Module: McptaskRailsRunner::Binary

Defined in:
lib/mcptask_rails_runner/binary.rb

Overview

Locates and executes the bundled Go binary.

Constant Summary collapse

GEM_ROOT = 
File.expand_path("../..", __dir__)
SUPPORTED_PLATFORMS = 
%w[
  arm64-darwin
  x86_64-darwin
  arm64-linux
  x86_64-linux
  x64-mingw-ucrt
].freeze

Class Method Summary collapse

Class Method Details

.exec!(*args) ⇒ Object

Replaces the current process, so the binary's exit code and signal handling reach the caller (rake) unchanged.



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# File 'lib/mcptask_rails_runner/binary.rb', line 48

def exec!(*args)
  Kernel.exec(path, *args)
end

.executable_name ⇒ Object 



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# File 'lib/mcptask_rails_runner/binary.rb', line 18

def executable_name
  Gem.win_platform? ? "mcptask_runner.exe" : "mcptask_runner"
end

.path(gem_root: GEM_ROOT) ⇒ Object

Absolute path to the bundled binary. Never resolved through PATH: the binary shares the mcptask_runner name with the legacy gem's rake namespace, and a PATH lookup could pick up a stale or wrong install.

Raises:



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# File 'lib/mcptask_rails_runner/binary.rb', line 25

def path(gem_root: GEM_ROOT)
  override = ENV["MCPTASK_RUNNER_BIN"]
  return override unless override.nil? || override.empty?

  exe = File.join(gem_root, "libexec", executable_name)
  return exe if File.file?(exe)

  raise Error, <<~MSG
    mcptask_runner binary not found at #{exe}.

    The platform gem for #{Gem::Platform.local} was probably not installed.
    Supported platforms: #{SUPPORTED_PLATFORMS.join(', ')}.

    On a supported platform, re-run `bundle install` (and make sure the
    platform is in Gemfile.lock: `bundle lock --add-platform #{Gem::Platform.local}`).
    On an unsupported platform, install the binary from
    https://github.com/jchsoft/mcptask-releases and point the
    MCPTASK_RUNNER_BIN environment variable at it.
  MSG
end