Module: MuxTf::Cli::Mux

Extended by:
PiotrbCliUtils::ShellHelpers, PiotrbCliUtils::Util
Defined in:
lib/mux_tf/cli/mux.rb

Class Method Summary collapse

Class Method Details

.parse_control_line(line) ⇒ Object 



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# File 'lib/mux_tf/cli/mux.rb', line 74

def parse_control_line(line)
  keyword, remainder = line.split(" ", 2)
  case keyword
  when "%begin"
    # n1, n2, n3, remainder = remainder.split(" ", 4)
    p [:begin, n1, n2, n3, remainder]
  when "%end"
    # n1, n2, n3, remainder = remainder.split(" ", 4)
    p [:end, n1, n2, n3, remainder]
  when "%session-changed"
    # n1, s1, remainder = remainder.split(" ", 3)
    # p [:session_changed, n1, s1, remainder]
  when "%window-pane-changed"
    # n1, n2, remainder = remainder.split(" ", 3)
    # p [:window_pane_changed, n1, n2, remainder]
  when "%layout-change"
    # ignore
    # p [:layout_change, remainder]
  when "%pane-mode-changed"
    # ignore
    p [:layout_change, remainder]
  when "%subscription-changed"
    sub_name, n1, n2, n3, n4, _, remainder = remainder.split(" ", 7)
    if sub_name == "pane-info"
      pane_id, pane_index, pane_title, pane_dead_status = remainder.strip.split(",", 4)
      if pane_dead_status != ""
        p [:pane_exited, pane_id, pane_index, pane_title, pane_dead_status]
        Tmux.kill_pane(pane_id)
        panes = Tmux.list_panes
        if panes.length == 1 && panes.first[:name] == "spawner"
          Tmux.kill_pane(panes.first[:id])
          # its the last pane, so the whole thing should exit
        end
      end
    else
      p [:subscription_changed, sub_name, n1, n2, n3, n4, remainder]
    end
  when "%output"
    pane, = remainder.split(" ", 2)
    if pane == "%1"
      # skip own output
      # else
      #   p [:output, pane, remainder]
    end
  else
    p [keyword, remainder]
  end
end

.run(args) ⇒ Object 



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# File 'lib/mux_tf/cli/mux.rb', line 27

def run(args)
  if ENV["MUX_V2"]
    run_v2(args)
  else
    run_v1(args)
  end
end

.run_create_session ⇒ Object 



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# File 'lib/mux_tf/cli/mux.rb', line 35

def run_create_session
  project = File.basename(Dir.getwd)

  if Tmux.session_running?(project)
    log "Killing existing session ..."
    Tmux.kill_session(project)
  end

  log "Starting new session ..."
  with_clean_env do
    Tmux.new_session project
  end
  Tmux.select_pane "initial"

  window_id = Tmux.list_windows.first[:id]

  Tmux.set "remain-on-exit", "on"

  Tmux.set_hook "pane-exited", "select-layout tiled"
  Tmux.set_hook "window-pane-changed", "select-layout tiled"
  Tmux.set_hook "pane-exited", "select-layout tiled"

  Tmux.set "mouse", "on"

  puts "\e]0;tmux: #{project}\007"

  Tmux.split_window :horizontal, "#{project}:#{window_id}", cwd: Dir.getwd,
                                                            cmd: File.expand_path(File.join(__dir__, "..", "..", "..", "exe", "tf_mux spawner"))
  Tmux.select_pane "spawner"

  initial_pane = Tmux.find_pane("initial")
  Tmux.kill_pane initial_pane[:id]
  Tmux.tile!

  log "Attaching ..."
  Tmux.attach(project)
  log "Done!"
end

.run_spawner ⇒ Object 



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# File 'lib/mux_tf/cli/mux.rb', line 123

def run_spawner
  project = File.basename(Dir.getwd)

  control_thread = Thread.new do
    puts "Control Thread Started"
    Tmux.attach_control(project, on_spawn: lambda { |stdin|
      stdin.write("refresh-client -B \"pane-info:%*:\#{pane_id},\#{pane_index},\#{pane_title},\#{pane_dead_status}\"\n")
      stdin.flush
    }, on_line: lambda { |stream, line|
      if stream == :stdout
        parse_control_line(line)
        # p info
      else
        p [stream, line]
      end
    })
    puts "Control Thread Exited"
  end

  begin
    log "Enumerating folders ..."
    dirs = enumerate_terraform_dirs

    fail_with "Error: - no subfolders detected! Aborting." if dirs.empty?

    tasks = dirs.map { |dir|
      {
        name: dir,
        cwd: dir,
        cmd: File.expand_path(File.join(__dir__, "..", "..", "..", "exe", "tf_current"))
      }
    }

    if ENV["MUX_TF_AUTH_WRAPPER"]
      log "Warming up AWS connection ..."
      words = Shellwords.shellsplit(ENV["MUX_TF_AUTH_WRAPPER"])
      result = capture_shell([*words, "aws", "sts", "get-caller-identity"], raise_on_error: true)
      p JSON.parse(result)
    end

    window_id = Tmux.list_windows.first[:id]

    return if tasks.empty?

    tasks.each do |task|
      log "launching task: #{task[:name]} ...", depth: 2
      Tmux.split_window :horizontal, "#{project}:#{window_id}", cmd: task[:cmd], cwd: task[:cwd]
      Tmux.select_pane task[:name]
      Tmux.tile!
      task[:commands]&.each do |cmd|
        Tmux.send_keys cmd, enter: true
      end
    end
  ensure
    control_thread.join
  end
end

.run_v1(_args) ⇒ Object 



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# File 'lib/mux_tf/cli/mux.rb', line 191

def run_v1(_args)
  Dotenv.load(".env.mux")

  dirs = enumerate_terraform_dirs

  tasks = dirs.map { |dir|
    {
      name: dir,
      cwd: dir,
      cmd: File.expand_path(File.join(__dir__, "..", "..", "..", "exe", "tf_current"))
    }
  }

  project = File.basename(Dir.getwd)

  if ENV["MUX_TF_AUTH_WRAPPER"]
    log "Warming up AWS connection ..."
    words = Shellwords.shellsplit(ENV["MUX_TF_AUTH_WRAPPER"])
    result = capture_shell([*words, "aws", "sts", "get-caller-identity"], raise_on_error: true)
    p JSON.parse(result)
  end

  if Tmux.session_running?(project)
    log "Killing existing session ..."
    Tmux.kill_session(project)
  end

  log "Starting new session ..."
  with_clean_env do
    Tmux.new_session project
  end
  Tmux.select_pane "initial"

  # Tmux.set "remain-on-exit", "on"

  Tmux.set_hook "pane-exited", "select-layout tiled"
  Tmux.set_hook "window-pane-changed", "select-layout tiled"

  Tmux.set "mouse", "on"

  window_id = Tmux.list_windows.first[:id]

  unless tasks.empty?
    tasks.each do |task|
      log "launching task: #{task[:name]} ...", depth: 2
      Tmux.split_window :horizontal, "#{project}:#{window_id}", cmd: task[:cmd], cwd: task[:cwd]
      Tmux.select_pane task[:name]
      Tmux.tile!
      task[:commands]&.each do |cmd|
        Tmux.send_keys cmd, enter: true
      end
    end
  end

  log "Almost done ..."

  initial_pane = Tmux.find_pane("initial")
  Tmux.kill_pane initial_pane[:id]
  Tmux.tile!

  puts "\e]0;tmux: #{project}\007"

  sleep 1

  log "Attaching ..."
  Tmux.attach(project, cc: !!ENV["MUXP_CC_MODE"])
  log "Done!"
end

.run_v2(args) ⇒ Object 



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# File 'lib/mux_tf/cli/mux.rb', line 181

def run_v2(args)
  Dotenv.load(".env.mux")

  if args[0] == "spawner"
    run_spawner
  else
    run_create_session
  end
end

.with_clean_env ⇒ Object 



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# File 'lib/mux_tf/cli/mux.rb', line 12

def with_clean_env
  backup = {}
  Bundler.with_original_env do
    ENV.keys.grep(/^(RBENV_|RUBYLIB)/).each do |key|
      backup[key] = ENV.fetch(key)
      ENV.delete(key)
    end
    yield
  end
ensure
  backup.each do |k, v|
    ENV[k] = v
  end
end