Deploying a grails vue app to heroku using gradle

Continuing from my previous post on combining the server and client projects of a grails vue profile app into a single executable jar file, you can make use of the heroku-gradle plugin to deploy the resulting jar to Heroku. The tutorial here can help get started with deploying gradle projects to Heroku. Prior to using the plugin you would need to take the following steps to deploy.

1. Define your Procfile with the command to execute the web app``` web: java -Dserver.port=$PORT $JAVA_OPTS -jar build/server-0.1.jar

2. Create a stage task (default Heroku build task) and make it depend on the assembleServerAndClient so that the build to create the executable jar is triggered.``` task stage { dependsOn assembleServerAndClient }

3. Execute git push heroku master to deploy the app.

With the plugin you define following config in build.gradle:heroku { appName = "floating-shore-99282" jdkVersion = "1.8" buildpacks = \["heroku/jvm"\] processTypes(web: "java -Dserver.port=\\$PORT \\$JAVA\_OPTS -jar build/server-0.1.jar") }The processTypes definition effectively replaces the Procfile and the stage task can be replaced by this line in your build.gradle.deployHeroku.dependsOn(assembleServerAndClient)Making the deployHeroku task depend on assembleServerAndClient task ensures the jar is created. All that is left to do now is run /.gradlew deployHeroku to deploy the app. You can refer to this github repo for an example project.