Changes at IsItJRuby.com

Carl Mercier — Tue, 15 Dec 2009 04:56:45 +0000

I’ve been ridiculously busy lately. Way too busy. Too busy to sleep, to hit the gym, and definitely maintain yet another website. Unfortunately, IsItJRuby.com didn’t get the love it deserved so I started hunting for someone to take my place.

Alex Coles (@myabc) volunteered and is now the new maintainer. He already shared with me a couple good ideas for the site, which he’ll hopefully implement soon.

Thank you, Alex, and congrats!

Running Merb on JRuby 1.2 and Glassfish 2.1

Carl Mercier — Mon, 30 Mar 2009 19:50:31 +0000

So I’ve been trying to get Merb running on JRuby a good part of last night. I don’t know jack about Java, so this has been a little bit more challenging than it should have been. Most (if not all) of the tutorials I found were old and obsolete, so I decided to throw out my very own.

I need to give credit to this page, without which I’d still be fighting with this whole thing.

This tutorial uses JRuby 1.2, Glassfish 2.1, Merb 1.0.10 and Ubuntu 8.04 LTS. To make my life easy, I simply fired an EC2 instance based on ami-71fd1a18. I recommend you do the same. However, it should work from just any vanilla Ubuntu 8.04.

Some important comments are in the script below, make sure to read them. Enjoy!

# Setup the scene 
apt-get update 
apt-get upgrade 
# this is the Corporate World, folks, you’ll need to accept some license agreement in the next step 
apt-get install -y vim-full build-essential git-core sun-java6-jdk ant 
apt-get install -y mysql-server mysql-client
# Install JRuby 
cd /tmp 
wget http://dist.codehaus.org/jruby/1.2.0/jruby-bin-1.2.0.tar.gz 
tar xzvf jruby-bin* 
mv jruby-1.2.0 /opt/jruby 
echo “export PATH=”/opt/jruby/bin:$PATH”" >> ~/.bashrc 
export PATH=”/opt/jruby/bin:$PATH”
# By now, ‘jirb’ should start IRB on JRuby!
# Let’s now install some gems 
jruby -S gem install erubis rake json_pure rspec rack mime-types rubigen –no-rdoc –no-ri 
jruby -S gem install hpricot –no-rdoc –no-ri –version ‘~>0.6.1′ # version 7 doesn’t work with JRuby as of now 
jruby -S gem install merb-core merb-more –no-rdoc –no-ri
# Test to see if Merb is installed: 
jruby -S merb help
# Create an Hello World app 
cd ~ 
jruby -S merb-gen core hello_world 
cd hello_world 
jruby -S merb-gen controller hello 
echo “ 
<h1>This is a Merb app running on JRuby. w00t!</h1>
” > app/views/hello/index.html.erb 
# Freeze Merb into your app 
jruby -S gem install merb-core merb-more –no-rdoc –no-ri -i gems
# Install Glassfish 
cd /tmp 
wget http://java.net/download/javaee5/v2.1_branch/promoted/Linux/glassfish-installer-v2.1-b60e-linux.jar 
# and yet more licensing! 
java -Xmx256m -jar glassfish-installer-v2.1-b60e-linux.jar 
mv glassfish /opt/ 
cd /opt/glassfish 
ant -f setup.xml
# Start Glassfish server, it might take some time. 
./bin/asadmin start-domain domain1
# Warbler and friends 
jruby -S gem install rails warbler activerecord-jdbc-adapter –no-rdoc –no-ri 
cd ~/hello_world 
jruby -S warble config
# Make sure frozen gems are included in your .war file. 
# edit config/warble.rb and add “gems” to the config.dirs line
# create some missing directories, otherwise, warble will complain. 
mkdir -p lib log vendor 
# create a .war file 
jruby -S warble war 
# copy it to Glassfish. 
cp hello_world.war /opt/glassfish/domains/domain1/autodeploy/
# Glassfish finds your app and starts it automatically. Give it a few seconds. 
# Then, go to http://{server-ip}:4848 
# User: admin Pass: adminadmin Sounds like a good idea to change this for production!!!!! 
# Click “Web Applications”, then “hello_world”. Change “Context Root” to “/” and Save. Saving was slow for me.
# 
# That’s it!!! 
# 
# Now go see your l33t web 2.0 app in action: 
# Go to http://{server-ip}:8080/ 
# and http://{server-ip}:8080/hello

Carl Mercier's blog » jruby

Changes at IsItJRuby.com

Running Merb on JRuby 1.2 and Glassfish 2.1