Module: ShellClient

Included in:
BashBuildActions::Bash, GitVcsClient::Git
Defined in:
lib/plugins/clients/shell_client.rb

Overview

Manages interaction with the command line

Instance Method Summary collapse

Instance Method Details

#run(cmd, &_block) ⇒ Object

rubocop:disable Metrics/MethodLength, Metrics/AbcSize:



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# File 'lib/plugins/clients/shell_client.rb', line 7

def run(cmd, &_block)
  result = OpenStruct.new stdout: [], stderr: [], stdin: []
  threads = []

  Open3.popen3(cmd) do |stdin, stdout, stderr, thread|
    threads << Thread.new do
      until (line_out = stdout.gets).nil?
        line_out = line_out.strip # strip! causes race conditions
        result[:stdout] << line_out
        yield line_out, nil, thread if block_given?
      end
    end

    threads << Thread.new do
      until (line_err = stderr.gets).nil?
        line_err = line_err.strip # strip! causes race conditions
        result[:stderr] << line_err
        yield nil, line_err, thread  if block_given?
      end
    end

    # STDIN thread will be killed not joined
    Thread.new do
      while thread.alive?
        line_in = $stdin.gets
        result[:stdin] << line_in.strip
        stdin.puts line_in
      end
    end

    threads << thread
    threads.each(&:join)

    result[:exitstatus] = thread.value.exitstatus
    result[:pid] = thread.value.pid
    result[:success?] = thread.value.success?
  end
  result
end