nx/docs/shared/monorepo-ci-jenkins.md
2023-03-24 13:32:13 -04:00

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# Configuring CI Using Jenkins and Nx
Below is an example of a Jenkins setup for an Nx workspace - building and testing only what is affected.
Unlike `GitHub Actions` and `CircleCI`, you don't have the metadata to help you track the last successful run on `main`. In the example below, the base is set to `HEAD~1` (for push) or branching point (for pull requests), but a more robust solution would be to tag an SHA in the main job once it succeeds and then use this tag as a base. See the [nx-tag-successful-ci-run](https://github.com/nrwl/nx-tag-successful-ci-run) and [nx-set-shas](https://github.com/nrwl/nx-set-shas) (version 1 implements tagging mechanism) repositories for more information.
We also have to set `NX_BRANCH` explicitly.
```groovy
pipeline {
agent none
environment {
NX_BRANCH = env.BRANCH_NAME.replace('PR-', '')
}
stages {
stage('Pipeline') {
parallel {
stage('Main') {
when {
branch 'main'
}
agent any
steps {
sh "npm ci"
sh "npx nx format:check"
sh "npx nx affected --base=HEAD~1 -t lint --parallel=3"
sh "npx nx affected --base=HEAD~1 -t test --parallel=3"
sh "npx nx affected --base=HEAD~1 -t build --parallel=3"
}
}
stage('PR') {
when {
not { branch 'main' }
}
agent any
steps {
sh "npm ci"
sh "npx nx format:check"
sh "npx nx affected --base origin/${env.CHANGE_TARGET} -t lint --parallel=3"
sh "npx nx affected --base origin/${env.CHANGE_TARGET} -t test --parallel=3 --configuration=ci"
sh "npx nx affected --base origin/${env.CHANGE_TARGET} -t build --parallel=3"
}
}
}
}
}
}
```
The `pr` and `main` jobs implement the CI workflow.
{% nx-cloud-section %}
## Distributed CI with Nx Cloud
Read more about [Distributed Task Execution (DTE)](/core-features/distribute-task-execution).
```groovy
pipeline {
agent none
environment {
NX_BRANCH = env.BRANCH_NAME.replace('PR-', '')
}
stages {
stage('Pipeline') {
parallel {
stage('Main') {
when {
branch 'main'
}
agent any
steps {
sh "npm ci"
sh "npx nx-cloud start-ci-run --stop-agents-after='build'"
sh "npx nx format:check"
sh "npx nx affected --base=HEAD~1 -t lint --parallel=3 & npx nx affected --base=HEAD~1 -t test --parallel=3 --configuration=ci & npx nx affected --base=HEAD~1 -t build --parallel=3"
}
}
stage('PR') {
when {
not { branch 'main' }
}
agent any
steps {
sh "npm ci"
sh "npx nx-cloud start-ci-run --stop-agents-after='build'"
sh "npx nx format:check"
sh "npx nx affected --base origin/${env.CHANGE_TARGET} -t lint --parallel=3 & npx nx affected --base origin/${env.CHANGE_TARGET} -t test --parallel=3 --configuration=ci & npx nx affected --base origin/${env.CHANGE_TARGET} -t build --parallel=3"
}
}
# Add as many agent you want
stage('Agent1') {
agent any
steps {
sh "npm ci"
sh "npx nx-cloud start-agent"
}
}
stage('Agent2') {
agent any
steps {
sh "npm ci"
sh "npx nx-cloud start-agent"
}
}
stage('Agent3') {
agent any
steps {
sh "npm ci"
sh "npx nx-cloud start-agent"
}
}
}
}
}
}
```
{% /nx-cloud-section %}