zerosum dirt(nap)

evolution through a series of accidents

zerosum dirt(nap)

Stomp in the Android Market

February 26, 2011

My pal and “prolific prototyper” Nick Tommarello just released his latest project into the wild… Stomp.io is a social adventure and travel guide that aims to make it easier for you to find fun things to do while at home or on the go. Stomp debuted at the Launch conference run by former TC50 founder Jason Calacanis, and has gotten some great media coverage over the past couple days. Like pitches? You can watch Nick’s presentation here.

If you’re in SF, NYC, or Boston, make sure to give it a try. Hopefully it won’t take too long to spread to other areas too. Some of the challenges are… kind of nuts. Others are a bit more laid back. And there’s a lot more in-between so I’m pretty sure you’ll find something you like there. You can install the mobile version of the app on both the iPhone and Android

Oh and if you’re having problems with the Android version of the app you can yell at me. Working with Nick on Stomp was a great excuse for me to level up on Android development. There’s no better way to come up to speed on a new platform than to dive in and deliver a working application. That said, the app is still young and a bit sparse, and I’m sure there are still a few bugs hiding in the woods; Crash reports and feature requests are very welcome :). Thanks in advance!

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Ohai Tumblr

January 02, 2011

At one point in time (affectionately referred to as the “long long ago”) I used to post all kinds of stuff here, both technical / programmery and non-technical / non-programmery. Once I started using Twitter on a regular basis, I stopped posting here as much, and when I did, the content was pretty much just technical stuff. Which is a big win if you’re a fan of the signal to noise ratio.

“But,” you say, “I like more noise with less signal!”

Me too! And thus it was that I set up a Tumblr account awhile back, mostly for posting stupid pictures. But I figured, what with it being 2011 and all, that I’d maybe I’d also start writing a little bit more there. Or maybe not. We’ll see.

If you’re interested, follow me on Tumblr.

Oh, and Happy New Year!

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Fooling Around with Mirah and Android

December 20, 2010

Have you spent any time playing around with Mirah yet? You should. It’s developing into a pretty awesome language. Or maybe just a fantastic Ruby-like syntax for Java, depending on how you look at it. Mirah as a language (err, compiler) is still a work in progress, but it’s very usable as-is and fun to play around with.

If nothing else, it certainly makes writing trivial Android applications more enjoyable. Want to write one yourself? Check out Protoform, a little Mirah Android app generator that I tossed together a few weeks ago. Install it via Rubygems and get your droid on:

gem install protoform
protoform -S ~/android/sdk -T "Hello Android" -P org.zerosum.android HelloWorld

You’ll want to have JRuby and Mirah installed of course. Get JRuby with RVM and then gem install Mirah.

If you want to do Android work in straight Ruby instead, you can take a look
at Ruboto. However, Ruboto runs on Android
via JRuby, which means the runtime needs to be bundled in to the APK, leading
to large file sizes and slow execution. Mirah, on the other hand, compiles
straight to Java bytecode with no middleman and makes direct use of the Google
Android APIs. Ruboto is under heavy development and coming along nicely though, and the more Ruby-like API wrappers are a welcome alternative.

Both of these projects have the potential to be pretty important stuff. As
does anything else that makes mobile client development less painful
(Appcelerator, Phonegap, Rhomobile, etc).

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A Pure Git Deploy Workflow (with Jekyll and Gitolite)

November 01, 2010

Manually deploying static site updates is so 2003. And Capistrano is great, but it’s an extra step you don’t always need (and somewhat overcomplicated). If you’re using Jekyll to power your site and already have your data in Git, it’s pretty easy to set up a pure Git deployment workflow. Even if you’re not using Heroku ;-).

By using either Gitosis or (better yet) Gitolite, you can be autodeploying like a boss in just a few minutes. And, because Gitolite allows you to manage repository access across ad-hoc groups, you can easily allow other users to push to your remotes and update the appropriate sites without them needing shell access on your server. And share those users across multiple projects, and so on and so on.

Here’s how I set up the deploy recipe that I use for updating this blog and a couple other static sites that I’m hosting on the same box.

Gitolite Installation

First, install Gitolite on the host you want to deploy to. Sitaram’s installation instructions are really easy to follow, but I’ll summarize here (I used the root method, which I suspect is what most readers would want to use too):

git clone git://github.com/sitaramc/gitolite gitolite-source
cd gitolite-source
git checkout v1.5.6 (or whatever tagged version you want)
mkdir -p /usr/local/share/gitolite/conf /usr/local/share/gitolite/hooks
src/gl-system-install /usr/local/bin /usr/local/share/gitolite/conf /usr/local/share/gitolite/hooks

You’ll need to add a git user, who will own the repositories on the system. Create one now, and finish the Gitolite installation process:

adduser git
su - git
gl-setup /path/to/your/public-key/id_rsa.pub

Gitolite Administration

Make sure that you gave gl-setup the correct public key from your local (client) system. Now, on your client, you should now be able to check out the gitolite admin repository, through which you can manage users, groups, and repository access.

git clone git@my-server:gitolite-admin

Next, edit gitolite-admin/conf/gitolite.conf. Gitolite comes with a couple pre-defined group definitions (including one for the admin repository; don’t screw that one up). Adding a user permissions for a new repository goes like this:

repo  blog
      RW+ = kyle stan

Where blog is the name of the repository you want to create, and kyle and stan are two users who will need to be able to read and write to that repository. We have no way to identify Stan and Kyle yet, but that’s the next step. We’ll add their public keys to the gitolite-admin/keydir directory. Make sure to name them kyle.pub and stan.pub.

Add the new files to the git repo (git add .) and commit everything. Push it to the remote with git push origin master. This should push the gitolite admin changes back to your remote server and update the internal configuration, allowing Stan and Kyle to work on the blog project.

Managing a Static Site

For simplicity’s sake, let’s say that you’re Stan (Stan’s public key is your public key). To create the new repository and register it with Gitolite, you should now be able to do the following:

mkdir blog
cd blog
git init
touch index.html
git add .
git commit -a
git remote add origin git@my-server:blog
git push origin master

Instead of just creating an empty index file, make it a simple html file, or drop in a basic Jekyll site. Or, instead of creating a brand new repository, just add a remote (call it production perhaps?) to an existing Jekyll repository that you’ve been working on. In any case, when you push those commits up, Gitolite should check that your public key is authorized to perform that operation, and (assuming that it is) create the new bare repository for you automatically. Because it’s cool like that.

If you have a problem with this step, check that (a) your public key is indeed mapped to a username that is authorized to RW that repository, and (b) that the name in your gitolite.conf matches the public key filename.

If that all appears to be working, your next step will be to create a virtual host entry in your Apache config on the server (or your web server of choice). Here’s a basic Apache vhost:

<VirtualHost *:80>
  ServerName blog.superawesomedomainname.com
  ServerAdmin info@superawesomedomainname.com
  DocumentRoot /var/www/blog
  
  ErrorLog /var/log/apache2/blog-error.log
  CustomLog /var/log/apache2/blog-access.log combined
</VirtualHost>

And of course, create the docroot destination and make sure the git user owns it and can write to it. Then you can enable the config and restart Apache (or nginx or whatever).

Auto-Update on Deploy

I’m going to assume that we’re working with Jekyll here. And you should be, because it’s awesome. But if you are using some other static site generator, you can customize it pretty easily. The basic idea is that you want a post-receive hook to fire whenever the server receives a new push, and you want to regenerate the site data and redeploy it for everyone to see. This makes creating a new blog post really easy, for example.

Navigate to /home/git/repositories/blog.git/hooks and edit the post-receive file. You may also need to chmod ug+x it so it’ll execute properly. Here’s what goes inside:

GIT_REPO=$HOME/repositories/blog.git
TMP_GIT_CLONE=$HOME/tmp/blog
PUBLIC_WWW=/var/www/blog

git clone $GIT_REPO $TMP_GIT_CLONE
cd $TMP_GIT_CLONE && jekyll --no-auto $TMP_GIT_CLONE $PUBLIC_WWW
cd ~ && rm -rf $TMP_GIT_CLONE

find $PUBLIC_WWW -type f -print0 | xargs -0 chmod 666
find $PUBLIC_WWW -type d -print0 | xargs -0 chmod 777

exit

Save that, and then commit a sample change from your client and push it to the remote. The server should fire the post-receive hook automatically when the push has finished, and regenerate the site, dumping the changes into your docroot directory for the world to see. In fact, you should even see the Jekyll generation output in the git push command output, which makes it extra easy to troubleshoot in case you’re having a problem.

And voila, git auto-deploy goodness.

What’s best about this is that it’s easy to authorize new users to update a group site or blog, and manage those users all through their public keys and a simple config file. This config also makes it easy to spin up new static sites on the same host; just copy a couple configs and you’re good to go (or even better, investigate dynamically configured mass virtual hosting).

If you’re self-hosting your blog with some custom blog package you should really give this type of setup a look. I like it because it’s simple to manage access, incredibly quick to deploy updates, and everything is naturally stored in Git and in plaintext, so you’ve always got full revision history and never have to worry about vendor lock-in or proprietary formats. Need comments? Use Disqus. Less moving parts is almost always better. Simple is good.

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More Jekyll, Less Hyde

October 30, 2010

This blog has been running Mephisto since 2007 or thereabouts. And it seems like the Mephisto project has been dead for just about that long too (check that link if you don’t believe me). So that’s awesome. But such is life… and open source.

Dr Jekyll

Anyway, I’ve been meaning to migrate my blog over to something else for quite some time. Switching is of course a pain in the butt so I’d been puting it off, but the decommissioning of the server host this blog used to run on was finally the shove that I needed. After evaluating a few blog engine and hosted service options, I decided to go with Jekyll . Why? Because it’s simple, static, and seems to be pretty fad-proof at this point. Also, it’s Halloween. So it’s thematic. I considered moving stuff to Tumblr or Posterous, but the import process proved to be an obstacle. And not Halloweeny at all. In the end, Jekyll was clearly the simplest and most malleable solution, and so here we are.

Moving wasn’t too too painful. I whipped up a few scripts to yank the data I needed out of Mephisto and then spent a few extra hours cleaning up some sloppiness and making sure all the permalinks still worked. I ported the NH Ruby blog and a few other small sites that were running on a Mephisto multi-site install at the same time. I really wanted a pure Git workflow for easy deployment, so I created some post-receive hooks that auto-deploy the latest changes when someone pushes to origin/production. And because a few other people needed to be able to post to the other sites, I figured I’d set up Gitolite, which makes managing access control for such things crazy easy.

The only thing that didn’t make the transition is old blog comments. I went with Disqus for the new site because I wanted to keep everything static and simple (avoiding lock-in to yet blog package that may or may not ever be updated again), and importing the Mephisto comments into Disqus was just too much of a pain to justify the time. Sorry about that.

Anyway, I’m pretty happy with the new setup. If you find anything that’s broken please let me know. Maybe if I get some free time over the next couple days I’ll document the Gitolite + Jekyll deployment config. I imagine that it’s not completely unlike a minimalist version of what the GitWrite guys had to do for their (awesome!) Rails Rumble entry this year. And yeah, I probably could have just used them too. Don’t know why I didn’t think of that earlier ;-).

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Rails Rumble 2010

October 21, 2010

This is the fourth year I’ve helped organize the Rails Rumble innovation competition and the entries this year are definitely the best I’ve seen yet. Our panel of experts have finished making their finalist selections and public voting just opened, so head on over and help us decide who gets to do a victory dance this weekend.

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Announcing RubyDoc.info

August 30, 2010

Last year we launched a little web service called rdoc.info for hosting public docs for Ruby libraries. It wasn’t a completely new idea, but there was nothing else out there at the time that was free and open source and worked on Github post-commit hooks, so I put something quick together in a day and started using it. A bunch of other people started using it too, which was great, and people started contributing patches, which was even more great (thanks in particular to Jeff Rafter and Brian Turnbull). It grew as more people and organizations like our friends at Thoughtbot started hosting their library docs on it.

Today it hosts docs for almost 3000 different Ruby projects. And today we’re killing it.

RubyDoc.info is Rdoc.info 2.0

Well, actually, it’s more like we’re replacing it. With something newer and better, of course. That newer, better thing is RubyDoc.info (source on Github), a project that originally started out as the yardoc.org doc server grew into a full-fledged rdoc.info replacement. Loren Segal (the author of YARD, easily the best Ruby documentation engine ever) and I have been working on merging the projects together for awhile now, and it’s finally cooked well enough that we’re ready to swap it over.

The new site addresses a number of outstanding issues / feature enhancements that people asked for on the old site, and it’s much more tied into the YARD ecosystem. Also, in addition to supporting GitHub post-commit hooks, it also hosts documentation for all published RubyGems. We like it, and we hope you do too.

If You’re Already Using Rdoc.info

If your docs are already up on rdoc.info, don’t worry. Your old URLs should still work, so no need to update them right away. Your post-commit hooks will still work too. If you have any problems at all, please open a ticket on the project’s Github repository and we’ll do our best to get you squared away. Thanks!

Better Docs == Better Code

Also, in case you’re not already familiar with YARD, now is a great time to learn about it and how it can help you improve documentation for your code. This new site deployment coincides with the release of the brand new YARD 0.6 and Loren’s awesome new Yardoc.org site, which has some great guides and other resources to get you up to speed fast.

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Resque Mailer v1.0.0 (with Rails 3 Support)

July 28, 2010

I just released a new version of Resque Mailer (1.0.0), my asynchronous email delivery extension for Resque gem src. If you’re already using it with Rails 2.x, there really aren’t any changes you need to be aware of. Go about your business. However, thanks largely to the efforts of Marcin Kulik, the gem now works in Rails 3.x as well. Thanks Marcin!

So why go 1.0.0? Because it’s feature complete, used by a number of people in production, and has been stable without any significant feature additions or issues for quite some time. It’s still simple as hell, and I don’t see it getting more complicated any time soon. And now that it works on both Rails 2.x and 3.x, well, that sounds like a 1.0.0 to me.

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Google Analytics Integration with OAuth

May 28, 2010

In case you’re not reading the Mogo blog, I posted a tutorial over there yesterday about how we integrate Google Analytics with Rails using OAuth and Garb . It’s not a terribly arduous process, but if you haven’t done much work with OAuth it can be confusing, and there are a couple unique Googly things about it that might otherwise trip you up.

The post includes complete code for an OAuth-backed authorizations controller too, which should help you get up and running quickly. And fwiw, it should actually be applicable to all the Google Data APIs, not just Google Analytics. Just change the request token scope.

And yeah, I really need to get back to blogging on a semi-regular basis, too.

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Rails Camp New England Redux

March 12, 2010

Already got plans for this weekend?


The second Rails Camp New England is this weekend, March 12th to the 14th, in West Greenwich Rhode Island. Hope to see some of you there! Ask me about my new startup (want an invite?) or help me fix some of the outstanding Rdoc.info bugs if you’re looking for something to do :).

The last camp in summer of 2009 was a great experience and I’ve been looking forward to a repeat. Thanks to Brian Cardarella for putting it together.

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