--- /dev/null
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+from .TProtocol import TType, TProtocolBase, TProtocolException, TProtocolFactory
+from struct import pack, unpack
+
+
+class TBinaryProtocol(TProtocolBase):
+ """Binary implementation of the Thrift protocol driver."""
+
+ # NastyHaxx. Python 2.4+ on 32-bit machines forces hex constants to be
+ # positive, converting this into a long. If we hardcode the int value
+ # instead it'll stay in 32 bit-land.
+
+ # VERSION_MASK = 0xffff0000
+ VERSION_MASK = -65536
+
+ # VERSION_1 = 0x80010000
+ VERSION_1 = -2147418112
+
+ TYPE_MASK = 0x000000ff
+
+ def __init__(self, trans, strictRead=False, strictWrite=True, **kwargs):
+ TProtocolBase.__init__(self, trans)
+ self.strictRead = strictRead
+ self.strictWrite = strictWrite
+ self.string_length_limit = kwargs.get('string_length_limit', None)
+ self.container_length_limit = kwargs.get('container_length_limit', None)
+
+ def _check_string_length(self, length):
+ self._check_length(self.string_length_limit, length)
+
+ def _check_container_length(self, length):
+ self._check_length(self.container_length_limit, length)
+
+ def writeMessageBegin(self, name, type, seqid):
+ if self.strictWrite:
+ self.writeI32(TBinaryProtocol.VERSION_1 | type)
+ self.writeString(name)
+ self.writeI32(seqid)
+ else:
+ self.writeString(name)
+ self.writeByte(type)
+ self.writeI32(seqid)
+
+ def writeMessageEnd(self):
+ pass
+
+ def writeStructBegin(self, name):
+ pass
+
+ def writeStructEnd(self):
+ pass
+
+ def writeFieldBegin(self, name, type, id):
+ self.writeByte(type)
+ self.writeI16(id)
+
+ def writeFieldEnd(self):
+ pass
+
+ def writeFieldStop(self):
+ self.writeByte(TType.STOP)
+
+ def writeMapBegin(self, ktype, vtype, size):
+ self.writeByte(ktype)
+ self.writeByte(vtype)
+ self.writeI32(size)
+
+ def writeMapEnd(self):
+ pass
+
+ def writeListBegin(self, etype, size):
+ self.writeByte(etype)
+ self.writeI32(size)
+
+ def writeListEnd(self):
+ pass
+
+ def writeSetBegin(self, etype, size):
+ self.writeByte(etype)
+ self.writeI32(size)
+
+ def writeSetEnd(self):
+ pass
+
+ def writeBool(self, bool):
+ if bool:
+ self.writeByte(1)
+ else:
+ self.writeByte(0)
+
+ def writeByte(self, byte):
+ buff = pack("!b", byte)
+ self.trans.write(buff)
+
+ def writeI16(self, i16):
+ buff = pack("!h", i16)
+ self.trans.write(buff)
+
+ def writeI32(self, i32):
+ buff = pack("!i", i32)
+ self.trans.write(buff)
+
+ def writeI64(self, i64):
+ buff = pack("!q", i64)
+ self.trans.write(buff)
+
+ def writeDouble(self, dub):
+ buff = pack("!d", dub)
+ self.trans.write(buff)
+
+ def writeBinary(self, str):
+ self.writeI32(len(str))
+ self.trans.write(str)
+
+ def readMessageBegin(self):
+ sz = self.readI32()
+ if sz < 0:
+ version = sz & TBinaryProtocol.VERSION_MASK
+ if version != TBinaryProtocol.VERSION_1:
+ raise TProtocolException(
+ type=TProtocolException.BAD_VERSION,
+ message='Bad version in readMessageBegin: %d' % (sz))
+ type = sz & TBinaryProtocol.TYPE_MASK
+ name = self.readString()
+ seqid = self.readI32()
+ else:
+ if self.strictRead:
+ raise TProtocolException(type=TProtocolException.BAD_VERSION,
+ message='No protocol version header')
+ name = self.trans.readAll(sz)
+ type = self.readByte()
+ seqid = self.readI32()
+ return (name, type, seqid)
+
+ def readMessageEnd(self):
+ pass
+
+ def readStructBegin(self):
+ pass
+
+ def readStructEnd(self):
+ pass
+
+ def readFieldBegin(self):
+ type = self.readByte()
+ if type == TType.STOP:
+ return (None, type, 0)
+ id = self.readI16()
+ return (None, type, id)
+
+ def readFieldEnd(self):
+ pass
+
+ def readMapBegin(self):
+ ktype = self.readByte()
+ vtype = self.readByte()
+ size = self.readI32()
+ self._check_container_length(size)
+ return (ktype, vtype, size)
+
+ def readMapEnd(self):
+ pass
+
+ def readListBegin(self):
+ etype = self.readByte()
+ size = self.readI32()
+ self._check_container_length(size)
+ return (etype, size)
+
+ def readListEnd(self):
+ pass
+
+ def readSetBegin(self):
+ etype = self.readByte()
+ size = self.readI32()
+ self._check_container_length(size)
+ return (etype, size)
+
+ def readSetEnd(self):
+ pass
+
+ def readBool(self):
+ byte = self.readByte()
+ if byte == 0:
+ return False
+ return True
+
+ def readByte(self):
+ buff = self.trans.readAll(1)
+ val, = unpack('!b', buff)
+ return val
+
+ def readI16(self):
+ buff = self.trans.readAll(2)
+ val, = unpack('!h', buff)
+ return val
+
+ def readI32(self):
+ buff = self.trans.readAll(4)
+ val, = unpack('!i', buff)
+ return val
+
+ def readI64(self):
+ buff = self.trans.readAll(8)
+ val, = unpack('!q', buff)
+ return val
+
+ def readDouble(self):
+ buff = self.trans.readAll(8)
+ val, = unpack('!d', buff)
+ return val
+
+ def readBinary(self):
+ size = self.readI32()
+ self._check_string_length(size)
+ s = self.trans.readAll(size)
+ return s
+
+
+class TBinaryProtocolFactory(TProtocolFactory):
+ def __init__(self, strictRead=False, strictWrite=True, **kwargs):
+ self.strictRead = strictRead
+ self.strictWrite = strictWrite
+ self.string_length_limit = kwargs.get('string_length_limit', None)
+ self.container_length_limit = kwargs.get('container_length_limit', None)
+
+ def getProtocol(self, trans):
+ prot = TBinaryProtocol(trans, self.strictRead, self.strictWrite,
+ string_length_limit=self.string_length_limit,
+ container_length_limit=self.container_length_limit)
+ return prot
+
+
+class TBinaryProtocolAccelerated(TBinaryProtocol):
+ """C-Accelerated version of TBinaryProtocol.
+
+ This class does not override any of TBinaryProtocol's methods,
+ but the generated code recognizes it directly and will call into
+ our C module to do the encoding, bypassing this object entirely.
+ We inherit from TBinaryProtocol so that the normal TBinaryProtocol
+ encoding can happen if the fastbinary module doesn't work for some
+ reason. (TODO(dreiss): Make this happen sanely in more cases.)
+ To disable this behavior, pass fallback=False constructor argument.
+
+ In order to take advantage of the C module, just use
+ TBinaryProtocolAccelerated instead of TBinaryProtocol.
+
+ NOTE: This code was contributed by an external developer.
+ The internal Thrift team has reviewed and tested it,
+ but we cannot guarantee that it is production-ready.
+ Please feel free to report bugs and/or success stories
+ to the public mailing list.
+ """
+ pass
+
+ def __init__(self, *args, **kwargs):
+ fallback = kwargs.pop('fallback', True)
+ super(TBinaryProtocolAccelerated, self).__init__(*args, **kwargs)
+ try:
+ from thrift.protocol import fastbinary
+ except ImportError:
+ if not fallback:
+ raise
+ else:
+ self._fast_decode = fastbinary.decode_binary
+ self._fast_encode = fastbinary.encode_binary
+
+
+class TBinaryProtocolAcceleratedFactory(TProtocolFactory):
+ def __init__(self,
+ string_length_limit=None,
+ container_length_limit=None,
+ fallback=True):
+ self.string_length_limit = string_length_limit
+ self.container_length_limit = container_length_limit
+ self._fallback = fallback
+
+ def getProtocol(self, trans):
+ return TBinaryProtocolAccelerated(
+ trans,
+ string_length_limit=self.string_length_limit,
+ container_length_limit=self.container_length_limit,
+ fallback=self._fallback)
projects / ceph.git / blobdiff