Class: ClaudeCodeSDK::Transport::SubprocessCLI

Inherits:
Base
  • Object
show all
Defined in:
lib/claude_code_sdk/transport/subprocess_cli.rb

Constant Summary collapse

BUFFER_SIZE =

1MB

1024 * 1024
STDERR_TIMEOUT =

seconds

5

Instance Method Summary collapse

Constructor Details

#initialize(prompt:, options: nil) ⇒ SubprocessCLI

Returns a new instance of SubprocessCLI.



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# File 'lib/claude_code_sdk/transport/subprocess_cli.rb', line 13

def initialize(prompt:, options: nil)
  @prompt = prompt
  @options = options || Options.new
  @process = nil
  @stdin = nil
  @stdout = nil
  @stderr = nil
  @wait_thread = nil
end

Instance Method Details

#connect ⇒ Object 



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# File 'lib/claude_code_sdk/transport/subprocess_cli.rb', line 23

def connect
  return if @connected

  cli_path = find_cli_path
  raise CLINotFoundError.new(cli_path: cli_path) unless cli_path

  args = @options.to_cli_args
  args.push("--print", @prompt) # Add prompt after --print

  command = [cli_path] + args
  puts "[DEBUG] Command: #{command.join(" ")}" if ENV["DEBUG"]

  env = { "ANTHROPIC_API_KEY" => ENV.fetch("ANTHROPIC_API_KEY", nil) }
  env["CLAUDE_CODE_ENTRYPOINT"] = "sdk-ruby"

  popen_options = { chdir: @options.cwd }.compact
  @stdin, @stdout, @stderr, @wait_thread = Open3.popen3(env, *command, **popen_options)
  @stdin.close # Close stdin since we pass all data via args
  @connected = true
rescue Errno::ENOENT
  raise CLINotFoundError.new("Claude Code CLI not found", cli_path: cli_path)
end

#connected? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/claude_code_sdk/transport/subprocess_cli.rb', line 66

def connected?
  @connected && @wait_thread&.alive?
rescue Errno::ESRCH
  false
end

#disconnect ⇒ Object 



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# File 'lib/claude_code_sdk/transport/subprocess_cli.rb', line 46

def disconnect
  return unless @connected

  @stdin&.close unless @stdin&.closed?
  @stdout&.close unless @stdout&.closed?
  @stderr&.close unless @stderr&.closed?

  if @wait_thread&.alive?
    begin
      Process.kill("TERM", @wait_thread.pid)
      @wait_thread.join(5)
    rescue Errno::ESRCH
      # Process already finished
    end
  end

  @process = nil
  @connected = false
end

#receive_messages ⇒ Object 



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# File 'lib/claude_code_sdk/transport/subprocess_cli.rb', line 72

def receive_messages
  connect unless @connected

  json_buffer = ""

  # Read streaming JSON from stdout
  puts "[DEBUG] Reading streaming JSON..." if ENV["DEBUG"]

  begin
    @stdout.each_line do |line|
      line_str = line.strip
      next if line_str.empty?

      puts "[DEBUG] Read line: #{line_str}" if ENV["DEBUG"]

      json_buffer += line_str

      begin
        data = JSON.parse(json_buffer, symbolize_names: true)
        json_buffer = ""
        puts "[DEBUG] Parsed message: #{data[:type]}" if ENV["DEBUG"]
        yield data
      rescue JSON::ParserError
        # Continue accumulating until we have valid JSON
        next
      end
    end
  rescue IOError => e
    puts "[DEBUG] IOError reading stdout: #{e.message}" if ENV["DEBUG"]
  end

  # Handle process completion
  puts "[DEBUG] Waiting for process to complete..." if ENV["DEBUG"]
  @wait_thread.join
  exit_status = @wait_thread.value.exitstatus

  puts "[DEBUG] Process exited with status: #{exit_status}" if ENV["DEBUG"]

  unless exit_status.zero?
    stderr_output = @stderr.read
    puts "[DEBUG] stderr: #{stderr_output}" if ENV["DEBUG"]
    raise ProcessError.new(
      "Claude Code process failed",
      exit_code: exit_status,
      stderr: stderr_output
    )
  end
ensure
  disconnect
end