Showing posts from 2015

Whirlwind Tour of JavaOne and Oracle Openworld 2015

JavaOne 2015 Roundups and Summary Articles

I recently had the wonderful opportunity of attending JavaOne and Oracle Openworld 2015 and have extensively blogged about the social and technical aspects of the conference!
Get a taste of the many events and exhibits on display and an insider's view on the conference.  I will also be presenting the most important takeaways regarding the future direction of Java including an in-depth discussion of changes coming in Java 9 and how to best prepare for those upcoming changes.
If you are local to the Richmond,VA then check out our meetup on the topic!

JavaOne 2015 Day 1 Roundup
#JavaOne Day 1 roundup: - Keynote, Welcome event, #jdk9#java 10/11 previews— Ippon USA (@IpponUSA) October 26, 2015
JavaOne 2015 Day 2 Roundup
#JavaOne Day 2 roundup: Focus on #JDK9 and project #jigsaw -…

Running a new jHipster Application using Compass and the main CSS file is not loading

How to fix a Newly Created jHipster Application not Loading the Main CSS File 
If you see an error similar to the following upon first startup of a jHipster application you have just created:

Failed to load resource: the server responded with a status of 404 (Not Found)

Then you will need to run the grunt task, grunt compass.

Install Compass You will need to first install Compass, an open-source CSS Authoring Framework before you can run the Grunt task to create the main.css file which is missing.
Using node:
npm install compass
Reference the following link for more info about installing compass using npm
Run Grunt Task
After you install Compass, you will then need to run the grunt task.  In in IntelliJ you can click the grunt task runner at the bottom of your screen or go to Tools -> Open Grunt Console.

Restart your Application
Try refreshing and restarting your application and the styling should now…

Spring Scheduler to Create Background Process to make Async Calls to Update Cache in Spring Boot

Using Spring Scheduler to Create a Scheduled Task that hits your Endpoints to Update a Spring Cache for a Spring Boot Application

I used Spring Scheduler to execute a process on a regular basis to make separate async calls to several endpoints to keep the Spring cache updated and also as a health monitor.

This serves two purposes for us, we monitor all the endpoints to ensure correct data is coming back and it keeps the caches fresh and up to date even when there hasn't been traffic on that endpoint recently.

Guides on how to setup Spring caching:
Guide on Spring Scheduler:

View all the code used in this article on Github here:

The Spring Framework is maintained by Pivotal
+Spring by Pivotal
Spring Scheduler
You will want to add 3 annotations to your Application.j…

Add Guava Cache to Spring Boot to Cache Method Calls

Add Google Guava Cache to Spring Boot to Cache the Results of Method Calls using Java Config and Spring Annotations

If you have a time-intensive method that is slowing down your application and the results of that method don't change very often, it is a good candidate for caching.  This guide will show you how to implement caching in your Spring Boot application using Google Guava cache.  
Guava cache is a simple, lightweight in-memory cache that has more configuration options then the default In-Memory Spring Cache.  Guava cache is not for clustered systems, for that you will want to use Hazelcast
So if you just need a simple cache but you want more config options such as cache expiration time, then this approach may fit your use case.  Alternatively, you could use EhCache.
Full source code references can be found at the bottom of the article.

More info on Guava Cache:

More info on Spring Cache:

Spring Boot Internationalization with Default Locale for Message Strings

How to add Spring Boot Internationalization with Default Locale for Storing Message Strings such as Validation Messages in a file 
 This article will show you how to use a properties file to define static text in your application such as for validation message.

All the code is appended at the bottom of the article. 

You can also view all the code here: Link to Github Gist here
Add Default locale and Message Source beans to your Application class 

 Add these classes to set your default locale and configure the location of your message properties file

Add a Service and Interface to retrieve message text 
 This service will pull the default locale from the session and then get the message text from your properties file using the messageSource.

In your controller, use the Message service to get the message text 
 You will inject the message service in the controller and then pass in the id to get the value from the props file

Create the file in t…

Change Port on a Spring Boot Application when using intelliJ

Change Port on a Spring Boot Application when using intelliJ 

Two ways to change the port that the embedded Tomcat is using in a Spring Boot Application.
The first way is to modify the application properties in the resources folder:

There are a couple issues with this approach.  You might only want this port change in your local environment and if you check it in by accident you might break things.

Alternatively, you can use a command line parameter.
Go to Run -> Edit Configurations -> VM options
Then enter in the following argument:

Then click apply and OK and attempt to run the application again.

Convert Multiple Tasks to Sub-Tasks in JIRA similar to Bulk Update using Script Runner

How to Convert A Large Number of JIRA Tasks into Sub-Tasks using the Adaptavist Script Runner Plugin with JIRA

In JIRA, there is no way to convert Tasks into Sub-Tasks using the built-in Bulk Update functionality.  The lack of the feature is described in many JIRA tickets and Confluence posts on the official Atlassian site such as the two listed below:
There are many potential workarounds to this such as using selenium scripting to automate the conversion process using browser automation.  The best solution I have found is to use scripting within JIRA.

Backup your System

Before you attempt this, you should backup your JIRA instance because you potentially can make changes to tasks you did not intend.
Go to System settings and scroll down to the IMPORT & EXPORT section:

Install JIRA Adaptavist Scriptrunner

Download AdaptavistScriptrunner

Get Ad…

Tired Engineers: Welcome to the Future of Coffee Automation

Welcome to the Future of Coffee Automation
Introducing Brew().  A Coffee Automation system to initiate coffee brewing whenever your code quality starts to slip.
Brew detects when you start writing crappy code, brews you some coffee, and empowers you to PUT DOWN THE KEYBOARD AND PICK UP THE MUG!

Brew() will save your life and the lives of your team.  Engineers depend on it.

So what are you waiting for!?!?!
Learn more about brew here:  Brew()

Add Stormpath User Mgmt Dependencies to Grails

Add Stormpath User Mgmt Dependencies to Grails
How to add dependencies for Stormpath to your grails application.

In your BuildConfig.groovy in the dependencies section you need to add 3 dependencies.

These artifacts are up to date as of 2/2/2015 so you may need to look up the newest version here:

Here are the dependencies you need to add.

BuildConfig.groovy dependencies { //Stormpath user mgmt compile 'com.stormpath.sdk:stormpath-sdk-api:1.0.RC3.1' runtime 'com.stormpath.sdk:stormpath-sdk-httpclient:1.0.RC3.1' runtime 'com.stormpath.sdk:stormpath-sdk-oauth:1.0.RC3.1' }

Here are the original Maven imports in XML format for reference: