Create simple endpoints with routing rules, similar to Sinatra actions.
Simplest example:
use Rack::SimpleEndpoint, '/ping_monitor' do 'pong' end
The value returned from the block will be written to the response body, so the above example will return "pong" when the request path is /ping_monitor.
HTTP verb requirements can optionally be specified:
use Rack::SimpleEndpoint, '/foo' => :get do 'only GET requests will match' end use Rack::SimpleEndpoint, '/bar' => [:get, :post] do 'only GET and POST requests will match' end
Rack::Request and Rack::Response objects are yielded to block:
use Rack::SimpleEndpoint, '/json' do |req, res| res['Content-Type'] = 'application/json' %({"foo": "#{req[:foo]}"}) end
When path is a Regexp, match data object is yielded as third argument to block
use Rack::SimpleEndpoint, %r{^/(john|paul|george|ringo)} do |req, res, match| "Hello, #{match[1]}" end
A :pass symbol returned from block will not return a response; control will continue down the Rack stack:
use Rack::SimpleEndpoint, '/api_key' do |req, res| req.env['myapp.user'].authorized? ? '12345' : :pass end # Unauthorized access to /api_key will be handled by PublicApp run PublicApp
# File lib/rack/contrib/simple_endpoint.rb, line 53 def call(env) match = match_path(env['PATH_INFO']) if match && valid_method?(env['REQUEST_METHOD']) req, res = Request.new(env), Response.new body = @block.call(req, res, (match unless match == true)) body == :pass ? @app.call(env) : (res.write(body); res.finish) else @app.call(env) end end
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