diff options
Diffstat (limited to 'module/lib/thrift/transport')
| -rw-r--r-- | module/lib/thrift/transport/THttpClient.py | 126 | ||||
| -rw-r--r-- | module/lib/thrift/transport/TSocket.py | 163 | ||||
| -rw-r--r-- | module/lib/thrift/transport/TTransport.py | 331 | ||||
| -rw-r--r-- | module/lib/thrift/transport/TTwisted.py | 219 | ||||
| -rw-r--r-- | module/lib/thrift/transport/TZlibTransport.py | 261 | ||||
| -rw-r--r-- | module/lib/thrift/transport/__init__.py | 20 |
6 files changed, 0 insertions, 1120 deletions
diff --git a/module/lib/thrift/transport/THttpClient.py b/module/lib/thrift/transport/THttpClient.py deleted file mode 100644 index 50269785c..000000000 --- a/module/lib/thrift/transport/THttpClient.py +++ /dev/null @@ -1,126 +0,0 @@ -# -# 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 TTransport import * -from cStringIO import StringIO - -import urlparse -import httplib -import warnings -import socket - -class THttpClient(TTransportBase): - - """Http implementation of TTransport base.""" - - def __init__(self, uri_or_host, port=None, path=None): - """THttpClient supports two different types constructor parameters. - - THttpClient(host, port, path) - deprecated - THttpClient(uri) - - Only the second supports https.""" - - if port is not None: - warnings.warn("Please use the THttpClient('http://host:port/path') syntax", DeprecationWarning, stacklevel=2) - self.host = uri_or_host - self.port = port - assert path - self.path = path - self.scheme = 'http' - else: - parsed = urlparse.urlparse(uri_or_host) - self.scheme = parsed.scheme - assert self.scheme in ('http', 'https') - if self.scheme == 'http': - self.port = parsed.port or httplib.HTTP_PORT - elif self.scheme == 'https': - self.port = parsed.port or httplib.HTTPS_PORT - self.host = parsed.hostname - self.path = parsed.path - if parsed.query: - self.path += '?%s' % parsed.query - self.__wbuf = StringIO() - self.__http = None - self.__timeout = None - - def open(self): - if self.scheme == 'http': - self.__http = httplib.HTTP(self.host, self.port) - else: - self.__http = httplib.HTTPS(self.host, self.port) - - def close(self): - self.__http.close() - self.__http = None - - def isOpen(self): - return self.__http != None - - def setTimeout(self, ms): - if not hasattr(socket, 'getdefaulttimeout'): - raise NotImplementedError - - if ms is None: - self.__timeout = None - else: - self.__timeout = ms/1000.0 - - def read(self, sz): - return self.__http.file.read(sz) - - def write(self, buf): - self.__wbuf.write(buf) - - def __withTimeout(f): - def _f(*args, **kwargs): - orig_timeout = socket.getdefaulttimeout() - socket.setdefaulttimeout(args[0].__timeout) - result = f(*args, **kwargs) - socket.setdefaulttimeout(orig_timeout) - return result - return _f - - def flush(self): - if self.isOpen(): - self.close() - self.open(); - - # Pull data out of buffer - data = self.__wbuf.getvalue() - self.__wbuf = StringIO() - - # HTTP request - self.__http.putrequest('POST', self.path) - - # Write headers - self.__http.putheader('Host', self.host) - self.__http.putheader('Content-Type', 'application/x-thrift') - self.__http.putheader('Content-Length', str(len(data))) - self.__http.endheaders() - - # Write payload - self.__http.send(data) - - # Get reply to flush the request - self.code, self.message, self.headers = self.__http.getreply() - - # Decorate if we know how to timeout - if hasattr(socket, 'getdefaulttimeout'): - flush = __withTimeout(flush) diff --git a/module/lib/thrift/transport/TSocket.py b/module/lib/thrift/transport/TSocket.py deleted file mode 100644 index 4e0e1874f..000000000 --- a/module/lib/thrift/transport/TSocket.py +++ /dev/null @@ -1,163 +0,0 @@ -# -# 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 TTransport import * -import os -import errno -import socket -import sys - -class TSocketBase(TTransportBase): - def _resolveAddr(self): - if self._unix_socket is not None: - return [(socket.AF_UNIX, socket.SOCK_STREAM, None, None, self._unix_socket)] - else: - return socket.getaddrinfo(self.host, self.port, socket.AF_UNSPEC, socket.SOCK_STREAM, 0, socket.AI_PASSIVE | socket.AI_ADDRCONFIG) - - def close(self): - if self.handle: - self.handle.close() - self.handle = None - -class TSocket(TSocketBase): - """Socket implementation of TTransport base.""" - - def __init__(self, host='localhost', port=9090, unix_socket=None): - """Initialize a TSocket - - @param host(str) The host to connect to. - @param port(int) The (TCP) port to connect to. - @param unix_socket(str) The filename of a unix socket to connect to. - (host and port will be ignored.) - """ - - self.host = host - self.port = port - self.handle = None - self._unix_socket = unix_socket - self._timeout = None - - def setHandle(self, h): - self.handle = h - - def isOpen(self): - return self.handle is not None - - def setTimeout(self, ms): - if ms is None: - self._timeout = None - else: - self._timeout = ms/1000.0 - - if self.handle is not None: - self.handle.settimeout(self._timeout) - - def open(self): - try: - res0 = self._resolveAddr() - for res in res0: - self.handle = socket.socket(res[0], res[1]) - self.handle.settimeout(self._timeout) - try: - self.handle.connect(res[4]) - except socket.error, e: - if res is not res0[-1]: - continue - else: - raise e - break - except socket.error, e: - if self._unix_socket: - message = 'Could not connect to socket %s' % self._unix_socket - else: - message = 'Could not connect to %s:%d' % (self.host, self.port) - raise TTransportException(type=TTransportException.NOT_OPEN, message=message) - - def read(self, sz): - try: - buff = self.handle.recv(sz) - except socket.error, e: - if (e.args[0] == errno.ECONNRESET and - (sys.platform == 'darwin' or sys.platform.startswith('freebsd'))): - # freebsd and Mach don't follow POSIX semantic of recv - # and fail with ECONNRESET if peer performed shutdown. - # See corresponding comment and code in TSocket::read() - # in lib/cpp/src/transport/TSocket.cpp. - self.close() - # Trigger the check to raise the END_OF_FILE exception below. - buff = '' - else: - raise - if len(buff) == 0: - raise TTransportException(type=TTransportException.END_OF_FILE, message='TSocket read 0 bytes') - return buff - - def write(self, buff): - if not self.handle: - raise TTransportException(type=TTransportException.NOT_OPEN, message='Transport not open') - sent = 0 - have = len(buff) - while sent < have: - plus = self.handle.send(buff) - if plus == 0: - raise TTransportException(type=TTransportException.END_OF_FILE, message='TSocket sent 0 bytes') - sent += plus - buff = buff[plus:] - - def flush(self): - pass - -class TServerSocket(TSocketBase, TServerTransportBase): - """Socket implementation of TServerTransport base.""" - - def __init__(self, host=None, port=9090, unix_socket=None): - self.host = host - self.port = port - self._unix_socket = unix_socket - self.handle = None - - def listen(self): - res0 = self._resolveAddr() - for res in res0: - if res[0] is socket.AF_INET6 or res is res0[-1]: - break - - # We need remove the old unix socket if the file exists and - # nobody is listening on it. - if self._unix_socket: - tmp = socket.socket(res[0], res[1]) - try: - tmp.connect(res[4]) - except socket.error, err: - eno, message = err.args - if eno == errno.ECONNREFUSED: - os.unlink(res[4]) - - self.handle = socket.socket(res[0], res[1]) - self.handle.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) - if hasattr(self.handle, 'settimeout'): - self.handle.settimeout(None) - self.handle.bind(res[4]) - self.handle.listen(128) - - def accept(self): - client, addr = self.handle.accept() - result = TSocket() - result.setHandle(client) - return result diff --git a/module/lib/thrift/transport/TTransport.py b/module/lib/thrift/transport/TTransport.py deleted file mode 100644 index 12e51a9bf..000000000 --- a/module/lib/thrift/transport/TTransport.py +++ /dev/null @@ -1,331 +0,0 @@ -# -# 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 cStringIO import StringIO -from struct import pack,unpack -from thrift.Thrift import TException - -class TTransportException(TException): - - """Custom Transport Exception class""" - - UNKNOWN = 0 - NOT_OPEN = 1 - ALREADY_OPEN = 2 - TIMED_OUT = 3 - END_OF_FILE = 4 - - def __init__(self, type=UNKNOWN, message=None): - TException.__init__(self, message) - self.type = type - -class TTransportBase: - - """Base class for Thrift transport layer.""" - - def isOpen(self): - pass - - def open(self): - pass - - def close(self): - pass - - def read(self, sz): - pass - - def readAll(self, sz): - buff = '' - have = 0 - while (have < sz): - chunk = self.read(sz-have) - have += len(chunk) - buff += chunk - - if len(chunk) == 0: - raise EOFError() - - return buff - - def write(self, buf): - pass - - def flush(self): - pass - -# This class should be thought of as an interface. -class CReadableTransport: - """base class for transports that are readable from C""" - - # TODO(dreiss): Think about changing this interface to allow us to use - # a (Python, not c) StringIO instead, because it allows - # you to write after reading. - - # NOTE: This is a classic class, so properties will NOT work - # correctly for setting. - @property - def cstringio_buf(self): - """A cStringIO buffer that contains the current chunk we are reading.""" - pass - - def cstringio_refill(self, partialread, reqlen): - """Refills cstringio_buf. - - Returns the currently used buffer (which can but need not be the same as - the old cstringio_buf). partialread is what the C code has read from the - buffer, and should be inserted into the buffer before any more reads. The - return value must be a new, not borrowed reference. Something along the - lines of self._buf should be fine. - - If reqlen bytes can't be read, throw EOFError. - """ - pass - -class TServerTransportBase: - - """Base class for Thrift server transports.""" - - def listen(self): - pass - - def accept(self): - pass - - def close(self): - pass - -class TTransportFactoryBase: - - """Base class for a Transport Factory""" - - def getTransport(self, trans): - return trans - -class TBufferedTransportFactory: - - """Factory transport that builds buffered transports""" - - def getTransport(self, trans): - buffered = TBufferedTransport(trans) - return buffered - - -class TBufferedTransport(TTransportBase,CReadableTransport): - - """Class that wraps another transport and buffers its I/O. - - The implementation uses a (configurable) fixed-size read buffer - but buffers all writes until a flush is performed. - """ - - DEFAULT_BUFFER = 4096 - - def __init__(self, trans, rbuf_size = DEFAULT_BUFFER): - self.__trans = trans - self.__wbuf = StringIO() - self.__rbuf = StringIO("") - self.__rbuf_size = rbuf_size - - def isOpen(self): - return self.__trans.isOpen() - - def open(self): - return self.__trans.open() - - def close(self): - return self.__trans.close() - - def read(self, sz): - ret = self.__rbuf.read(sz) - if len(ret) != 0: - return ret - - self.__rbuf = StringIO(self.__trans.read(max(sz, self.__rbuf_size))) - return self.__rbuf.read(sz) - - def write(self, buf): - self.__wbuf.write(buf) - - def flush(self): - out = self.__wbuf.getvalue() - # reset wbuf before write/flush to preserve state on underlying failure - self.__wbuf = StringIO() - self.__trans.write(out) - self.__trans.flush() - - # Implement the CReadableTransport interface. - @property - def cstringio_buf(self): - return self.__rbuf - - def cstringio_refill(self, partialread, reqlen): - retstring = partialread - if reqlen < self.__rbuf_size: - # try to make a read of as much as we can. - retstring += self.__trans.read(self.__rbuf_size) - - # but make sure we do read reqlen bytes. - if len(retstring) < reqlen: - retstring += self.__trans.readAll(reqlen - len(retstring)) - - self.__rbuf = StringIO(retstring) - return self.__rbuf - -class TMemoryBuffer(TTransportBase, CReadableTransport): - """Wraps a cStringIO object as a TTransport. - - NOTE: Unlike the C++ version of this class, you cannot write to it - then immediately read from it. If you want to read from a - TMemoryBuffer, you must either pass a string to the constructor. - TODO(dreiss): Make this work like the C++ version. - """ - - def __init__(self, value=None): - """value -- a value to read from for stringio - - If value is set, this will be a transport for reading, - otherwise, it is for writing""" - if value is not None: - self._buffer = StringIO(value) - else: - self._buffer = StringIO() - - def isOpen(self): - return not self._buffer.closed - - def open(self): - pass - - def close(self): - self._buffer.close() - - def read(self, sz): - return self._buffer.read(sz) - - def write(self, buf): - self._buffer.write(buf) - - def flush(self): - pass - - def getvalue(self): - return self._buffer.getvalue() - - # Implement the CReadableTransport interface. - @property - def cstringio_buf(self): - return self._buffer - - def cstringio_refill(self, partialread, reqlen): - # only one shot at reading... - raise EOFError() - -class TFramedTransportFactory: - - """Factory transport that builds framed transports""" - - def getTransport(self, trans): - framed = TFramedTransport(trans) - return framed - - -class TFramedTransport(TTransportBase, CReadableTransport): - - """Class that wraps another transport and frames its I/O when writing.""" - - def __init__(self, trans,): - self.__trans = trans - self.__rbuf = StringIO() - self.__wbuf = StringIO() - - def isOpen(self): - return self.__trans.isOpen() - - def open(self): - return self.__trans.open() - - def close(self): - return self.__trans.close() - - def read(self, sz): - ret = self.__rbuf.read(sz) - if len(ret) != 0: - return ret - - self.readFrame() - return self.__rbuf.read(sz) - - def readFrame(self): - buff = self.__trans.readAll(4) - sz, = unpack('!i', buff) - self.__rbuf = StringIO(self.__trans.readAll(sz)) - - def write(self, buf): - self.__wbuf.write(buf) - - def flush(self): - wout = self.__wbuf.getvalue() - wsz = len(wout) - # reset wbuf before write/flush to preserve state on underlying failure - self.__wbuf = StringIO() - # N.B.: Doing this string concatenation is WAY cheaper than making - # two separate calls to the underlying socket object. Socket writes in - # Python turn out to be REALLY expensive, but it seems to do a pretty - # good job of managing string buffer operations without excessive copies - buf = pack("!i", wsz) + wout - self.__trans.write(buf) - self.__trans.flush() - - # Implement the CReadableTransport interface. - @property - def cstringio_buf(self): - return self.__rbuf - - def cstringio_refill(self, prefix, reqlen): - # self.__rbuf will already be empty here because fastbinary doesn't - # ask for a refill until the previous buffer is empty. Therefore, - # we can start reading new frames immediately. - while len(prefix) < reqlen: - self.readFrame() - prefix += self.__rbuf.getvalue() - self.__rbuf = StringIO(prefix) - return self.__rbuf - - -class TFileObjectTransport(TTransportBase): - """Wraps a file-like object to make it work as a Thrift transport.""" - - def __init__(self, fileobj): - self.fileobj = fileobj - - def isOpen(self): - return True - - def close(self): - self.fileobj.close() - - def read(self, sz): - return self.fileobj.read(sz) - - def write(self, buf): - self.fileobj.write(buf) - - def flush(self): - self.fileobj.flush() diff --git a/module/lib/thrift/transport/TTwisted.py b/module/lib/thrift/transport/TTwisted.py deleted file mode 100644 index b6dcb4e0b..000000000 --- a/module/lib/thrift/transport/TTwisted.py +++ /dev/null @@ -1,219 +0,0 @@ -# -# 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 zope.interface import implements, Interface, Attribute -from twisted.internet.protocol import Protocol, ServerFactory, ClientFactory, \ - connectionDone -from twisted.internet import defer -from twisted.protocols import basic -from twisted.python import log -from twisted.web import server, resource, http - -from thrift.transport import TTransport -from cStringIO import StringIO - - -class TMessageSenderTransport(TTransport.TTransportBase): - - def __init__(self): - self.__wbuf = StringIO() - - def write(self, buf): - self.__wbuf.write(buf) - - def flush(self): - msg = self.__wbuf.getvalue() - self.__wbuf = StringIO() - self.sendMessage(msg) - - def sendMessage(self, message): - raise NotImplementedError - - -class TCallbackTransport(TMessageSenderTransport): - - def __init__(self, func): - TMessageSenderTransport.__init__(self) - self.func = func - - def sendMessage(self, message): - self.func(message) - - -class ThriftClientProtocol(basic.Int32StringReceiver): - - MAX_LENGTH = 2 ** 31 - 1 - - def __init__(self, client_class, iprot_factory, oprot_factory=None): - self._client_class = client_class - self._iprot_factory = iprot_factory - if oprot_factory is None: - self._oprot_factory = iprot_factory - else: - self._oprot_factory = oprot_factory - - self.recv_map = {} - self.started = defer.Deferred() - - def dispatch(self, msg): - self.sendString(msg) - - def connectionMade(self): - tmo = TCallbackTransport(self.dispatch) - self.client = self._client_class(tmo, self._oprot_factory) - self.started.callback(self.client) - - def connectionLost(self, reason=connectionDone): - for k,v in self.client._reqs.iteritems(): - tex = TTransport.TTransportException( - type=TTransport.TTransportException.END_OF_FILE, - message='Connection closed') - v.errback(tex) - - def stringReceived(self, frame): - tr = TTransport.TMemoryBuffer(frame) - iprot = self._iprot_factory.getProtocol(tr) - (fname, mtype, rseqid) = iprot.readMessageBegin() - - try: - method = self.recv_map[fname] - except KeyError: - method = getattr(self.client, 'recv_' + fname) - self.recv_map[fname] = method - - method(iprot, mtype, rseqid) - - -class ThriftServerProtocol(basic.Int32StringReceiver): - - MAX_LENGTH = 2 ** 31 - 1 - - def dispatch(self, msg): - self.sendString(msg) - - def processError(self, error): - self.transport.loseConnection() - - def processOk(self, _, tmo): - msg = tmo.getvalue() - - if len(msg) > 0: - self.dispatch(msg) - - def stringReceived(self, frame): - tmi = TTransport.TMemoryBuffer(frame) - tmo = TTransport.TMemoryBuffer() - - iprot = self.factory.iprot_factory.getProtocol(tmi) - oprot = self.factory.oprot_factory.getProtocol(tmo) - - d = self.factory.processor.process(iprot, oprot) - d.addCallbacks(self.processOk, self.processError, - callbackArgs=(tmo,)) - - -class IThriftServerFactory(Interface): - - processor = Attribute("Thrift processor") - - iprot_factory = Attribute("Input protocol factory") - - oprot_factory = Attribute("Output protocol factory") - - -class IThriftClientFactory(Interface): - - client_class = Attribute("Thrift client class") - - iprot_factory = Attribute("Input protocol factory") - - oprot_factory = Attribute("Output protocol factory") - - -class ThriftServerFactory(ServerFactory): - - implements(IThriftServerFactory) - - protocol = ThriftServerProtocol - - def __init__(self, processor, iprot_factory, oprot_factory=None): - self.processor = processor - self.iprot_factory = iprot_factory - if oprot_factory is None: - self.oprot_factory = iprot_factory - else: - self.oprot_factory = oprot_factory - - -class ThriftClientFactory(ClientFactory): - - implements(IThriftClientFactory) - - protocol = ThriftClientProtocol - - def __init__(self, client_class, iprot_factory, oprot_factory=None): - self.client_class = client_class - self.iprot_factory = iprot_factory - if oprot_factory is None: - self.oprot_factory = iprot_factory - else: - self.oprot_factory = oprot_factory - - def buildProtocol(self, addr): - p = self.protocol(self.client_class, self.iprot_factory, - self.oprot_factory) - p.factory = self - return p - - -class ThriftResource(resource.Resource): - - allowedMethods = ('POST',) - - def __init__(self, processor, inputProtocolFactory, - outputProtocolFactory=None): - resource.Resource.__init__(self) - self.inputProtocolFactory = inputProtocolFactory - if outputProtocolFactory is None: - self.outputProtocolFactory = inputProtocolFactory - else: - self.outputProtocolFactory = outputProtocolFactory - self.processor = processor - - def getChild(self, path, request): - return self - - def _cbProcess(self, _, request, tmo): - msg = tmo.getvalue() - request.setResponseCode(http.OK) - request.setHeader("content-type", "application/x-thrift") - request.write(msg) - request.finish() - - def render_POST(self, request): - request.content.seek(0, 0) - data = request.content.read() - tmi = TTransport.TMemoryBuffer(data) - tmo = TTransport.TMemoryBuffer() - - iprot = self.inputProtocolFactory.getProtocol(tmi) - oprot = self.outputProtocolFactory.getProtocol(tmo) - - d = self.processor.process(iprot, oprot) - d.addCallback(self._cbProcess, request, tmo) - return server.NOT_DONE_YET diff --git a/module/lib/thrift/transport/TZlibTransport.py b/module/lib/thrift/transport/TZlibTransport.py deleted file mode 100644 index 784d4e1e0..000000000 --- a/module/lib/thrift/transport/TZlibTransport.py +++ /dev/null @@ -1,261 +0,0 @@ -# -# 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. -# -''' -TZlibTransport provides a compressed transport and transport factory -class, using the python standard library zlib module to implement -data compression. -''' - -from __future__ import division -import zlib -from cStringIO import StringIO -from TTransport import TTransportBase, CReadableTransport - -class TZlibTransportFactory(object): - ''' - Factory transport that builds zlib compressed transports. - - This factory caches the last single client/transport that it was passed - and returns the same TZlibTransport object that was created. - - This caching means the TServer class will get the _same_ transport - object for both input and output transports from this factory. - (For non-threaded scenarios only, since the cache only holds one object) - - The purpose of this caching is to allocate only one TZlibTransport where - only one is really needed (since it must have separate read/write buffers), - and makes the statistics from getCompSavings() and getCompRatio() - easier to understand. - ''' - - # class scoped cache of last transport given and zlibtransport returned - _last_trans = None - _last_z = None - - def getTransport(self, trans, compresslevel=9): - '''Wrap a transport , trans, with the TZlibTransport - compressed transport class, returning a new - transport to the caller. - - @param compresslevel: The zlib compression level, ranging - from 0 (no compression) to 9 (best compression). Defaults to 9. - @type compresslevel: int - - This method returns a TZlibTransport which wraps the - passed C{trans} TTransport derived instance. - ''' - if trans == self._last_trans: - return self._last_z - ztrans = TZlibTransport(trans, compresslevel) - self._last_trans = trans - self._last_z = ztrans - return ztrans - - -class TZlibTransport(TTransportBase, CReadableTransport): - ''' - Class that wraps a transport with zlib, compressing writes - and decompresses reads, using the python standard - library zlib module. - ''' - - # Read buffer size for the python fastbinary C extension, - # the TBinaryProtocolAccelerated class. - DEFAULT_BUFFSIZE = 4096 - - def __init__(self, trans, compresslevel=9): - ''' - Create a new TZlibTransport, wrapping C{trans}, another - TTransport derived object. - - @param trans: A thrift transport object, i.e. a TSocket() object. - @type trans: TTransport - @param compresslevel: The zlib compression level, ranging - from 0 (no compression) to 9 (best compression). Default is 9. - @type compresslevel: int - ''' - self.__trans = trans - self.compresslevel = compresslevel - self.__rbuf = StringIO() - self.__wbuf = StringIO() - self._init_zlib() - self._init_stats() - - def _reinit_buffers(self): - ''' - Internal method to initialize/reset the internal StringIO objects - for read and write buffers. - ''' - self.__rbuf = StringIO() - self.__wbuf = StringIO() - - def _init_stats(self): - ''' - Internal method to reset the internal statistics counters - for compression ratios and bandwidth savings. - ''' - self.bytes_in = 0 - self.bytes_out = 0 - self.bytes_in_comp = 0 - self.bytes_out_comp = 0 - - def _init_zlib(self): - ''' - Internal method for setting up the zlib compression and - decompression objects. - ''' - self._zcomp_read = zlib.decompressobj() - self._zcomp_write = zlib.compressobj(self.compresslevel) - - def getCompRatio(self): - ''' - Get the current measured compression ratios (in,out) from - this transport. - - Returns a tuple of: - (inbound_compression_ratio, outbound_compression_ratio) - - The compression ratios are computed as: - compressed / uncompressed - - E.g., data that compresses by 10x will have a ratio of: 0.10 - and data that compresses to half of ts original size will - have a ratio of 0.5 - - None is returned if no bytes have yet been processed in - a particular direction. - ''' - r_percent, w_percent = (None, None) - if self.bytes_in > 0: - r_percent = self.bytes_in_comp / self.bytes_in - if self.bytes_out > 0: - w_percent = self.bytes_out_comp / self.bytes_out - return (r_percent, w_percent) - - def getCompSavings(self): - ''' - Get the current count of saved bytes due to data - compression. - - Returns a tuple of: - (inbound_saved_bytes, outbound_saved_bytes) - - Note: if compression is actually expanding your - data (only likely with very tiny thrift objects), then - the values returned will be negative. - ''' - r_saved = self.bytes_in - self.bytes_in_comp - w_saved = self.bytes_out - self.bytes_out_comp - return (r_saved, w_saved) - - def isOpen(self): - '''Return the underlying transport's open status''' - return self.__trans.isOpen() - - def open(self): - """Open the underlying transport""" - self._init_stats() - return self.__trans.open() - - def listen(self): - '''Invoke the underlying transport's listen() method''' - self.__trans.listen() - - def accept(self): - '''Accept connections on the underlying transport''' - return self.__trans.accept() - - def close(self): - '''Close the underlying transport,''' - self._reinit_buffers() - self._init_zlib() - return self.__trans.close() - - def read(self, sz): - ''' - Read up to sz bytes from the decompressed bytes buffer, and - read from the underlying transport if the decompression - buffer is empty. - ''' - ret = self.__rbuf.read(sz) - if len(ret) > 0: - return ret - # keep reading from transport until something comes back - while True: - if self.readComp(sz): - break - ret = self.__rbuf.read(sz) - return ret - - def readComp(self, sz): - ''' - Read compressed data from the underlying transport, then - decompress it and append it to the internal StringIO read buffer - ''' - zbuf = self.__trans.read(sz) - zbuf = self._zcomp_read.unconsumed_tail + zbuf - buf = self._zcomp_read.decompress(zbuf) - self.bytes_in += len(zbuf) - self.bytes_in_comp += len(buf) - old = self.__rbuf.read() - self.__rbuf = StringIO(old + buf) - if len(old) + len(buf) == 0: - return False - return True - - def write(self, buf): - ''' - Write some bytes, putting them into the internal write - buffer for eventual compression. - ''' - self.__wbuf.write(buf) - - def flush(self): - ''' - Flush any queued up data in the write buffer and ensure the - compression buffer is flushed out to the underlying transport - ''' - wout = self.__wbuf.getvalue() - if len(wout) > 0: - zbuf = self._zcomp_write.compress(wout) - self.bytes_out += len(wout) - self.bytes_out_comp += len(zbuf) - else: - zbuf = '' - ztail = self._zcomp_write.flush(zlib.Z_SYNC_FLUSH) - self.bytes_out_comp += len(ztail) - if (len(zbuf) + len(ztail)) > 0: - self.__wbuf = StringIO() - self.__trans.write(zbuf + ztail) - self.__trans.flush() - - @property - def cstringio_buf(self): - '''Implement the CReadableTransport interface''' - return self.__rbuf - - def cstringio_refill(self, partialread, reqlen): - '''Implement the CReadableTransport interface for refill''' - retstring = partialread - if reqlen < self.DEFAULT_BUFFSIZE: - retstring += self.read(self.DEFAULT_BUFFSIZE) - while len(retstring) < reqlen: - retstring += self.read(reqlen - len(retstring)) - self.__rbuf = StringIO(retstring) - return self.__rbuf diff --git a/module/lib/thrift/transport/__init__.py b/module/lib/thrift/transport/__init__.py deleted file mode 100644 index 46e54fe6b..000000000 --- a/module/lib/thrift/transport/__init__.py +++ /dev/null @@ -1,20 +0,0 @@ -# -# 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. -# - -__all__ = ['TTransport', 'TSocket', 'THttpClient','TZlibTransport'] |