Concurrency and Modules

Client and Server Threads

Replay one Ruby execution where a client request loads a server helper file.

file panels When an example has more than one source file, replay keeps each file in its own panel while preserving one ordered trace stream. The Variables panel follows the actual `require_relative` load into the server file and the returned response back to the client.
boundary The client owns the selected command and visible output. The server owns the response rule for that command.

Project Entry

command
request_client.rb
Replay: real traced execution (multi-file project)
command = "status"
label = command

if command == "ping"
  label = "health"
elsif command == "count"
  label = "metrics"
end

require_relative "request_server"

response = handle_request(command)
ticket = 40 + command.length

puts "label=#{label}"
puts "ticket=#{ticket}"
puts response

command = "ping"
label = command

if command == "ping"
  label = "health"
elsif command == "count"
  label = "metrics"
end

require_relative "request_server"

response = handle_request(command)
ticket = 40 + command.length

puts "label=#{label}"
puts "ticket=#{ticket}"
puts response

command = "count"
label = command

if command == "ping"
  label = "health"
elsif command == "count"
  label = "metrics"
end

require_relative "request_server"

response = handle_request(command)
ticket = 40 + command.length

puts "label=#{label}"
puts "ticket=#{ticket}"
puts response

  1. command ← status, label ← status

    1command→ status = "status" #@command="ping", "count"2label→ status = commandstatus34if command == "ping"5  label = "health"6elsif command == "count"7  label = "metrics"8end910require_relative "request_server"1112response = handle_request(commandstatus)13ticket = 40 + command.length

  2. access ← ok, response ← service ready

    1command = "status" #@command="ping", "count"2label = command34if command == "ping"5  label = "health"6elsif command == "count"7  label = "metrics"8end910require_relative "request_server"1112response = handle_request(command)13ticket = 40 + command.length
    values this stepokaccessservice readyresponsestatuscommand

  3. response ← ok:service ready, ticket ← 46

    12response→ ok:service ready = handle_request(commandstatus)13ticket→ 46 = 40 + command.length61415puts "label=#{labelstatus}"16puts "ticket=#{ticket46}"17puts responseok:service ready
    outputlabel=status
ticket=46
ok:service ready