Method: Pkg::Util::Net.remote_execute

Defined in:
lib/packaging/util/net.rb

.remote_execute(target_host, command, user_options = {}) ⇒ Object 



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# File 'lib/packaging/util/net.rb', line 64

def remote_execute(target_host, command, user_options = {})
  option_defaults = {
    capture_output: false,
    extra_options: '',
    fail_fast: true,
    trace: false
  }
  options = option_defaults.merge(user_options)

  ssh = Pkg::Util::Tool.check_tool('ssh')

  # we pass some pretty complicated commands in via ssh. We need this to fail
  # if any part of the remote ssh command fails.
  shell_flags = ''
  shell_flags += 'set -e;' if options[:fail_fast]
  shell_flags += 'set -x;' if options[:trace]
  shell_commands = "#{shell_flags}#{command}"

  remote_command = "#{ssh} #{options[:extra_options]} -t #{target_host} " +
                   "'#{shell_commands.gsub("'", "'\\\\''")}'"

  # This is NOT a good way to support this functionality.
  if ENV['DRYRUN']
    puts "[DRY-RUN] Executing '#{command}' on #{target}"
    puts "[DRY-RUN] #{cmd}"
    return ''
  end

  # We're forced to make different calls depending on the capture_output option
  # because something about our #capture3 method screws up gpg. This should
  # be untangled.
  if options[:capture_output]
    stdout, stderr, exitstatus = Pkg::Util::Execution.capture3(remote_command)
    Pkg::Util::Execution.success?(exitstatus) or
      raise "Remote ssh command (\"#{remote_command}\") failed."
    return stdout, stderr
  end

  # Pkg::Util::Execution.capture3 reports its command but Kernel.system does not
  # Let's print it out for some amount of consistency.
  puts "Remote Execute: '#{remote_command}'"
  Kernel.system(remote_command)
  Pkg::Util::Execution.success? or
    raise "Remote ssh command (\"#{remote_command}\") failed."
end