath)

                elif ie.kind == 'symlink':

                    if not self.quiet:

                        target = self.tree.path_content_summary(relpath)[3]

                        self.outf.write('Not uploading symlink %s -> %s\n'

                                        % (relpath, target))

                else:

                    raise NotImplementedError

            self.set_uploaded_revid(self.rev_id)

    def upload_tree(self):

        # If we can't find the revid file on the remote location, upload the

        # full tree instead

        rev_id = self.get_uploaded_revid()

        if rev_id == revision.NULL_REVISION:

            if not self.quiet:

                self.outf.write('No uploaded revision id found,'

                                ' switching to full upload\n')

            self.upload_full_tree()

            # We're done

            return

        # Check if the revision hasn't already been uploaded

        if rev_id == self.rev_id:

            if not self.quiet:

                self.outf.write('Remote location already up to date\n')

        from_tree = self.branch.repository.revision_tree(rev_id)

        self.to_transport.ensure_base() # XXX: Handle errors (add

                                        # --create-prefix option ?)

        changes = self.tree.changes_from(from_tree)

        with self.tree.lock_read():

            for (path, id, kind) in changes.removed:

                if self.is_ignored(path):

                    if not self.quiet:

                        self.outf.write('Ignoring %s\n' % path)

                    continue

                if kind is 'file':

                    self.delete_remote_file(path)

                elif kind is  'directory':

                    self.delete_remote_dir_maybe(path)

                elif kind == 'symlink':

                    if not self.quiet:

                        target = self.tree.path_content_summary(path)[3]

                        self.outf.write('Not deleting remote symlink %s -> %s\n'

                                        % (path, target))

                else:

                    raise NotImplementedError

            for (old_path, new_path, id, kind,

                 content_change, exec_change) in changes.renamed:

                if self.is_ignored(old_path) and self.is_ignored(new_path):

                    if not self.quiet:

                        self.outf.write('Ignoring %s\n' % old_path)

                        self.outf.write('Ignoring %s\n' % new_path)

                    continue

                if content_change:

                    # We update the old_path content because renames and

                    # deletions are differed.

                    self.upload_file(old_path, id)

                if kind == 'symlink':

                    if not self.quiet:

                        self.outf.write('Not renaming remote symlink %s to %s\n'

                                        % (old_path, new_path))

                else:

                    self.rename_remote(old_path, new_path)

            self.finish_renames()

            self.finish_deletions()

            for (path, id, old_kind, new_kind) in changes.kind_changed:

                if self.is_ignored(path):

                    if not self.quiet:

                        self.outf.write('Ignoring %s\n' % path)

                    continue

                if old_kind == 'file':

                    self.delete_remote_file(path)

                elif old_kind ==  'directory':

                    self.delete_remote_dir(path)

                else:

                    raise NotImplementedError

                if new_kind == 'file':

                    self.upload_file(path, id)

                elif new_kind is 'directory':

                    self.make_remote_dir(path)

                else:

                    raise NotImplementedError

            for (path, id, kind) in changes.added:

                if self.is_ignored(path):

                    if not self.quiet:

                        self.outf.write('Ignoring %s\n' % path)

                    continue

                if kind == 'file':

                    self.upload_file(path, id)

                elif kind == 'directory':

                    self.make_remote_dir(path)

                elif kind == 'symlink':

                    if not self.quiet:

                        target = self.tree.path_content_summary(path)[3]

                        self.outf.write('Not uploading symlink %s -> %s\n'

                                        % (path, target))

                else:

                    raise NotImplementedError

            # XXX: Add a test for exec_change

            for (path, id, kind,

                 content_change, exec_change) in changes.modified:

                if self.is_ignored(path):

                    if not self.quiet:

                        self.outf.write('Ignoring %s\n' % path)

                    continue

                if kind is 'file':

                    self.upload_file(path, id)

                else:

                    raise NotImplementedError

            self.set_uploaded_revid(self.rev_id)

class CannotUploadToWorkingTree(errors.BzrCommandError):

    _fmt = 'Cannot upload to a bzr managed working tree: %(url)s".'

class DivergedUploadedTree(errors.BzrCommandError):

    _fmt = ("Your branch (%(revid)s)"

            " and the uploaded tree (%(uploaded_revid)s) have diverged: ")

class cmd_upload(commands.Command):

    """Upload a working tree, as a whole or incrementally.

    If no destination is specified use the last one used.

    If no revision is specified upload the changes since the last upload.

    Changes include files added, renamed, modified or removed.

    """

    _see_also = ['plugins/upload']

    takes_args = ['location?']

    takes_options = [

        'revision',

        'remember',

        'overwrite',

        option.Option('full', 'Upload the full working tree.'),

        option.Option('quiet', 'Do not output what is being done.',

                       short_name='q'),

        option.Option('directory',

                      help='Branch to upload from, '

                      'rather than the one containing the working directory.',

                      short_name='d',

                      type=text_type,

                      ),

        option.Option('auto',

                      'Trigger an upload from this branch whenever the tip '

                      'revision changes.')

       ]

    def run(self, location=None, full=False, revision=None, remember=None,

            directory=None, quiet=False, auto=None, overwrite=False

            ):

        if directory is None:

            directory = u'.'

        (wt, branch,

         relpath) = controldir.ControlDir.open_containing_tree_or_branch(

             directory)

        if wt:

            wt.lock_read()

            locked = wt

        else:

            branch.lock_read()

            locked = branch

        try:

            if wt:

                changes = wt.changes_from(wt.basis_tree())

                if revision is None and  changes.has_changed():

                    raise errors.UncommittedChanges(wt)

            conf = branch.get_config_stack()

            if location is None:

                stored_loc = conf.get('upload_location')

                if stored_loc is None:

                    raise errors.BzrCommandError(

                        'No upload location known or specified.')

                else:

                    # FIXME: Not currently tested

                    display_url = urlutils.unescape_for_display(stored_loc,

                            self.outf.encoding)

                    self.outf.write("Using saved location: %s\n" % display_url)

                    location = stored_loc

            to_transport = transport.get_transport(location)

            # Check that we are not uploading to a existing working tree.

            try:

                to_bzr_dir = controldir.ControlDir.open_from_transport(

                        to_transport)

                has_wt = to_bzr_dir.has_workingtree()

            except errors.NotBranchError:

                has_wt = False

            except errors.NotLocalUrl:

                # The exception raised is a bit weird... but that's life.

                has_wt = True

            if has_wt:

                raise CannotUploadToWorkingTree(url=location)

            if revision is None:

                rev_id = branch.last_revision()

            else:

                if len(revision) != 1:

                    raise errors.BzrCommandError(

                        'bzr upload --revision takes exactly 1 argument')

                rev_id = revision[0].in_history(branch).rev_id

            tree = branch.repository.revision_tree(rev_id)

            uploader = BzrUploader(branch, to_transport, self.outf, tree,

                                   rev_id, quiet=quiet)

            if not overwrite:

                prev_uploaded_rev_id = uploader.get_uploaded_revid()

                graph = branch.repository.get_graph()

                if not graph.is_ancestor(prev_uploaded_rev_id, rev_id):

                    raise DivergedUploadedTree(

                        revid=rev_id, uploaded_revid=prev_uploaded_rev_id)

            if full:

                uploader.upload_full_tree()

            else:

                uploader.upload_tree()

        finally:

            locked.unlock()

        # We uploaded successfully, remember it

        branch.lock_write()

        try:

            upload_location = conf.get('upload_location')

            if upload_location is None or remember:

                conf.set('upload_location',

                         urlutils.unescape(to_transport.base))

            if auto is not None:

                conf.set('upload_auto', auto)

        finally:

            branch.unlock()