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Generate Terraform tfvars file using Go text/template, mapping values from cloud provider SDK

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tfvarser 👋

Generate tfvars file by mapping live cloud resources (query via SDK) to a tfvars template

A quick hack to reduce toils in importing hundreds of scaling groups by hand

Disclaimer: the templates are curated to specific needs and not really for general use, at least for now as this is only a quick hack to help current task. So keeping the source close by will come in handy every now and then (modifying, rebuilding, etc.)

Installation

$ make go-build will build the tfvarser binary in ./bin/tfvarser according to your machine's OS and arch.

You can also build it yourself using simple gotools

Usage & Examples

Requires some form of authentication to interact with cloud provider's API

Aliyun

export ALICLOUD_ACCESS_KEY=
export ALICLOUD_SECRET_KEY=
export ALICLOUD_REGION_ID=ap-southeast-1 # default
# example generate by names
$ tfvarser -provider ali -obj ess -limit-names testapp,node-qwertyapp,go-asdfapp

# or just import by ID
$ tfvarser -provider ali -obj ess -limit-ids asdf1234

# or just import one at a time
$ tfvarser -provider ali -obj ess -limit-names testapp

Command above will generate the following structure:

├── testapp
│   ├── autoscale
│   │   ├── ess-alarms
│   │   │   ├── go-testapp-downscale
│   │   │   │   └── terraform.tfvars
│   │   │   └── go-testapp-upscale
│   │   │       └── terraform.tfvars
│   │   ├── ess-lifecycle-hooks
│   │   │   ├── autoscaledown-event-mns-queue
│   │   │   │   └── terraform.tfvars
│   │   │   └── autoscaleup-event-mns-queue
│   │   │       └── terraform.tfvars
│   │   ├── ess-scaling-configurations
│   │   │   ├── go-testapp-1c-1gb
│   │   │   │   └── terraform.tfvars
│   │   │   └── go-testapp-1c-500mb
│   │   │       └── terraform.tfvars
│   │   ├── ess-scaling-group
│   │   │   └── terraform.tfvars
│   │   └── ess-scaling-rules
│   │       ├── auto-downscale
│   │       │   └── terraform.tfvars
│   │       └── auto-upscale
│   │           └── terraform.tfvars

Every provider objects e.g. ESS or ECS in Aliyun may decide what limit-names and limit-ids correspond to.

For example, in Aliyun ESS object limit-names and limit-ids will limit by scaling group's name and ID.