Class: Runner

Inherits:
Object
  • Object
show all
Extended by:
Delegation
Defined in:
lib/runner.rb

Defined Under Namespace

Classes: CommandFailed

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Delegation

delegate

Constructor Details

#initialize(logger = nil) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/runner.rb', line 9

def initialize(logger=nil)
  @logger = logger
end

Instance Attribute Details

#logger ⇒ Object (readonly)

Returns the value of attribute logger.



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# File 'lib/runner.rb', line 13

def logger
  @logger
end

Instance Method Details

#shell(cmd, opts = {}) ⇒ Object 



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# File 'lib/runner.rb', line 17

def shell cmd, opts={}
  cmd = cmd.strip
  
  # As a default, escape from the bundler jail:
  environment = opts[:environment] ||= {}
  environment['RUBYOPT'] = ''
  environment['BUNDLE_GEMFILE'] = ''
  environment['RAILS_ENV'] = 'production'
  environment['RACK_ENV'] = 'production'
  
  debug "Executing '#{cmd}'."
  command = shell_out(cmd, opts)
  
  command.run_command
  command.error!
  
  return command.stdout
rescue Mixlib::ShellOut::ShellCommandFailed => error
  warn "Failed command (exit #{command.exitstatus}): #{cmd} "
  
  lines = command.stderr.lines.to_a
  warn "STDERR: #{lines.size} lines of output:" unless lines.empty?
  lines.each_with_index do |line, idx|
    symbol = idx == lines.size-1 ? '`-' : '|-'
    debug " #{symbol} #{line.chomp}"
  end

  lines = command.stdout.lines.to_a
  warn "STDOUT: #{lines.size} lines of output:" unless lines.empty?
  lines.each_with_index do |line, idx|
    symbol = idx == lines.size-1 ? '`-' : '|-'
    debug " #{symbol} #{line.chomp}"
  end
  
  raise CommandFailed, "'#{cmd}' exited with #{command.exitstatus}. (see log for details)"
end

#shell_as(user, cmd, opts = {}) ⇒ Object 



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# File 'lib/runner.rb', line 53

def shell_as user, cmd, opts={}
  shell cmd, opts.merge(user: user)
end

#shell_out(*args) ⇒ Object 



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# File 'lib/runner.rb', line 57

def shell_out(*args)
  Mixlib::ShellOut.new(*args)
end