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https://github.com/aereal/injecuet
The injecuet injects concrete values and emits new CUE document.
https://github.com/aereal/injecuet
cuelang
Last synced: 18 days ago
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The injecuet injects concrete values and emits new CUE document.
- Host: GitHub
- URL: https://github.com/aereal/injecuet
- Owner: aereal
- License: mit
- Created: 2021-08-15T08:49:39.000Z (almost 3 years ago)
- Default Branch: main
- Last Pushed: 2024-06-13T11:25:11.000Z (19 days ago)
- Last Synced: 2024-06-13T14:13:02.628Z (19 days ago)
- Topics: cuelang
- Language: Go
- Homepage:
- Size: 146 KB
- Stars: 2
- Watchers: 3
- Forks: 0
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Lists
- awesome-cue - injecuet - The injecuet injects concrete values and emits new CUE document. (Projects)
README
[![status][ci-status-badge]][ci-status]
[![PkgGoDev][pkg-go-dev-badge]][pkg-go-dev]
# injecuet
injecuet (ɪndʒékjuːt) = inject + [CUE][cuelang]
The injecuet injects concrete values and emits new CUE document.
You can pass emitted new CUE document as `cue eval` or `cue export` argument to generate unified CUE document or other format such as JSON or YAML.
(See [CUE integrations][cue-integrations])
Current supported injection sources:
- environment variables
- Terraform state
## Concept
The injecuet neither have type conversion mechanism nor data validation mechanism by design.
The CUE has [Types are values][types-are-values] concept, so you already get data validation mechanism from CUE.
For example, if you expected the injected values must not be empty, you just write `!= ""` restriction and `cue eval` fails if injected value is empty.
You can also use [CUE modules][cue-modules] such as [strconv][cue-strconv] to parse injected string as integers.
## Synopsis
### Environment variables
```sh
cat src.cue
# name: string @inject(env,name=USER_NAME)
env USER_NAME=aereal injecuet ./src.cue
# name: "aereal" @inject(env,name=USER_NAME)
```
```sh
cat complex.cue
# import "strconv"
#
# #varAge: string @inject(env,name=AGE)
# age: strconv.Atoi(#varAge)
env AGE=17 injecuet -output ./out.gen.cue ./src.cue
cat out.gen.cue
# #varAge: "123"
# age: 123
cue export ./out.gen.cue
# {
# "age": 123
# }
```
You can use injecuet with [ssmwrap][ssmwrap]:
```sh
cat src.cue
# secretKey: string @inject(env,name=APP_SECRET_KEY)
ssmwrap -env-prefix APP_ -recursive injecuet ./src.cue
# secretKey: "" @inject(env=APP_SECRET_KEY)
```
### Terraform state
You can pass file path or URL to `stateURL`.
Supported URL formats are described on [tfstate-lookup][].
See examples.
## Installation
```sh
go get github.com/aereal/injecuet/cmd/injecuet
```
## Library usage
The injecuet also provides library interface.
See [pkg.go.dev][pkg-go-dev]
## License
See LICENSE file.
[pkg-go-dev]: https://pkg.go.dev/github.com/aereal/injecuet
[pkg-go-dev-badge]: https://pkg.go.dev/badge/aereal/injecuet
[ci-status-badge]: https://github.com/aereal/injecuet/workflows/CI/badge.svg?branch=main
[ci-status]: https://github.com/aereal/injecuet/actions/workflows/CI
[cuelang]: https://cuelang.org/
[cue-integrations]: https://cuelang.org/docs/integrations/
[types-are-values]: https://cuelang.org/docs/concepts/logic/#types-are-values
[cue-modules]: https://cuelang.org/docs/concepts/packages/
[cue-strconv]: https://pkg.go.dev/cuelang.org/[email protected]/pkg/strconv
[ssmwrap]: https://github.com/handlename/ssmwrap
[tfstate-lookup]: https://github.com/fujiwara/tfstate-lookup