PyInvoke is a transparent-rpc meant to ease control of remote
machines, with easy processing of their output, and with maximal
PyInvoke inspired a competitor. This competitor took the idea even
further and created a possibly better implementation:
- RPyC: A
reimplementation of PyInvoke, but also implements symmetric
requests and other goodies.
Is PyInvoke for you?
If you run over a slow or unreliable network, then PyInvoke will not
work well. PyInvoke assumes a fast reliable network. Fortunatly this
is the case in many local LANs of many potential users. PyInvoke is
also NOT optimized for minimal network use and will typically not work
as well as a specifically-created protocol for a specific purpose.
If you currently control multiple machines with automated SSH/telnet
scripts, or implementing specific network protocols or using any
existing semi-transparent RPC-library, then it is very likely that
PyInvoke can ease your job.
What can PyInvoke do? What can't it do?
PyInvoke can transparently import modules on remote machines, creating
local proxy objects for them, allowing transparent access to the
remote module objects. Those modules can then be used "natively", with
the resulting objects also being remote, but transparently proxied
into "feeling" local. A local proxy is said to be a "network
reference" to an object on the server-side.
PyInvoke does not allow "network references" from the server to the
client. Thus, all objects the client gives the server functions as
arguments are copied. This means, for example, that you cannot hand a
Window object to the server and let it draw on the window. It will
simply try to draw on a copy of the Window instance. It works just
fine the other way around though: You can get a Window object as a
return value of a function on the server, and invoke its methods
Why yet another transparent RPC?
Because no existing transparent RPC can be used with the minimal fuss
that PyInvoke can. Because with PyInvoke, the server is a small
component that needs not be touched. This allows all modifications to
occur only in the client side, which is especially useful when running
servers on multiple machines of multiple platforms.
Because PyInvoke takes transparency to a new level, abstracting even
more the presense of the network.
PyInvoke can be downloaded here.
Last modified: Sat Aug 19 16:11:59 IDT 2006