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On 29.09.2012 07:36, radelphe wrote:
> Hi all,
>
> I'm new in Trac system, but I like it.
>
> I would like to call an external script when a ticket is created or
> closed or reopened.
> On that script I'd like to use ticket summary, status, and reporter
> (maybe other field too) as arguments.
> I searched on the archive, and I found this topic (snip)
> Anyone can help me please?
Well writing entire plugins is a bit over the top, even more as you seem
to rely on ready-made solutions.
In fact, the linked mailing-list thread contains plenty of valuable
hints, and building the solution is merely copy-paste and combine the
pieces. Look at the bare-bone ITicketChangeListener implementation
written by Chris Heller:
from trac.core import *
from trac.ticket import ITicketChangeListener
class TicketListenerPluginExample(Component):
""" The 'Hello World' of using the ITicketChangeListener interface
"""
implements(ITicketChangeListener)
# ITicketChangeListener Interface
def ticket_created(self, ticket):
self.log.info('Ticket created: %r' % ticket)
def ticket_changed(self, ticket, comment, author, old_values):
self.log.info('Ticket modified: %r' % ticket)
def ticket_deleted(self, ticket):
self.log.info('Ticket deleted: %r' % ticket)
Put this into a file, and save the file as
<env>/plugins/MyTicketChangeScriptCaller.py
to get it recognized by Trac. It's that simple.
Instead of logging you want to call out to a script. Fine, yoheeb's code
is right above:
Popen(["/bin/mycmd", "myarg"], env={"PATH": "/usr/bin"})
Putting it all together:
from subprocess import Popen
from trac.core import *
from trac.config import Option
from trac.ticket import ITicketChangeListener
class TicketChangeScript(Component):
""" Calling a script file on ticket changes."""
implements(ITicketChangeListener)
script = Option('ticket_change_script', 'call', '',
doc="File with path and common arguments")
# ITicketChangeListener Interface
def ticket_created(self, ticket):
self._call(ticket, 'created')
def ticket_changed(self, ticket, comment, author, old_values):
self._call(ticket, 'modified')
# def ticket_deleted(self, ticket):
# # Beware: We may not have all ticket properties here,
# # just ticket number.
# self._call(ticket, 'deleted')
def _call(self, tkt, tkt_change):
Popen([' '.join([script, tkt.id,
tkt['summary'], tkt_change])],
shell=True)
Additional pieces are
* additional option to read script from configruation instead of
hard-coding into the plugin
* factor general call out into a private method to prevent code duplication
* signal Popen to use the shell, note some differences between Unix and
Windows here: http://stackoverflow.com/questions/1253122
* extracting properties from Ticket object, that is given to each
change listener in the ticket argument, see other available properties
in the source: Ticket class in trac/ticket/model.py
In your `trac.ini` create a new section:
[ticket_change_script]
call = /usr/local/bin/my_script.sh -my_common_args
Your (BASH) script will get called effectively like so:
$> /bin/sh /usr/local/bin/my_script.sh -my_common_args <ticket.id>
<summary> <created|modified|deleted>
This is completely untested, but I hope it's clearer now.?
Steffen Hoffmann
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