Can't figure out how to do variable substitution in my Tekton pipeline-CodePudding

So I'm not sure if this is actually a Bash issue or a Tekton issue. The problem occurs in my OpenShift (Tekton) pipeline. After having deployed my application, I have a step where I need to check if the Deployment has actually been created.

This is done like this:

until oc get deployment.apps/my-app-foo &> /dev/null
do
  echo . 
  sleep 2
done

In the snippet above, I've hardcoded the name of the Deployment "my-app". The suffix "-foo" is part of every Deployment resource. When hardcoded, it works, and I get my Deployment, as expected.

When I try to parameterize the name of the Deployment, my pipeline fails with the following error:

Error from server (NotFound): deployments.apps "my-app" not found
.
Error from server (NotFound): deployments.apps "my-app" not found
.
Error from server (NotFound): deployments.apps "my-app" not found
.

So the issue is obviously that the "-foo" suffix isn't added to my variable, and I can't figure out how to do this. Tried replacing the parentheses with curly braces, tried double quotes around the entire expression, and a few other variants.

Here's my code with variable substitution:

until oc get deployment.apps/$(params.pod-name)-foo &> /dev/null
do
  echo . 
  sleep 2
done

Can anyone tell what I'm doing wrong?

CodePudding user response：

Not entirely sure what the issue is, but seems it has something to do with Tekton variable substitution syntax.

Anyway, I managed to work around it by assigning the Tekton parameter to a bash variable, like this:

POD_NAME=$(params.pod-name)
SUFFIX='-foo'

And then I used these variables straight forward in the until loop like this:

until oc get deployment.apps/${POD_NAME}${SUFFIX} &> /dev/null
do
  echo . 
  sleep 2
done

PS. The suffix would probably work fine without being put in a variable, but I'm using it some other places in the same script, so that's why I put it there.