I can't find a way in the yaml spec reference to checkout a specific branch of a (linked) repository. Creating an extra linked repository for each branch isn't a clean solution in my opinion.
Does anyone know about this?
We ran into a similar problem, where we wanted to checkout specific tags or branches of dependencies, depending on the versions used in the main project that is being tested.
I did find a solution, but it is not exactly "clean" - in fact it is really complicated given the simplicity of what I wanted to achieve.
At the start of the build I defined a task, which parses the version of the dependency from the main build and exposes it as a "result variable". In our case they are all maven projects, so we use the Maven Pom Value Extractor plugin for this part.
Then I have defined stages to build each of dependencies. The first task in each of these stages uses a Script task to manually checkout the correct tag / branch of the dependency.
We use java specs so I don't have yaml version to hand, but the basic format is like this:
Stage 1 : Check dependency versions
Stage 2: Build dependency x
...More stages for other dependencies
- Build main product we want to test.
Oh, forgot to actually answer the question:
First we have a checkout task, which checks out the dependencies master branch.
Then, we have a script task with contents similar to below:
git branch -a
git checkout $EXPECTED
CURRENT=`git rev-parse --abbrev-ref HEAD`
if [ "$CURRENT" == "$EXPECTED"];
echo "Now on branch $CURRENT"
echo "On branch $CURRENT, either $EXPECTED does not exist or repo cache outdated
- We had to select the option: "Fetch Whole Repository" on each linked repo
- We had to make sure to checkout each dependency into it's own working directory (and set the script task's working directory to match the dependency in question
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