{"id":6191,"date":"2020-03-02T15:54:36","date_gmt":"2020-03-02T14:54:36","guid":{"rendered":"https:\/\/blog.via-internet.de\/?p=6191"},"modified":"2020-03-02T15:54:36","modified_gmt":"2020-03-02T14:54:36","slug":"jenkins-build-and-deploy-a-groovy-app","status":"publish","type":"post","link":"https:\/\/via-internet.de\/blog\/2020\/03\/02\/jenkins-build-and-deploy-a-groovy-app\/","title":{"rendered":"Jenkins | Build and Deploy a Groovy App"},"content":{"rendered":"\n

Introduction<\/h2>\n\n\n\n

Using Jenkins as an automation server for your development, you can automate such repeating tasks as testing and deploying your app.<\/p>\n\n\n\n

Starting with a sample Groovy App (a simple calculator) with tests, you will learn how to integrate your app in Jenkins and build a pipeline, so that Jenkins runs the desired tasks every time, you change the code.<\/p>\n\n\n\n

Prepare the sources<\/h2>\n\n\n\n

Clone the sample repository from Github<\/a>.<\/h4>\n\n\n\n

You should clone the demo repository into you demo account, because you may change some file during this post., and you will not get write permissions for the demo repository.<\/p>\n\n\n\n

Also, clone the repository to your local machine to see what our demo app looks like.<\/p>\n\n\n\n

$ git clone https:\/\/github.com\/jenkins-toolbox\/SampleApp_GroovyCalculator\nCloning into 'SampleApp_GroovyCalculator'...\nremote: Enumerating objects: 194, done.\nremote: Counting objects: 100\nremote: Compressing objects: 100\nremote: Total 194 (delta 44), reused 137 (delta 23), pack-reused 0\nReceiving objects: 100\nResolving deltas: 100\n\n\n\n
Go into the new create folder<\/h4>\n\n\n\n
$ cd SampleApp_GroovyCalculator\/\n$ ls\nJenkinsfile      README.md        bin              build.gradle     gradlew          src\nMakefile         SampleCalculator build            gradle           settings.gradle<\/pre>\n\n\n\n
The first task, Jenkins will do in our pipeline: build your app<\/h4>\n\n\n\n
$ .\/gradlew build<\/pre>\n\n\n\n
Because it’s the first time you start gradlew<\/code>, the required software will be downloaded:<\/p>\n\n\n\n
First: the current Gradle Version (Gradle is the Build Tool used by Groovy Projects)<\/p>\n\n\n\n
Downloading https:\/\/services.gradle.org\/distributions\/gradle-6.2.1-bin.zip\n\u2026\u2026\u202610\n\nWelcome to Gradle 6.2.1!\n\nHere are the highlights of this release:\n - Dependency checksum and signature verification\n - Shareable read-only dependency cache\n - Documentation links in deprecation messages\n\nFor more details see https:\/\/docs.gradle.org\/6.2.1\/release-notes.html\n\nStarting a Gradle Daemon, 2 stopped Daemons could not be reused, use --status for details<\/pre>\n\n\n\n
After this, your app will be tested<\/h4>\n\n\n\n
> Task :test\n\nCalculator02Spec > two plus two should equal four PASSED\n\nCalculator01Spec > add: 2 + 3 PASSED\n\nCalculator01Spec > subtract: 4 - 3 PASSED\n\nCalculator01Spec > multiply: 2 * 3 PASSED\n\nBUILD SUCCESSFUL in 34s\n5 actionable tasks: 5 executed<\/pre>\n\n\n\n
Perform the build again<\/h4>\n\n\n\n
No download is required. The build is much quicker.<\/p>\n\n\n\n
$ .\/gradlew build\n\nBUILD SUCCESSFUL in 1s\n5 actionable tasks: 5 up-to-date<\/pre>\n\n\n\n
Now, test our app:<\/h4>\n\n\n\n
.\/gradlew clean test\n\n> Task :test\n\nCalculator02Spec > two plus two should equal four PASSED\n\nCalculator01Spec > add: 2 + 3 PASSED\n\nCalculator01Spec > subtract: 4 - 3 PASSED\n\nCalculator01Spec > multiply: 2 * 3 PASSED\n\nBUILD SUCCESSFUL in 4s\n5 actionable tasks: 5 executed<\/pre>\n\n\n\n
Create a Jenkins Pipeline<\/h2>\n\n\n\n
Start by clicking on the BlueOcean menu item.<\/p>\n\n\n\n
\n
\n
\"\"<\/figure>\n<\/div>\n\n\n\n
\n
Hint:<\/strong> Blue Ocean is not installed with the default Jenkins installation.<\/p>\n\n\n\n
You have to install the corresponding Plugins.<\/p>\n\n\n\n
Select Manage Jenkins<\/code> \u2192 Manage Plugins<\/code>.<\/p>\n\n\n\n
Then, select the tab Available<\/code> and enter in the Filter<\/code> box: Blue Ocean.<\/p>\n\n\n\n
Install all plugins, that will be listed.<\/p>\n<\/div>\n<\/div>\n\n\n\n
Next: Click on the New Pipeline to create your first Pipeline<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Use the Item GitHub to specify, where our code is stored<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Next, use your GitHub account.<\/p>\n\n\n\n
Be sure, that you cloned the demo repository<\/a><\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Next, we select the demo repository SampleApp_GroovyCalculator<\/a><\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Click on Create Pipeline and after a few seconds, the pipeline is created.<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Immediately after creating the pipeline, Jenkins is starting the pipeline and all steps included.<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
If everything went well, you see a positive status<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Now, click on the pipeline (e.g. the text master<\/code> or the status icon) and you will see the pipeline with all steps and their corresponding state.<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
If you, want to edit the pipeline, for example to add another step, like on the pencil in the header.<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Click on Cancel<\/code> to leave the Pipeline editor.<\/p>\n\n\n\n
Hint<\/strong>: If you click on Save<\/code>, all changes are pushed back to the repository and Jenkins starts the Pipeline again.<\/p>\n\n\n\n
Run the Pipeline<\/h2>\n\n\n\n
If you want to run your pipeline, click on the rerun icon for your pipeline<\/p>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"
Introduction Using Jenkins as an automation server for your development, you can automate such repeating tasks as testing and deploying your app. Starting with a sample Groovy App (a simple calculator) with tests, you will learn how to integrate your app in Jenkins and build a pipeline, so that Jenkins runs the desired tasks every […]<\/p>\n","protected":false},"author":1,"featured_media":6220,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[13,30,40],"tags":[],"class_list":["post-6191","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ci-cd","category-groovy","category-jenkins"],"jetpack_featured_media_url":"https:\/\/via-internet.de\/blog\/wp-content\/uploads\/2020\/03\/jenkins-with-groovy-and-spock-1.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/posts\/6191","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/comments?post=6191"}],"version-history":[{"count":0,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/posts\/6191\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/media\/6220"}],"wp:attachment":[{"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/media?parent=6191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/categories?post=6191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/tags?post=6191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}