Class: A2A::Middleware::LimitPaginationSize

Inherits:
Object
  • Object
show all
Defined in:
lib/a2a/middleware/limit_pagination_size.rb

Overview

Clamps ‘request.page_size` to a valid range and sets `env` for downstream handlers.

Accepts a single integer — the maximum page size (also used as the default when the client doesn’t specify one). Clamps to [1, max].

Usage:

on "ListTasks" do
  use A2A::Middleware::LimitPaginationSize, 50
  respond_with -> (env) {
    page_size = env["a2a.page_size"]
    # ...
  }
end

Instance Method Summary collapse

Constructor Details

#initialize(app, max = 100) ⇒ LimitPaginationSize

Returns a new instance of LimitPaginationSize.



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# File 'lib/a2a/middleware/limit_pagination_size.rb', line 25

def initialize(app, max = 100)
  @app = app
  @max = max
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/a2a/middleware/limit_pagination_size.rb', line 30

def call(env)
  request = env["a2a.request"]

  page_size = @max
  if request.respond_to?(:page_size) && request.page_size
    ps = request.page_size.to_i
    page_size = [[ps, 1].max, @max].min
  end

  env["a2a.page_size"] = page_size

  @app.call(env)
end