Jealousy
Jealousy is a simple wrapper trait around the envy crate. The envy crate allows for easy deserialization of any structure from the environment. This crate adds the following features on top of that:
FromEnv
trait that can be implemented on any deserializable struct- Logging surrounding the envy crate and errors, for easier debugging
- derive macro (behind
derive
feature) to not have to write the boilerplate
Installation
You can either use cargo add jealousy
or
add jealousy = "0.1.3"
to the dependencies in your Cargo.toml.
features
derive
Allows for using the derive macro instead of having to implement the trait
Usage
The default impl of from_env should be enough for most use cases. The following will deserialize the struct's fields from the following environment variables:
CONFIG_VAR1
CONFIG_VAR2
Both methods, the trait AND the derive macro, use the default impl of the from_env method.
Trait
use Deserialize;
use FromEnv;
Derive (requires feature: derive
)
The derive macro mainly prevents the boilerplate you see above. It is functionally identical in every other way.
use Deserialize;
use FromEnv;