# Copyright (C) 2006-2011 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

"""Infrastructure for server-side request handlers.

Interesting module attributes:
    * The request_handlers registry maps verb names to SmartServerRequest
      classes.
    * The jail_info threading.local() object is used to prevent accidental
      opening of BzrDirs outside of the backing transport, or any other
      transports placed in jail_info.transports.  The jail_info is reset on
      every call into a request handler (which can happen an arbitrary number
      of times during a request).
"""

# XXX: The class names are a little confusing: the protocol will instantiate a
# SmartServerRequestHandler, whose dispatch_command method creates an instance
# of a SmartServerRequest subclass.

import threading
from _thread import get_ident

from ... import branch as _mod_branch
from ... import debug, errors, osutils, registry, revision, trace
from ... import transport as _mod_transport
from ... import urlutils
from ...lazy_import import lazy_import

lazy_import(
    globals(),
    """
from breezy.bzr import bzrdir
from breezy.bzr.bundle import serializer

import tempfile
""",
)


jail_info = threading.local()
jail_info.transports = None


class DisabledMethod(errors.InternalBzrError):
    _fmt = "The smart server method '%(class_name)s' is disabled."

    def __init__(self, class_name):
        errors.BzrError.__init__(self)
        self.class_name = class_name


def _install_hook():
    bzrdir.BzrDir.hooks.install_named_hook(
        "pre_open", _pre_open_hook, "checking server jail"
    )


def _pre_open_hook(transport):
    allowed_transports = getattr(jail_info, "transports", None)
    if allowed_transports is None:
        return
    abspath = transport.base
    for allowed_transport in allowed_transports:
        try:
            allowed_transport.relpath(abspath)
        except errors.PathNotChild:
            continue
        else:
            return
    raise errors.JailBreak(abspath)


_install_hook()


class SmartServerRequest:
    """Base class for request handlers.

    To define a new request, subclass this class and override the `do` method
    (and if appropriate, `do_body` as well).  Request implementors should take
    care to call `translate_client_path` and `transport_from_client_path` as
    appropriate when dealing with paths received from the client.
    """

    # XXX: rename this class to BaseSmartServerRequestHandler ?  A request
    # *handler* is a different concept to the request.

    def __init__(self, backing_transport, root_client_path="/", jail_root=None):
        """Constructor.

        :param backing_transport: the base transport to be used when performing
            this request.
        :param root_client_path: the client path that maps to the root of
            backing_transport.  This is used to interpret relpaths received
            from the client.  Clients will not be able to refer to paths above
            this root.  If root_client_path is None, then no translation will
            be performed on client paths.  Default is '/'.
        :param jail_root: if specified, the root of the BzrDir.open jail to use
            instead of backing_transport.
        """
        self._backing_transport = backing_transport
        if jail_root is None:
            jail_root = backing_transport
        self._jail_root = jail_root
        if root_client_path is not None:
            if not root_client_path.startswith("/"):
                root_client_path = "/" + root_client_path
            if not root_client_path.endswith("/"):
                root_client_path += "/"
        self._root_client_path = root_client_path
        self._body_chunks = []

    def _check_enabled(self):
        """Raises DisabledMethod if this method is disabled."""
        pass

    def do(self, *args):
        """Mandatory extension point for SmartServerRequest subclasses.

        Subclasses must implement this.

        This should return a SmartServerResponse if this command expects to
        receive no body.
        """
        raise NotImplementedError(self.do)

    def execute(self, *args):
        """Public entry point to execute this request.

        It will return a SmartServerResponse if the command does not expect a
        body.

        :param args: the arguments of the request.
        """
        self._check_enabled()
        return self.do(*args)

    def do_body(self, body_bytes):
        """Called if the client sends a body with the request.

        The do() method is still called, and must have returned None.

        Must return a SmartServerResponse.
        """
        if body_bytes != b"":
            raise errors.SmartProtocolError("Request does not expect a body")

    def do_chunk(self, chunk_bytes):
        """Called with each body chunk if the request has a streamed body.

        The do() method is still called, and must have returned None.
        """
        self._body_chunks.append(chunk_bytes)

    def do_end(self):
        """Called when the end of the request has been received."""
        body_bytes = b"".join(self._body_chunks)
        self._body_chunks = None
        return self.do_body(body_bytes)

    def setup_jail(self):
        jail_info.transports = [self._jail_root]

    def teardown_jail(self):
        jail_info.transports = None

    def translate_client_path(self, client_path):
        """Translate a path received from a network client into a local
        relpath.

        All paths received from the client *must* be translated.

        :param client_path: the path from the client.
        :returns: a relpath that may be used with self._backing_transport
            (unlike the untranslated client_path, which must not be used with
            the backing transport).
        """
        client_path = client_path.decode("utf-8")
        if self._root_client_path is None:
            # no translation necessary!
            return client_path
        if not client_path.startswith("/"):
            client_path = "/" + client_path
        if client_path + "/" == self._root_client_path:
            return "."
        if client_path.startswith(self._root_client_path):
            path = client_path[len(self._root_client_path) :]
            relpath = urlutils.joinpath("/", path)
            if not relpath.startswith("/"):
                raise ValueError(relpath)
            return urlutils.escape("." + relpath)
        else:
            raise errors.PathNotChild(client_path, self._root_client_path)

    def transport_from_client_path(self, client_path):
        """Get a backing transport corresponding to the location referred to by
        a network client.

        :seealso: translate_client_path
        :returns: a transport cloned from self._backing_transport
        """
        relpath = self.translate_client_path(client_path)
        return self._backing_transport.clone(relpath)


class SmartServerResponse:
    """A response to a client request.

    This base class should not be used. Instead use
    SuccessfulSmartServerResponse and FailedSmartServerResponse as appropriate.
    """

    def __init__(self, args, body=None, body_stream=None):
        """Constructor.

        :param args: tuple of response arguments.
        :param body: string of a response body.
        :param body_stream: iterable of bytestrings to be streamed to the
            client.
        """
        self.args = args
        if body is not None and body_stream is not None:
            raise errors.BzrError("'body' and 'body_stream' are mutually exclusive.")
        self.body = body
        self.body_stream = body_stream

    def __eq__(self, other):
        if other is None:
            return False
        return (
            other.args == self.args
            and other.body == self.body
            and other.body_stream is self.body_stream
        )

    def __repr__(self):
        return "<{} args={!r} body={!r}>".format(
            self.__class__.__name__, self.args, self.body
        )


class FailedSmartServerResponse(SmartServerResponse):
    """A SmartServerResponse for a request which failed."""

    def is_successful(self):
        """FailedSmartServerResponse are not successful."""
        return False


class SuccessfulSmartServerResponse(SmartServerResponse):
    """A SmartServerResponse for a successfully completed request."""

    def is_successful(self):
        """SuccessfulSmartServerResponse are successful."""
        return True


class SmartServerRequestHandler:
    """Protocol logic for smart server.

    This doesn't handle serialization at all, it just processes requests and
    creates responses.
    """

    # IMPORTANT FOR IMPLEMENTORS: It is important that SmartServerRequestHandler
    # not contain encoding or decoding logic to allow the wire protocol to vary
    # from the object protocol: we will want to tweak the wire protocol separate
    # from the object model, and ideally we will be able to do that without
    # having a SmartServerRequestHandler subclass for each wire protocol, rather
    # just a Protocol subclass.

    # TODO: Better way of representing the body for commands that take it,
    # and allow it to be streamed into the server.

    def __init__(self, backing_transport, commands, root_client_path, jail_root=None):
        """Constructor.

        :param backing_transport: a Transport to handle requests for.
        :param commands: a registry mapping command names to SmartServerRequest
            subclasses. e.g. breezy.transport.smart.vfs.vfs_commands.
        """
        self._backing_transport = backing_transport
        self._root_client_path = root_client_path
        self._commands = commands
        if jail_root is None:
            jail_root = backing_transport
        self._jail_root = jail_root
        self.response = None
        self.finished_reading = False
        self._command = None
        if "hpss" in debug.debug_flags:
            self._request_start_time = osutils.perf_counter()
            self._thread_id = get_ident()

    def _trace(self, action, message, extra_bytes=None, include_time=False):
        # It is a bit of a shame that this functionality overlaps with that of
        # ProtocolThreeRequester._trace. However, there is enough difference
        # that just putting it in a helper doesn't help a lot. And some state
        # is taken from the instance.
        if include_time:
            t = "%5.3fs " % (osutils.perf_counter() - self._request_start_time)
        else:
            t = ""
        if extra_bytes is None:
            extra = ""
        else:
            extra = " " + repr(extra_bytes[:40])
            if len(extra) > 33:
                extra = extra[:29] + extra[-1] + "..."
        trace.mutter("%12s: [%s] %s%s%s" % (action, self._thread_id, t, message, extra))

    def accept_body(self, bytes):
        """Accept body data."""
        if self._command is None:
            # no active command object, so ignore the event.
            return
        self._run_handler_code(self._command.do_chunk, (bytes,), {})
        if "hpss" in debug.debug_flags:
            self._trace("accept body", "%d bytes" % (len(bytes),), bytes)

    def end_of_body(self):
        """No more body data will be received."""
        self._run_handler_code(self._command.do_end, (), {})
        # cannot read after this.
        self.finished_reading = True
        if "hpss" in debug.debug_flags:
            self._trace("end of body", "", include_time=True)

    def _run_handler_code(self, callable, args, kwargs):
        """Run some handler specific code 'callable'.

        If a result is returned, it is considered to be the commands response,
        and finished_reading is set true, and its assigned to self.response.

        Any exceptions caught are translated and a response object created
        from them.
        """
        result = self._call_converting_errors(callable, args, kwargs)

        if result is not None:
            self.response = result
            self.finished_reading = True

    def _call_converting_errors(self, callable, args, kwargs):
        """Call callable converting errors to Response objects."""
        # XXX: most of this error conversion is VFS-related, and thus ought to
        # be in SmartServerVFSRequestHandler somewhere.
        try:
            self._command.setup_jail()
            try:
                return callable(*args, **kwargs)
            finally:
                self._command.teardown_jail()
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception as err:
            err_struct = _translate_error(err)
            return FailedSmartServerResponse(err_struct)

    def headers_received(self, headers):
        # Just a no-op at the moment.
        if "hpss" in debug.debug_flags:
            self._trace("headers", repr(headers))

    def args_received(self, args):
        cmd = args[0]
        args = args[1:]
        try:
            command = self._commands.get(cmd)
        except LookupError:
            if "hpss" in debug.debug_flags:
                self._trace("hpss unknown request", cmd, repr(args)[1:-1])
            raise errors.UnknownSmartMethod(cmd)
        if "hpss" in debug.debug_flags:
            from . import vfs

            if issubclass(command, vfs.VfsRequest):
                action = "hpss vfs req"
            else:
                action = "hpss request"
            self._trace(action, "{} {}".format(cmd, repr(args)[1:-1]))
        self._command = command(
            self._backing_transport, self._root_client_path, self._jail_root
        )
        self._run_handler_code(self._command.execute, args, {})

    def end_received(self):
        if self._command is None:
            # no active command object, so ignore the event.
            return
        self._run_handler_code(self._command.do_end, (), {})
        if "hpss" in debug.debug_flags:
            self._trace("end", "", include_time=True)

    def post_body_error_received(self, error_args):
        # Just a no-op at the moment.
        pass


def _translate_error(err):
    if isinstance(err, _mod_transport.NoSuchFile):
        return (b"NoSuchFile", err.path.encode("utf-8"))
    elif isinstance(err, _mod_transport.FileExists):
        return (b"FileExists", err.path.encode("utf-8"))
    elif isinstance(err, errors.DirectoryNotEmpty):
        return (b"DirectoryNotEmpty", err.path.encode("utf-8"))
    elif isinstance(err, errors.IncompatibleRepositories):
        return (
            b"IncompatibleRepositories",
            str(err.source),
            str(err.target),
            str(err.details),
        )
    elif isinstance(err, errors.ShortReadvError):
        return (
            b"ShortReadvError",
            err.path.encode("utf-8"),
            str(err.offset).encode("ascii"),
            str(err.length).encode("ascii"),
            str(err.actual).encode("ascii"),
        )
    elif isinstance(err, errors.RevisionNotPresent):
        return (b"RevisionNotPresent", err.revision_id, err.file_id)
    elif isinstance(err, errors.UnstackableRepositoryFormat):
        return (
            b"UnstackableRepositoryFormat",
            str(err.format).encode("utf-8"),
            err.url.encode("utf-8"),
        )
    elif isinstance(err, _mod_branch.UnstackableBranchFormat):
        return (
            b"UnstackableBranchFormat",
            str(err.format).encode("utf-8"),
            err.url.encode("utf-8"),
        )
    elif isinstance(err, errors.NotStacked):
        return (b"NotStacked",)
    elif isinstance(err, errors.BzrCheckError):
        return (b"BzrCheckError", err.msg.encode("utf-8"))
    elif isinstance(err, UnicodeError):
        # If it is a DecodeError, than most likely we are starting
        # with a plain string
        str_or_unicode = err.object
        if isinstance(str_or_unicode, str):
            # XXX: UTF-8 might have \x01 (our protocol v1 and v2 seperator
            # byte) in it, so this encoding could cause broken responses.
            # Newer clients use protocol v3, so will be fine.
            val = "u:" + str_or_unicode.encode("utf-8")
        else:
            val = "s:" + str_or_unicode.encode("base64")
        # This handles UnicodeEncodeError or UnicodeDecodeError
        return (
            err.__class__.__name__,
            err.encoding,
            val,
            str(err.start),
            str(err.end),
            err.reason,
        )
    elif isinstance(err, errors.TransportNotPossible):
        if err.msg == "readonly transport":
            return (b"ReadOnlyError",)
    elif isinstance(err, errors.ReadError):
        # cannot read the file
        return (b"ReadError", err.path)
    elif isinstance(err, errors.PermissionDenied):
        return (
            b"PermissionDenied",
            err.path.encode("utf-8"),
            err.extra.encode("utf-8"),
        )
    elif isinstance(err, errors.TokenMismatch):
        return (b"TokenMismatch", err.given_token, err.lock_token)
    elif isinstance(err, errors.LockContention):
        return (b"LockContention",)
    elif isinstance(err, errors.GhostRevisionsHaveNoRevno):
        return (b"GhostRevisionsHaveNoRevno", err.revision_id, err.ghost_revision_id)
    elif isinstance(err, urlutils.InvalidURL):
        return (b"InvalidURL", err.path.encode("utf-8"), err.extra.encode("ascii"))
    elif isinstance(err, MemoryError):
        # GZ 2011-02-24: Copy breezy.trace -Dmem_dump functionality here?
        return (b"MemoryError",)
    elif isinstance(err, errors.AlreadyControlDirError):
        return (b"AlreadyControlDir", err.path)
    # Unserialisable error.  Log it, and return a generic error
    trace.log_exception_quietly()
    return (
        b"error",
        trace._qualified_exception_name(err.__class__, True).encode("utf-8"),
        str(err).encode("utf-8"),
    )


class HelloRequest(SmartServerRequest):
    """Answer a version request with the highest protocol version this server
    supports.
    """

    def do(self):
        return SuccessfulSmartServerResponse((b"ok", b"2"))


class GetBundleRequest(SmartServerRequest):
    """Get a bundle of from the null revision to the specified revision."""

    def do(self, path, revision_id):
        # open transport relative to our base
        t = self.transport_from_client_path(path)
        control, extra_path = bzrdir.BzrDir.open_containing_from_transport(t)
        repo = control.open_repository()
        tmpf = tempfile.TemporaryFile()
        base_revision = revision.NULL_REVISION
        serializer.write_bundle(repo, revision_id, base_revision, tmpf)
        tmpf.seek(0)
        return SuccessfulSmartServerResponse((), tmpf.read())


class SmartServerIsReadonly(SmartServerRequest):
    # XXX: this request method belongs somewhere else.

    def do(self):
        if self._backing_transport.is_readonly():
            answer = b"yes"
        else:
            answer = b"no"
        return SuccessfulSmartServerResponse((answer,))


# In the 'info' attribute, we store whether this request is 'safe' to retry if
# we get a disconnect while reading the response. It can have the values:
#   read    This is purely a read request, so retrying it is perfectly ok.
#   idem    An idempotent write request. Something like 'put' where if you put
#           the same bytes twice you end up with the same final bytes.
#   semi    This is a request that isn't strictly idempotent, but doesn't
#           result in corruption if it is retried. This is for things like
#           'lock' and 'unlock'. If you call lock, it updates the disk
#           structure. If you fail to read the response, you won't be able to
#           use the lock, because you don't have the lock token. Calling lock
#           again will fail, because the lock is already taken. However, we
#           can't tell if the server received our request or not. If it didn't,
#           then retrying the request is fine, as it will actually do what we
#           want. If it did, we will interrupt the current operation, but we
#           are no worse off than interrupting the current operation because of
#           a ConnectionReset.
#   semivfs Similar to semi, but specific to a Virtual FileSystem request.
#   stream  This is a request that takes a stream that cannot be restarted if
#           consumed. This request is 'safe' in that if we determine the
#           connection is closed before we consume the stream, we can try
#           again.
#   mutate  State is updated in a way that replaying that request results in a
#           different state. For example 'append' writes more bytes to a given
#           file. If append succeeds, it moves the file pointer.
request_handlers = registry.Registry[bytes, SmartServerRequest]()
request_handlers.register_lazy(
    b"append", "breezy.bzr.smart.vfs", "AppendRequest", info="mutate"
)
request_handlers.register_lazy(
    b"Branch.break_lock",
    "breezy.bzr.smart.branch",
    "SmartServerBranchBreakLock",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.get_config_file",
    "breezy.bzr.smart.branch",
    "SmartServerBranchGetConfigFile",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.get_parent",
    "breezy.bzr.smart.branch",
    "SmartServerBranchGetParent",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.put_config_file",
    "breezy.bzr.smart.branch",
    "SmartServerBranchPutConfigFile",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.get_tags_bytes",
    "breezy.bzr.smart.branch",
    "SmartServerBranchGetTagsBytes",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.set_tags_bytes",
    "breezy.bzr.smart.branch",
    "SmartServerBranchSetTagsBytes",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.heads_to_fetch",
    "breezy.bzr.smart.branch",
    "SmartServerBranchHeadsToFetch",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.get_stacked_on_url",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestGetStackedOnURL",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.get_physical_lock_status",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestGetPhysicalLockStatus",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.last_revision_info",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestLastRevisionInfo",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.lock_write",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestLockWrite",
    info="semi",
)
request_handlers.register_lazy(
    b"Branch.revision_history",
    "breezy.bzr.smart.branch",
    "SmartServerRequestRevisionHistory",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.set_config_option",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestSetConfigOption",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.set_config_option_dict",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestSetConfigOptionDict",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.set_last_revision",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestSetLastRevision",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.set_last_revision_info",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestSetLastRevisionInfo",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.set_last_revision_ex",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestSetLastRevisionEx",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.set_parent_location",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestSetParentLocation",
    info="idem",
)
request_handlers.register_lazy(
    b"Branch.unlock",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestUnlock",
    info="semi",
)
request_handlers.register_lazy(
    b"Branch.revision_id_to_revno",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestRevisionIdToRevno",
    info="read",
)
request_handlers.register_lazy(
    b"Branch.get_all_reference_info",
    "breezy.bzr.smart.branch",
    "SmartServerBranchRequestGetAllReferenceInfo",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.checkout_metadir",
    "breezy.bzr.smart.bzrdir",
    "SmartServerBzrDirRequestCheckoutMetaDir",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.cloning_metadir",
    "breezy.bzr.smart.bzrdir",
    "SmartServerBzrDirRequestCloningMetaDir",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.create_branch",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestCreateBranch",
    info="semi",
)
request_handlers.register_lazy(
    b"BzrDir.create_repository",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestCreateRepository",
    info="semi",
)
request_handlers.register_lazy(
    b"BzrDir.find_repository",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestFindRepositoryV1",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.find_repositoryV2",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestFindRepositoryV2",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.find_repositoryV3",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestFindRepositoryV3",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.get_branches",
    "breezy.bzr.smart.bzrdir",
    "SmartServerBzrDirRequestGetBranches",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.get_config_file",
    "breezy.bzr.smart.bzrdir",
    "SmartServerBzrDirRequestConfigFile",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.destroy_branch",
    "breezy.bzr.smart.bzrdir",
    "SmartServerBzrDirRequestDestroyBranch",
    info="semi",
)
request_handlers.register_lazy(
    b"BzrDir.destroy_repository",
    "breezy.bzr.smart.bzrdir",
    "SmartServerBzrDirRequestDestroyRepository",
    info="semi",
)
request_handlers.register_lazy(
    b"BzrDir.has_workingtree",
    "breezy.bzr.smart.bzrdir",
    "SmartServerBzrDirRequestHasWorkingTree",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDirFormat.initialize",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestInitializeBzrDir",
    info="semi",
)
request_handlers.register_lazy(
    b"BzrDirFormat.initialize_ex_1.16",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestBzrDirInitializeEx",
    info="semi",
)
request_handlers.register_lazy(
    b"BzrDir.open",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestOpenBzrDir",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.open_2.1",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestOpenBzrDir_2_1",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.open_branch",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestOpenBranch",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.open_branchV2",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestOpenBranchV2",
    info="read",
)
request_handlers.register_lazy(
    b"BzrDir.open_branchV3",
    "breezy.bzr.smart.bzrdir",
    "SmartServerRequestOpenBranchV3",
    info="read",
)
request_handlers.register_lazy(
    b"delete", "breezy.bzr.smart.vfs", "DeleteRequest", info="semivfs"
)
request_handlers.register_lazy(
    b"get", "breezy.bzr.smart.vfs", "GetRequest", info="read"
)
request_handlers.register_lazy(
    b"get_bundle", "breezy.bzr.smart.request", "GetBundleRequest", info="read"
)
request_handlers.register_lazy(
    b"has", "breezy.bzr.smart.vfs", "HasRequest", info="read"
)
request_handlers.register_lazy(
    b"hello", "breezy.bzr.smart.request", "HelloRequest", info="read"
)
request_handlers.register_lazy(
    b"iter_files_recursive",
    "breezy.bzr.smart.vfs",
    "IterFilesRecursiveRequest",
    info="read",
)
request_handlers.register_lazy(
    b"list_dir", "breezy.bzr.smart.vfs", "ListDirRequest", info="read"
)
request_handlers.register_lazy(
    b"mkdir", "breezy.bzr.smart.vfs", "MkdirRequest", info="semivfs"
)
request_handlers.register_lazy(
    b"move", "breezy.bzr.smart.vfs", "MoveRequest", info="semivfs"
)
request_handlers.register_lazy(
    b"put", "breezy.bzr.smart.vfs", "PutRequest", info="idem"
)
request_handlers.register_lazy(
    b"put_non_atomic", "breezy.bzr.smart.vfs", "PutNonAtomicRequest", info="idem"
)
request_handlers.register_lazy(
    b"readv", "breezy.bzr.smart.vfs", "ReadvRequest", info="read"
)
request_handlers.register_lazy(
    b"rename", "breezy.bzr.smart.vfs", "RenameRequest", info="semivfs"
)
request_handlers.register_lazy(
    b"Repository.add_signature_text",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryAddSignatureText",
    info="idem",
)
request_handlers.register_lazy(
    b"Repository.annotate_file_revision",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryAnnotateFileRevision",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.all_revision_ids",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryAllRevisionIds",
    info="read",
)
request_handlers.register_lazy(
    b"PackRepository.autopack",
    "breezy.bzr.smart.packrepository",
    "SmartServerPackRepositoryAutopack",
    info="idem",
)
request_handlers.register_lazy(
    b"Repository.break_lock",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryBreakLock",
    info="idem",
)
request_handlers.register_lazy(
    b"Repository.gather_stats",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGatherStats",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.get_parent_map",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetParentMap",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.get_revision_graph",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetRevisionGraph",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.get_revision_signature_text",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetRevisionSignatureText",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.has_revision",
    "breezy.bzr.smart.repository",
    "SmartServerRequestHasRevision",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.has_signature_for_revision_id",
    "breezy.bzr.smart.repository",
    "SmartServerRequestHasSignatureForRevisionId",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.insert_stream",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryInsertStream",
    info="stream",
)
request_handlers.register_lazy(
    b"Repository.insert_stream_1.19",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryInsertStream_1_19",
    info="stream",
)
request_handlers.register_lazy(
    b"Repository.insert_stream_locked",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryInsertStreamLocked",
    info="stream",
)
request_handlers.register_lazy(
    b"Repository.is_shared",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryIsShared",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.iter_files_bytes",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryIterFilesBytes",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.lock_write",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryLockWrite",
    info="semi",
)
request_handlers.register_lazy(
    b"Repository.make_working_trees",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryMakeWorkingTrees",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.set_make_working_trees",
    "breezy.bzr.smart.repository",
    "SmartServerRepositorySetMakeWorkingTrees",
    info="idem",
)
request_handlers.register_lazy(
    b"Repository.unlock",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryUnlock",
    info="semi",
)
request_handlers.register_lazy(
    b"Repository.get_physical_lock_status",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetPhysicalLockStatus",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.get_rev_id_for_revno",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetRevIdForRevno",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.get_stream",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetStream",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.get_stream_1.19",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetStream_1_19",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.get_stream_for_missing_keys",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetStreamForMissingKeys",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.iter_revisions",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryIterRevisions",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.pack",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryPack",
    info="idem",
)
request_handlers.register_lazy(
    b"Repository.start_write_group",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryStartWriteGroup",
    info="semi",
)
request_handlers.register_lazy(
    b"Repository.commit_write_group",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryCommitWriteGroup",
    info="semi",
)
request_handlers.register_lazy(
    b"Repository.abort_write_group",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryAbortWriteGroup",
    info="semi",
)
request_handlers.register_lazy(
    b"Repository.check_write_group",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryCheckWriteGroup",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.reconcile",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryReconcile",
    info="idem",
)
request_handlers.register_lazy(
    b"Repository.revision_archive",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryRevisionArchive",
    info="read",
)
request_handlers.register_lazy(
    b"Repository.tarball",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryTarball",
    info="read",
)
request_handlers.register_lazy(
    b"VersionedFileRepository.get_serializer_format",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetSerializerFormat",
    info="read",
)
request_handlers.register_lazy(
    b"VersionedFileRepository.get_inventories",
    "breezy.bzr.smart.repository",
    "SmartServerRepositoryGetInventories",
    info="read",
)
request_handlers.register_lazy(
    b"rmdir", "breezy.bzr.smart.vfs", "RmdirRequest", info="semivfs"
)
request_handlers.register_lazy(
    b"stat", "breezy.bzr.smart.vfs", "StatRequest", info="read"
)
request_handlers.register_lazy(
    b"Transport.is_readonly",
    "breezy.bzr.smart.request",
    "SmartServerIsReadonly",
    info="read",
)
