Rede Placeholders

TODO

lib.rs:

Library to provide functions and structures to work with rede placeholders. It's based on an execution flow with three steps:

• Extract the request' Placeholders.
• Use a Resolver with different ValuePicker to identify the values to replace each placeholder.
• Pass the placeholders and the resolved values to the Renderer to create a new request.

Example

#
let toml = r#"
    http = { url = "http://localhost:8080/{{api_version}}/example/{{id}}", method = "GET" }
    query_params = { token = "{{API_TOKEN}}" }
    variables = { api_version = "v1" }
"#;
let request = rede_parser::parse_request(toml).unwrap();

// find placeholders
let placeholders = (&request).into();
// identify values, as the resolver uses the variables picker, it should be dropped before the render step
let ph_values = {
    let resolver = Resolver::new()
        .add_picker(Box::new(EnvVarPicker))
        .add_picker(Box::new(VariablesPicker::new(&request.variables)));
    resolver.resolve(&placeholders)
};
// render new request
let renderer = Renderer::new(&placeholders, ph_values);
let rendered = renderer.render(request)?;

assert_eq!(rendered.url, "http://localhost:8080/v1/example/{{id}}");
assert_eq!(rendered.query_params[0].1, "token_from_env_var".to_string());