Re-ask: How to get bamboo to intelligently re-use build results?

[nbelakovski]

This is a re-ask of this question as it appears to have been both misunderstood and to have fallen off the radar.

The question boils down to getting bamboo to work nicely with a fast-forward merge strategy. In such a strategy, not every merge to the master branch results in a merge commit. Some simply re-point the master branch to the relevant commit, which might already have a build associated with it. Since builds can take a long time in some cases, it would be great if bamboo could automatically update the master branch plan to point to the results of the build from the development branch plan instead of re-running a build. Given that the commit hash would be the same in a case of a fast-forward merge, this would be completely safe to do (unless the build makes use of timestamps in a weird way, but that's a separate issue)

If bamboo isn't capable of this, how might one submit a ticket for it and try to get attention to said ticket?

[Foong]

Since Bamboo Script task can be scripted to perform different command depending on the branches, Bamboo will just run the build for the same commit in the master plan.

Have created the feature request https://jira.atlassian.com/browse/BAM-20074

[nbelakovski]

I can't comment on the ticket, but it would be nice in general if bamboo could trigger builds based on the tree hash instead of the commit hash. You can get the tree by `git show --pretty=format:%T HEAD`. This way someone could modify their commit message or change authorship without having to re-run tests.

Can see all commit metadata with git cat-file commit HEAD