Development Branches Policy
This page is used to describe the policy we use for the different software development branches. This page is about general principles, but as new releases are made the branche names used as examples become obsolete. For the situation around September 2008, see this mail and that one on the closing of .asu.dev .
The git repository can be seen at this address : http://git.openmoko.org/?p=openmoko.git
We want to release a product every few months. Every release will have a unique name (of course :-) )
The git server is at this address : git.openmoko.org
The current release name is ASU, so the current git branches for the release are :
There are several phases of a software release.
- Design phase:
- Designers release their design and create the software requirement specifications (SRSs).
- Developers and Testing Team give technical feedbacks based on the SRS.
- Designer and Test Team release the final SRS
- Developing phase:
- Developers start implementing the feature set (based on the SRS).
- For developers writing Software design specifications (SDSs) are recommended.
- Test Team creates the test cases (TC) based on the SRS.
- Designers collect feedback from all parties involved and adjust requirements (CRs) and issues CRs (This shall be done every carefully, the times of issuing CRs shall be limited. Less then three times is recommend.)
- Feature locked phase:
- Lock down all the features: No more feature are added or changed only removing of features is allowed.
- If there are some new ideas or features, leave them to the next release or use the general development branch.
- Developers finish their features.
- Release phase:
- Lock all the software versions.
- Only bug fixing is allowed here.
- Fully software testing of particular image (ST).
- Developers fix all the bugs from ST.
- When all fixable bugs are fixed, then release.
So every time we start developing a new release we branch from openmoko.dev into two branches:
- The stable branch, where every software package is only updated if it is considered to be sufficiently stable. It is up to the maintainer of that branch to make sure that the software meets these requirements. The name of that branch should be the name of the release. The auto image builder will generate ready to flash images whenever required to reflect the status of this branch. The name of this branch is org.openmoko.$(release_name).stable
- The development branch, where we add features which are still needed for _this_ release. All other feature have to go into the openmoko.dev branch. The developers should make sure that the code is at least buildable before it is committed into that branch. The auto image builder will generate ready to flash images daily to let the designers track the latest development. The branch name should be org.openmoko.$(release_name).dev
- The unstable branch is used to merge updates from upstream and to develop our OE modifications. All ideas / prototypes / unstable projects not included in the release will stay in the openmoko.dev branch and can be developed there independently from the release schedule.
Every developer related to the current release will work on the dev branch before release phase, and then merge into the stable branch.
In any case, all the project versions are specified on stable branch from the beginning to the end.
At developing phase, all the project versions shall be locked, exception those projects highly related to our product on dev branch.
At feature lock phase, all the projects version shall be locked, exception those projects that only controlled by Openmoko on dev branch. For our projects fixed version are recommend in this phase.
When entering releasing phase, every developers will switch to stable branch, and only bug fix is allowed here. Developers shall send out update request to distrobution team.
After testing team confirm that all fixable bug or all bug need to be fixed are fixed, release the image from stable branch. Merge the changes from stable branch to openmoko.dev, after release.
Here is a little graph that can explain things. The horizontal axis represents the time, the red lines represent some possible operations.
The fso-testing distro builds the version of the linux-openmoko kernel denotes as latest stable by the conf/distro/include/sane-srcrevs.inc file, which currently (24/9/08) in OE git (not OM git) on the org.openembedded.dev branch says:
SRCREV_pn-linux-openmoko ?= "ca19d156400f817960efe0d14680324b2ea34171"
In OM git, that same file (in the org.openmoko.dev branch) says:
SRCREV_pn-linux-openmoko ?= "a1e97c611253511ffc2d8c45e3e6d6894fa03fa3"
which matches the ipk in http://downloads.openmoko.org/repository/testing/om-gta02/
I have no idea what determines which version is built for the feeds at http://downloads.openmoko.org/repository/unstable/om-gta02/ since there is no published build configuration on downloads.openmoko.org anywhere to be found.
It's up the the person in charge of testing the linux-openmoko bitbake recipe to determine what the latest stable version in the feeds should be by updating that sane-srcrevs.inc file (after booting an image using that kernel of course).