Class: Hotdog::Commands::Ssh

Inherits:
Search show all
Defined in:
lib/hotdog/commands/ssh.rb

Constant Summary

Constants inherited from BaseCommand

BaseCommand::MASK_DATABASE, BaseCommand::MASK_QUERY, BaseCommand::PERSISTENT_DB

Instance Attribute Summary

Attributes inherited from Search

#remote_command

Attributes inherited from BaseCommand

#application, #logger, #options

Instance Method Summary collapse

Methods inherited from Search

#evaluate, #get_hosts_with_search_tags, #parse, #parse_options

Methods inherited from BaseCommand

#execute, #fixed_string?, #initialize, #parse_options, #reload

Constructor Details

This class inherits a constructor from Hotdog::Commands::BaseCommand

Instance Method Details

#define_options(optparse, options = {}) ⇒ Object 



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# File 'lib/hotdog/commands/ssh.rb', line 11

def define_options(optparse, options={})
  options[:index] = nil
  options[:options] = []
  options[:user] = nil
  options[:port] = nil
  options[:identity_file] = nil
  options[:forward_agent] = false

  optparse.on("-n", "--index INDEX", "Use this index of host if multiple servers are found", Integer) do |index|
    options[:index] = index
  end
  optparse.on("-o SSH_OPTION", "Passes this string to ssh command through shell. This option may be given multiple times") do |option|
    options[:options] += [option]
  end
  optparse.on("-i SSH_IDENTITY_FILE", "SSH identity file path") do |path|
    options[:identity_file] = path
  end
  optparse.on("-A", "Enable agent forwarding", TrueClass) do |b|
    options[:forward_agent] = b
  end
  optparse.on("-p PORT", "Port of the remote host", Integer) do |port|
    options[:port] = port
  end
  optparse.on("-u SSH_USER", "SSH login user name") do |user|
    options[:user] = user
  end
  optparse.on("-v", "--verbose", "Enable verbose ode") do |v|
    options[:verbose] = v
  end
end

#run(args = [], options = {}) ⇒ Object 



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# File 'lib/hotdog/commands/ssh.rb', line 42

def run(args=[], options={})
  expression = args.join(" ").strip
  if expression.empty?
    # return everything if given expression is empty
    expression = "*"
  end

  begin
    node = parse(expression)
  rescue Parslet::ParseFailed => error
    STDERR.puts("syntax error: " + error.cause.ascii_tree)
    exit(1)
  end

  result0 = evaluate(node, self)
  if 0 < result0.length
    if result0.length == 1
      exec_command([result0.first], options)
    else
      if options[:index] and options[:index] < result0.length
        exec_command([result0[options[:index]]], options)
      else
        result, fields = get_hosts_with_search_tags(result0, node)

        # add "index" field
        result = result.each_with_index.map { |host, i| [i] + host }
        fields = ["index"] + fields

        STDERR.print(format(result, fields: fields))
        logger.info("found %d host(s)." % result.length)
        exit(1)
      end
    end
  else
    STDERR.puts("no match found: #{expression}")
    exit(1)
  end
  exit(127)
end