Brandon Rhodes avatar Brandon Rhodes committed cb6878f

Brought the "zmq" Python source code onboard, and added a README.

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+This package provides a statically-linked version
+of the ``zmq`` Python library,
+which is the official interface between Python
+and the startling shiny new ZeroMQ messaging library.
+The official distribution for the ``zmq`` library
+is called ``pyzmq`` here on PyPI,
+and is maintained by Brian E. Granger:
+
+http://pypi.python.org/pypi/pyzmq/
+
+This ``pyzmq-static`` distribution was created by Brandon Craig Rhodes
+after he became frustrated with having to install both ``libuuid-dev``
+and ZeroMQ itself on every machine where he then wanted to install ``pyzmq``.
+Whether you use Linux or Windows,
+this package should download and compile with a quick ``pip`` ``install``
+assuming that you have the normal tools in place
+for building Python extension modules at all.
+
+Warning
+-------
+
+This Python package is statically linked against ZeroMQ,
+which means that it carries its own copy of ZeroMQ around inside of it.
+
+If your Python program imports any other libraries or modules
+that themselves link against ZeroMQ,
+then they will find themselves talking to a different
+copy of the message queue libraries than your program does.
+The two copies of ZeroMQ might have different versions;
+they might lack shared copies of data structures
+that would be necessary to coordinate in-process queues;
+or they might break altogether,
+depending on how they and your operating system's dynamic linker
+decide to behave.
+
+But, this static version has always worked for me so far.
+
+Copying
+-------
+
+This package uses a "setup.py" file,
+which Brandon Craig Rhodes happily offers under a BSD license,
+to build a shared library built from three different source distributions.
+To use the result, you must adhere to the licensing terms of all three
+pieces of software, which are as follows:
+
+* The UUID routines from "util-linux-ng": BSD
+* The "zeromq" source: LGPL
+* The "pyzmq" source: LGPL
+
+So, okay, those are not very restrictive licensing terms.
+But still.
+See the source files themselves for more information.
 (cd zeromq-2.0.9; ./configure)
 
 # Copy the files we need into our version-controlled directories.
-rm -rf include src src_nt
-mkdir include src src_nt
+rm -rf include licenses src src_nt zmq
+mkdir include licenses src src_nt zmq
+
+cp zeromq-2.0.9/COPYING* \
+   licenses
 
 cp util-linux-ng-2.18/shlibs/uuid/src/*.c \
    zeromq-2.0.9/src/*.cpp \
    zeromq-2.0.9/src/*.h* \
    pyzmq-2.0.7/zmq/*.h \
    include
+
+cp -r pyzmq-2.0.7/zmq/*.py pyzmq-2.0.7/zmq/eventloop pyzmq-2.0.7/zmq/tests zmq
+
+# Remove the source trees.
+rm -rf pyzmq-2.0.7 util-linux-ng-2.18 zeromq-2.0.9
+                      GNU GENERAL PUBLIC LICENSE
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+
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+
+  13. Use with the GNU Affero General Public License.
+
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+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
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+Program specifies that a certain numbered version of the GNU General
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+  If the Program specifies that a proxy can decide which future
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+
+                     END OF TERMS AND CONDITIONS
+
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+
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+
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licenses/COPYING.LESSER

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+version of the library.
+
+--------------------------------------------------------------------------------
+
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+
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+
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+ obtaining a copy of this software and associated documentation
+ files (the "Software"), to deal in the Software without
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+ copies of the Software, and to permit persons to whom the
+ Software is furnished to do so, subject to the following
+ conditions:
+
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+ included in all copies or substantial portions of the Software.
+
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+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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+ FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ OTHER DEALINGS IN THE SOFTWARE.
+
-import os
 import sys
 from distutils.core import setup, Extension
 from glob import glob
 
 setup(name='pyzmq-static',
       version='2.0.7a',
-      description='Official interface statically linked against 0MQ',
+      description='Statically linked Python bindings for 0MQ',
+      long_description=open('README.rst').read(),
       author='Brandon Craig Rhodes',
       author_email='brandon@rhodesmill.org',
       url='http://bitbucket.org/brandon/pyzmq-static',
-      packages=['zmq'],
-      package_dir={'zmq': os.path.join('pyzmq-2.0.7', 'zmq')},
+      packages = ['zmq', 'zmq.tests', 'zmq.eventloop'],
       ext_modules=[ ext ],
+      classifiers = [
+        'Development Status :: 5 - Production/Stable',
+        'Intended Audience :: Developers',
+        'Intended Audience :: Financial and Insurance Industry',
+        'Intended Audience :: Science/Research',
+        'Intended Audience :: System Administrators',
+        #'Operating System :: MacOS :: MacOS X',  # must test!
+        'Operating System :: Microsoft :: Windows',
+        'Operating System :: POSIX',
+        'Topic :: System :: Networking'
+        ]
       )
+"""Python bindings for 0MQ."""
+
+#
+#    Copyright (c) 2010 Brian E. Granger
+#
+#    This file is part of pyzmq.
+#
+#    pyzmq is free software; you can redistribute it and/or modify it under
+#    the terms of the Lesser GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    pyzmq is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    Lesser GNU General Public License for more details.
+#
+#    You should have received a copy of the Lesser GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+from zmq import _zmq
+from zmq._zmq import *
+
+__all__ = _zmq.__all__
+
+__version__ = '2.0.7'
Add a comment to this file

zmq/eventloop/.___init__.py

Binary file added.

zmq/eventloop/__init__.py

+"""A Tornado based event loop for PyZMQ."""
+
+from ioloop import IOLoop
+
+__all__ = ['IOLoop']

zmq/eventloop/ioloop.py

+#
+# Copyright 2009 Facebook
+#
+# Licensed 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.
+
+"""A level-triggered I/O loop for non-blocking sockets."""
+
+import bisect
+import errno
+import os
+import logging
+import time
+import traceback
+
+try:
+    import signal
+except ImportError:
+    signal = None
+
+try:
+    import fcntl
+except ImportError:
+    if os.name == 'nt':
+        import win32_support
+        import win32_support as fcntl
+    else:
+        raise
+
+from zmq import (
+    Poller,
+    POLLIN, POLLOUT, POLLERR,
+    ZMQError
+)
+
+class IOLoop(object):
+    """A level-triggered I/O loop.
+
+    We use epoll if it is available, or else we fall back on select(). If
+    you are implementing a system that needs to handle 1000s of simultaneous
+    connections, you should use Linux and either compile our epoll module or
+    use Python 2.6+ to get epoll support.
+
+    Example usage for a simple TCP server:
+
+        import errno
+        import functools
+        import ioloop
+        import socket
+
+        def connection_ready(sock, fd, events):
+            while True:
+                try:
+                    connection, address = sock.accept()
+                except socket.error, e:
+                    if e[0] not in (errno.EWOULDBLOCK, errno.EAGAIN):
+                        raise
+                    return
+                connection.setblocking(0)
+                handle_connection(connection, address)
+
+        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
+        sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        sock.setblocking(0)
+        sock.bind(("", port))
+        sock.listen(128)
+
+        io_loop = ioloop.IOLoop.instance()
+        callback = functools.partial(connection_ready, sock)
+        io_loop.add_handler(sock.fileno(), callback, io_loop.READ)
+        io_loop.start()
+
+    """
+    # Use the zmq events masks
+    NONE = 0
+    READ = POLLIN
+    WRITE = POLLOUT
+    ERROR = POLLERR
+
+    def __init__(self, impl=None):
+        self._impl = impl or Poller()
+        if hasattr(self._impl, 'fileno'):
+            self._set_close_exec(self._impl.fileno())
+        self._handlers = {}
+        self._events = {}
+        self._callbacks = set()
+        self._timeouts = []
+        self._running = False
+        self._stopped = False
+        self._blocking_log_threshold = None
+
+        # Create a pipe that we send bogus data to when we want to wake
+        # the I/O loop when it is idle
+        if os.name != 'nt':
+            r, w = os.pipe()
+            self._set_nonblocking(r)
+            self._set_nonblocking(w)
+            self._set_close_exec(r)
+            self._set_close_exec(w)
+            self._waker_reader = os.fdopen(r, "r", 0)
+            self._waker_writer = os.fdopen(w, "w", 0)
+        else:
+            self._waker_reader = self._waker_writer = win32_support.Pipe()
+            r = self._waker_writer.reader_fd
+        self.add_handler(r, self._read_waker, self.READ)
+
+    @classmethod
+    def instance(cls):
+        """Returns a global IOLoop instance.
+
+        Most single-threaded applications have a single, global IOLoop.
+        Use this method instead of passing around IOLoop instances
+        throughout your code.
+
+        A common pattern for classes that depend on IOLoops is to use
+        a default argument to enable programs with multiple IOLoops
+        but not require the argument for simpler applications:
+
+            class MyClass(object):
+                def __init__(self, io_loop=None):
+                    self.io_loop = io_loop or IOLoop.instance()
+        """
+        if not hasattr(cls, "_instance"):
+            cls._instance = cls()
+        return cls._instance
+
+    @classmethod
+    def initialized(cls):
+        return hasattr(cls, "_instance")
+
+    def add_handler(self, fd, handler, events):
+        """Registers the given handler to receive the given events for fd."""
+        self._handlers[fd] = handler
+        self._impl.register(fd, events | self.ERROR)
+
+    def update_handler(self, fd, events):
+        """Changes the events we listen for fd."""
+        self._impl.modify(fd, events | self.ERROR)
+
+    def remove_handler(self, fd):
+        """Stop listening for events on fd."""
+        self._handlers.pop(fd, None)
+        self._events.pop(fd, None)
+        try:
+            self._impl.unregister(fd)
+        except (OSError, IOError):
+            logging.debug("Error deleting fd from IOLoop", exc_info=True)
+
+    def set_blocking_log_threshold(self, s):
+        """Logs a stack trace if the ioloop is blocked for more than s seconds.
+        Pass None to disable.  Requires python 2.6 on a unixy platform.
+        """
+        if not hasattr(signal, "setitimer"):
+            logging.error("set_blocking_log_threshold requires a signal module "
+                       "with the setitimer method")
+            return
+        self._blocking_log_threshold = s
+        if s is not None:
+            signal.signal(signal.SIGALRM, self._handle_alarm)
+
+    def _handle_alarm(self, signal, frame):
+        logging.warning('IOLoop blocked for %f seconds in\n%s',
+                     self._blocking_log_threshold,
+                     ''.join(traceback.format_stack(frame)))
+
+    def start(self):
+        """Starts the I/O loop.
+
+        The loop will run until one of the I/O handlers calls stop(), which
+        will make the loop stop after the current event iteration completes.
+        """
+        if self._stopped:
+            self._stopped = False
+            return
+        self._running = True
+        while True:
+            # Never use an infinite timeout here - it can stall epoll
+            # In pyzmq, we need to multiply the timeout by 1000 because
+            # the poll interface in pyzmq that is used here takes the timeout
+            # in ms. The value of 0.2 that exists in tornado is in seconds.
+            poll_timeout = 0.2*1000
+
+            # Prevent IO event starvation by delaying new callbacks
+            # to the next iteration of the event loop.
+            callbacks = list(self._callbacks)
+            for callback in callbacks:
+                # A callback can add or remove other callbacks
+                if callback in self._callbacks:
+                    self._callbacks.remove(callback)
+                    self._run_callback(callback)
+
+            if self._callbacks:
+                poll_timeout = 0.0
+
+            if self._timeouts:
+                now = time.time()
+                while self._timeouts and self._timeouts[0].deadline <= now:
+                    timeout = self._timeouts.pop(0)
+                    self._run_callback(timeout.callback)
+                if self._timeouts:
+                    milliseconds = self._timeouts[0].deadline - now
+                    poll_timeout = min(1000*milliseconds, poll_timeout)
+
+            if not self._running:
+                break
+
+            if self._blocking_log_threshold is not None:
+                # clear alarm so it doesn't fire while poll is waiting for
+                # events.
+                signal.setitimer(signal.ITIMER_REAL, 0, 0)
+
+            try:
+                event_pairs = self._impl.poll(poll_timeout)
+            except ZMQError, e:
+                raise
+            except Exception, e:
+                if hasattr(e, 'errno') and e.errno == errno.EINTR:
+                    logging.warning("Interrupted system call", exc_info=1)
+                    continue
+                else:
+                    raise
+
+            if self._blocking_log_threshold is not None:
+                signal.setitimer(signal.ITIMER_REAL,
+                                 self._blocking_log_threshold, 0)
+
+            # Pop one fd at a time from the set of pending fds and run
+            # its handler. Since that handler may perform actions on
+            # other file descriptors, there may be reentrant calls to
+            # this IOLoop that update self._events
+            self._events.update(event_pairs)
+            while self._events:
+                fd, events = self._events.popitem()
+                try:
+                    self._handlers[fd](fd, events)
+                except (KeyboardInterrupt, SystemExit):
+                    raise
+                except (OSError, IOError), e:
+                    if e[0] == errno.EPIPE:
+                        # Happens when the client closes the connection
+                        pass
+                    else:
+                        logging.error("Exception in I/O handler for fd %s",
+                                      fd, exc_info=True)
+                except:
+                    logging.error("Exception in I/O handler for fd %s",
+                                  fd, exc_info=True)
+        # reset the stopped flag so another start/stop pair can be issued
+        self._stopped = False
+        if self._blocking_log_threshold is not None:
+            signal.setitimer(signal.ITIMER_REAL, 0, 0)
+
+    def stop(self):
+        """Stop the loop after the current event loop iteration is complete.
+        If the event loop is not currently running, the next call to start()
+        will return immediately.
+
+        To use asynchronous methods from otherwise-synchronous code (such as
+        unit tests), you can start and stop the event loop like this:
+          ioloop = IOLoop()
+          async_method(ioloop=ioloop, callback=ioloop.stop)
+          ioloop.start()
+        ioloop.start() will return after async_method has run its callback,
+        whether that callback was invoked before or after ioloop.start.
+        """
+        self._running = False
+        self._stopped = True
+        self._wake()
+
+    def running(self):
+        """Returns true if this IOLoop is currently running."""
+        return self._running
+
+    def add_timeout(self, deadline, callback):
+        """Calls the given callback at the time deadline from the I/O loop."""
+        timeout = _Timeout(deadline, callback)
+        bisect.insort(self._timeouts, timeout)
+        return timeout
+
+    def remove_timeout(self, timeout):
+        self._timeouts.remove(timeout)
+
+    def add_callback(self, callback):
+        """Calls the given callback on the next I/O loop iteration.
+
+        This is thread safe because set.add is an atomic operation. The rest
+        of the API is not thread safe.
+        """
+        self._callbacks.add(callback)
+        self._wake()
+
+    def remove_callback(self, callback):
+        """Removes the given callback from the next I/O loop iteration."""
+        self._callbacks.remove(callback)
+
+    def _wake(self):
+        try:
+            self._waker_writer.write("x")
+        except IOError:
+            pass
+
+    def _run_callback(self, callback):
+        try:
+            callback()
+        except (KeyboardInterrupt, SystemExit):
+            raise
+        except:
+            self.handle_callback_exception(callback)
+
+    def handle_callback_exception(self, callback):
+        """This method is called whenever a callback run by the IOLoop
+        throws an exception.
+
+        By default simply logs the exception as an error.  Subclasses
+        may override this method to customize reporting of exceptions.
+
+        The exception itself is not passed explicitly, but is available
+        in sys.exc_info.
+        """
+        logging.error("Exception in callback %r", callback, exc_info=True)
+
+    def _read_waker(self, fd, events):
+        try:
+            while True:
+                self._waker_reader.read()
+        except IOError:
+            pass
+
+    def _set_nonblocking(self, fd):
+        flags = fcntl.fcntl(fd, fcntl.F_GETFL)
+        fcntl.fcntl(fd, fcntl.F_SETFL, flags | os.O_NONBLOCK)
+
+    def _set_close_exec(self, fd):
+        flags = fcntl.fcntl(fd, fcntl.F_GETFD)
+        fcntl.fcntl(fd, fcntl.F_SETFD, flags | fcntl.FD_CLOEXEC)
+
+
+class _Timeout(object):
+    """An IOLoop timeout, a UNIX timestamp and a callback"""
+
+    # Reduce memory overhead when there are lots of pending callbacks
+    __slots__ = ['deadline', 'callback']
+
+    def __init__(self, deadline, callback):
+        self.deadline = deadline
+        self.callback = callback
+
+    def __cmp__(self, other):
+        return cmp((self.deadline, id(self.callback)),
+                   (other.deadline, id(other.callback)))
+
+
+class PeriodicCallback(object):
+    """Schedules the given callback to be called periodically.
+
+    The callback is called every callback_time milliseconds.
+    """
+    def __init__(self, callback, callback_time, io_loop=None):
+        self.callback = callback
+        self.callback_time = callback_time
+        self.io_loop = io_loop or IOLoop.instance()
+        self._running = True
+
+    def start(self):
+        timeout = time.time() + self.callback_time / 1000.0
+        self.io_loop.add_timeout(timeout, self._run)
+
+    def stop(self):
+        self._running = False
+
+    def _run(self):
+        if not self._running: return
+        try:
+            self.callback()
+        except (KeyboardInterrupt, SystemExit):
+            raise
+        except:
+            logging.error("Error in periodic callback", exc_info=True)
+        self.start()
+
+class DelayedCallback(PeriodicCallback):
+    """Schedules the given callback to be called once.
+
+    The callback is called after the object is created by callback_time milliseconds.
+    """
+    
+    def _run(self):
+        PeriodicCallback._run(self)
+        self._stop()

zmq/eventloop/win32_support.py

+# NOTE: win32 support is currently experimental, and not recommended
+# for production use.
+
+import ctypes
+import ctypes.wintypes
+import os
+import socket
+import errno
+
+
+# See: http://msdn.microsoft.com/en-us/library/ms738573(VS.85).aspx
+ioctlsocket = ctypes.windll.ws2_32.ioctlsocket
+ioctlsocket.argtypes = (ctypes.wintypes.HANDLE, ctypes.wintypes.LONG, ctypes.wintypes.ULONG)
+ioctlsocket.restype = ctypes.c_int
+
+# See: http://msdn.microsoft.com/en-us/library/ms724935(VS.85).aspx
+SetHandleInformation = ctypes.windll.kernel32.SetHandleInformation
+SetHandleInformation.argtypes = (ctypes.wintypes.HANDLE, ctypes.wintypes.DWORD, ctypes.wintypes.DWORD)
+SetHandleInformation.restype = ctypes.wintypes.BOOL
+
+HANDLE_FLAG_INHERIT = 0x00000001
+
+
+F_GETFD = 1
+F_SETFD = 2
+F_GETFL = 3
+F_SETFL = 4
+
+FD_CLOEXEC = 1
+
+os.O_NONBLOCK = 2048
+
+FIONBIO = 126
+
+
+def fcntl(fd, op, arg=0):
+    if op == F_GETFD or op == F_GETFL:
+        return 0
+    elif op == F_SETFD:
+        # Check that the flag is CLOEXEC and translate
+        if arg == FD_CLOEXEC:
+            success = SetHandleInformation(fd, HANDLE_FLAG_INHERIT, arg)
+            if not success:
+                raise ctypes.GetLastError()
+        else:
+            raise ValueError("Unsupported arg")
+    #elif op == F_SETFL:
+        ## Check that the flag is NONBLOCK and translate
+        #if arg == os.O_NONBLOCK:
+            ##pass
+            #result = ioctlsocket(fd, FIONBIO, 1)
+            #if result != 0:
+                #raise ctypes.GetLastError()
+        #else:
+            #raise ValueError("Unsupported arg")
+    else:
+        raise ValueError("Unsupported op")
+
+
+class Pipe(object):
+    """Create an OS independent asynchronous pipe"""
+    def __init__(self):
+        # Based on Zope async.py: http://svn.zope.org/zc.ngi/trunk/src/zc/ngi/async.py
+
+        self.writer = socket.socket()
+        # Disable buffering -- pulling the trigger sends 1 byte,
+        # and we want that sent immediately, to wake up ASAP.
+        self.writer.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
+
+        count = 0
+        while 1:
+            count += 1
+            # Bind to a local port; for efficiency, let the OS pick
+            # a free port for us.
+            # Unfortunately, stress tests showed that we may not
+            # be able to connect to that port ("Address already in
+            # use") despite that the OS picked it.  This appears
+            # to be a race bug in the Windows socket implementation.
+            # So we loop until a connect() succeeds (almost always
+            # on the first try).  See the long thread at
+            # http://mail.zope.org/pipermail/zope/2005-July/160433.html
+            # for hideous details.
+            a = socket.socket()
+            a.bind(("127.0.0.1", 0))
+            connect_address = a.getsockname()  # assigned (host, port) pair
+            a.listen(1)
+            try:
+                self.writer.connect(connect_address)
+                break    # success
+            except socket.error, detail:
+                if detail[0] != errno.WSAEADDRINUSE:
+                    # "Address already in use" is the only error
+                    # I've seen on two WinXP Pro SP2 boxes, under
+                    # Pythons 2.3.5 and 2.4.1.
+                    raise
+                # (10048, 'Address already in use')
+                # assert count <= 2 # never triggered in Tim's tests
+                if count >= 10:  # I've never seen it go above 2
+                    a.close()
+                    self.writer.close()
+                    raise socket.error("Cannot bind trigger!")
+                # Close `a` and try again.  Note:  I originally put a short
+                # sleep() here, but it didn't appear to help or hurt.
+                a.close()
+
+        self.reader, addr = a.accept()
+        self.reader.setblocking(0)
+        self.writer.setblocking(0)
+        a.close()
+        self.reader_fd = self.reader.fileno()
+
+    def read(self):
+        """Emulate a file descriptors read method"""
+        try:
+            return self.reader.recv(1)
+        except socket.error, ex:
+            if ex.args[0] == errno.EWOULDBLOCK:
+                raise IOError
+            raise
+
+    def write(self, data):
+        """Emulate a file descriptors write method"""
+        return self.writer.send(data)

zmq/eventloop/zmqstream.py

+#
+# Copyright 2009 Facebook
+#
+# Licensed 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.
+
+"""A utility class to send to and recv from a non-blocking socket."""
+
+# import errno
+# import socket
+import logging
+import time
+import zmq
+import ioloop
+
+class ZMQStream(object):
+    """A utility class to register callbacks when a zmq socket sends and receives
+    
+    For use with zmq.eventloop.ioloop
+
+    There are 3 main methods:
+    on_recv(callback):
+        register a callback to be run every time the socket has something to receive
+    on_send(callback):
+        register a callback to be run every time you call send
+    on_err(callback):
+        register a callback to be run every time there is an error
+    send(msg, callback=None)
+        perform a send that will trigger the callback
+        if callback is passed, on_send is also called
+        There is also send_multipart()
+    
+    Two other methods for deactivating the callbacks:
+    stop_on_recv():
+        turn off the recv callback
+    stop_on_send():
+        turn off the send callback
+    stop_on_err():
+        turn off the error callback
+
+    """
+    
+    socket = None
+    io_loop = None
+    
+    def __init__(self, socket, io_loop=None):
+        self.socket = socket
+        self.io_loop = io_loop or ioloop.IOLoop.instance()
+        self._tosend = None
+        # self._recv_buffer = ""
+        # self._send_buffer = ""
+        self._recv_callback = None
+        self._send_callback = None
+        self._close_callback = None
+        self._errback = None
+        self._state = zmq.POLLERR
+        self.io_loop.add_handler(self.socket, self._handle_events, self._state)
+        
+        # shortcircuit some socket methods
+        self.bind = self.socket.bind
+        self.connect = self.socket.connect
+    
+    def stop_on_recv(self):
+        """disable callback and automatic receiving"""
+        self._recv_callback = None
+        self._drop_io_state(zmq.POLLIN)
+    
+    def stop_on_send(self):
+        """disable callback on sending"""
+        self._send_callback = None
+        self._drop_io_state(zmq.POLLOUT)
+    
+    def stop_on_err(self):
+        self._errback = None
+        # self._drop_io_state(zmq.POLLOUT)
+    
+    def on_recv(self, callback):
+        """register a callback to be called on each recv.
+        callback must take exactly one argument, which will be a
+        list, returned by socket.recv_multipart()."""
+        # assert not self._recv_callback, "Already receiving"
+        self._recv_callback = callback
+        self._add_io_state(zmq.POLLIN)
+    
+    def on_send(self, callback):
+        """register a callback to be called on each send
+        with no arguments (?)
+        """
+        self._add_io_state(zmq.POLLOUT)
+        self._send_callback = callback
+        
+    def on_err(self, callback):
+        """register a callback to be called on each send
+        with no arguments (?)
+        """
+        # self._add_io_state(zmq.POLLOUT)
+        self._errback = callback
+        
+                
+    def send(self, msg, callback=None):
+        """send a message, optionally also register
+        """
+        return self.send_multipart([msg], callback=callback)
+
+    def send_multipart(self, msg, callback=None):
+        """send a multipart message
+        """
+        # self._check_closed()
+        self._tosend = msg
+        callback = callback or self._send_callback
+        if callback is not None:
+            self.on_send(callback)
+        else:
+            self.on_send(lambda : None)
+    
+    def set_close_callback(self, callback):
+        """Call the given callback when the stream is closed."""
+        self._close_callback = callback
+
+    def close(self):
+        """Close this stream."""
+        if self.socket is not None:
+            self.io_loop.remove_handler(self.socket)
+            self.socket.close()
+            self.socket = None
+            if self._close_callback:
+                self._run_callback(self._close_callback)
+
+    def receiving(self):
+        """Returns true if we are currently receiving from the stream."""
+        return self._recv_callback is not None
+
+    def sending(self):
+        """Returns true if we are currently sending to the stream."""
+        return self._tosend is not None
+
+    def closed(self):
+        return self.socket is None
+
+    def _run_callback(self, callback, *args, **kwargs):
+        try:
+            callback(*args, **kwargs)
+        except:
+            # Close the socket on an uncaught exception from a user callback
+            # (It would eventually get closed when the socket object is
+            # gc'd, but we don't want to rely on gc happening before we
+            # run out of file descriptors)
+            self.close()
+            # Re-raise the exception so that IOLoop.handle_callback_exception
+            # can see it and log the error
+            raise
+
+    def _handle_events(self, fd, events):
+        """This method is the actual handler for IOLoop, that gets called whenever
+        an event on my socket is posted. It dispatches to _handle_recv, etc."""
+        # print "handling events"
+        if not self.socket:
+            logging.warning("Got events for closed stream %s", fd)
+            return
+        if events & zmq.POLLIN:
+            self._handle_recv()
+        if not self.socket:
+            return
+        if events & zmq.POLLOUT:
+            self._handle_send()
+        if not self.socket:
+            return
+        if events & zmq.POLLERR:
+            self._handle_error()
+            return
+        state = zmq.POLLERR
+        if self.receiving():
+            state |= zmq.POLLIN
+        if self._tosend is not None:
+            state |= zmq.POLLOUT
+        if state != self._state:
+            self._state = state
+            self.io_loop.update_handler(self.socket, self._state)
+            
+    def _handle_recv(self):
+        # print "handling recv"
+        try:
+            msg = self.socket.recv_multipart()
+        except zmq.ZMQError:
+            logging.warning("RECV Error")
+        else:
+            if self._recv_callback:
+                callback = self._recv_callback
+                # self._recv_callback = None
+                self._run_callback(callback, msg)
+                
+        # self.update_state()
+        
+
+    def _handle_send(self):
+        # print "handling send"
+        if not self._tosend:
+            return
+        self.socket.send_multipart(self._tosend)
+        self._tosend = None
+        if self._send_callback:
+            callback = self._send_callback
+            self._run_callback(callback)
+        
+        # unregister from event loop:
+        self._drop_io_state(zmq.POLLOUT)
+        
+        # self.update_state()
+    
+    def _handle_error(self):
+        # if evt & zmq.POLLERR:
+        logging.warning("handling error..")
+        if self._errback is not None:
+            self._errback()
+        else:
+            raise zmq.ZMQError()
+
+
+        # raise zmq.ZMQError()
+
+    def _check_closed(self):
+        if not self.socket:
+            raise IOError("Stream is closed")
+
+    def _add_io_state(self, state):
+        if not self._state & state:
+            self._state = self._state | state
+            self.io_loop.update_handler(self.socket, self._state)
+    
+    def _drop_io_state(self, state):
+        if self._state & state:
+            self._state = self._state & (~state)
+            self.io_loop.update_handler(self.socket, self._state)
+    
+
Add a comment to this file

zmq/tests/._test_multipart.py

Binary file added.

zmq/tests/__init__.py

+#
+#    Copyright (c) 2010 Brian E. Granger
+#
+#    This file is part of pyzmq.
+#
+#    pyzmq is free software; you can redistribute it and/or modify it under
+#    the terms of the Lesser GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    pyzmq is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    Lesser GNU General Public License for more details.
+#
+#    You should have received a copy of the Lesser GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+from unittest import TestCase
+
+import zmq
+
+#-----------------------------------------------------------------------------
+# Utilities
+#-----------------------------------------------------------------------------
+
+
+class BaseZMQTestCase(TestCase):
+
+    def setUp(self):
+        self.context = zmq.Context()
+
+    def create_bound_pair(self, type1, type2, interface='tcp://127.0.0.1'):
+        """Create a bound socket pair using a random port."""
+        s1 = zmq.Socket(self.context, type1)
+        port = s1.bind_to_random_port(interface)
+        s2 = zmq.Socket(self.context, type2)
+        s2.connect('%s:%s' % (interface, port))
+        return s1, s2
+
+    def ping_pong(self, s1, s2, msg):
+        s1.send(msg)
+        msg2 = s2.recv()
+        s2.send(msg2)
+        msg3 = s1.recv()
+        return msg3
+
+    def ping_pong_json(self, s1, s2, o):
+        s1.send_json(o)
+        o2 = s2.recv_json()
+        s2.send_json(o2)
+        o3 = s1.recv_json()
+        return o3
+
+    def ping_pong_pyobj(self, s1, s2, o):
+        s1.send_pyobj(o)
+        o2 = s2.recv_pyobj()
+        s2.send_pyobj(o2)
+        o3 = s1.recv_pyobj()
+        return o3
+
+    def assertRaisesErrno(self, errno, func, *args):
+        try:
+            func(*args)
+        except zmq.ZMQError, e:
+            self.assertEqual(e.errno, errno, "wrong error raised, expected '%s' \
+got '%s'" % (zmq.ZMQError(errno), zmq.ZMQError(e.errno)))
+        else:
+            self.fail("Function did not raise any error")
+        
+
+
+class PollZMQTestCase(BaseZMQTestCase):
+    pass
+

zmq/tests/test_context.py

+#
+#    Copyright (c) 2010 Brian E. Granger
+#
+#    This file is part of pyzmq.
+#
+#    pyzmq is free software; you can redistribute it and/or modify it under
+#    the terms of the Lesser GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    pyzmq is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    Lesser GNU General Public License for more details.
+#
+#    You should have received a copy of the Lesser GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+import zmq
+from zmq.tests import BaseZMQTestCase
+
+
+from zmq.tests import BaseZMQTestCase
+
+#-----------------------------------------------------------------------------
+# Tests
+#-----------------------------------------------------------------------------
+
+
+class TestContext(BaseZMQTestCase):
+
+    def test_init(self):
+        c1 = zmq.Context()
+        self.assert_(isinstance(c1, zmq.Context))
+        del c1
+        c2 = zmq.Context()
+        self.assert_(isinstance(c2, zmq.Context))
+        del c2
+        c3 = zmq.Context()
+        self.assert_(isinstance(c3, zmq.Context))
+        del c3
+
+    def test_fail_init(self):
+        self.assertRaisesErrno(zmq.EINVAL, zmq.Context, 0)
+

zmq/tests/test_message.py

+#
+#    Copyright (c) 2010 Brian E. Granger
+#
+#    This file is part of pyzmq.
+#
+#    pyzmq is free software; you can redistribute it and/or modify it under
+#    the terms of the Lesser GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    pyzmq is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    Lesser GNU General Public License for more details.
+#
+#    You should have received a copy of the Lesser GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+import copy
+from sys import getrefcount as grc
+import time
+from unittest import TestCase
+
+import zmq
+from zmq.tests import PollZMQTestCase
+
+#-----------------------------------------------------------------------------
+# Tests
+#-----------------------------------------------------------------------------
+
+class TestMessage(TestCase):
+
+    def test_above_30(self):
+        """Message above 30 bytes are never copied by 0MQ."""
+        for i in range(5, 16):  # 32, 64,..., 65536
+            s = (2**i)*'x'
+            self.assertEquals(grc(s), 2)
+            m = zmq.Message(s)
+            self.assertEquals(grc(s), 4)
+            del m
+            self.assertEquals(grc(s), 2)
+            del s
+
+    def test_str(self):
+        """Test the str representations of the Messages."""
+        for i in range(16):
+            s = (2**i)*'x'
+            m = zmq.Message(s)
+            self.assertEquals(s, str(s))
+            self.assert_(s is str(s))
+
+    def test_len(self):
+        """Test the len of the Messages."""
+        for i in range(16):
+            s = (2**i)*'x'
+            m = zmq.Message(s)
+            self.assertEquals(len(s), len(s))
+
+    def test_lifecycle1(self):
+        """Run through a ref counting cycle with a copy."""
+        for i in range(5, 16):  # 32, 64,..., 65536
+            s = (2**i)*'x'
+            self.assertEquals(grc(s), 2)
+            m = zmq.Message(s)
+            self.assertEquals(grc(s), 4)
+            m2 = copy.copy(m)
+            self.assertEquals(grc(s), 5)
+            self.assertEquals(s, str(m))
+            self.assertEquals(s, str(m2))
+            self.assert_(s is str(m))
+            self.assert_(s is str(m2))
+            del m2
+            self.assertEquals(grc(s), 4)
+            del m
+            self.assertEquals(grc(s), 2)
+            del s
+
+    def test_lifecycle2(self):
+        """Run through a different ref counting cycle with a copy."""
+        for i in range(5, 16):  # 32, 64,..., 65536
+            s = (2**i)*'x'
+            self.assertEquals(grc(s), 2)
+            m = zmq.Message(s)
+            self.assertEquals(grc(s), 4)
+            m2 = copy.copy(m)
+            self.assertEquals(grc(s), 5)
+            self.assertEquals(s, str(m))
+            self.assertEquals(s, str(m2))
+            self.assert_(s is str(m))
+            self.assert_(s is str(m2))
+            del m
+            self.assertEquals(grc(s), 4)
+            del m2
+            self.assertEquals(grc(s), 2)
+            del s
+

zmq/tests/test_multipart.py

+#
+#    Copyright (c) 2010 Brian E. Granger
+#
+#    This file is part of pyzmq.
+#
+#    pyzmq is free software; you can redistribute it and/or modify it under
+#    the terms of the Lesser GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    pyzmq is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    Lesser GNU General Public License for more details.
+#
+#    You should have received a copy of the Lesser GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+import zmq
+
+from zmq.tests import BaseZMQTestCase
+
+#-----------------------------------------------------------------------------
+# Tests
+#-----------------------------------------------------------------------------
+
+class TestMultipart(BaseZMQTestCase):
+
+    def test_xrep_xreq(self):
+        xrep, xreq = self.create_bound_pair(zmq.XREP, zmq.XREQ)
+
+        msg1 = 'message1'
+        xreq.send(msg1)
+        ident = xrep.recv()
+        more = xrep.rcvmore()
+        self.assertEquals(more, True)
+        msg2 = xrep.recv()
+        self.assertEquals(msg1, msg2)
+        more = xrep.rcvmore()
+        self.assertEquals(more, False)
+

zmq/tests/test_pair.py

+#
+#    Copyright (c) 2010 Brian E. Granger
+#
+#    This file is part of pyzmq.
+#
+#    pyzmq is free software; you can redistribute it and/or modify it under
+#    the terms of the Lesser GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    pyzmq is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    Lesser GNU General Public License for more details.
+#
+#    You should have received a copy of the Lesser GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+import zmq
+
+from zmq.tests import BaseZMQTestCase
+
+#-----------------------------------------------------------------------------
+# Tests
+#-----------------------------------------------------------------------------
+
+class TestPair(BaseZMQTestCase):
+
+    def test_basic(self):
+        s1, s2 = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
+
+        msg1 = 'message1'
+        msg2 = self.ping_pong(s1, s2, msg1)
+        self.assertEquals(msg1, msg2)
+
+    def test_multiple(self):
+        s1, s2 = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
+
+        for i in range(10):
+            msg = i*' '
+            s1.send(msg)
+
+        for i in range(10):
+            msg = i*' '
+            s2.send(msg)
+
+        for i in range(10):
+            msg = s1.recv()
+            self.assertEquals(msg, i*' ')
+
+        for i in range(10):
+            msg = s2.recv()
+            self.assertEquals(msg, i*' ')
+
+    def test_json(self):
+        s1, s2 = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
+        o = dict(a=10,b=range(10))
+        o2 = self.ping_pong_json(s1, s2, o)
+
+    def test_pyobj(self):
+        s1, s2 = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
+        o = dict(a=10,b=range(10))
+        o2 = self.ping_pong_pyobj(s1, s2, o)
+

zmq/tests/test_poll.py

+#
+#    Copyright (c) 2010 Brian E. Granger
+#
+#    This file is part of pyzmq.
+#
+#    pyzmq is free software; you can redistribute it and/or modify it under
+#    the terms of the Lesser GNU General Public License as published by
+#    the Free Software Foundation; either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    pyzmq is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    Lesser GNU General Public License for more details.
+#
+#    You should have received a copy of the Lesser GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+#-----------------------------------------------------------------------------
+# Imports
+#-----------------------------------------------------------------------------
+
+import time
+from unittest import TestCase
+
+import zmq
+from zmq.tests import PollZMQTestCase
+
+#-----------------------------------------------------------------------------
+# Tests
+#-----------------------------------------------------------------------------
+
+class TestPoll(PollZMQTestCase):
+
+    # This test is failing due to this issue:
+    # http://github.com/sustrik/zeromq2/issues#issue/26
+    def test_pair(self):
+        s1, s2 = self.create_bound_pair(zmq.PAIR, zmq.PAIR)
+