Class: ReactOnRails::Dev::ServerManager

Inherits:
Object
  • Object
show all
Defined in:
lib/react_on_rails/dev/server_manager.rb

Constant Summary collapse

HELP_FLAGS = 
["-h", "--help"].freeze
FLAGS_WITH_VALUES =

Flags that take a value as the next argument (not using = syntax)

%w[--route --rails-env].freeze

Class Method Summary collapse

Class Method Details

.cleanup_socket_files ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 115

def cleanup_socket_files
  files = [".overmind.sock", "tmp/sockets/overmind.sock", "tmp/pids/server.pid"]
  killed_any = false

  files.each do |file|
    next unless File.exist?(file)

    puts "   🧹 Removing #{file}"
    File.delete(file)
    killed_any = true
  rescue StandardError
    nil
  end

  killed_any
end

.development_processes ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 44

def development_processes
  {
    "rails" => "Rails server",
    "node.*react[-_]on[-_]rails" => "React on Rails Node processes",
    "overmind" => "Overmind process manager",
    "foreman" => "Foreman process manager",
    "ruby.*puma" => "Puma server",
    "webpack-dev-server" => "Webpack dev server",
    "bin/shakapacker-dev-server" => "Shakapacker dev server"
  }
end

.find_port_pids(port) ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 107

def find_port_pids(port)
  stdout, _status = Open3.capture2("lsof", "-ti", ":#{port}", err: File::NULL)
  stdout.split("\n").map(&:to_i).reject { |pid| pid == Process.pid }
rescue StandardError
  # lsof command not found or other error (permission denied, etc.)
  []
end

.find_process_pids(pattern) ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 71

def find_process_pids(pattern)
  stdout, _status = Open3.capture2("pgrep", "-f", pattern, err: File::NULL)
  stdout.split("\n").map(&:to_i).reject { |pid| pid == Process.pid }
rescue Errno::ENOENT
  # pgrep command not found
  []
end

.kill_port_processes(ports) ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 92

def kill_port_processes(ports)
  killed_any = false

  ports.each do |port|
    pids = find_port_pids(port)
    next unless pids.any?

    puts "   ☠️  Killing process on port #{port} (PIDs: #{pids.join(', ')})"
    terminate_processes(pids)
    killed_any = true
  end

  killed_any
end

.kill_processes ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 35

def kill_processes
  puts "🔪 Killing all development processes..."
  puts ""

  killed_any = kill_running_processes || kill_port_processes([3000, 3001]) || cleanup_socket_files

  print_kill_summary(killed_any)
end

.kill_running_processes ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 56

def kill_running_processes
  killed_any = false

  development_processes.each do |pattern, description|
    pids = find_process_pids(pattern)
    next unless pids.any?

    puts "   ☠️  Killing #{description} (PIDs: #{pids.join(', ')})"
    terminate_processes(pids)
    killed_any = true
  end

  killed_any
end

.print_kill_summary(killed_any) ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 132

def print_kill_summary(killed_any)
  if killed_any
    puts ""
    puts "✅ All processes terminated and sockets cleaned"
    puts "💡 You can now run 'bin/dev' for a clean start"
  else
    puts "   ℹ️  No development processes found running"
  end
end

.run_from_command_line(args = ARGV) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/MethodLength



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# File 'lib/react_on_rails/dev/server_manager.rb', line 160

def run_from_command_line(args = ARGV)
  require "optparse"

  # Get the command early to check for help/kill before running hooks
  # We need to do this before OptionParser processes flags like -h/--help
  # Skip arguments that are values for flags (e.g., "hello_world" after "--route")
  command = extract_command_from_args(args)

  # Check if help flags are present in args (before OptionParser processes them)
  help_requested = args.any? { |arg| HELP_FLAGS.include?(arg) }

  options = { route: nil, rails_env: nil, verbose: false, skip_database_check: false }

  OptionParser.new do |opts|
    opts.banner = "Usage: dev [command] [options]"

    opts.on("--route ROUTE", "Specify the route to display in URLs (default: root)") do |route|
      options[:route] = route
    end

    opts.on("--rails-env ENV", "Override RAILS_ENV for assets:precompile step only (prod mode only)") do |env|
      options[:rails_env] = env
    end

    opts.on("-v", "--verbose", "Enable verbose output for pack generation") do
      options[:verbose] = true
    end

    opts.on("--skip-database-check", "Skip database connectivity check (saves ~1-2s startup time)") do
      options[:skip_database_check] = true
    end

    opts.on("-h", "--help", "Prints this help") do
      show_help
      exit
    end
  end.parse!(args)

  # Run precompile hook once before starting any mode (except kill/help)
  # Then set environment variable to prevent duplicate execution in spawned processes.
  # Note: We always set SHAKAPACKER_SKIP_PRECOMPILE_HOOK=true (even when no hook is configured)
  # to provide a consistent signal that bin/dev is managing the precompile lifecycle.
  # This allows custom scripts to detect bin/dev's presence and adjust behavior accordingly.
  unless %w[kill help].include?(command) || help_requested
    run_precompile_hook_if_present
    ENV["SHAKAPACKER_SKIP_PRECOMPILE_HOOK"] = "true"
  end

  # Main execution
  case command
  when "production-assets", "prod"
    start(:production_like, nil, verbose: options[:verbose], route: options[:route],
                                 rails_env: options[:rails_env],
                                 skip_database_check: options[:skip_database_check])
  when "static"
    start(:static, "Procfile.dev-static-assets", verbose: options[:verbose], route: options[:route],
                                                 skip_database_check: options[:skip_database_check])
  when "kill"
    kill_processes
  when "help"
    show_help
  when "hmr", nil
    start(:development, "Procfile.dev", verbose: options[:verbose], route: options[:route],
                                        skip_database_check: options[:skip_database_check])
  else
    puts "Unknown argument: #{command}"
    puts "Run 'dev help' for usage information"
    exit 1
  end
end

.show_help ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 142

def show_help
  puts help_usage
  puts ""
  puts help_commands
  puts ""
  puts help_options
  puts ""
  puts help_customization
  puts ""
  puts help_mode_details
  puts ""
  puts help_troubleshooting
end

.start(mode = :development, procfile = nil, verbose: false, route: nil, rails_env: nil, skip_database_check: false) ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 16

def start(mode = :development, procfile = nil, verbose: false, route: nil, rails_env: nil,
          skip_database_check: false)
  case mode
  when :production_like
    run_production_like(_verbose: verbose, route: route, rails_env: rails_env,
                        skip_database_check: skip_database_check)
  when :static
    procfile ||= "Procfile.dev-static-assets"
    run_static_development(procfile, verbose: verbose, route: route,
                                     skip_database_check: skip_database_check)
  when :development, :hmr
    procfile ||= "Procfile.dev"
    run_development(procfile, verbose: verbose, route: route,
                              skip_database_check: skip_database_check)
  else
    raise ArgumentError, "Unknown mode: #{mode}"
  end
end

.terminate_processes(pids) ⇒ Object 



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# File 'lib/react_on_rails/dev/server_manager.rb', line 79

def terminate_processes(pids)
  pids.each do |pid|
    Process.kill("TERM", pid)
  rescue Errno::ESRCH, ArgumentError, RangeError
    # Process already stopped, or invalid signal/PID - silently skip
    nil
  rescue Errno::EPERM
    # Permission denied - warn the user
    puts "   ⚠️  Process #{pid} - permission denied (process owned by another user)"
    nil
  end
end