Bamboo Yaml Spec Files checkout specific branch

[danieldaeschle]

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?

[Richard White [TechTime] · Accepted solution]

@danieldaeschle 

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

1. Extract dependency versions as result variables e.g `dependency_x_version` (Using pom value extractor)

Stage 2: Build dependency x

1. Script task which checks out git branch or tag based on result variable `dependency_x_version`
2. build dependency 1

...More stages for other dependencies

Final Stage:

- Build main product we want to test.

[danieldaeschle]

How do you manually checkout that branch?

[Richard White [TechTime]]

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:

#!/bin/bash -x

EXPECTED="${bamboo_variable_for_target_branch}"

git branch -a
git checkout $EXPECTED

CURRENT=`git rev-parse --abbrev-ref HEAD`
if [ "$CURRENT" == "$EXPECTED"];
then
echo "Now on branch $CURRENT"
exit 0
fi

echo "On branch $CURRENT, either $EXPECTED does not exist or repo cache outdated

Notes:

- 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

[Marcin Gardias]

Try sth. like this (requires Bamboo 6.10 or later)

version: 2

plan:
  project-key: PRJ
  key: PLAN
  name: Plan name
  master-branch: branchX

stages:
  - Default stage:
    - Default job

Default job:
  tasks: []

triggers: []

[danieldaeschle]

i need it for another repository which will be checked out, not the main repository.