Module: Bixby::Agent::ShellExec

Included in:
Bixby::Agent
Defined in:
lib/bixby-agent/agent/shell_exec.rb

Instance Method Summary collapse

Instance Method Details

#shell_exec(params) ⇒ CommandResponse

Shell exec a local command with the given params

Parameters:

  • params (Hash) —

    CommandSpec hash

Options Hash (params):

  • :repo (String)
  • :bundle (String)
  • :command (String)
  • :args (String)
  • :stdin (String)
  • :digest (String) —

    Expected bundle digest

  • :env (Hash) —

    Hash of extra ENV key/values to pass to sub-shell

  • :user (String) —

    User to run as

  • :group (String) —

    Group to run as

Returns:

  • (CommandResponse)

Raises:

  • (BundleNotFound) —

    If bundle doesn’t exist or digest does not match

  • (CommandNotFound) —

    If command doesn’t exist



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# File 'lib/bixby-agent/agent/shell_exec.rb', line 26

def shell_exec(params)
  digest = params.delete("digest") || params.delete(:digest)

  spec = CommandSpec.new(params)
  log.debug { "shell_exec:\n" + spec.to_s + "\n" }
  spec.validate(digest)

  cmd = "#{spec.command_file} #{spec.args}"

  # Cleanup the ENV and execute
  old_env = {}
  %W{BUNDLE_BIN_PATH BUNDLE_GEMFILE}.each{ |r|
    old_env[r] = ENV.delete(r) if ENV.include?(r) }

  logger.debug("exec: #{cmd}")
  uid = lookup_id(:uid, spec.user)
  gid = lookup_id(:gid, spec.group)
  shell = Mixlib::ShellOut.new(cmd, :input => spec.stdin,
                                    :env   => reset_env(spec.env, uid),
                                    :user  => uid,
                                    :group => gid)

  shell.run_command

  old_env.each{ |k,v| ENV[k] = v } # reset the ENV

  return CommandResponse.new({ :status => shell.exitstatus,
                               :stdout => shell.stdout,
                               :stderr => shell.stderr })
end