136 lines
2.9 KiB
Ruby
136 lines
2.9 KiB
Ruby
# frozen_string_literal: true
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require 'uri'
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require 'net/http'
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require 'rack'
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module Capybara
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class Server
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class Middleware
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class Counter
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attr_reader :value
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def initialize
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@value = 0
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@mutex = Mutex.new
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end
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def increment
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@mutex.synchronize { @value += 1 }
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end
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def decrement
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@mutex.synchronize { @value -= 1 }
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end
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end
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attr_accessor :error
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def initialize(app, server_errors)
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@app = app
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@counter = Counter.new
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@server_errors = server_errors
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end
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def pending_requests?
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@counter.value > 0
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end
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def call(env)
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if env["PATH_INFO"] == "/__identify__"
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[200, {}, [@app.object_id.to_s]]
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else
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@counter.increment
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begin
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@app.call(env)
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rescue *@server_errors => e
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@error ||= e
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raise e
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ensure
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@counter.decrement
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end
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end
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end
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end
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class << self
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def ports
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@ports ||= {}
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end
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end
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attr_reader :app, :port, :host
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def initialize(app, port = Capybara.server_port, host = Capybara.server_host, server_errors = Capybara.server_errors)
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@app = app
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@server_thread = nil # suppress warnings
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@host, @port, @server_errors = host, port, server_errors
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@port ||= Capybara::Server.ports[port_key]
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@port ||= find_available_port(host)
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end
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def reset_error!
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middleware.error = nil
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end
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def error
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middleware.error
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end
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def responsive?
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return false if @server_thread && @server_thread.join(0)
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res = Net::HTTP.start(host, port) { |http| http.get('/__identify__') }
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if res.is_a?(Net::HTTPSuccess) or res.is_a?(Net::HTTPRedirection)
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return res.body == app.object_id.to_s
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end
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rescue SystemCallError
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return false
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end
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def wait_for_pending_requests
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Timeout.timeout(60) { sleep(0.01) while pending_requests? }
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rescue Timeout::Error
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raise "Requests did not finish in 60 seconds"
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end
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def boot
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unless responsive?
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Capybara::Server.ports[port_key] = port
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@server_thread = Thread.new do
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Capybara.server.call(middleware, port, host)
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end
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Timeout.timeout(60) { @server_thread.join(0.1) until responsive? }
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end
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rescue Timeout::Error
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raise "Rack application timed out during boot"
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else
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self
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end
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private
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def middleware
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@middleware ||= Middleware.new(app, @server_errors)
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end
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def port_key
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Capybara.reuse_server ? app.object_id : middleware.object_id
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end
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def pending_requests?
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middleware.pending_requests?
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end
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def find_available_port(host)
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server = TCPServer.new(host, 0)
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server.addr[1]
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ensure
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server.close if server
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end
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end
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end
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