This document is intended to capture some of the policies we would like all committers to follow when it comes to checking in changes into our SVN tree.

Commit Log Format

Each commit to the repository must have a non-empty log message. The message format should start with a one-line short summary prefixed with the Jira issue number. If you do not have a Jira issue number, create one before you commit. The short summary need not be a complete sentence with proper punctuation and grammar since it is best to keep it to 72 characters or less.

After the short summary line, you may continue the message with one or more paragraphs separated by an empty line. The empty line after the short summary is necessary if you want to add more text since source control tools like git may send the log message as an email and use the first line up to an empty line as the email subject.

Since we support many operating systems, it would be best to list which one the commit was tested on to let the community know what has been covered.

TS-#### short summary (72 chars or less), not a sentence

Tested: Ubuntu-9.0.4,OSX-10.5,FreeBSD-7.2,OpenSolaris-2009.06

More detailed explanatory text as necessary, patch attributions, and
what platforms the commit has been tested on.  Wrap it to about 72
characters or so.  In some contexts, the first line is treated as the
subject of an email and the rest of the text as the body.  The blank
line separating the summary from the body is critical (unless you omit
the body entirely); tools like rebase can get confused if you run the
two together.

In the future, I'd like to see the need for listing the operating systems tested on go away when we implement a testing environment that can accept pre-commit patch and verify that patch passes a series of smoke tests.

Trunk

Trunk is CTR, Commit-Then-Review, policy. This was discussed and voted on by the community a long time ago. This does grant a lof of freedom to committing experimental or unstable code to the trunk. However, with such powers, comes some responsibilities:

1. If the trunk is broken, i.e. it doesn't build and/or run even without your changes, please don't commit! No more fuel on the fire please. It should be relatively easy to track down which change set broke the build from the trunk buildbot dashboard and inform the committer or community.
2. You are responsible for latest trunk to build and at least start up with your changes before you commit to SVN, on one of our supported platforms. This typically implies that you should to do an `svn up` to your tree and build before committing.
3. At a minimum the the build should not break on the current primary buildbot slave which is Ubuntu Linux. If the primary build bot is broken, it is the commiter's responsibility to get the build working or find someone to help them.
4. If your changes result in a non-functioning Traffic Server (e.g. start fails, simple forward proxy browsing is broken, etc) please consider backing out your changes and submitting the changes for review under a TS Jira ticket and asking for reviewers.
5. If your changes are so large that you want to make partial commits, create a SVN branch or work on a local repository using a version control system like Git or Mercurial. Several of the developers in the community use Git and hg, and can provide help and tips on how to use it.

Release branches

All release branches (e.g. 2.0.x) should always be kept in a stable and functional state. The commit policy is RTC, Review Then Commit, and backporting changes from trunk should be voted on via the STATUS file on the respective branches.