738
734
def _read_bytes(self, count):
739
735
"""See SmartClientStreamMedium._read_bytes."""
740
bytes = osutils.until_no_eintr(self._readable_pipe.read, count)
736
bytes_to_read = min(count, _MAX_READ_SIZE)
737
bytes = self._readable_pipe.read(bytes_to_read)
741
738
self._report_activity(len(bytes), 'read')
742
class SSHParams(object):
743
"""A set of parameters for starting a remote bzr via SSH."""
745
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
745
754
class SmartSSHClientMedium(SmartClientStreamMedium):
746
"""A client medium using SSH."""
755
"""A client medium using SSH.
757
It delegates IO to a SmartClientSocketMedium or
758
SmartClientAlreadyConnectedSocketMedium (depending on platform).
748
def __init__(self, host, port=None, username=None, password=None,
749
base=None, vendor=None, bzr_remote_path=None):
761
def __init__(self, base, ssh_params, vendor=None):
750
762
"""Creates a client that will connect on the first use.
764
:param ssh_params: A SSHParams instance.
752
765
:param vendor: An optional override for the ssh vendor to use. See
753
766
bzrlib.transport.ssh for details on ssh vendors.
755
self._connected = False
757
self._password = password
759
self._username = username
768
self._real_medium = None
769
self._ssh_params = ssh_params
760
770
# for the benefit of progress making a short description of this
762
772
self._scheme = 'bzr+ssh'
764
774
# _DebugCounter so we have to store all the values used in our repr
765
775
# method before calling the super init.
766
776
SmartClientStreamMedium.__init__(self, base)
767
self._read_from = None
777
self._vendor = vendor
768
778
self._ssh_connection = None
769
self._vendor = vendor
770
self._write_to = None
771
self._bzr_remote_path = bzr_remote_path
773
780
def __repr__(self):
774
if self._port is None:
781
if self._ssh_params.port is None:
777
maybe_port = ':%s' % self._port
784
maybe_port = ':%s' % self._ssh_params.port
778
785
return "%s(%s://%s@%s%s/)" % (
779
786
self.__class__.__name__,
788
self._ssh_params.username,
789
self._ssh_params.host,
785
792
def _accept_bytes(self, bytes):
786
793
"""See SmartClientStreamMedium.accept_bytes."""
787
794
self._ensure_connection()
788
self._write_to.write(bytes)
789
self._report_activity(len(bytes), 'write')
795
self._real_medium.accept_bytes(bytes)
791
797
def disconnect(self):
792
798
"""See SmartClientMedium.disconnect()."""
793
if not self._connected:
795
self._read_from.close()
796
self._write_to.close()
797
self._ssh_connection.close()
798
self._connected = False
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
800
806
def _ensure_connection(self):
801
807
"""Connect this medium if not already connected."""
808
if self._real_medium is not None:
804
810
if self._vendor is None:
805
811
vendor = ssh._get_ssh_vendor()
807
813
vendor = self._vendor
808
self._ssh_connection = vendor.connect_ssh(self._username,
809
self._password, self._host, self._port,
810
command=[self._bzr_remote_path, 'serve', '--inet',
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',
811
818
'--directory=/', '--allow-writes'])
812
self._read_from, self._write_to = \
813
self._ssh_connection.get_filelike_channels()
814
self._connected = True
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))
816
832
def _flush(self):
817
833
"""See SmartClientStreamMedium._flush()."""
818
self._write_to.flush()
834
self._real_medium._flush()
820
836
def _read_bytes(self, count):
821
837
"""See SmartClientStreamMedium.read_bytes."""
822
if not self._connected:
838
if self._real_medium is None:
823
839
raise errors.MediumNotConnected(self)
824
bytes_to_read = min(count, _MAX_READ_SIZE)
825
bytes = self._read_from.read(bytes_to_read)
826
self._report_activity(len(bytes), 'read')
840
return self._real_medium.read_bytes(count)
830
843
# Port 4155 is the default port for bzr://, registered with IANA.
832
845
BZR_DEFAULT_PORT = 4155
835
class SmartTCPClientMedium(SmartClientStreamMedium):
836
"""A client medium using TCP."""
848
class SmartClientSocketMedium(SmartClientStreamMedium):
849
"""A client medium using a socket.
851
This class isn't usable directly. Use one of its subclasses instead.
838
def __init__(self, host, port, base):
839
"""Creates a client that will connect on the first use."""
854
def __init__(self, base):
840
855
SmartClientStreamMedium.__init__(self, base)
841
857
self._connected = False
846
859
def _accept_bytes(self, bytes):
847
860
"""See SmartClientMedium.accept_bytes."""
848
861
self._ensure_connection()
849
862
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)
851
883
def disconnect(self):
852
884
"""See SmartClientMedium.disconnect()."""
853
885
if not self._connected:
895
937
(self._host, port, err_msg))
896
938
self._connected = True
899
"""See SmartClientStreamMedium._flush().
901
For TCP we do no flushing. We may want to turn off TCP_NODELAY and
902
add a means to do a flush, but that can be done in the future.
905
def _read_bytes(self, count):
906
"""See SmartClientMedium.read_bytes."""
907
if not self._connected:
908
raise errors.MediumNotConnected(self)
909
return osutils.read_bytes_from_socket(
910
self._socket, self._report_activity)
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.
913
958
class SmartClientStreamMediumRequest(SmartClientMediumRequest):