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Scaffold GitHub Repositories Using Cookiecutter

This example demonstrates how to quickly scaffold GitHub repositories using a Cookiecutter Template via Port Actions.

In addition, as cookiecutter is an open-source project you can make your own project template, learn more about it here.

Example - scaffolding golang template

Follow these steps to get started with the Golang template:

  1. Create the following as Jenkins Credentials:

    1. GITHUB_TOKEN - a fine-grained PAT with permissions to create repositories.
    2. PORT_CLIENT_ID - Port Client ID learn more.
    3. PORT_CLIENT_SECRET - Port Client Secret learn more.
      note

      Use Secret text as Credential type.

  2. Create a Port blueprint with the following properties:

note

Keep in mind this can be any blueprint you would like and this is just an example.

{
"identifier": "microservice",
"title": "Microservice",
"icon": "Microservice",
"schema": {
"properties": {
"description": {
"title": "Description",
"type": "string"
},
"url": {
"title": "URL",
"format": "url",
"type": "string"
}
},
"required": []
},
"mirrorProperties": {},
"calculationProperties": {},
"relations": {}
}
  1. Create Port action using the following JSON definition:
    note

    Make sure to replace the placeholders for JENKINS_URL and JOB_TOKEN.

[
{
"identifier": "scaffold",
"title": "Scaffold Golang Microservice",
"description": "Scaffold a new Microservice from a Cookiecutter teplate",
"icon": "Go",
"userInputs": {
"properties": {
"repo_name": {
"icon": "Microservice",
"title": "Repo Name",
"type": "string"
},
"github_org_name": {
"icon": "Github",
"title": "Github Org Name",
"type": "string"
}
},
"required": ["repo_name", "github_org_name"]
},
"invocationMethod": {
"type": "WEBHOOK",
"agent": false,
"url": "https://<JENKINS_URL>/generic-webhook-trigger/invoke?token=<JOB_TOKEN>",
"synchronized": false,
"method": "POST"
},
"trigger": "CREATE"
}
]
  1. Create a Jenkins Pipeline with the following configuration:

    1. Enable webhook trigger for a pipeline
    2. Define variables for a pipeline: Define the REPO_NAME,GITHUB_ORG_NAME and RUN_ID variables. Define Vars
    3. Token Setup: Define the token to match JOB_TOKEN as configured in your Port Action.
  2. Create a Jenkins Pipeline with the following content:

Jenkins Pipeline Script
import groovy.json.JsonSlurper

pipeline {
agent any

environment {
COOKIECUTTER_TEMPLATE = 'https://github.com/lacion/cookiecutter-golang'
REPO_NAME = "${REPO_NAME}"
GITHUB_ORG_NAME = "${GITHUB_ORG_NAME}"
SCAFFOLD_DIR = "scaffold_${REPO_NAME}"
PORT_ACCESS_TOKEN = ""
PORT_BLUEPRINT_ID = "microservice"
PORT_RUN_ID = "${RUN_ID}"
}

stages {
stage('Get access token') {
steps {
script {
withCredentials([
string(credentialsId: 'PORT_CLIENT_ID', variable: 'PORT_CLIENT_ID'),
string(credentialsId: 'PORT_CLIENT_SECRET', variable: 'PORT_CLIENT_SECRET')
]) {
// Execute the curl command and capture the output
def result = sh(returnStdout: true, script: """
accessTokenPayload=\$(curl -X POST \
-H "Content-Type: application/json" \
-d '{"clientId": "${PORT_CLIENT_ID}", "clientSecret": "${PORT_CLIENT_SECRET}"}' \
-s "https://api.getport.io/v1/auth/access_token")
echo \$accessTokenPayload
""")

// Parse the JSON response using JsonSlurper
def jsonSlurper = new JsonSlurper()
def payloadJson = jsonSlurper.parseText(result.trim())

// Access the desired data from the payload
PORT_ACCESS_TOKEN = payloadJson.accessToken
}

}
}
} // end of stage Get access token

stage('Create Github Repository') {
steps {
script {
def logs_report_response = sh(script: """
curl -X POST \
-H "Content-Type: application/json" \
-H "Authorization: Bearer ${PORT_ACCESS_TOKEN}" \
-d '{"message": "Creating GitHub repository: ${REPO_NAME} in GitHub org: ${GITHUB_ORG_NAME}..."}' \
"https://api.getport.io/v1/actions/runs/${PORT_RUN_ID}/logs"
""", returnStdout: true)

println(logs_report_response)
}
script {
withCredentials([string(credentialsId: 'GITHUB_TOKEN', variable: 'GITHUB_TOKEN')]) {
sh """

curl -i -H 'Authorization: token ${GITHUB_TOKEN}' \\
-d '{
"name": "${REPO_NAME}", "private": true
}' \\
https://api.github.com/orgs/${GITHUB_ORG_NAME}/repos
"""
}
}
}
} // end of stage Create Github Repository

stage('Scaffold Cookiecutter Template') {
steps {
script {
def logs_report_response = sh(script: """
curl -X POST \
-H "Content-Type: application/json" \
-H "Authorization: Bearer ${PORT_ACCESS_TOKEN}" \
-d '{"message": "Scaffolding ${REPO_NAME}..."}' \
"https://api.getport.io/v1/actions/runs/${PORT_RUN_ID}/logs"
""", returnStdout: true)

println(logs_report_response)
}
script {
withCredentials([
string(credentialsId: 'GITHUB_USERNAME', variable: 'GITHUB_USERNAME'),
string(credentialsId: 'GITHUB_TOKEN', variable: 'GITHUB_TOKEN')
]) {
def yamlContent = """
default_context:
full_name: "Full Name"
github_username: "githubuser"
app_name: "${REPO_NAME}"
project_short_description": "A Golang project."
docker_hub_username: "dockerhubuser"
docker_image: "dockerhubuser/alpine-base-image:latest"
docker_build_image: "dockerhubuser/alpine-golang-buildimage"
"""
// Write the YAML content to a file
writeFile(file: 'cookiecutter.yaml', text: yamlContent)

sh("""
rm -rf ${SCAFFOLD_DIR} ${REPO_NAME}
git clone https://${GITHUB_USERNAME}:${GITHUB_TOKEN}@github.com/${GITHUB_ORG_NAME}/${REPO_NAME}

cookiecutter ${COOKIECUTTER_TEMPLATE} --output-dir ${SCAFFOLD_DIR} --no-input --config-file cookiecutter.yaml -f

rm -rf ${SCAFFOLD_DIR}/${REPO_NAME}/.git*
cp -r ${SCAFFOLD_DIR}/${REPO_NAME}/* "${REPO_NAME}/"

cd ${REPO_NAME}
git config user.name "Jenkins Pipeline Bot"
git config user.email "jenkins-pipeline[bot]@users.noreply.jenkins.com"
git add .
git commit -m "Scaffolded project ${REPO_NAME}"
git push -u origin main
cd ..

rm -rf ${SCAFFOLD_DIR} ${REPO_NAME}
""")
}

}
}
} // end of stage Clone Cookiecutter Template

stage('CREATE Microservice entity') {
steps {
script {
def logs_report_response = sh(script: """
curl -X POST \
-H "Content-Type: application/json" \
-H "Authorization: Bearer ${PORT_ACCESS_TOKEN}" \
-d '{"message": "Creating ${REPO_NAME} Microservice Port entity..."}' \
"https://api.getport.io/v1/actions/runs/${PORT_RUN_ID}/logs"
""", returnStdout: true)

println(logs_report_response)
}
script {
def status_report_response = sh(script: """
curl --location --request POST "https://api.getport.io/v1/blueprints/$PORT_BLUEPRINT_ID/entities?upsert=true&run_id=$PORT_RUN_ID&create_missing_related_entities=true" \
--header "Authorization: Bearer $PORT_ACCESS_TOKEN" \
--header "Content-Type: application/json" \
--data-raw '{
"identifier": "${REPO_NAME}",
"title": "${REPO_NAME}",
"properties": {"description":"${REPO_NAME} golang project","url":"https://github.com/${GITHUB_ORG_NAME}/${REPO_NAME}"},
"relations": {}
}'

""", returnStdout: true)

println(status_report_response)
}
}
} // end of stage CREATE Microservice entity

stage('Update Port Run Status') {
steps {
script {
def status_report_response = sh(script: """
curl -X PATCH \
-H "Content-Type: application/json" \
-H "Authorization: Bearer ${PORT_ACCESS_TOKEN}" \
-d '{"status":"SUCCESS", "message": {"run_status": "Scaffold Jenkins Pipeline completed successfully!"}}' \
"https://api.getport.io/v1/actions/runs/${PORT_RUN_ID}"
""", returnStdout: true)

println(status_report_response)
}
}
} // end of stage Update Port Run Status
}

post {

failure {
// Update Port Run failed.
script {
def status_report_response = sh(script: """
curl -X PATCH \
-H "Content-Type: application/json" \
-H "Authorization: Bearer ${PORT_ACCESS_TOKEN}" \
-d '{"status":"FAILURE", "message": {"run_status": "Failed to Scaffold ${REPO_NAME}"}}' \
"https://api.getport.io/v1/actions/runs/${PORT_RUN_ID}"
""", returnStdout: true)

println(status_report_response)
}
}

// Clean after build
always {
cleanWs(cleanWhenNotBuilt: false,
deleteDirs: true,
disableDeferredWipeout: false,
notFailBuild: true,
patterns: [[pattern: '.gitignore', type: 'INCLUDE'],
[pattern: '.propsfile', type: 'EXCLUDE']])
}
}
}
  1. Trigger the action from the Self-service tab of your Port application.