kirikae / demo-tekton

Demo showing the difference between a Jenkinsfile pipeline and a Tekton pipeline doing the same tasks

Jenkins vs. Tekton Pipeliens Demo

Complete App

Deploy a complete application that has a frontend, backend, database and an "external api" useful for showcasing the value of Tekton

export PROJECT="quoter"

bash ./create_app.sh
bash ./create_tekton.sh

Jenkins Components

Steps for building the Jenkins Pipeline Components

export PROJECT="pipes"

bash ./create_jenkins.sh

Pipelines (Tekton)

There are two Tekton pipelines offered by this applicaiton. One, which utilises a shared workspace and one that doesn't. This demonstrates both the benefit containers can provide to testing and the speed benefits of using workspaces.

Pipelines with Workspaces and Caching

The pipeline below only clones the repo once and pypi modules oncce. This is then used throughout the test and build processes to speed up deployments. The pipeline run 25% quicker than the non-caching version.

Install the pipelines with workspaces:

export PROJECT="pipes"
cat ./tekton/pipeline-ws/*.yml | envsubst '${PROJECT}' | oc apply -n ${PROJECT} -f -

Pipelines with no caching

The pipeline below needs to clone and download the pypi modules 3 times, once for each pytest and again for the build.

Install the pipelines without workspaces:

export PROJECT="pipes"
cat ./tekton/pipeline-no-ws/*.yml | envsubst '${PROJECT}' | oc apply -n ${PROJECT} -f -

Application

export PROJECT="pipes"
export POSTGRESQL_DATABASE="quotes"
export POSTGRESQL_USER="user"
export POSTGRESQL_PASSWORD="`head /dev/urandom | base64 | head -c 13 ; echo ''`"
export external_imape_base_url="http://imagelookup.${PROJECT}.svc.cluster.local:8080"

cat ./app/manifests/backend/backend.yml | envsubst '${PROJECT} ${external_imape_base_url} ${POSTGRESQL_DATABASE} ${POSTGRESQL_USER} ${POSTGRESQL_PASSWORD}' | oc apply -n ${PROJECT} -f -

cat ./app/manifests/frontend/*.yml | envsubst '${PROJECT}' | oc apply -n ${PROJECT} -f -
oc apply -f ./app/manifests/imagelookup  -n ${PROJECT}

oc expose svc/frontend  -n ${PROJECT}