Module: Harnex

Defined in:
lib/harnex/cli.rb,
lib/harnex/core.rb,
lib/harnex/version.rb,
lib/harnex/watcher.rb,
lib/harnex/adapters.rb,
lib/harnex/commands/run.rb,
lib/harnex/adapters/base.rb,
lib/harnex/commands/logs.rb,
lib/harnex/commands/pane.rb,
lib/harnex/commands/send.rb,
lib/harnex/commands/stop.rb,
lib/harnex/commands/wait.rb,
lib/harnex/runtime/inbox.rb,
lib/harnex/adapters/codex.rb,
lib/harnex/commands/guide.rb,
lib/harnex/adapters/claude.rb,
lib/harnex/commands/skills.rb,
lib/harnex/commands/status.rb,
lib/harnex/runtime/message.rb,
lib/harnex/runtime/session.rb,
lib/harnex/watcher/inotify.rb,
lib/harnex/watcher/polling.rb,
lib/harnex/adapters/generic.rb,
lib/harnex/commands/recipes.rb,
lib/harnex/runtime/api_server.rb,
lib/harnex/runtime/session_state.rb,
lib/harnex/runtime/file_change_hook.rb

Defined Under Namespace

Modules: Adapters, Inotify, Polling, Watcher Classes: ApiServer, BinaryNotFound, CLI, FileChangeHook, Guide, Inbox, Logs, Message, Pane, Recipes, Runner, Sender, Session, SessionState, Skills, Status, Stopper, Waiter, WatchConfig

Constant Summary collapse

DEFAULT_HOST = 
env_value("HARNEX_HOST", default: "127.0.0.1")
DEFAULT_BASE_PORT = 
Integer(env_value("HARNEX_BASE_PORT", default: "43000"))
DEFAULT_PORT_SPAN = 
Integer(env_value("HARNEX_PORT_SPAN", default: "4000"))
DEFAULT_ID = 
"default"
WATCH_DEBOUNCE_SECONDS = 
1.0
STATE_DIR = 
File.expand_path(env_value("HARNEX_STATE_DIR", default: "~/.local/state/harnex"))
SESSIONS_DIR = 
File.join(STATE_DIR, "sessions")
ID_ADJECTIVES = 
%w[
  bold blue calm cool dark dry fast gold gray green
  keen loud mint pale pink red shy slim soft warm
].freeze
ID_NOUNS = 
%w[
  ant bat bee cat cod cow cub doe elk fox
  hen jay kit owl pug ram ray seal wasp yak
].freeze
VERSION = 
"0.3.1"
RELEASE_DATE = 
"2026-04-19"

Class Method Summary collapse

Class Method Details

.active_session_ids(repo_root) ⇒ Object 



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# File 'lib/harnex/core.rb', line 85

def active_session_ids(repo_root)
  active_sessions(repo_root).map { |session| session["id"].to_s.downcase }.to_set
end

.active_sessions(repo_root = nil, id: nil, cli: nil) ⇒ Object 



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# File 'lib/harnex/core.rb', line 122

def active_sessions(repo_root = nil, id: nil, cli: nil)
  FileUtils.mkdir_p(SESSIONS_DIR)
  pattern =
    if repo_root
      File.join(SESSIONS_DIR, "#{repo_key(repo_root)}--*.json")
    else
      File.join(SESSIONS_DIR, "*.json")
    end

  target_id_key = id.nil? ? nil : id_key(id)
  normalized_cli = cli_key(cli)

  Dir.glob(pattern).sort.filter_map do |path|
    data = JSON.parse(File.read(path))
    if data["pid"] && alive_pid?(data["pid"])
      session = data.merge("registry_path" => path)
      next if target_id_key && id_key(session["id"].to_s) != target_id_key
      next if normalized_cli && cli_key(session_cli(session)) != normalized_cli

      session
    else
      FileUtils.rm_f(path)
      nil
    end
  rescue JSON::ParserError
    FileUtils.rm_f(path)
    nil
  end
end

.alive_pid?(pid) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/harnex/core.rb', line 152

def alive_pid?(pid)
  Process.kill(0, Integer(pid))
  true
rescue Errno::ESRCH
  false
rescue Errno::EPERM
  true
end

.allocate_port(repo_root, id, requested_port = nil, host: DEFAULT_HOST) ⇒ Object 



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# File 'lib/harnex/core.rb', line 232

def allocate_port(repo_root, id, requested_port = nil, host: DEFAULT_HOST)
  if requested_port
    return requested_port if port_available?(host, requested_port)

    raise "port #{requested_port} is already in use on #{host}"
  end

  seed = Digest::SHA256.hexdigest("#{repo_root}\0#{normalize_id(id)}").to_i(16)
  offset = seed % DEFAULT_PORT_SPAN

  DEFAULT_PORT_SPAN.times do |index|
    port = DEFAULT_BASE_PORT + ((offset + index) % DEFAULT_PORT_SPAN)
    return port if port_available?(host, port)
  end

  raise "could not find a free port in #{DEFAULT_BASE_PORT}-#{DEFAULT_BASE_PORT + DEFAULT_PORT_SPAN - 1}"
end

.build_adapter(cli, argv) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/harnex/core.rb', line 258

def build_adapter(cli, argv)
  raise ArgumentError, "cli is required" if cli.to_s.strip.empty?

  Adapters.build(cli, argv)
end

.build_watch_config(path, repo_root) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/harnex/core.rb', line 268

def build_watch_config(path, repo_root)
  return nil if path.nil?

  raise "file watch is unsupported on this system" unless Watcher.available?

  display_path = path.to_s.strip
  raise ArgumentError, "--watch requires a value" if display_path.empty?

  absolute_path = File.expand_path(display_path, repo_root)
  FileUtils.mkdir_p(File.dirname(absolute_path))

  WatchConfig.new(
    absolute_path: absolute_path,
    display_path: display_path,
    hook_message: "file-change-hook: read #{display_path}",
    debounce_seconds: WATCH_DEBOUNCE_SECONDS
  )
end

.cli_key(cli) ⇒ Object 



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# File 'lib/harnex/core.rb', line 55

def cli_key(cli)
  value = cli.to_s.strip.downcase
  return nil if value.empty?

  value.gsub(/[^a-z0-9]+/, "-").gsub(/\A-+|-+\z/, "")
end

.current_session_context(env = ENV) ⇒ Object 



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# File 'lib/harnex/core.rb', line 62

def current_session_context(env = ENV)
  session_id = env["HARNEX_SESSION_ID"].to_s.strip
  cli = env["HARNEX_SESSION_CLI"].to_s.strip
  id = env["HARNEX_ID"].to_s.strip
  repo_root = env["HARNEX_SESSION_REPO_ROOT"].to_s.strip
  return nil if session_id.empty? || cli.empty? || id.empty?

  {
    session_id: session_id,
    cli: cli,
    id: id,
    repo_root: repo_root.empty? ? nil : repo_root
  }
end

.env_value(name, default: nil) ⇒ Object 



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# File 'lib/harnex/core.rb', line 12

def env_value(name, default: nil)
  ENV.fetch(name, default)
end

.exit_status_path(repo_root, id) ⇒ Object 



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# File 'lib/harnex/core.rb', line 104

def exit_status_path(repo_root, id)
  exit_dir = File.join(STATE_DIR, "exits")
  FileUtils.mkdir_p(exit_dir)
  File.join(exit_dir, "#{session_file_slug(repo_root, id)}.json")
end

.format_relay_message(text, from:, id:, at: Time.now) ⇒ Object 



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# File 'lib/harnex/core.rb', line 77

def format_relay_message(text, from:, id:, at: Time.now)
  header = "[harnex relay from=#{from} id=#{normalize_id(id)} at=#{at.iso8601}]"
  body = text.to_s
  return header if body.empty?

  "#{header}\n#{body}"
end

.generate_id(repo_root) ⇒ Object 



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# File 'lib/harnex/core.rb', line 89

def generate_id(repo_root)
  taken = active_session_ids(repo_root)
  ID_ADJECTIVES.product(ID_NOUNS).shuffle.each do |adj, noun|
    candidate = "#{adj}-#{noun}"
    return candidate unless taken.include?(candidate)
  end

  "session-#{SecureRandom.hex(4)}"
end

.id_key(id) ⇒ Object 



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# File 'lib/harnex/core.rb', line 51

def id_key(id)
  normalize_id(id).downcase.gsub(/[^a-z0-9]+/, "-").gsub(/\A-+|-+\z/, "")
end

.normalize_id(id) ⇒ Object 



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# File 'lib/harnex/core.rb', line 44

def normalize_id(id)
  value = id.to_s.strip
  raise "id is required" if value.empty?

  value
end

.output_log_path(repo_root, id) ⇒ Object 



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# File 'lib/harnex/core.rb', line 110

def output_log_path(repo_root, id)
  output_dir = File.join(STATE_DIR, "output")
  FileUtils.mkdir_p(output_dir)
  File.join(output_dir, "#{session_file_slug(repo_root, id)}.log")
end

.parent_pid(pid) ⇒ Object 



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# File 'lib/harnex/core.rb', line 216

def parent_pid(pid)
  stat = File.read("/proc/#{pid}/stat")
  # Field 4 is ppid (fields are space-separated, field 1 is pid,
  # field 2 is (comm) which may contain spaces, field 3 is state, field 4 is ppid)
  parts = stat.match(/\A\d+\s+\(.*?\)\s+\S+\s+(\d+)/)
  parts ? parts[1].to_i : nil
rescue Errno::ENOENT, Errno::EACCES
  nil
end

.port_available?(host, port) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/harnex/core.rb', line 250

def port_available?(host, port)
  server = TCPServer.new(host, port)
  server.close
  true
rescue Errno::EADDRINUSE, Errno::EACCES
  false
end

.read_registry(repo_root, id = DEFAULT_ID, cli: nil) ⇒ Object 



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# File 'lib/harnex/core.rb', line 161

def read_registry(repo_root, id = DEFAULT_ID, cli: nil)
  sessions = active_sessions(repo_root, id: id, cli: cli)
  return nil unless sessions.length == 1

  sessions.first
end

.registry_path(repo_root, id = DEFAULT_ID) ⇒ Object 



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# File 'lib/harnex/core.rb', line 99

def registry_path(repo_root, id = DEFAULT_ID)
  FileUtils.mkdir_p(SESSIONS_DIR)
  File.join(SESSIONS_DIR, "#{session_file_slug(repo_root, id)}.json")
end

.repo_key(repo_root) ⇒ Object 



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# File 'lib/harnex/core.rb', line 40

def repo_key(repo_root)
  Digest::SHA256.hexdigest(repo_root)[0, 16]
end

.resolve_repo_root(path = Dir.pwd) ⇒ Object 



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# File 'lib/harnex/core.rb', line 33

def resolve_repo_root(path = Dir.pwd)
  output, status = Open3.capture2("git", "rev-parse", "--show-toplevel", chdir: path)
  status.success? ? output.strip : File.expand_path(path)
rescue StandardError
  File.expand_path(path)
end

.session_cli(session) ⇒ Object 



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# File 'lib/harnex/core.rb', line 264

def session_cli(session)
  (session["cli"] || Array(session["command"]).first).to_s
end

.session_file_slug(repo_root, id) ⇒ Object 



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# File 'lib/harnex/core.rb', line 116

def session_file_slug(repo_root, id)
  slug = id_key(id)
  slug = "default" if slug.empty?
  "#{repo_key(repo_root)}--#{slug}"
end

.tmux_pane_for_pid(pid) ⇒ Object 



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# File 'lib/harnex/core.rb', line 168

def tmux_pane_for_pid(pid)
  target_pid = Integer(pid)
  stdout, status = Open3.capture2(
    "tmux", "list-panes", "-a", "-F",
    "\#{pane_id}\t\#{pane_pid}\t\#{session_name}\t\#{window_name}"
  )
  return nil unless status.success?

  panes = stdout.each_line.filter_map do |line|
    pane_id, pane_pid, session_name, window_name = line.chomp.split("\t", 4)
    next if pane_id.to_s.empty?

    {
      target: pane_id,
      pane_id: pane_id,
      pane_pid: pane_pid.to_i,
      session_name: session_name,
      window_name: window_name
    }
  end

  pane_pids = panes.map { |p| p[:pane_pid] }.to_set

  # Direct match first
  matches = panes.select { |p| p[:pane_pid] == target_pid }

  # If no direct match, walk up the process tree from target_pid
  # to find an ancestor that is a tmux pane root process.
  if matches.empty?
    ancestor = parent_pid(target_pid)
    while ancestor && ancestor > 1
      if pane_pids.include?(ancestor)
        matches = panes.select { |p| p[:pane_pid] == ancestor }
        break
      end
      ancestor = parent_pid(ancestor)
    end
  end

  return nil unless matches.length == 1

  result = matches.first
  result.delete(:pane_pid)
  result
rescue ArgumentError, Errno::ENOENT
  nil
end

.write_registry(path, payload) ⇒ Object 



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# File 'lib/harnex/core.rb', line 226

def write_registry(path, payload)
  tmp = "#{path}.tmp.#{Process.pid}"
  File.write(tmp, JSON.pretty_generate(payload))
  File.rename(tmp, path)
end