607
599
# which is newer than a previously supplied older-than version.
608
600
# This indicates that some smart verb call is not guarded
609
601
# appropriately (it should simply not have been tried).
602
raise AssertionError(
611
603
"_remember_remote_is_before(%r) called, but "
612
604
"_remember_remote_is_before(%r) was called previously."
613
, version_tuple, self._remote_version_is_before)
614
if 'hpss' in debug.debug_flags:
615
ui.ui_factory.show_warning(
616
"_remember_remote_is_before(%r) called, but "
617
"_remember_remote_is_before(%r) was called previously."
618
% (version_tuple, self._remote_version_is_before))
605
% (version_tuple, self._remote_version_is_before))
620
606
self._remote_version_is_before = version_tuple
622
608
def protocol_version(self):
734
720
def _read_bytes(self, count):
735
721
"""See SmartClientStreamMedium._read_bytes."""
736
bytes_to_read = min(count, _MAX_READ_SIZE)
737
bytes = self._readable_pipe.read(bytes_to_read)
722
bytes = self._readable_pipe.read(count)
738
723
self._report_activity(len(bytes), 'read')
742
class SSHParams(object):
743
"""A set of parameters for starting a remote bzr via SSH."""
727
class SmartSSHClientMedium(SmartClientStreamMedium):
728
"""A client medium using SSH."""
745
730
def __init__(self, host, port=None, username=None, password=None,
746
bzr_remote_path='bzr'):
749
self.username = username
750
self.password = password
751
self.bzr_remote_path = bzr_remote_path
754
class SmartSSHClientMedium(SmartClientStreamMedium):
755
"""A client medium using SSH.
757
It delegates IO to a SmartClientSocketMedium or
758
SmartClientAlreadyConnectedSocketMedium (depending on platform).
761
def __init__(self, base, ssh_params, vendor=None):
731
base=None, vendor=None, bzr_remote_path=None):
762
732
"""Creates a client that will connect on the first use.
764
:param ssh_params: A SSHParams instance.
765
734
:param vendor: An optional override for the ssh vendor to use. See
766
735
bzrlib.transport.ssh for details on ssh vendors.
768
self._real_medium = None
769
self._ssh_params = ssh_params
770
# for the benefit of progress making a short description of this
772
self._scheme = 'bzr+ssh'
737
self._connected = False
739
self._password = password
741
self._username = username
773
742
# SmartClientStreamMedium stores the repr of this object in its
774
743
# _DebugCounter so we have to store all the values used in our repr
775
744
# method before calling the super init.
776
745
SmartClientStreamMedium.__init__(self, base)
746
self._read_from = None
747
self._ssh_connection = None
777
748
self._vendor = vendor
778
self._ssh_connection = None
749
self._write_to = None
750
self._bzr_remote_path = bzr_remote_path
751
# for the benefit of progress making a short description of this
753
self._scheme = 'bzr+ssh'
780
755
def __repr__(self):
781
if self._ssh_params.port is None:
784
maybe_port = ':%s' % self._ssh_params.port
785
return "%s(%s://%s@%s%s/)" % (
756
return "%s(connected=%r, username=%r, host=%r, port=%r)" % (
786
757
self.__class__.__name__,
788
self._ssh_params.username,
789
self._ssh_params.host,
792
763
def _accept_bytes(self, bytes):
793
764
"""See SmartClientStreamMedium.accept_bytes."""
794
765
self._ensure_connection()
795
self._real_medium.accept_bytes(bytes)
766
self._write_to.write(bytes)
767
self._report_activity(len(bytes), 'write')
797
769
def disconnect(self):
798
770
"""See SmartClientMedium.disconnect()."""
799
if self._real_medium is not None:
800
self._real_medium.disconnect()
801
self._real_medium = None
802
if self._ssh_connection is not None:
803
self._ssh_connection.close()
804
self._ssh_connection = None
771
if not self._connected:
773
self._read_from.close()
774
self._write_to.close()
775
self._ssh_connection.close()
776
self._connected = False
806
778
def _ensure_connection(self):
807
779
"""Connect this medium if not already connected."""
808
if self._real_medium is not None:
810
782
if self._vendor is None:
811
783
vendor = ssh._get_ssh_vendor()
813
785
vendor = self._vendor
814
self._ssh_connection = vendor.connect_ssh(self._ssh_params.username,
815
self._ssh_params.password, self._ssh_params.host,
816
self._ssh_params.port,
817
command=[self._ssh_params.bzr_remote_path, 'serve', '--inet',
786
self._ssh_connection = vendor.connect_ssh(self._username,
787
self._password, self._host, self._port,
788
command=[self._bzr_remote_path, 'serve', '--inet',
818
789
'--directory=/', '--allow-writes'])
819
io_kind, io_object = self._ssh_connection.get_sock_or_pipes()
820
if io_kind == 'socket':
821
self._real_medium = SmartClientAlreadyConnectedSocketMedium(
822
self.base, io_object)
823
elif io_kind == 'pipes':
824
read_from, write_to = io_object
825
self._real_medium = SmartSimplePipesClientMedium(
826
read_from, write_to, self.base)
828
raise AssertionError(
829
"Unexpected io_kind %r from %r"
830
% (io_kind, self._ssh_connection))
790
self._read_from, self._write_to = \
791
self._ssh_connection.get_filelike_channels()
792
self._connected = True
832
794
def _flush(self):
833
795
"""See SmartClientStreamMedium._flush()."""
834
self._real_medium._flush()
796
self._write_to.flush()
836
798
def _read_bytes(self, count):
837
799
"""See SmartClientStreamMedium.read_bytes."""
838
if self._real_medium is None:
800
if not self._connected:
839
801
raise errors.MediumNotConnected(self)
840
return self._real_medium.read_bytes(count)
802
bytes_to_read = min(count, _MAX_READ_SIZE)
803
bytes = self._read_from.read(bytes_to_read)
804
self._report_activity(len(bytes), 'read')
843
808
# Port 4155 is the default port for bzr://, registered with IANA.
845
810
BZR_DEFAULT_PORT = 4155
848
class SmartClientSocketMedium(SmartClientStreamMedium):
849
"""A client medium using a socket.
851
This class isn't usable directly. Use one of its subclasses instead.
813
class SmartTCPClientMedium(SmartClientStreamMedium):
814
"""A client medium using TCP."""
854
def __init__(self, base):
816
def __init__(self, host, port, base):
817
"""Creates a client that will connect on the first use."""
855
818
SmartClientStreamMedium.__init__(self, base)
819
self._connected = False
856
822
self._socket = None
857
self._connected = False
859
824
def _accept_bytes(self, bytes):
860
825
"""See SmartClientMedium.accept_bytes."""
861
826
self._ensure_connection()
862
827
osutils.send_all(self._socket, bytes, self._report_activity)
864
def _ensure_connection(self):
865
"""Connect this medium if not already connected."""
866
raise NotImplementedError(self._ensure_connection)
869
"""See SmartClientStreamMedium._flush().
871
For sockets we do no flushing. For TCP sockets we may want to turn off
872
TCP_NODELAY and add a means to do a flush, but that can be done in the
876
def _read_bytes(self, count):
877
"""See SmartClientMedium.read_bytes."""
878
if not self._connected:
879
raise errors.MediumNotConnected(self)
880
return osutils.read_bytes_from_socket(
881
self._socket, self._report_activity)
883
829
def disconnect(self):
884
830
"""See SmartClientMedium.disconnect()."""
885
831
if not self._connected:
937
873
(self._host, port, err_msg))
938
874
self._connected = True
941
class SmartClientAlreadyConnectedSocketMedium(SmartClientSocketMedium):
942
"""A client medium for an already connected socket.
944
Note that this class will assume it "owns" the socket, so it will close it
945
when its disconnect method is called.
948
def __init__(self, base, sock):
949
SmartClientSocketMedium.__init__(self, base)
951
self._connected = True
953
def _ensure_connection(self):
954
# Already connected, by definition! So nothing to do.
877
"""See SmartClientStreamMedium._flush().
879
For TCP we do no flushing. We may want to turn off TCP_NODELAY and
880
add a means to do a flush, but that can be done in the future.
883
def _read_bytes(self, count):
884
"""See SmartClientMedium.read_bytes."""
885
if not self._connected:
886
raise errors.MediumNotConnected(self)
887
# We ignore the desired_count because on sockets it's more efficient to
888
# read large chunks (of _MAX_READ_SIZE bytes) at a time.
890
bytes = osutils.until_no_eintr(self._socket.recv, _MAX_READ_SIZE)
891
except socket.error, e:
892
if len(e.args) and e.args[0] == errno.ECONNRESET:
893
# Callers expect an empty string in that case
898
self._report_activity(len(bytes), 'read')
958
902
class SmartClientStreamMediumRequest(SmartClientMediumRequest):