Building Static Ruby Gems for Lambda Zip or Containers using Docker & Amazon Linux

• ruby-vips-lambda

  1 37 0.0 Dockerfile

  Discontinued AWS Lambda Layer for Ruby Libvips Gem

  

Prior to Lambda Containers we had to build a Lambda Layer using a myriad of techniques. The result was always something in the /opt directory, yet finding the right balance of what to put in that directory has always been a pain. For example, if your gem uses FFI (like ruby-vips) how do I build a layer, test it, and make sure that same layer is available for local development? Often times this required engineering some Docker & AWS SDK coordination. Not a simple process when means it could easily break or slow down testing upgrades to either the gem or supporting layer.

• Nokogiri

  20 6,108 9.4 C

  Nokogiri (鋸) makes it easy and painless to work with XML and HTML from Ruby.

  

The Ruby community is no stranger to this practice. Thanks to Ruby Heros like Luis Lavena, many of our popular gems have precompile Windows binaries. Today other projects like Nokogiri are now supporting precompiled gem packages for several platforms. This makes gem installs easier for both Lambda zip and containers by avoiding layers or container deployed system dependencies. It also makes our bundle installs much much faster. This time adds up for both development and our build pipelines.

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• mysql2-lambda

  1 23 0.0 Dockerfile

  Discontinued Precompiled Mysql2 Gem for AWS Lambda

  

Here are some of the highlights from the mysql2-lambda project on how I built this gem for Lambda.

• aws-sam-cli

  22 6,445 9.8 Python

  CLI tool to build, test, debug, and deploy Serverless applications using AWS SAM

  

Since this project is for Lambda, we used the base image provided by AWS SAM CLI.

• patchelf

  12 3,261 3.6 C

  A small utility to modify the dynamic linker and RPATH of ELF executables

  

There is a great tool called ldd which lists dynamic dependencies. In my case the mysql2 gem did not statically link all dependencies. This is why I had to use patchelf to fix a few.

• serverless-application-model

  98 9,241 9.2 Python

  The AWS Serverless Application Model (AWS SAM) transform is a AWS CloudFormation macro that transforms SAM templates into CloudFormation templates.

  

Welcome to my 3rd post in a long running series on Lambda & Containers. If you are a Rubyist new to Lambda and the Serverless Application Model (SAM), consider looking over this Ruby Microservice Workshop.

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