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Viewing changes to bzrlib/smart/branch.py

  • Committer: Jelmer Vernooij
  • Date: 2012-01-24 13:14:06 UTC
  • mto: (6445.4.5 nested-trees-spec)
  • mto: This revision was merged to the branch mainline in revision 6518.
  • Revision ID: jelmer@samba.org-20120124131406-wedftkorbpv37bm0
Import nested tree doc from devnotes.

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bzrlib/smart/branch.py
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"""Server-side branch related request implmentations."""
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from __future__ import absolute_import
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from bzrlib import (
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    bencode,
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    errors,
 
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    revision as _mod_revision,
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    )
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from bzrlib.bzrdir import BzrDir
 
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from bzrlib.controldir import ControlDir
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from bzrlib.smart.request import (
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    FailedSmartServerResponse,
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    SmartServerRequest,
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        :return: A SmartServerResponse from self.do_with_branch().
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        """
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        transport = self.transport_from_client_path(path)
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        bzrdir = BzrDir.open_from_transport(transport)
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        if bzrdir.get_branch_reference() is not None:
 
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        controldir = ControlDir.open_from_transport(transport)
 
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        if controldir.get_branch_reference() is not None:
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            raise errors.NotBranchError(transport.base)
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        branch = bzrdir.open_branch(ignore_fallbacks=True)
 
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        branch = controldir.open_branch(ignore_fallbacks=True)
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        return self.do_with_branch(branch, *args)
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            branch.repository.unlock()
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class SmartServerBranchBreakLock(SmartServerBranchRequest):
 
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    def do_with_branch(self, branch):
 
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        """Break a branch lock.
 
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        """
 
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        branch.break_lock()
 
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        return SuccessfulSmartServerResponse(('ok', ), )
 
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class SmartServerBranchGetConfigFile(SmartServerBranchRequest):
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    def do_with_branch(self, branch):
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        The body is not utf8 decoded - its the literal bytestream from disk.
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        """
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        try:
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            content = branch._transport.get_bytes('branch.conf')
 
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            content = branch.control_transport.get_bytes('branch.conf')
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        except errors.NoSuchFile:
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            content = ''
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        return SuccessfulSmartServerResponse( ('ok', ), content)
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class SmartServerBranchPutConfigFile(SmartServerBranchRequest):
 
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    """Set the configuration data for a branch.
 
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    New in 2.5.
 
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    """
 
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    def do_with_branch(self, branch, branch_token, repo_token):
 
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        """Set the content of branch.conf.
 
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        The body is not utf8 decoded - its the literal bytestream for disk.
 
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        """
 
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        self._branch = branch
 
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        self._branch_token = branch_token
 
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        self._repo_token = repo_token
 
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        # Signal we want a body
 
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        return None
 
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    def do_body(self, body_bytes):
 
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        self._branch.repository.lock_write(token=self._repo_token)
 
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        try:
 
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            self._branch.lock_write(token=self._branch_token)
 
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            try:
 
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                self._branch.control_transport.put_bytes(
 
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                    'branch.conf', body_bytes)
 
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            finally:
 
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                self._branch.unlock()
 
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        finally:
 
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            self._branch.repository.unlock()
 
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        return SuccessfulSmartServerResponse(('ok', ))
 
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class SmartServerBranchGetParent(SmartServerBranchRequest):
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    def do_with_branch(self, branch):
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            self.branch.unlock()
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class SmartServerBranchHeadsToFetch(SmartServerBranchRequest):
 
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    def do_with_branch(self, branch):
 
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        """Return the heads-to-fetch for a Branch as two bencoded lists.
 
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        See Branch.heads_to_fetch.
 
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        New in 2.4.
 
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        """
 
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        must_fetch, if_present_fetch = branch.heads_to_fetch()
 
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        return SuccessfulSmartServerResponse(
 
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            (list(must_fetch), list(if_present_fetch)))
 
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class SmartServerBranchRequestGetStackedOnURL(SmartServerBranchRequest):
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    def do_with_branch(self, branch):
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        The revision list is returned as the body content,
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        with each revision utf8 encoded and \x00 joined.
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        """
 
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        branch.lock_read()
 
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        try:
 
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            graph = branch.repository.get_graph()
 
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            stop_revisions = (None, _mod_revision.NULL_REVISION)
 
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            history = list(graph.iter_lefthand_ancestry(
 
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                branch.last_revision(), stop_revisions))
 
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        finally:
 
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            branch.unlock()
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        return SuccessfulSmartServerResponse(
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            ('ok', ), ('\x00'.join(branch.revision_history())))
 
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            ('ok', ), ('\x00'.join(reversed(history))))
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class SmartServerBranchRequestLastRevisionInfo(SmartServerBranchRequest):
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        return SuccessfulSmartServerResponse(('ok', str(revno), last_revision))
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class SmartServerBranchRequestRevisionIdToRevno(SmartServerBranchRequest):
 
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    def do_with_branch(self, branch, revid):
 
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        """Return branch.revision_id_to_revno().
 
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        New in 2.5.
 
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        The revno is encoded in decimal, the revision_id is encoded as utf8.
 
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        """
 
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        try:
 
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            dotted_revno = branch.revision_id_to_dotted_revno(revid)
 
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        except errors.NoSuchRevision:
 
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            return FailedSmartServerResponse(('NoSuchRevision', revid))
 
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        return SuccessfulSmartServerResponse(
 
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            ('ok', ) + tuple(map(str, dotted_revno)))
 
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class SmartServerSetTipRequest(SmartServerLockedBranchRequest):
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    """Base class for handling common branch request logic for requests that
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    update the branch tip.
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    def do_tip_change_with_locked_branch(self, branch, new_last_revision_id):
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        if new_last_revision_id == 'null:':
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            branch.set_revision_history([])
 
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            branch._set_revision_history([])
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        else:
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            if not branch.repository.has_revision(new_last_revision_id):
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                return FailedSmartServerResponse(
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                    ('NoSuchRevision', new_last_revision_id))
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            branch.set_revision_history(branch._lefthand_history(
 
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            branch._set_revision_history(branch._lefthand_history(
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                new_last_revision_id, None, None))
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        return SuccessfulSmartServerResponse(('ok',))
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        branch.unlock()
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        return SuccessfulSmartServerResponse(('ok',))
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class SmartServerBranchRequestGetPhysicalLockStatus(SmartServerBranchRequest):
 
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    """Get the physical lock status for a branch.
 
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    New in 2.5.
 
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    """
 
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    def do_with_branch(self, branch):
 
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        if branch.get_physical_lock_status():
 
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            return SuccessfulSmartServerResponse(('yes',))
 
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        else:
 
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            return SuccessfulSmartServerResponse(('no',))