Add a method to trigger change pollers early

[Phr33d0m]

Hello, I've encountered a (probably) unwanted/unexpected situation. I have GitPoller? set to 10 minutes.

• At min 0 gitpoller pulls (it finds no new commits).
• At min 2 a new commit is made.
• At min 3 I do a 'force build' on the IRC bot (i.e. <me> BuildBot: force build MyProject?). It does a git pull, finds the new commit and rebuilds with it.
• At minute 10 gitpoller finds the new commit and starts building again, even if the git commit has been already pulled and the project has already been built with that new commit.

Is there any way to prevent this from happening? I wouldn't want the buildslave to do double work if I decide to see fast results and force a build (through the IRC bot).

Regards.

[dustin]

There's no good way to correlate the force with the later change from the poller.

However, it would be nice to have a way to trigger the poller to poll early.

[Phr33d0m]

If the master and the slave are on the same system, this can be achieved by setting gitpoller's workdir= to slave's project source/ dir. That way the same directory gets updated and we can avoid double buildings.

If slaves are on other systems I think there's no way of doing it.

[tom.prince]

This won't work in master, since the gitpoller has been changed to not use the repository to store state.

In any case, this would cause changes to be lost (i.e. not recognized by buildbot) which would confuse some people. For example, the console would be not as useful.

[tom.prince]

There are now webhooks for triggering pollers early (and somebody was talking about adding support for that to IRC as well).

[dustin]

Oh, good point!

 https://github.com/buildbot/buildbot/commit/44d9b40f36ed6a2a232a3ffde60b4f0cea519652

So, this is fixed :)