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Project Description

Pythonic bidirectional-rpc API built on top of ØMQ with pluggable encryption, authentication and heartbeating support.

Features

  1. ØMQ transport layer.
  2. All native python types supported (msgpack).
  3. First citizen exceptions.
  4. Bi-bidirectional (server can initiate calls to connected clients).
  5. Encryption based on CURVE.
  6. Pluggable Authentication.
  7. Pluggable Heartbeating.
  8. Pluggable Remote Call Routing.
  9. Works with tornado ioloop or gevent.
  10. Built-in proxy support. A server can delegate the work to another one.
  11. SyncClient (using zmq.REQ) to use within non event based processes. (Heartbeating, Authentication and job execution are not supported with the SyncClient.)

Installation

Dependencies are declared in setup.py and all automatically installed, but, pyzmq might build libzmq from bundled folder OR from your system wide libzmq. In later case you should make sure libzmq has been compiled with libsodium to take advantage of curve security features.

We recommend to install pyzmq with bundled libzmq explicitely if libzmq is already installed on your system.

$ pip install pyzmq --install-option='--zmq=bundled'

Tornado

$ pip install -e .[Tornado]

Gevent

$ pip install -e .[Gevent]

Execution

If both backends are installed, tornado is used by default. To force gevent over tornado, set the environment variable $NO_TORNADO to something.

$ NO_TORNADO=1 python script.py

Preview

The tornado Server

from pseud import Server


server = Server('service')
server.bind('tcp://127.0.0.1:5555')

@server.register_rpc
def hello(name):
    return 'Hello {0}'.format(name)

server.start()  # this will block forever

The tornado Client

# Assume the tornado IOLoop is running
from pseud import Client


client = Client('service', identity='client1', io_loop=loop)
client.connect('tcp://127.0.0.1:5555')

# Assume we are inside a coroutine
response = yield client.hello('Charly')
assert response == 'Hello Charly'

@client.register_rpc(name='draw.me.a.sheep')
def sheep():
    return 'beeeh'

The gevent Client

from pseud import Client


client = Client('service')
client.connect('tcp://127.0.0.1:5555')

assert client.hello('Charly').get() == 'Hello Charly'

The SyncClient

# to use within a non-asynchronous process or in a command interpreter
from pseud import SyncClient


client = SyncClient()
client.connect('tcp://127.0.0.1:5555')

assert client.hello('Charly') == 'Hello Charly'

The Server send a command to the client

# assume we are inside a coroutine
sheep = yield server.send_to('client1').draw.me.a.sheep()
assert sheep == 'beeeh'

Documentation

Pseud on Readthedocs

Release History

Release History

0.0.5

This version

History Node

TODO: Figure out how to actually get changelog content.

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0.0.4

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Download Files

Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pseud-0.0.5-py2-none-any.whl (17.8 kB) Copy SHA256 Checksum SHA256 2.7 Wheel Aug 27, 2014
pseud-0.0.5.tar.gz (13.7 kB) Copy SHA256 Checksum SHA256 Source Aug 27, 2014

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