Tuesday, 6 October 2015

IBM Bluemix - Specify only Liberty buildpack features you require

I am more often then not using spring boot applications on IBM Bluemix and most of what I need is packaged with the application from JPA or JDBC, drivers, Rest etc. Of course with IBM Bluemix we can specify which build pack we wish to use but by default for java applications LIberty is used.

When a stand-alone application is deployed, a default Liberty configuration is provided for the application. The default configuration enables the following Liberty features:

  • beanValidation-1.1
  • cdi-1.2
  • ejbLite-3.2
  • el-3.0
  • jaxrs-2.0
  • jdbc-4.1
  • jndi-1.0
  • jpa-2.1
  • jsf-2.2
  • jsonp-1.0
  • jsp-2.3
  • managedBeans-1.0
  • servlet-3.1
  • websocket-1.1
  • icap:managementConnector-1.0
  • appstate-1.0
Here is how I strip out some of what isn't required in my Liberty runtime container to a bare minimal of what I need.

manifest.yml

applications:
 - name: pas-speedtest
   memory: 512M
   instances: 1
   path: ./demo-0.0.1-SNAPSHOT.jar
   host: pas-speedtest
   domain: mybluemix.net
   env:
     JBP_CONFIG_LIBERTY: "app_archive: {features: [jsp-2.3, websocket-1.1, servlet-3.1]}"


 More Information

https://www.ng.bluemix.net/docs/starters/liberty/index.html#optionsforpushinglibertyapplications


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