181 lines
7.0 KiB
Plaintext
181 lines
7.0 KiB
Plaintext
.. image:: http://sflogo.sourceforge.net/sflogo.php?group_id=134329&type=7
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:height: 62
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:width: 210
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:alt: SourceForge.net Logo
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:target: http://sourceforge.net/projects/pyst/
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pyst: A Python Interface to Asterisk
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====================================
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Pyst consists of a set of interfaces and libraries to allow programming of
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Asterisk from python. The library currently supports AGI, AMI, and the parsing
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of Asterisk configuration files. The library also includes debugging facilities
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for AGI.
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Download from `Sourceforge project page`_.
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.. _`Sourceforge project page`: http://sourceforge.net/projects/pyst/
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Installation is the standard python install::
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tar xvf pyst.tar.gz
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cd pyst
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python setup.py install --prefix=/usr/local
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Documentation is currently only in python docstrings, you can use
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pythons built-in help facility::
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import asterisk
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help (asterisk)
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import asterisk.agi
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help (asterisk.agi)
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import asterisk.manager
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help (asterisk.manager)
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import asterisk.config
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help (asterisk.config)
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Some notes on platforms: We now specify "platforms = 'Any'" in
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``setup.py``. This means, the manager part of the package will probably
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run on any platform. The agi scripts on the other hand are called
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directly on the host where Asterisk is running. Since Asterisk doesn't
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run on windows platforms (and probably never will) the agi part of the
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package can only be run on Asterisk platforms.
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Credits
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-------
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Thanks to Karl Putland for writing the original package.
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Thanks to Matthew Nicholson for maintaining the package for some years
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and for handing over maintenance when he was no longer interested.
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Things to do for pyst
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---------------------
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This is the original changelog merged into the readme file. I'm not so
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sure I really want to change all these things (in particular the
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threaded implementation looks good to me). I will maintain a section
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summarizing the changes in this README, the ChangeLog won't be
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maintained any longer. Detailed changes will be available in the version
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control tool (currently svn).
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* ChangeLog:
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The ChangeLog needs to be updated from the monotone logs.
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* Documentation:
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All of pyst's inline documentation needs to be updated.
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* manager.py:
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This should be converted to be single threaded. Also there is a race
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condition when a user calls manager.logoff() followed by
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manager.close(). The close() function may still call logoff again if
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the socket thread has not yet cleared the _connected flag.
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A class should be made for each manager action rather than having a
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function in a manager class. The manager class should be adapted to
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have a send method that know the general format of the classes.
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Matthew Nicholson writes on the mailinglist (note that I'm not sure I'll do
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this, I'm currently satisfied with the threaded implementation):
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For pyst 0.3 I am planning to clean up the manager.py. There are
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several know issues with the code. No one has actually reported these
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as problems, but I have personally had trouble with these. Currently
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manager.py runs in several threads, the main program thread, a thread to
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read from the network, and an event distribution thread. This causes
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problems with non thread safe code such as the MySQLdb libraries. This
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design also causes problems when an event handler throws an exception
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that causes the event processing thread to terminate.
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The second problem is with the way actions are sent. Each action has a
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specific function associated with it in the manager object that takes
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all possible arguments that may ever be passed to that action. This
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makes the api somewhat rigid and the Manager object cluttered.
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To solve these problems I am basically going to copy the design of my
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Astxx manager library (written in c++) and make it more python like.
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Each action will be a different object with certain methods to handle
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various tasks, with one function in the actual Manager class to send the
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action. This will make the Manager class much smaller and much more
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flexible. The current code will be consolidated into a single threaded
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design with hooks to have the library process events and such. These
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hooks will be called from the host application's main loop.
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Upgrading from older versions
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-----------------------------
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If upgrading from...
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* 0.2:
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- ``get_header()`` methods in ``manager.py`` now work like
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``dict.get()`` instead of ``dict[key]``
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* 0.1.0:
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- ``agi.get_variable`` no longer throws an exception, instead it
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returns an empty string when a channel variable is not set.
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- ``manager.quit()`` has be renamed to ``manager.close()``
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Source Code Repository Access
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-----------------------------
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The current versions are kept in a Subversion repository on Sourceforge.
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You can check out the trunk with::
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svn co https://pyst.svn.sourceforge.net/svnroot/pyst/pyst/trunk pyst
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There is also a 0.2 branch in::
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https://pyst.svn.sourceforge.net/svnroot/pyst/pyst/branches/0.2
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which contains unreleased changes after 0.2 (which have been merged into
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trunk *after* changing how manager commands to asterisk are parsed).
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Released versions are in::
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https://pyst.svn.sourceforge.net/svnroot/pyst/pyst/tags
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For versions prior to the 0.2 release when Matthew Nicholson was
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maintaining pyst, the changes are kept in a `monotone`_ repository
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(monotone is a free distributed version control system). Please contact
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Matthew via Sourceforge if you're interested in intermediate versions.
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.. _`monotone`: http://monotone.ca/
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prior to that the sources are in the CVS repository on sourceforge.
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Changes
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-------
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Version 0.3: Minor feature enhancements
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New maintainer Ralf Schlatterbeck, this is my first release, please
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report any problems via the Sourceforge Bug-Tracker or email me
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directly. Thanks to Karl Putland for writing the original package.
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Thanks to Matthew Nicholson for maintaining the package for some years
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and for handing over maintenance when he was no longer interested.
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The parsing of answers from asterisk was completely rewritten. This
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should fix problems people were having with commands returning embedded
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'/' or empty lines. Some new manager commands added.
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- Add playdtmf manager command
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- add sippeers and sipshowpeer manager commands
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- rewritten manager communication
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- should no longer choke on '/' in answers returned from a manager
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command (fixes SF Bug 2947866)
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- should now correctly parse multi-line output with embedded empty
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lines, e.g. ``mgr.command('dialplan show')``
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- Bug-fix for list manipulation in ``event_dispatch``, thanks to Jan
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Mueller, see mailinglist comment from 2008-04-18
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- Merge unreleased changes from repository of Matthew Nicholson
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in particular a typo in ``agi.py`` for ``set_autohangup``, and change
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of ``get_header`` methods (see Upgrading instructions). The fixed
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``manager.command`` support is already in (with a different
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solution). The unreleased changes are also on the 0.2 branch in the
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subversion repository in case somebody is interested.
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See the ChangeLog for older changes.
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