Tag: serverless

I love all things serverless, and Netlify Functions is a neat and convenient way to access AWS Lambda. I do also love AWS Lambda but it's so powerful and flexible that creating something like a webhook receiver can be hard going by the time you have all the permissions and API Gateway setup sorted out - for a simple webhook receiver, Netlify functions is a nice and easy way to get going. Best of all: it supports Golang but the docs are very JS-heavy so I am writing my notes here in case I need to refer back to them some day.

When working with serverless actions, often we'll still need to access some sort of service, whether it's object storage, a database, or whatever. Here's a quick overview of how this works for IBM Cloud Functions (plus some gotchas ....)

I work quite a bit with serverless tech, particularly on IBM Cloud since I work there. At the moment I'm building a microservice using web actions. When a user creates data with a POST request, I want to redirect them to the URL of the new thing they created - but for that I need to know the URL that it was accessed with. This is a relatively new feature on API Gateway so here's a quick howto for grabbing that URL in both JavaScript and PHP.

I mostly use OpenWhisk with NodeJS (which is lucky for me, it's the best supported of the languages and default for the documentation examples!) and while there are a bunch of npm modules already installed on OpenWhisk, sometimes there will be others that you also want to include. Alternatively or additionally, you might also want to deploy your package.json since this can specify the entry point if it's not index.js which is the default.

Having an Amazon Echo Dot in my office is quite fun, and I've accidentally started writing more skills and giving a few talks about building skills for the Alexa toolchain. Today I created a skill that uses multiple steps to make a conversation and thought I'd better write down what I did so I'd be able to remember!

The basic idea is that when creating the "intent", i.e. the action that you want Alexa to do, you also define "slots". The slots are the variables; if this were a command line tool, they'd be the arguments you typed. It's possible to include both intent and slots in your wording when you speak to Alexa, but equally you can just invoke the skill and have it prompt you for the rest of the information.

I love OpenWhisk but I struggled a little to get the parameters attached in a sane way for a while so I am capturing my notes here for future reference! Parameters can be attached to actions or packages; I tend to break my actions down really small and pass data into them, while preferring to set parameters on the package that the actions belong to.

Working with openwhisk, it's easy to create many isolated actions and build them up into sequences; the output of one action is passed to the next action in the sequence. In my case, I wanted one action to spawn potentially many other actions. I had to look up how to do it and here it is so I can look it up more quickly next time!

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 …

I mentioned in my post about creating a new skill for Alexa that I found the workflow quite clunky. Having tried a bit more and bugged a few people to find out how they hadn't killed anyone trying to develop with a workflow like this, I have some tips to share!

I got an Amazon Echo for my birthday (from my husband, who took romantic to a new level when he liked my present so much he bought me an Amazon dot a week later so he could use the echo elsewhere in the house!), which is a new gadget for us. Of course I started asking her questions that she couldn't answer ... and you can write your own "skills" so of course I sat down to browse the documentation and ended up creating a working skill for her :) It was a fun process but there were lots of unfamiliar parts to it so I thought I'd blog what I did in case anyone else wants to try out creating skills as well, and in case I ever want to remember some of the stuff I know now!