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yml2env's Introduction

yml2env

Build Status

Either executes a command with environment variables taken from a YAML file, or prints a load of exports you can eval

yml2env <path-to-yaml-file> [<command> | --eval]

# Run command with env vars from YAML file
$ yml2env vars.yml tests.sh

# Set env vars in current shell
$ eval "$(yml2env var.yml --eval)"

Why?

It's quite handy for using Concourse --load-vars-from files when running local tasks, like tests. The --eval feature is useful when you need to get lots of stuff from the output of a Concourse Terraform resource as env vars.

Example

Given a YAML file stored in ci/vars/local.yml:

---
cf_username: admin
cf_password: whevsmate

...running yml2env ci/vars/local.yml fly execute ci/tasks/system-tests.yml is equivalent to running

CF_USERNAME=admin CF_PASSWORD=whevsmate fly execute ci/tasks/system-tests.yml

Installation

Go developers

go get github.com/EngineerBetter/yml2env

Everyone else

  1. Download a release
  2. Move to $PATH and rename to yml2env
  3. chmod +x yml2env

Testing

go test ./...

yml2env's People

Contributors

saphmb avatar crsimmons avatar

Stargazers

Leo avatar avatar Danilo avatar Norik Davtian avatar avatar Levent Sagiroglu avatar Jonathan Matthews avatar avatar Diogo Lemos avatar

Watchers

James Cloos avatar Daniel Jones avatar Conch Horse avatar avatar avatar

Forkers

jabley jaygehlot 95rade norikdavtian

yml2env's Issues

yml2env shouldn't automatically uppercase envvars!

Heya - envvars aren't always upper case!

By doing https://github.com/EngineerBetter/yml2env/blob/master/yml2env.go#L35, (I /think/) case-sensitive envvar consumers can't use the tool.

One such consumer is bosh create-env --env-vars=PREFIX, which equates -v foo=bar with export MY_foo=bar ; bosh create-env --env-vars=MY.

Given that bosh manifests and ops files tend to use lower case vars, this is a whole use case being ruled out by (I /think/) just the above line #35.

Add option for prefix

As JSON is a subset of YAML, we can use yml2env to parse JSON files too - for instance the metadata output by a Concourse Terraform resource's get step. This will save some export CF_THING=$(cat metadata | jq blah) verbosity in our Sombrero project and elsewhere.

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