| LastChangedDate: | |
|---|---|
| LastChangedRevision: | |
| LastChangedBy: |
This is the fifth part of the Twisted tutorial :doc:`Twisted from Scratch, or The Evolution of Finger <index>` .
In this part we will add new several new backends to our finger service using
the component-based architecture developed in :doc:`The Evolution of Finger: moving to a component based architecture <components>` . This will
show just how convenient it is to implement new back-ends when we move to a
component based architecture. Note that here we also use an interface we
previously wrote, FingerSetterFactory , by supporting one single
method. We manage to preserve the service's ignorance of the network.
:download:`finger19b_changes.py <listings/finger/finger19b_changes.py>`
.. literalinclude:: listings/finger/finger19b_changes.py
Full source code here:
:download:`finger19b.tac <listings/finger/finger19b.tac>`
.. literalinclude:: listings/finger/finger19b.tac
We've already written this, but now we get more for less work: the network code is completely separate from the back-end.
:download:`finger19c_changes.py <listings/finger/finger19c_changes.py>`
.. literalinclude:: listings/finger/finger19c_changes.py
Full source code here:
:download:`finger19c.tac <listings/finger/finger19c.tac>`
.. literalinclude:: listings/finger/finger19c.tac
Not much to say except that now we can be churn out backends like crazy. Feel like doing a back-end for Advogato , for example? Dig out the XML-RPC client support Twisted has, and get to work!