ec2-instances-info

Golang library providing specs and pricing information about AWS resources such as EC2 instances, RDS databases, ElastiCache and OpenSearch clusters.

It is based on the data that is also powering the comprehensive www.ec2instances.info instance comparison website, but made easier to consume from Go software.

This code is offered under the public domain/unlicense, but we also offer an API that automates data updates, available for a monthly subscription that helps support ongoing development of this library.

Reach out to us on Slack if you're interested in API access.

History

This used to be a part of my other project AutoSpotting which uses it intensively, but I decided to extract it into a dedicated project since it may be useful to someone else out there.

Some data fields that were not needed in AutoSpotting may not yet be exposed but they can be added upon demand.

Installation or update

You will need Go 1.16 or latest, then it's a matter of installing it as usual using go get

go get -u github.com/LeanerCloud/ec2-instances-info/...

Usage

One-off usage, with static data

import "github.com/LeanerCloud/ec2-instances-info"

data, err := ec2instancesinfo.Data() // only needed once

// This would print all the available instance type names:
for _, i := range *data {
  fmt.Println("Instance type", i.InstanceType)
}

See the examples directory for a working code example.

One-off usage, with updated instance type data

import "github.com/LeanerCloud/ec2-instances-info"

key := "API_KEY" // API keys are available upon demand from contact@leanercloud.com, free of charge for personal use

err:= ec2instancesinfo.UpdateData(nil, &key);
if err!= nil{
   fmt.Println("Couldn't update instance type data, reverting to static compile-time data", err.Error())
}

data, err := ec2instancesinfo.Data() // needs to be called once after data updates

// This would print all the available instance type names:
for _, i := range *data {
  fmt.Println("Instance type", i.InstanceType)
}

Continuous usage, with instance type data updated every 2 days

import "github.com/LeanerCloud/ec2-instances-info"

key := "API_KEY"
go ec2instancesinfo.Updater(2, nil, &key); // use 0 or negative values for weekly updates

data, err := ec2instancesinfo.Data() // only needed once

// This would print all the available instance type names:
for _, i := range *data {
  fmt.Println("Instance type", i.InstanceType)
}

Contributing

Pull requests and feedback are welcome.

The data can be updated for new instance type coverage by running make.

Try it out on GCP Cloud Shell

Click on the Terminal then New Terminal in the top menu
In the terminal run cd ~/cloudshell_open/ec2-instances-info/examples/instances/
go run . will run the example code.