251
193
def _write_protocol_version(self):
252
194
r"""Write any prefixes this protocol requires.
254
196
Version two sends the value of RESPONSE_VERSION_TWO.
256
self._write_func(self.response_marker)
258
def _send_response(self, response):
259
"""Send a smart server response down the output stream."""
261
raise AssertionError('response already sent')
262
self._finished = True
263
self._write_protocol_version()
264
self._write_success_or_failure_prefix(response)
265
self._write_func(_encode_tuple(response.args))
266
if response.body is not None:
267
if not isinstance(response.body, str):
268
raise AssertionError('body must be a str')
269
if not (response.body_stream is None):
270
raise AssertionError(
271
'body_stream and body cannot both be set')
272
bytes = self._encode_bulk_data(response.body)
273
self._write_func(bytes)
274
elif response.body_stream is not None:
275
_send_stream(response.body_stream, self._write_func)
278
def _send_stream(stream, write_func):
279
write_func('chunked\n')
280
_send_chunks(stream, write_func)
284
def _send_chunks(stream, write_func):
286
if isinstance(chunk, str):
287
bytes = "%x\n%s" % (len(chunk), chunk)
289
elif isinstance(chunk, request.FailedSmartServerResponse):
291
_send_chunks(chunk.args, write_func)
294
raise errors.BzrError(
295
'Chunks must be str or FailedSmartServerResponse, got %r'
299
class _NeedMoreBytes(Exception):
300
"""Raise this inside a _StatefulDecoder to stop decoding until more bytes
304
def __init__(self, count=None):
307
:param count: the total number of bytes needed by the current state.
308
May be None if the number of bytes needed is unknown.
313
class _StatefulDecoder(object):
314
"""Base class for writing state machines to decode byte streams.
316
Subclasses should provide a self.state_accept attribute that accepts bytes
317
and, if appropriate, updates self.state_accept to a different function.
318
accept_bytes will call state_accept as often as necessary to make sure the
319
state machine has progressed as far as possible before it returns.
321
See ProtocolThreeDecoder for an example subclass.
198
self._write_func(RESPONSE_VERSION_TWO)
201
class LengthPrefixedBodyDecoder(object):
202
"""Decodes the length-prefixed bulk data."""
324
204
def __init__(self):
205
self.bytes_left = None
325
206
self.finished_reading = False
326
self._in_buffer_list = []
327
self._in_buffer_len = 0
328
207
self.unused_data = ''
329
self.bytes_left = None
330
self._number_needed_bytes = None
332
def _get_in_buffer(self):
333
if len(self._in_buffer_list) == 1:
334
return self._in_buffer_list[0]
335
in_buffer = ''.join(self._in_buffer_list)
336
if len(in_buffer) != self._in_buffer_len:
337
raise AssertionError(
338
"Length of buffer did not match expected value: %s != %s"
339
% self._in_buffer_len, len(in_buffer))
340
self._in_buffer_list = [in_buffer]
343
def _get_in_bytes(self, count):
344
"""Grab X bytes from the input_buffer.
346
Callers should have already checked that self._in_buffer_len is >
347
count. Note, this does not consume the bytes from the buffer. The
348
caller will still need to call _get_in_buffer() and then
349
_set_in_buffer() if they actually need to consume the bytes.
351
# check if we can yield the bytes from just the first entry in our list
352
if len(self._in_buffer_list) == 0:
353
raise AssertionError('Callers must be sure we have buffered bytes'
354
' before calling _get_in_bytes')
355
if len(self._in_buffer_list[0]) > count:
356
return self._in_buffer_list[0][:count]
357
# We can't yield it from the first buffer, so collapse all buffers, and
359
in_buf = self._get_in_buffer()
360
return in_buf[:count]
362
def _set_in_buffer(self, new_buf):
363
if new_buf is not None:
364
self._in_buffer_list = [new_buf]
365
self._in_buffer_len = len(new_buf)
367
self._in_buffer_list = []
368
self._in_buffer_len = 0
208
self.state_accept = self._state_accept_expecting_length
209
self.state_read = self._state_read_no_data
211
self._trailer_buffer = ''
370
213
def accept_bytes(self, bytes):
371
214
"""Decode as much of bytes as possible.
377
220
data will be appended to self.unused_data.
379
222
# accept_bytes is allowed to change the state
380
self._number_needed_bytes = None
381
# lsprof puts a very large amount of time on this specific call for
383
self._in_buffer_list.append(bytes)
384
self._in_buffer_len += len(bytes)
386
# Run the function for the current state.
223
current_state = self.state_accept
224
self.state_accept(bytes)
225
while current_state != self.state_accept:
387
226
current_state = self.state_accept
389
while current_state != self.state_accept:
390
# The current state has changed. Run the function for the new
391
# current state, so that it can:
392
# - decode any unconsumed bytes left in a buffer, and
393
# - signal how many more bytes are expected (via raising
395
current_state = self.state_accept
397
except _NeedMoreBytes, e:
398
self._number_needed_bytes = e.count
401
class ChunkedBodyDecoder(_StatefulDecoder):
402
"""Decoder for chunked body data.
404
This is very similar the HTTP's chunked encoding. See the description of
405
streamed body data in `doc/developers/network-protocol.txt` for details.
409
_StatefulDecoder.__init__(self)
410
self.state_accept = self._state_accept_expecting_header
411
self.chunk_in_progress = None
412
self.chunks = collections.deque()
414
self.error_in_progress = None
416
def next_read_size(self):
417
# Note: the shortest possible chunk is 2 bytes: '0\n', and the
418
# end-of-body marker is 4 bytes: 'END\n'.
419
if self.state_accept == self._state_accept_reading_chunk:
420
# We're expecting more chunk content. So we're expecting at least
421
# the rest of this chunk plus an END chunk.
422
return self.bytes_left + 4
423
elif self.state_accept == self._state_accept_expecting_length:
424
if self._in_buffer_len == 0:
425
# We're expecting a chunk length. There's at least two bytes
426
# left: a digit plus '\n'.
429
# We're in the middle of reading a chunk length. So there's at
430
# least one byte left, the '\n' that terminates the length.
432
elif self.state_accept == self._state_accept_reading_unused:
434
elif self.state_accept == self._state_accept_expecting_header:
435
return max(0, len('chunked\n') - self._in_buffer_len)
437
raise AssertionError("Impossible state: %r" % (self.state_accept,))
439
def read_next_chunk(self):
441
return self.chunks.popleft()
445
def _extract_line(self):
446
in_buf = self._get_in_buffer()
447
pos = in_buf.find('\n')
449
# We haven't read a complete line yet, so request more bytes before
451
raise _NeedMoreBytes(1)
453
# Trim the prefix (including '\n' delimiter) from the _in_buffer.
454
self._set_in_buffer(in_buf[pos+1:])
458
self.unused_data = self._get_in_buffer()
459
self._in_buffer_list = []
460
self._in_buffer_len = 0
461
self.state_accept = self._state_accept_reading_unused
463
error_args = tuple(self.error_in_progress)
464
self.chunks.append(request.FailedSmartServerResponse(error_args))
465
self.error_in_progress = None
466
self.finished_reading = True
468
def _state_accept_expecting_header(self):
469
prefix = self._extract_line()
470
if prefix == 'chunked':
471
self.state_accept = self._state_accept_expecting_length
473
raise errors.SmartProtocolError(
474
'Bad chunked body header: "%s"' % (prefix,))
476
def _state_accept_expecting_length(self):
477
prefix = self._extract_line()
480
self.error_in_progress = []
481
self._state_accept_expecting_length()
483
elif prefix == 'END':
484
# We've read the end-of-body marker.
485
# Any further bytes are unused data, including the bytes left in
490
self.bytes_left = int(prefix, 16)
491
self.chunk_in_progress = ''
492
self.state_accept = self._state_accept_reading_chunk
494
def _state_accept_reading_chunk(self):
495
in_buf = self._get_in_buffer()
496
in_buffer_len = len(in_buf)
497
self.chunk_in_progress += in_buf[:self.bytes_left]
498
self._set_in_buffer(in_buf[self.bytes_left:])
499
self.bytes_left -= in_buffer_len
500
if self.bytes_left <= 0:
501
# Finished with chunk
502
self.bytes_left = None
504
self.error_in_progress.append(self.chunk_in_progress)
506
self.chunks.append(self.chunk_in_progress)
507
self.chunk_in_progress = None
508
self.state_accept = self._state_accept_expecting_length
510
def _state_accept_reading_unused(self):
511
self.unused_data += self._get_in_buffer()
512
self._in_buffer_list = []
515
class LengthPrefixedBodyDecoder(_StatefulDecoder):
516
"""Decodes the length-prefixed bulk data."""
519
_StatefulDecoder.__init__(self)
520
self.state_accept = self._state_accept_expecting_length
521
self.state_read = self._state_read_no_data
523
self._trailer_buffer = ''
227
self.state_accept('')
525
229
def next_read_size(self):
526
230
if self.bytes_left is not None:
791
422
def _write_protocol_version(self):
792
423
"""Write any prefixes this protocol requires.
794
425
Version one doesn't send protocol versions.
798
429
class SmartClientRequestProtocolTwo(SmartClientRequestProtocolOne):
799
430
"""Version two of the client side of the smart protocol.
801
432
This prefixes the request with the value of REQUEST_VERSION_TWO.
804
response_marker = RESPONSE_VERSION_TWO
805
request_marker = REQUEST_VERSION_TWO
807
435
def read_response_tuple(self, expect_body=False):
808
436
"""Read a response tuple from the wire.
810
438
This should only be called once.
812
440
version = self._request.read_line()
813
if version != self.response_marker:
814
self._request.finished_reading()
815
raise errors.UnexpectedProtocolVersionMarker(version)
816
response_status = self._request.read_line()
817
result = SmartClientRequestProtocolOne._read_response_tuple(self)
818
self._response_is_unknown_method(result)
819
if response_status == 'success\n':
820
self.response_status = True
822
self._request.finished_reading()
824
elif response_status == 'failed\n':
825
self.response_status = False
826
self._request.finished_reading()
827
raise errors.ErrorFromSmartServer(result)
441
if version != RESPONSE_VERSION_TWO:
442
raise errors.SmartProtocolError('bad protocol marker %r' % version)
443
response_status = self._recv_line()
444
if response_status not in ('success\n', 'failed\n'):
829
445
raise errors.SmartProtocolError(
830
446
'bad protocol status %r' % response_status)
447
self.response_status = response_status == 'success\n'
448
return SmartClientRequestProtocolOne.read_response_tuple(self, expect_body)
832
450
def _write_protocol_version(self):
833
"""Write any prefixes this protocol requires.
451
r"""Write any prefixes this protocol requires.
835
453
Version two sends the value of REQUEST_VERSION_TWO.
837
self._request.accept_bytes(self.request_marker)
839
def read_streamed_body(self):
840
"""Read bytes from the body, decoding into a byte stream.
842
# Read no more than 64k at a time so that we don't risk error 10055 (no
843
# buffer space available) on Windows.
844
_body_decoder = ChunkedBodyDecoder()
845
while not _body_decoder.finished_reading:
846
bytes = self._request.read_bytes(_body_decoder.next_read_size())
848
# end of file encountered reading from server
849
raise errors.ConnectionReset(
850
"Connection lost while reading streamed body.")
851
_body_decoder.accept_bytes(bytes)
852
for body_bytes in iter(_body_decoder.read_next_chunk, None):
853
if 'hpss' in debug.debug_flags and type(body_bytes) is str:
854
mutter(' %d byte chunk read',
857
self._request.finished_reading()
860
def build_server_protocol_three(backing_transport, write_func,
862
request_handler = request.SmartServerRequestHandler(
863
backing_transport, commands=request.request_handlers,
864
root_client_path=root_client_path)
865
responder = ProtocolThreeResponder(write_func)
866
message_handler = message.ConventionalRequestHandler(request_handler, responder)
867
return ProtocolThreeDecoder(message_handler)
870
class ProtocolThreeDecoder(_StatefulDecoder):
872
response_marker = RESPONSE_VERSION_THREE
873
request_marker = REQUEST_VERSION_THREE
875
def __init__(self, message_handler, expect_version_marker=False):
876
_StatefulDecoder.__init__(self)
877
self._has_dispatched = False
879
if expect_version_marker:
880
self.state_accept = self._state_accept_expecting_protocol_version
881
# We're expecting at least the protocol version marker + some
883
self._number_needed_bytes = len(MESSAGE_VERSION_THREE) + 4
885
self.state_accept = self._state_accept_expecting_headers
886
self._number_needed_bytes = 4
887
self.decoding_failed = False
888
self.request_handler = self.message_handler = message_handler
890
def accept_bytes(self, bytes):
891
self._number_needed_bytes = None
893
_StatefulDecoder.accept_bytes(self, bytes)
894
except KeyboardInterrupt:
896
except errors.SmartMessageHandlerError, exception:
897
# We do *not* set self.decoding_failed here. The message handler
898
# has raised an error, but the decoder is still able to parse bytes
899
# and determine when this message ends.
900
log_exception_quietly()
901
self.message_handler.protocol_error(exception.exc_value)
902
# The state machine is ready to continue decoding, but the
903
# exception has interrupted the loop that runs the state machine.
904
# So we call accept_bytes again to restart it.
905
self.accept_bytes('')
906
except Exception, exception:
907
# The decoder itself has raised an exception. We cannot continue
909
self.decoding_failed = True
910
if isinstance(exception, errors.UnexpectedProtocolVersionMarker):
911
# This happens during normal operation when the client tries a
912
# protocol version the server doesn't understand, so no need to
913
# log a traceback every time.
914
# Note that this can only happen when
915
# expect_version_marker=True, which is only the case on the
919
log_exception_quietly()
920
self.message_handler.protocol_error(exception)
922
def _extract_length_prefixed_bytes(self):
923
if self._in_buffer_len < 4:
924
# A length prefix by itself is 4 bytes, and we don't even have that
926
raise _NeedMoreBytes(4)
927
(length,) = struct.unpack('!L', self._get_in_bytes(4))
928
end_of_bytes = 4 + length
929
if self._in_buffer_len < end_of_bytes:
930
# We haven't yet read as many bytes as the length-prefix says there
932
raise _NeedMoreBytes(end_of_bytes)
933
# Extract the bytes from the buffer.
934
in_buf = self._get_in_buffer()
935
bytes = in_buf[4:end_of_bytes]
936
self._set_in_buffer(in_buf[end_of_bytes:])
939
def _extract_prefixed_bencoded_data(self):
940
prefixed_bytes = self._extract_length_prefixed_bytes()
942
decoded = bdecode_as_tuple(prefixed_bytes)
944
raise errors.SmartProtocolError(
945
'Bytes %r not bencoded' % (prefixed_bytes,))
948
def _extract_single_byte(self):
949
if self._in_buffer_len == 0:
950
# The buffer is empty
951
raise _NeedMoreBytes(1)
952
in_buf = self._get_in_buffer()
954
self._set_in_buffer(in_buf[1:])
957
def _state_accept_expecting_protocol_version(self):
958
needed_bytes = len(MESSAGE_VERSION_THREE) - self._in_buffer_len
959
in_buf = self._get_in_buffer()
961
# We don't have enough bytes to check if the protocol version
962
# marker is right. But we can check if it is already wrong by
963
# checking that the start of MESSAGE_VERSION_THREE matches what
965
# [In fact, if the remote end isn't bzr we might never receive
966
# len(MESSAGE_VERSION_THREE) bytes. So if the bytes we have so far
967
# are wrong then we should just raise immediately rather than
969
if not MESSAGE_VERSION_THREE.startswith(in_buf):
970
# We have enough bytes to know the protocol version is wrong
971
raise errors.UnexpectedProtocolVersionMarker(in_buf)
972
raise _NeedMoreBytes(len(MESSAGE_VERSION_THREE))
973
if not in_buf.startswith(MESSAGE_VERSION_THREE):
974
raise errors.UnexpectedProtocolVersionMarker(in_buf)
975
self._set_in_buffer(in_buf[len(MESSAGE_VERSION_THREE):])
976
self.state_accept = self._state_accept_expecting_headers
978
def _state_accept_expecting_headers(self):
979
decoded = self._extract_prefixed_bencoded_data()
980
if type(decoded) is not dict:
981
raise errors.SmartProtocolError(
982
'Header object %r is not a dict' % (decoded,))
983
self.state_accept = self._state_accept_expecting_message_part
985
self.message_handler.headers_received(decoded)
987
raise errors.SmartMessageHandlerError(sys.exc_info())
989
def _state_accept_expecting_message_part(self):
990
message_part_kind = self._extract_single_byte()
991
if message_part_kind == 'o':
992
self.state_accept = self._state_accept_expecting_one_byte
993
elif message_part_kind == 's':
994
self.state_accept = self._state_accept_expecting_structure
995
elif message_part_kind == 'b':
996
self.state_accept = self._state_accept_expecting_bytes
997
elif message_part_kind == 'e':
1000
raise errors.SmartProtocolError(
1001
'Bad message kind byte: %r' % (message_part_kind,))
1003
def _state_accept_expecting_one_byte(self):
1004
byte = self._extract_single_byte()
1005
self.state_accept = self._state_accept_expecting_message_part
1007
self.message_handler.byte_part_received(byte)
1009
raise errors.SmartMessageHandlerError(sys.exc_info())
1011
def _state_accept_expecting_bytes(self):
1012
# XXX: this should not buffer whole message part, but instead deliver
1013
# the bytes as they arrive.
1014
prefixed_bytes = self._extract_length_prefixed_bytes()
1015
self.state_accept = self._state_accept_expecting_message_part
1017
self.message_handler.bytes_part_received(prefixed_bytes)
1019
raise errors.SmartMessageHandlerError(sys.exc_info())
1021
def _state_accept_expecting_structure(self):
1022
structure = self._extract_prefixed_bencoded_data()
1023
self.state_accept = self._state_accept_expecting_message_part
1025
self.message_handler.structure_part_received(structure)
1027
raise errors.SmartMessageHandlerError(sys.exc_info())
1030
self.unused_data = self._get_in_buffer()
1031
self._set_in_buffer(None)
1032
self.state_accept = self._state_accept_reading_unused
1034
self.message_handler.end_received()
1036
raise errors.SmartMessageHandlerError(sys.exc_info())
1038
def _state_accept_reading_unused(self):
1039
self.unused_data = self._get_in_buffer()
1040
self._set_in_buffer(None)
1042
def next_read_size(self):
1043
if self.state_accept == self._state_accept_reading_unused:
1045
elif self.decoding_failed:
1046
# An exception occured while processing this message, probably from
1047
# self.message_handler. We're not sure that this state machine is
1048
# in a consistent state, so just signal that we're done (i.e. give
1052
if self._number_needed_bytes is not None:
1053
return self._number_needed_bytes - self._in_buffer_len
1055
raise AssertionError("don't know how many bytes are expected!")
1058
class _ProtocolThreeEncoder(object):
1060
response_marker = request_marker = MESSAGE_VERSION_THREE
1062
def __init__(self, write_func):
1064
self._real_write_func = write_func
1066
def _write_func(self, bytes):
1067
self._buf.append(bytes)
1068
if len(self._buf) > 100:
1073
self._real_write_func(''.join(self._buf))
1076
def _serialise_offsets(self, offsets):
1077
"""Serialise a readv offset list."""
1079
for start, length in offsets:
1080
txt.append('%d,%d' % (start, length))
1081
return '\n'.join(txt)
1083
def _write_protocol_version(self):
1084
self._write_func(MESSAGE_VERSION_THREE)
1086
def _write_prefixed_bencode(self, structure):
1087
bytes = bencode(structure)
1088
self._write_func(struct.pack('!L', len(bytes)))
1089
self._write_func(bytes)
1091
def _write_headers(self, headers):
1092
self._write_prefixed_bencode(headers)
1094
def _write_structure(self, args):
1095
self._write_func('s')
1098
if type(arg) is unicode:
1099
utf8_args.append(arg.encode('utf8'))
1101
utf8_args.append(arg)
1102
self._write_prefixed_bencode(utf8_args)
1104
def _write_end(self):
1105
self._write_func('e')
1108
def _write_prefixed_body(self, bytes):
1109
self._write_func('b')
1110
self._write_func(struct.pack('!L', len(bytes)))
1111
self._write_func(bytes)
1113
def _write_chunked_body_start(self):
1114
self._write_func('oC')
1116
def _write_error_status(self):
1117
self._write_func('oE')
1119
def _write_success_status(self):
1120
self._write_func('oS')
1123
class ProtocolThreeResponder(_ProtocolThreeEncoder):
1125
def __init__(self, write_func):
1126
_ProtocolThreeEncoder.__init__(self, write_func)
1127
self.response_sent = False
1128
self._headers = {'Software version': bzrlib.__version__}
1130
def send_error(self, exception):
1131
if self.response_sent:
1132
raise AssertionError(
1133
"send_error(%s) called, but response already sent."
1135
if isinstance(exception, errors.UnknownSmartMethod):
1136
failure = request.FailedSmartServerResponse(
1137
('UnknownMethod', exception.verb))
1138
self.send_response(failure)
1140
self.response_sent = True
1141
self._write_protocol_version()
1142
self._write_headers(self._headers)
1143
self._write_error_status()
1144
self._write_structure(('error', str(exception)))
1147
def send_response(self, response):
1148
if self.response_sent:
1149
raise AssertionError(
1150
"send_response(%r) called, but response already sent."
1152
self.response_sent = True
1153
self._write_protocol_version()
1154
self._write_headers(self._headers)
1155
if response.is_successful():
1156
self._write_success_status()
1158
self._write_error_status()
1159
self._write_structure(response.args)
1160
if response.body is not None:
1161
self._write_prefixed_body(response.body)
1162
elif response.body_stream is not None:
1163
for exc_info, chunk in _iter_with_errors(response.body_stream):
1164
if exc_info is not None:
1165
self._write_error_status()
1166
error_struct = request._translate_error(exc_info[1])
1167
self._write_structure(error_struct)
1170
if isinstance(chunk, request.FailedSmartServerResponse):
1171
self._write_error_status()
1172
self._write_structure(chunk.args)
1174
self._write_prefixed_body(chunk)
1178
def _iter_with_errors(iterable):
1179
"""Handle errors from iterable.next().
1183
for exc_info, value in _iter_with_errors(iterable):
1186
This is a safer alternative to::
1189
for value in iterable:
1194
Because the latter will catch errors from the for-loop body, not just
1197
If an error occurs, exc_info will be a exc_info tuple, and the generator
1198
will terminate. Otherwise exc_info will be None, and value will be the
1199
value from iterable.next(). Note that KeyboardInterrupt and SystemExit
1200
will not be itercepted.
1202
iterator = iter(iterable)
1205
yield None, iterator.next()
1206
except StopIteration:
1208
except (KeyboardInterrupt, SystemExit):
1211
yield sys.exc_info(), None
1215
class ProtocolThreeRequester(_ProtocolThreeEncoder, Requester):
1217
def __init__(self, medium_request):
1218
_ProtocolThreeEncoder.__init__(self, medium_request.accept_bytes)
1219
self._medium_request = medium_request
1222
def set_headers(self, headers):
1223
self._headers = headers.copy()
1225
def call(self, *args):
1226
if 'hpss' in debug.debug_flags:
1227
mutter('hpss call: %s', repr(args)[1:-1])
1228
base = getattr(self._medium_request._medium, 'base', None)
1229
if base is not None:
1230
mutter(' (to %s)', base)
1231
self._request_start_time = time.time()
1232
self._write_protocol_version()
1233
self._write_headers(self._headers)
1234
self._write_structure(args)
1236
self._medium_request.finished_writing()
1238
def call_with_body_bytes(self, args, body):
1239
"""Make a remote call of args with body bytes 'body'.
1241
After calling this, call read_response_tuple to find the result out.
1243
if 'hpss' in debug.debug_flags:
1244
mutter('hpss call w/body: %s (%r...)', repr(args)[1:-1], body[:20])
1245
path = getattr(self._medium_request._medium, '_path', None)
1246
if path is not None:
1247
mutter(' (to %s)', path)
1248
mutter(' %d bytes', len(body))
1249
self._request_start_time = time.time()
1250
self._write_protocol_version()
1251
self._write_headers(self._headers)
1252
self._write_structure(args)
1253
self._write_prefixed_body(body)
1255
self._medium_request.finished_writing()
1257
def call_with_body_readv_array(self, args, body):
1258
"""Make a remote call with a readv array.
1260
The body is encoded with one line per readv offset pair. The numbers in
1261
each pair are separated by a comma, and no trailing \n is emitted.
1263
if 'hpss' in debug.debug_flags:
1264
mutter('hpss call w/readv: %s', repr(args)[1:-1])
1265
path = getattr(self._medium_request._medium, '_path', None)
1266
if path is not None:
1267
mutter(' (to %s)', path)
1268
self._request_start_time = time.time()
1269
self._write_protocol_version()
1270
self._write_headers(self._headers)
1271
self._write_structure(args)
1272
readv_bytes = self._serialise_offsets(body)
1273
if 'hpss' in debug.debug_flags:
1274
mutter(' %d bytes in readv request', len(readv_bytes))
1275
self._write_prefixed_body(readv_bytes)
1277
self._medium_request.finished_writing()
1279
def call_with_body_stream(self, args, stream):
1280
if 'hpss' in debug.debug_flags:
1281
mutter('hpss call w/body stream: %r', args)
1282
path = getattr(self._medium_request._medium, '_path', None)
1283
if path is not None:
1284
mutter(' (to %s)', path)
1285
self._request_start_time = time.time()
1286
self._write_protocol_version()
1287
self._write_headers(self._headers)
1288
self._write_structure(args)
1289
# TODO: notice if the server has sent an early error reply before we
1290
# have finished sending the stream. We would notice at the end
1291
# anyway, but if the medium can deliver it early then it's good
1292
# to short-circuit the whole request...
1293
for exc_info, part in _iter_with_errors(stream):
1294
if exc_info is not None:
1295
# Iterating the stream failed. Cleanly abort the request.
1296
self._write_error_status()
1297
# Currently the client unconditionally sends ('error',) as the
1299
self._write_structure(('error',))
1301
self._medium_request.finished_writing()
1302
raise exc_info[0], exc_info[1], exc_info[2]
1304
self._write_prefixed_body(part)
1307
self._medium_request.finished_writing()
455
self._request.accept_bytes(REQUEST_VERSION_TWO)
added
removed
bzrlib/smart/protocol.py
