Rob Allen's DevNotes – Developing software in the Real World

Changing the AWS API Gateway response status code in SAM

When creating an API with AWS Lambda and Api Gateway, I discovered that a client request to a given resource with a verb that wasn't supported resulted in an unexpected response. You can see this from this curl command to the /test resource which is only defined for GET:

$ curl -i -X PUT https://mh5rwr9q25.execute-api.eu-west-2.amazonaws.com/prod/test
HTTP/2 403
content-type: application/json
content-length: 42

{"message":"Missing Authentication Token"}

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$ curl -i -X PUT https://mh5rwr9q25.execute-api.eu-west-2.amazonaws.com/prod/test

HTTP/2 403

content-type: application/json

content-length: 42

{"message":"Missing Authentication Token"}

Given that I can GET the /Prod/hello resource, I would not expect to see 405 Method Not Allowed for PUT, and 403 Forbidden is a… continue reading.

Posted on 21 May 2019 in AWS Lambda Leave a comment

My Bref Makefile

In order to use Bref efficiently, I've developed a Makefile so that I don't have to remember all the various commands required. In particular, looking up the correct parameters to sam package & sam deploy is a pain and it's much easier to type make deploy and it all works as I expect. It looks like this:

Posted on 15 May 2019 in AWS Lambda, PHP View all 2 comments

PHP Architect: Serverless PHP With Bref, Part 1

I've written a two-part series on Serverless PHP on AWS Lambda using Matthieu Napoli's Bref for php[architect]. Part one has been published in the May 2019 issue and if you're not already a subscriber, you should be! If you just want to learn about Bref though, then my introduction to Bref is available for free, just for you!

Posted on 9 May 2019 in AWS Lambda, More Rob, PHP Leave a comment

Slim 4 Cyclomatic Complexity

There's not much wrong with Slim 3; lots of people are using it very successfully producing APIs and websites of all kinds. For Slim 4 the main goals have been to support PSR-15, make it easier to use your own PSR-7 implementation, improve error handling and remove assumptions that look magical if you don't know they are there. The latter one is the most important to me, personally! Secondarily, Pierre has concentrated on making Slim's… continue reading.

Posted on 3 April 2019 in PHP, Slim Framework Leave a comment

Using img2lambda to publish your Serverless PHP layer

This interesting tweet by Clare Liguori came to my attention last week: This new img2lambda tool will take the layers of a Docker container and convert them to AWS layers for use in Lambda. I poked around with Clare's example and updated my lambda-php project in order to understand how it works. I also rewrote my runtime's bootstrap to make it clearer. The clever thing from my point of view is that you can build… continue reading.

Posted on 31 January 2019 in AWS Lambda, PHP View all 2 comments

rst2pdf: back from the dead!

Today marks a momentous day! I've released 0.94 of rst2pdf to PyPI! If you have a need to convert plain text files to PDF, check it out. As the last release, 0.93, was December 2012, I think you could have reasonably assumed that the project was abandoned. So why did I bring it back from the dead?

Posted on 24 January 2019 in rst2pdf Leave a comment

Setting up IBM Cloud Object Storage

For a little website that I'm writing, I thought that I'd use IBM Cloud Object Storage (equivalent to AWS S3) as I'm generating the pages using OpenWhisk on IBM Cloud Functions. The documentation is quite good if you want to use the website, but is a bit spread all over the place if you're using the command line, which is how I do things. As Cloud Object Storage is a bit of a mouthful, I'll… continue reading.

Posted on 9 January 2019 in Bluemix View all 3 comments

Keyboard control of macOS notification alerts

I use Apple's Reminders app to remind me about things that I need to do. It has the useful feature of syncing across my Mac, iPad and iPhone and I can add to it via Siri in my car. When I am notified on my Mac, a notification alert appears with two buttons: Complete and Later. Clicking Later offers a set of options to dismiss the alert and have it reappear in 5 minutes, in… continue reading.

Posted on in Computing, Software View all 3 comments

Serverless PHP on AWS Lamda

Like, Simon Wardley, I think that serverless computing is an interesting space because the billing is granular (pay only when your code executes) and you don't need to worry about maintaining and provisioning servers or containers. So much so, that I maintain the Open Source PHP Runtime for Apache OpenWhisk which is available commercially as IBM Cloud Functions There are other serverless providers, and AWS Lambda is the market leader, but until recently PHP support… continue reading.

Posted on 2 January 2019 in AWS Lambda, PHP, Serverless Framework View all 7 comments

2018 in pictures

As 2018 draws to a close, I take the time to look at the past year as I have done in years past, I look at the photos that I've taken and reminisce about all that I've done this year. January I started the year with ongoing efforts to reduce the pain in my joints and then visited America for CodeMash in Ohio. This was my second consecutive year speaking at CodeMash and I really… continue reading.

Posted on 31 December 2018 in Me View all 2 comments