Check if variable exists

Question

Is it possible for a bamboo-build to check if a variable exists? I'm having some trouble building a nightly-build-plan which can be run manually, because if it's run manually it passes the ${bamboo.ManualBuildTriggerReason.userName} to my shell-script which executes the nightly build, but if it's run scheduled it exits with an error "bad substitution" because the variable doesn't exist. I'd imagine my problem would be solved if I somehow could check beforehand, if the variable exists and only use it, if it does.

Kristof Boeyken1 · Answer

Perhaps a little bit tool late. There is a workaround.

In your bamboo plan, create a variable with the name: ManualBuildTriggerReason.userName

And leave its value empty.

In your script, this variable will be empty in case of a triggered build.

It will not be empty in case of a manual build.

gwohletz · Answer

I'm also looking for an answer to this question, i've tried all sorts of ways to test if the bamboo variables exist, but if they do not exist bamboo intercepts things before the script is even run which is very annoying.

Vince10 · Answer

I don't think, that the script has anything to do with what I'm asking, but here it is:

#!/bin/bash

user=$1;
pw=$2;
build_plans=(A-A A-B A-C A-D A-E A-F);
for plan in ${build_plans[@]}; do
        `dirname $0`/bamboo.sh --user $user --password $pw --action queueBuild --build "$plan" --wait
done
exit 0

Where bamboo.sh holds the server-info.