From The Blog

Alexa Project Name Generator on OpenWhisk

I'm having lots of fun with my Amazon echo and echo dots, creating skills for them. Initially I used Amazon's lambda platform since that's a very easy way to get started - but I'm an advocate for IBM and was looking for an excuse to play with OpenWhisk (an open source serverless offering that Bluemix has a hosted version of) anyway so this was a great opportunity!

Configuring Skills

There are a bunch of good resources around for setting up skills, picking the name, configuring the "invocation" which is what to say to make the code happen, and so on. I'll skip this section and instead just share a couple of tutorials that I rely on a lot:

Once your skill is configured, it's time to write the code (note: UK users need to pick English (UK) and not English (US) as otherwise your skill will mysteriously fail in your home region. Guess how I learned that??) Continue reading

Working With Sorted Sets in Redis

I work with a bunch of datastores and I probably shouldn't have favourites - but if I did, Redis would be one of them! I used the sorted sets in something I was building and remembered how much I liked the feature so here's a quick primer on what it is and when it can be handy. Continue reading

One-Line Command For Newest OpenWhisk Logs

One of my current project uses OpenWhisk, which is an open source serverless technology stack. IBM has it on their Bluemix platform, and since I work there, I get to play with it as much as I like! One thing that did seem clunky is that it takes more than one step to get the logs of the most recent function run via commandline - first you list the activations, then you request the logs of the activation you're interested in. Of course, when you're developing, that's usually the most recent one so here's my shortcut for that:

wsk activation list -l1 | tail -n1 | cut -d ' ' -f1 | xargs wsk activation logs

From left to right, sections separated by the pipe | character, this is what happens:

  • get a list of activations, limited to just one activation (it sorts the newest one first by default)
  • grab only the last line of that output (there's some extra titles and stuff in there)
  • use the `cut` command with the space character as a field delimiter, and use only the first field (this gets the ID of the activation)
  • get the logs of that activation

Of course it's wrapped up in a script so I just run that from the commandline and check where I went wrong this time ...

Talks, Articles, Podcasts, and More


Deploy your PHP App to Bluemix

Medium, December 2016

The Setup

Hey Stac, December 2016

Creating Compelling Content

DevRelCon, December 2016