ReleaseEngineering/DisposableProjectRepositories

What is a disposable project branch?

These are project branches that can be cloned fresh from any mozilla-central based repo with the full gamut of tests enabled. No l10n or nightlies for now. Similar to TryServer but for longer, and just for you. Unlike Try, the commit level on these branches is level_2 (and above) contributors only so please bear that in mind.

Do you need a disposable branch?

Ask yourself the following:

Does your project have an end date?

If your answer is No then you should follow the process at Project Branch Planning

If your project is a temporary feature sprint that needs its own rapid test coverage but will eventually be merged into mozilla-central and no longer be on its own by all means, please go ahead and

Book one of our fabulous "disposable" project branches

• Sign up below in the BOOKING SCHEDULE
• Make a request to IT to reset the repo for you as a clone from your own project repo (or default mozilla-central:tip). Copy the script below into bug request, replacing the REPO_PATH and TWIG with your repo and booked branch.

export REPO_PATH=[path to your repo]                 # eg: users/lsblakk_mozilla.com/staging
export TWIG=[alder|birch|cedar|holly|larch|maple]    # whichever twig you booked

cd /repo/hg/scripts/
./reset_pp_repo.sh -s /repo/hg/mozilla/$REPO_PATH -r tip -d $TWIG

• NOTE: Coordinate with IT when this repo gets reset to push immediately without hitting the webheads. Otherwise, the permissions won't be set correctly.
• Sit back and watch your builds and test results roll in (eg Alder, Birch, Cedar,Holly, Larch, Maple).
• Special note: the first push to your newly cloned repo may not trigger builds if the repo had been pushed to previously, which is bug 774862. If it does not, please re-open the bug and move it to mozilla.org :: Release Engineering with a comment 'Please restart the build scheduler'.
• It will take 3 build runs for the leak checking tools to establish themselves. Before the third run expect to see the builds marked as burning. Other than the leak check the builds should compile and test fine.

When you're done with one of our fabulous "disposable" project branches

Simply clear your data (bug, contact, dates) from the BOOKING SCHEDULE below. If someone is listed in the "Next in Line" column, please let them know you are done.

That's all there is to it!

Using a custom mozconfig

The mozconfigs used for builds live in the same source tree as the main code, eg

• Firefox: browser/config/mozconfigs/<platform>
• Mobile Native: mobile/android/config/mozconfigs/android
• Mobile XUL: mobile/xul/config/mozconfigs/android-xul

The 'nightly' file is used for optimised builds, 'debug' for debug. If you are unsure which file you need consult a build log to see which is used. You can adjust these as needed on your branch, and they will be carried over to mozilla-central when you merge back. Please take care with any mozconfig changes you merge back (eg exclude local conveniences).

Enabling/Disabling of platforms, tests, nightly updates

If you know you won't need some build platforms or tests you can help everyone by not using up machine resources on your pushes. Ask RelEng to disable them by filing a bug here.

Nightly builds and updates are disabled by default but can be enabled on request.

BOOKING SCHEDULE

Project Branch	Regist. bug	email address of borrower	User/Dev Team contact	Booking Dates	Next in Line
Alder	-	rjesup@mozilla.com	jesup, anant: WebRTC integration	2011-09-20 – indefinite	-
Ash	bug 801214 bug 801612	ctalbert@mozilla.com	ctalbert: Staging area for mozharness testing	2013-04-12 - indefinite	-
Birch	-	joduinn@mozilla.com	alternate mozilla-inbound for b2g	2013-04-10 -	-
Cedar	-	aki@mozilla.com	aki: mozharness talos, b2g, pandas, win8, aws testing	2012-06-25 - indefinite	-
Cypress	-	joduinn@mozilla.com	backup mozilla-inbound in case of prolonged closures	2013-04-26 -	-
Date	bug 860246	glandium@mozilla.com	android x86_64 build environment testing	2013-04-12 - 2013-05-15
Elm	-	-	-	-	-
Fig	bug 862793, bug 863286	mleibovic@mozilla.com	margaret: Fennec multipage about:home	2013-04-18 - 2013-06-01	-
Gum	Cache Work	dougt@mozilla.com	DougT: Cache	2013-12-31
Holly	-	-	-	-	-
-	-	-	-	-	-
Larch	bug 516752	billm, dvander	Multi-process browsing	2013-04-10 - unknown	-
Maple	bug 718121	bhackett@mozilla.com	supersnappy	5/14/2012 - indefinite	-
Oak	bug 790467	bbondy@mozilla.com	bbondy	2012-09-11 - 2013-09-11	-
Pine	bug 753113	badida@mozilla.com	benadida, MattN: Sign in to the browser and identity modules	2013-04-12 - indefinite	-

Be sure to keep a copy of anything you need from the repo prior to unbooking it.