`class Request`

Faraday request middleware that rewrites the request for the A2A HTTP+JSON/REST protocol binding.

Reads env.request.context[:a2a_operation] to determine the HTTP verb and path. Interpolates path parameters from the request body (e.g. id=* placeholders). For GET/DELETE operations, remaining params become query string parameters.

Sets Content-Type to application/a2a+json for POST requests.

Definitions

`def path_param_names(pattern)`

Extract name=* placeholder names from a path pattern.

Implementation

def path_param_names(pattern)
  pattern.scan(/\{(\w+)(?:=[^}]*)?\}/).flatten
end

`def interpolate_path(pattern, params)`

Substitute name=* placeholders with values from params. Pattern names are snake_case (e.g. task_id) but Schema#to_h produces camelCase keys (e.g. taskId), so we check both.

Implementation

def interpolate_path(pattern, params)
  pattern.gsub(/\{(\w+)(?:=[^}]*)?\}/) do
    name = $1
    camel = snake_to_camel(name)
    params[name] || params[name.to_sym] ||
      params[camel] || params[camel.to_sym] || ""
  end
end

`def remove_path_params(pattern, params)`

Return params with path-interpolated keys removed.

Implementation

def remove_path_params(pattern, params)
  names = path_param_names(pattern)
  camel_names = names.map { |n| snake_to_camel(n) }
  all_names = (names + camel_names).to_a
  params.reject { |k, _| all_names.include?(k.to_s) }
end

`def snake_to_camel(str)`

"task_id" => "taskId"

Implementation

def snake_to_camel(str)
  str.gsub(/_([a-z])/) { $1.upcase }
end