[−][src]Crate germinate
This crate provides a method of injecting variables from multiple external sources into a
template string. Sources can be anything as long as they implement the
Loader
trait which handles the
loading of the variables in a standard way.
Sources
Built In
These are the currently implemented sources and their associated template keys
Source | Key | Description |
---|---|---|
AWS EC2 Instance Tags | awsec2tag | Load the value of AWS EC2 Instance Tags by their key |
AWS EC2 Metadata Service | awsec2metadata | Load a value from the AWS EC2 Metadata Service by it's path |
Environment Variables | env | Load the value of an environment variable |
Example
let mut seed = Seed::new("Hi %env:NAME%!"); let output = seed.germinate().await?; assert_eq!("Hi John!", output);
Custom Sources
You can also include your own sources using the
Seed::add_custom_loader
method. The only requirement is that the custom loader must implement the
Loader
trait
Example
let mut seed = Seed::new("Hi %name:name%"); // Add a custom loader for the name key. This is the loader that will be used whenever // germinate finds %name:...% in the template string seed.add_custom_loader("name".to_string(), Box::new(NameLoader {})); let output = seed.germinate().await?; assert_eq!("Hi John", output);
Structs
Seed | A |
Traits
Loader | A type implementing the Loader trait can be used to load a value from a store by it's key |