Distributed component model for Python.
Project description
PyCOM is simple and easy-to-use distributed component model written in Python. PyCOM makes different parts of your network application isolated and independent, while allowing easy and straightforward interaction between them.
With PyCOM you build your application as a number of services, each running in it’s own process (or even on it’s own computer) and talking to each other via 0MQ. You maintain a PyCOM nameserver for finding services by their names (by the way, nameserver itself is a service).
Services provide interfaces, i.e. a named way of interacting with service. They are somewhat similar to interfaces in e.g. Java, but note that PyCOM does not perform any checks on interfaces. Interface usually has some amount of methods.
Services are identified by path with parts separated by slashes, e.g. /com/foo/group/service.
Interfaces are identified by name with parts separated by dots, e.g. com.foo.my-interface.
Highlights:
Python 2 and Python 3 support out-of-box
Free software (new BSD license)
Low level enough to build your own frameworks
… and still simple enough be used as is!
Doesn’t teach you how to do your job - just does it’s own
Without black magic and lots of autogenerated code
Easy and portable protocol
There is ongoing effort to create a C++ client library for PyCOM: https://bitbucket.org/divius/libpycom
Examples
Service example:
import pycom @pycom.interface("com.foo.example") class Query(object): @pycom.method("create") def method_create(self, request): return {"field1" : request.args} pycom.main()
Example service configuration:
{ "service": "/com/foo/example", "nameserver": "tcp://127.0.0.1:2012", "address": "tcp://127.0.0.1:2013" }
Example client code for this service:
import pycom pycom.configure(nameserver="tcp://127.0.0.1:2012") query = pycom.locate("com.foo.example") print query.invoke("create", 42) # Prints {"field1" : 42}
Quick start
To test:
$ python test.py
To build HTML documentation:
$ cd docs $ make html $ <your-browser> _build/html/index.html
To install:
$ python setup.py install
or via pip:
$ pip install pycom
Do not forget to read about known issues in the current version: http://packages.python.org/pycom/status.html#known-issues
Support
PyCOM repository and issue tracker are hosted on BitBucket.
Latest source code: https://bitbucket.org/divius/pycom/overview
Report bugs: https://bitbucket.org/divius/pycom/issues
Read documentation: http://packages.python.org/pycom
Enjoy =)
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