Class: Octosh::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/octosh/cli.rb

Defined Under Namespace

Classes: MODE

Class Method Summary collapse

Class Method Details

.exec_script(hosts, script, user, options) ⇒ Object 



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# File 'lib/octosh/cli.rb', line 149

def self.exec_script(hosts, script, user, options)
  workers = []
  
  hosts.each do |host|
    prompt_for_password(options[:password_prompt], options[:uniform_password])
    exec_user,hostname = ""
    if host.include? '@'
      # USer defined with host, override provided user
      exec_user,hostname = host.split('@')
    else
      exec_user = user
      hostname = host
    end
    worker = Octosh::Worker.new(hostname, exec_user, @password, options)
    workers << worker
  end
  
  Parallel.each(workers, :in_threads => workers.length) do |worker|
    worker.exec_script(script) do |output|
      puts "#{worker.host} -- #{output}"
    end
  end
  
end

.inline_bash(hosts, bash, user, options) ⇒ Object 



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# File 'lib/octosh/cli.rb', line 123

def self.inline_bash(hosts, bash, user, options)
  workers = []
  
  hosts.each do |host|
    prompt_for_password(options[:password_prompt], options[:uniform_password])
    exec_user,hostname = ""
    if host.include? '@'
      # USer defined with host, override provided user
      exec_user,hostname = host.split('@')
    else
      exec_user = user
      hostname = host
    end
    
    worker = Octosh::Worker.new(hostname, exec_user, @password, options)
    workers << worker
  end
  
  Parallel.each(workers, :in_threads => workers.length) do |worker|
    #puts "#{worker.host} -- #{}"
    worker.exec(bash) do |output|
      puts "#{worker.host} -- #{output}"
    end
  end
end

.prompt_for_password(password_prompt, uniform_password, host = "current host") ⇒ Object 



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# File 'lib/octosh/cli.rb', line 110

def self.prompt_for_password(password_prompt, uniform_password, host="current host")
  if password_prompt
    # Password authentication
    if uniform_password and @password.nil?
      # One password for all hosts
      @password = Octosh::Helper.password_prompt("Password: ")
    elsif not uniform_password
      # One password for each host
      @password = Octosh::Helper.password_prompt("Password for #{host}: ")
    end
  end
end

.start ⇒ Object 



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# File 'lib/octosh/cli.rb', line 19

def self.start
  options = {}
  
  # Default configuration
  options[:default_user] = "root"
  options[:password_prompt] = true
  options[:uniform_password] = false
  options[:forward_agent] = false
  options[:interactive] = false

  optparse = OptionParser.new do|opts|
    opts.banner = "Usage: octosh [options] [octo config file]"
    
    opts.on('-c', '--config FILE', 'Octo config file') do |file|
      options[:config] = file
    end
    
    opts.on('-i', '--interactive', 'Interactive shell prompt') do
      options[:interactive] = true
    end
      
    opts.on('-b', '--bash COMMAND', 'Explicitly define a command(s) to run on all hosts (Requires --hosts switch)') do |bash|
      options[:bash] = bash
    end
    
    opts.on('-s', '--script SCRIPT', 'Path to script to run on all hosts (Requires --hosts switch)') do |script|
      options[:script] = script
    end
    
    opts.on('-r', '--hosts USER@HOST,USER@HOST', Array, 'Lists of hosts to use when using inline execution (with -b or -s switches)') do |list|
      options[:hosts] = list
    end
    
    opts.on('-u', '--user USER', 'User to use when a user isn\'t defined in the --hosts list (ie. just IP address)') do |user|
      options[:default_user] = user
    end
    
    opts.on('-p', '--uniform-password', 'Uniform password') do
      options[:uniform_password] = true
    end
    
    opts.on('--forward-agent', 'Forward Agent') do
      options[:forward_agent] = true
    end
    
    opts.on_tail('-h', '--help', 'Display this screen' ) do
      puts opts
      exit
    end
  end.parse!
  
  if not ARGV.empty? and not options[:config]
    puts "Using config file"
    options[:config] = ARGV[0]
    options[:mode] = Octosh::CLI::MODE::CONFIG
  elsif ARGV.empty? and options[:config]
    puts "Using config file"
    options[:mode] = Octosh::CLI::MODE::CONFIG
  elsif not ARGV.empty? and options[:config]
    puts "Two config files specified (#{options[:config]} and #{ARGV[0]}), using explicit config file (#{options[:config]})"
    options[:mode] = Octosh::CLI::MODE::CONFIG
  elsif options[:interactive]
    puts "Interactive mode"
    options[:mode] = Octosh::CLI::MODE::INTERACTIVE
    shell = Octosh::Shell.new(options[:hosts], options)
    shell.start
  elsif (options[:bash] or options[:script]) and options[:hosts]
    puts "Using inline execution"
    options[:mode] = Octosh::CLI::MODE::INLINE
    
    if options[:bash] and options[:script]
      "Error -- Cannot specify both an inline command to run (-b) and a script file (-s)"
      exit
    elsif options[:bash]
      puts "Inline bash"
      self.inline_bash(options[:hosts], options[:bash], options[:default_user], options)
    elsif options[:script]
      puts "Call script on each server"
      self.exec_script(options[:hosts], options[:script], options[:default_user], options)
    else
      "Error -- Something broke"
      exit
    end
      
  else
    puts "Error -- Must either provide an Octo config file or arguments for inline execution (--hosts along with -b or -s)"
    exit
  end

end