Class: Omnibus::Ctl

Inherits:
Object
  • Object
show all
Defined in:
lib/omnibus-ctl.rb,
lib/omnibus-ctl/version.rb

Constant Summary collapse

SV_COMMAND_NAMES = 
%w{status up down once pause cont hup alarm int quit
term kill start stop restart shutdown force-stop
force-reload force-restart force-shutdown check usr1 usr2}.freeze
VERSION = 
"0.6.4".freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, merge_service_commands = true, disp_name = nil) ⇒ Ctl

Returns a new instance of Ctl.



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# File 'lib/omnibus-ctl.rb', line 40

def initialize(name, merge_service_commands = true, disp_name = nil)
  @name = name
  @service_commands = merge_service_commands
  @display_name = disp_name || name
  @base_path = "/opt/#{name}"
  @sv_path = File.join(@base_path, "sv")
  @service_path = File.join(@base_path, "service")
  @log_path = "/var/log/#{name}"
  @data_path = "/var/opt/#{name}"
  @etc_path = "/etc/#{name}"
  @log_exclude = "(config|lock|@|bz2|gz|gzip|tbz2|tgz|txz|xz|zip)"
  @log_path_exclude = ["*/sasl/*"]
  @fh_output = STDOUT
  @kill_users = []
  @verbose = false
  @quiet = false
  @exe_name = File.basename($0)
  @force_exit = false
  @global_pre_hooks = {}

  # TODO(ssd) 2017-03-28: Set SVDIR explicitly. Once we fix a bug
  # in our debian support, where we rely on system-installed
  # runit, we can likely change this back to ENV.delete("SVDIR")
  ENV["SVDIR"] = service_path

  # backwards compat command map that does not have categories
  @command_map = {}

  # categoired commands that we want by default
  @category_command_map = {
    "general" => {
      "show-config" => {
        desc: "Show the configuration that would be generated by reconfigure.",
        arity: 1,
      },
      "reconfigure" => {
        desc: "Reconfigure the application.",
        arity: 2,
      },
      "cleanse" => {
        desc: "Delete *all* #{display_name} data, and start from scratch.",
        arity: 2,
      },
      "uninstall" => {
        arity: 1,
        desc: "Kill all processes and uninstall the process supervisor (data will be preserved).",
      },
      "help" => {
        arity: 1,
        desc: "Print this help message.",
      },
    },
  }
  service_command_map = {
    "service-management" => {
      "service-list" => {
        arity: 1,
        desc: "List all the services (enabled services appear with a *.)",
      },
      "status" => {
        desc: "Show the status of all the services.",
        arity: 2,
      },
      "tail" => {
        desc: "Watch the service logs of all enabled services.",
        arity: 2,
      },
      "start" => {
        desc: "Start services if they are down, and restart them if they stop.",
        arity: 2,
      },
      "stop" => {
        desc: "Stop the services, and do not restart them.",
        arity: 2,
      },
      "restart" => {
        desc: "Stop the services if they are running, then start them again.",
        arity: 2,
      },
      "once" => {
        desc: "Start the services if they are down. Do not restart them if they stop.",
        arity: 2,
      },
      "hup" => {
        desc: "Send the services a HUP.",
        arity: 2,
      },
      "term" => {
        desc: "Send the services a TERM.",
        arity: 2,
      },
      "int" => {
        desc: "Send the services an INT.",
        arity: 2,
      },
      "kill" => {
        desc: "Send the services a KILL.",
        arity: 2,
      },
      "graceful-kill" => {
        desc: "Attempt a graceful stop, then SIGKILL the entire process group.",
        arity: 2,
      },
      "usr1" => {
        desc: "Send the services a USR1.",
        arity: 2,
      },
      "usr2" => {
        desc: "Send the services a USR2.",
        arity: 2,
      },
    },
  }
  @category_command_map.merge!(service_command_map) if service_commands?
end

Instance Attribute Details

#backup_dir ⇒ Object (readonly)

Returns the value of attribute backup_dir.



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# File 'lib/omnibus-ctl.rb', line 38

def backup_dir
  @backup_dir
end

#base_path ⇒ Object

Returns the value of attribute base_path.



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# File 'lib/omnibus-ctl.rb', line 34

def base_path
  @base_path
end

#category_command_map ⇒ Object

Returns the value of attribute category_command_map.



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# File 'lib/omnibus-ctl.rb', line 34

def category_command_map
  @category_command_map
end

#command_map ⇒ Object

Returns the value of attribute command_map.



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# File 'lib/omnibus-ctl.rb', line 34

def command_map
  @command_map
end

#data_path ⇒ Object

Returns the value of attribute data_path.



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# File 'lib/omnibus-ctl.rb', line 34

def data_path
  @data_path
end

#display_name ⇒ Object

Returns the value of attribute display_name.



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# File 'lib/omnibus-ctl.rb', line 34

def display_name
  @display_name
end

#etc_path ⇒ Object

Returns the value of attribute etc_path.



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# File 'lib/omnibus-ctl.rb', line 34

def etc_path
  @etc_path
end

#exe_name ⇒ Object (readonly)

Returns the value of attribute exe_name.



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# File 'lib/omnibus-ctl.rb', line 38

def exe_name
  @exe_name
end

#fh_output ⇒ Object

Returns the value of attribute fh_output.



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# File 'lib/omnibus-ctl.rb', line 34

def fh_output
  @fh_output
end

#kill_users ⇒ Object

Returns the value of attribute kill_users.



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# File 'lib/omnibus-ctl.rb', line 34

def kill_users
  @kill_users
end

#log_exclude ⇒ Object

Returns the value of attribute log_exclude.



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# File 'lib/omnibus-ctl.rb', line 34

def log_exclude
  @log_exclude
end

#log_path ⇒ Object

Returns the value of attribute log_path.



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# File 'lib/omnibus-ctl.rb', line 34

def log_path
  @log_path
end

#log_path_exclude ⇒ Object

Returns the value of attribute log_path_exclude.



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# File 'lib/omnibus-ctl.rb', line 34

def log_path_exclude
  @log_path_exclude
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/omnibus-ctl.rb', line 34

def name
  @name
end

#service_path ⇒ Object

Returns the value of attribute service_path.



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# File 'lib/omnibus-ctl.rb', line 34

def service_path
  @service_path
end

#sv_path ⇒ Object

Returns the value of attribute sv_path.



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# File 'lib/omnibus-ctl.rb', line 34

def sv_path
  @sv_path
end

#verbose ⇒ Object

Returns the value of attribute verbose.



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# File 'lib/omnibus-ctl.rb', line 34

def verbose
  @verbose
end

Class Method Details

.to_method_name(name) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 156

def self.to_method_name(name)
  name.gsub(/-/, "_").to_sym
end

Instance Method Details

#add_command(name, description, arity = 1, &block) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 194

def add_command(name, description, arity = 1, &block)
  @command_map[name] = { desc: description, arity: arity }
  self.class.send(:define_method, to_method_name(name).to_sym) { |*args| block.call(*args) }
end

#add_command_under_category(name, category, description, arity = 1, &block) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 199

def add_command_under_category(name, category, description, arity = 1, &block)
  # add new category if it doesn't exist
  @category_command_map[category] ||= {}
  @category_command_map[category][name] = { desc: description, arity: arity }
  self.class.send(:define_method, to_method_name(name).to_sym) { |*args| block.call(*args) }
end

#add_global_pre_hook(name, &block) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 206

def add_global_pre_hook(name, &block)
  method_name = to_method_name("#{name}_global_pre_hook").to_sym
  @global_pre_hooks[name] = method_name
  self.class.send(:define_method, method_name, block)
end

#ask_license_acceptance ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 541

def ask_license_acceptance
  log "To use this software, you must agree to the terms of the software license agreement."

  unless STDIN.tty?
    log "Please view and accept the software license agreement, or pass --accept-license."
    exit(1)
  end

  log "Press any key to continue."
  user_input = STDIN.getch
  user_input << STDIN.getch while STDIN.ready?
  # No need to check for user input

  system("less #{project_license_path}")

  loop do
    log "Type 'yes' to accept the software license agreement, or anything else to cancel."

    user_input = STDIN.gets.chomp.downcase
    case user_input
    when "yes"
      return true
    else
      log "You have not accepted the software license agreement."
      return false
    end
  end
end

#check_license_acceptance(override_accept = false) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 523

def check_license_acceptance(override_accept = false)
  license_guard_file_path = File.join(data_path, ".license.accepted")

  # If the project does not have a license we do not have
  # any license to accept.
  return unless File.exist?(project_license_path)

  unless File.exist?(license_guard_file_path)
    if override_accept || ask_license_acceptance
      FileUtils.mkdir_p(data_path)
      FileUtils.touch(license_guard_file_path)
    else
      log "Please accept the software license agreement to continue."
      exit(1)
    end
  end
end

#cleanse(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 329

def cleanse(*args)
  scary_cleanse_warning(*args)
  cleanup_procs_and_nuke("#{service_path}/* /tmp/opt #{data_path} #{etc_path} #{log_path}", "cleanse")
end

#cleanse_post_hook(*args) ⇒ Object

Data cleanup requirements for external services aren’t met by the standard ‘nuke /var/opt’ behavior - this hook allows each service to perform its own ‘cleanse’ operations.

Your callback for this function should be in the form ‘external_cleanup_#service_name(do_clean) where do_cliean is true if the delete should actually be performed, and false if it’s expected to inform the user how to perform the data cleanup without doing any cleanup itself.



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# File 'lib/omnibus-ctl.rb', line 859

def cleanse_post_hook(*args)
  external_services.each_key do |service_name|
    perform_delete = ARGV.include?("--with-external")
    if perform_delete
      log "Deleting data from external service: #{service_name}"
    end
    send(to_method_name("external_cleanse_#{service_name}"), perform_delete)
  end
end

#cleanup_procs_and_nuke(filestr, calling_method = nil) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 250

def cleanup_procs_and_nuke(filestr, calling_method = nil)
  run_sv_command("stop")

  FileUtils.rm_f("/etc/init/#{name}-runsvdir.conf") if File.exist?("/etc/init/#{name}-runsvdir.conf")
  run_command("egrep -v '#{base_path}/embedded/bin/runsvdir-start' /etc/inittab > /etc/inittab.new && mv /etc/inittab.new /etc/inittab") if File.exist?("/etc/inittab")
  run_command("kill -1 1")

  @backup_dir = Time.now.strftime("/root/#{name}-cleanse-%FT%R")

  FileUtils.mkdir_p("/root") unless File.exist?("/root")
  FileUtils.rm_rf(backup_dir)
  FileUtils.cp_r(etc_path, backup_dir) if File.exist?(etc_path)
  run_command("rm -rf #{filestr}")
  graceful_kill

  log "Terminating processes running under application users. This will take a few seconds."
  run_command("pkill -HUP -u #{kill_users.join(",")}") if kill_users.length > 0
  run_command("pkill -HUP -f 'runsvdir -P #{service_path}'")
  sleep 3
  run_command("pkill -TERM -u #{kill_users.join(",")}") if kill_users.length > 0
  run_command("pkill -TERM -f 'runsvdir -P #{service_path}'")
  sleep 3
  run_command("pkill -KILL -u #{kill_users.join(",")}") if kill_users.length > 0
  run_command("pkill -KILL -f 'runsvdir -P #{service_path}'")

  get_all_services.each do |die_daemon_die|
    run_command("pkill -KILL -f 'runsv #{die_daemon_die}'")
  end
  log "Your config files have been backed up to #{backup_dir}."
  exit! 0
end

#command_post_hook(*args) ⇒ Object

Executes after successful completion of a command If a post-hook provides a numeric return code, it will replace the return/exit of the original command



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# File 'lib/omnibus-ctl.rb', line 806

def command_post_hook(*args)
  command = args.shift
  method = to_method_name("#{command}_post_hook")
  if respond_to?(method)
    send(method, *args)
  end
end

#command_pre_hook(*args) ⇒ Object

If a command has a pre-hook defined we will run it. Otherwise, if it is a run-sv command and the service it refers to is an external service, we will show an error since we can’t control external services from here.

If any pre-hook returns false, it will prevent execution of the command and exit the command with exit code 8.



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# File 'lib/omnibus-ctl.rb', line 785

def command_pre_hook(*args)
  command = args.shift
  method = to_method_name("#{command}_pre_hook")
  if respond_to?(method)
    send(method, *args)
  else
    return true if args.empty?

    if SV_COMMAND_NAMES.include? command
      if service_external? args[0]
        log error_external_service(command, args[0])
        return false
      end
    end
    true
  end
end

#error_external_service(command, service) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 883

def error_external_service(command, service)
  <<EOM
-------------------------------------------------------------------
The service #{service} is running externally and cannot be managed
vi chef-server-ctl.  Please log into #{external_services[service]["vip"]}
to manage it directly.
-------------------------------------------------------------------
EOM
end

#exit!(code) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 212

def exit!(code)
  @force_exit = true
  code
end

#external_services ⇒ Object

Helper function that returns the hash of config hashes that have the key ‘external’ : true in the running config. If none exist it will return an empty hash.



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# File 'lib/omnibus-ctl.rb', line 447

def external_services
  @external_services ||= running_package_config.select { |k, v| v.class == Hash and v["external"] == true }
end

#format_multiline_message(indent, message) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 893

def format_multiline_message(indent, message)
  if message.class == String
    message = message.split("\n")
  end
  spaces = " " * indent
  message.map! { |line| "#{spaces}#{line.strip}" }
  message.join("\n")
end

#get_all_commands_hash ⇒ Object

merges category_command_map and command_map, removing categories



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# File 'lib/omnibus-ctl.rb', line 172

def get_all_commands_hash
  without_categories = {}
  category_command_map.each do |category, commands|
    without_categories.merge!(commands)
  end
  command_map.merge(without_categories)
end

#get_all_services ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 338

def get_all_services
  get_all_services_files.map { |f| File.basename(f) }.sort
end

#get_all_services_files ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 334

def get_all_services_files
  Dir[File.join(sv_path, "*")]
end

#get_pgrp_from_pid(pid) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 221

def get_pgrp_from_pid(pid)
  ps = `which ps`.chomp
  `#{ps} -p #{pid} -o pgrp=`.chomp
end

#get_pids_from_pgrp(pgrp) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 226

def get_pids_from_pgrp(pgrp)
  pgrep = `which pgrep`.chomp
  `#{pgrep} -g #{pgrp}`.split(/\n/).join(" ")
end

#global_service_command_permitted(sv_cmd, service_name) ⇒ Object

if we’re running a global service command (like p-c-c status) across all of the services, there are certain cases where we want to prevent services files that exist in the service directory from being activated. This method is the logic that blocks those services



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# File 'lib/omnibus-ctl.rb', line 376

def global_service_command_permitted(sv_cmd, service_name)
  # For services that have been removed, we only want to
  # them to respond to the stop command. They should not show
  # up in status, and they should not be started.
  if removed_services.include?(service_name)
    return sv_cmd == "stop"
  end

  # For keepalived, we only want it to respond to the status
  # command when running global service commands like p-c-c start
  # and p-c-c stop
  if service_name == "keepalived"
    return sv_cmd == "status"
  end

  # If c-s-c status is called, check to see if the service
  # is hidden supposed to be hidden from the status results
  # (mover for example should be hidden).
  if sv_cmd == "status"
    return !(hidden_services.include?(service_name))
  end

  # All other services respond normally to p-c-c * commands
  true
end

#graceful_kill(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 589

def graceful_kill(*args)
  service = args[1]
  exit_status = 0
  get_all_services.each do |service_name|
    next if !service.nil? && service_name != service

    if service_enabled?(service_name)
      pidfile = "#{sv_path}/#{service_name}/supervise/pid"
      pid = File.read(pidfile).chomp if File.exist?(pidfile)
      if pid.nil? || !is_integer?(pid)
        log "could not find #{service_name} runit pidfile (service already stopped?), cannot attempt SIGKILL..."
        status = run_command("#{base_path}/init/#{service_name} stop")
        exit_status = status.exitstatus if exit_status == 0 && !status.success?
        next
      end
      pgrp = get_pgrp_from_pid(pid)
      if pgrp.nil? || !is_integer?(pgrp)
        log "could not find pgrp of pid #{pid} (not running?), cannot attempt SIGKILL..."
        status = run_command("#{base_path}/init/#{service_name} stop")
        exit_status = status.exitstatus if exit_status == 0 && !status.success?
        next
      end
      run_command("#{base_path}/init/#{service_name} stop")
      pids = get_pids_from_pgrp(pgrp)
      unless pids.empty?
        log "found stuck pids still running in process group: #{pids}, sending SIGKILL" unless pids.empty?
        sigkill_pgrp(pgrp)
      end
    else
      log "#{service_name} disabled, not stopping"
      exit_status = 1
    end
  end
  exit! exit_status
end

#help(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 625

def help(*args)
  log "#{exe_name}: command (subcommand)\n"
  command_map.keys.sort.each do |command|
    log command
    log "  #{command_map[command][:desc]}"
  end
  category_command_map.each do |category, commands|
    # Remove "-" and replace with spaces in category and capalize for output
    category_string = category.gsub("-", " ").split.map(&:capitalize).join(" ")
    log "#{category_string} Commands:\n"

    # Print each command in this category
    commands.keys.sort.each do |command|
      log "  #{command}"
      log "    #{commands[command][:desc]}"
    end
  end
  # Help is not an error so exit with 0.  In cases where we display help as a result of an error
  # the framework will handle setting proper exit code.
  exit! 0
end

#hidden_services ⇒ Object

hidden services are configured via the attributes file in the main omnibus cookbook

hidden services are services that we do not want to show up in c-s-c status.



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# File 'lib/omnibus-ctl.rb', line 417

def hidden_services
  # in the case that there is no running_config (the config file does
  # not exist), we don't want to return nil, just return an empty array.
  # worse result with doing that is services that we don't want to show up in
  # c-s-c status will show up.
  running_package_config["hidden_services"] || []
end

#is_integer?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/omnibus-ctl.rb', line 585

def is_integer?(string)
  return true if Integer(string) rescue false
end

#is_option?(arg) ⇒ Boolean

If it begins with a ‘-’, it is an option.

Returns:

  • (Boolean) 


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# File 'lib/omnibus-ctl.rb', line 663

def is_option?(arg)
  arg && arg[0] == "-"
end

#load_file(filepath) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 190

def load_file(filepath)
  eval(IO.read(filepath), nil, filepath, 1) # rubocop: disable Security/Eval
end

#load_files(path) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 184

def load_files(path)
  Dir["#{path}/*.rb"].each do |file|
    load_file(file)
  end
end

#log(msg) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 217

def log(msg)
  fh_output.puts msg
end

#log_external_service_header ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 912

def log_external_service_header
  return if external_services.empty?

  log "-------------------"
  log " External Services "
  log "-------------------"
end

#log_internal_service_header ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 902

def log_internal_service_header
  # Don't decorate output unless we have
  # external services to report on.
  return if external_services.empty?

  log "-------------------"
  log " Internal Services "
  log "-------------------"
end

#package_name ⇒ Object

translate the name from the config to the package name. this is a special case for the private-chef package because it is configured to use the name and directory structure of ‘opscode’, not ‘private-chef’



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# File 'lib/omnibus-ctl.rb', line 429

def package_name
  case @name
  when "opscode"
    "private-chef"
  else
    @name
  end
end

#parse_options(args) ⇒ Object

Set global options and remove them from the args list we pass into commands.



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# File 'lib/omnibus-ctl.rb', line 649

def parse_options(args)
  args.select do |option|
    case option
    when "--quiet", "-q"
      @quiet = true
      false
    when "--verbose", "-v"
      @verbose = true
      false
    end
  end
end

#project_license_path ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 570

def project_license_path
  File.join(base_path, "LICENSE")
end

#reconfigure(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 508

def reconfigure(*args)
  # args being passed to this command does not include the ones that are
  # starting with "-". See #is_option? method. If it is starting with "-"
  # then it is treated as a option and we need to look for them in ARGV.
  check_license_acceptance(ARGV.include?("--accept-license"))

  status = run_chef("#{base_path}/embedded/cookbooks/dna.json")
  if status.success?
    log "#{display_name} Reconfigured!"
    exit! 0
  else
    exit! 1
  end
end

#remove_old_node_state ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 478

def remove_old_node_state
  node_cache_path = "#{base_path}/embedded/nodes/"
  status = run_command("rm -rf #{node_cache_path}")
  unless status.success?
    log "Could not remove cached node state!"
    exit 1
  end
end

#removed_services ⇒ Object

removed services are configured via the attributes file in the main omnibus cookbook



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# File 'lib/omnibus-ctl.rb', line 404

def removed_services
  # in the case that there is no running_config (the config file does
  # not exist), we know that this will be a new server, and we don't
  # have to worry about pre-upgrade services hanging around. We can safely
  # return an empty array when running_config is nil
  running_package_config["removed_services"] || []
end

#retrieve_command(command_to_run) ⇒ Object

retrieves the commmand from either the command_map or the category_command_map, if the command is not found return nil



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# File 'lib/omnibus-ctl.rb', line 670

def retrieve_command(command_to_run)
  if command_map.key?(command_to_run)
    command_map[command_to_run]
  else
    command = nil
    category_command_map.each do |category, commands|
      command = commands[command_to_run] if commands.key?(command_to_run)
    end
    # return the command, or nil if it wasn't found
    command
  end
end

#run(args) ⇒ Object

Previously this would exit immediately with the provided exit code; however this would prevent post-run hooks from continuing Instead, we’ll just track whether a an exit was requested and use that to determine how we exit from ‘run’



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# File 'lib/omnibus-ctl.rb', line 687

def run(args)
  # Ensure Omnibus related binaries are in the PATH
  ENV["PATH"] = [File.join(base_path, "bin"),
                 File.join(base_path, "embedded", "bin"),
                 ENV["PATH"]].join(":")

  command_to_run = args[0]

  ## when --help is run as the command itself, we need to strip off the
  ## `--` to ensure the command maps correctly.
  if command_to_run == "--help"
    command_to_run = "help"
  end

  # This piece of code checks if the argument is an option. If it is,
  # then it sets service to nil and adds the argument into the options
  # argument. This is ugly. A better solution is having a proper parser.
  # But if we are going to implement a proper parser, we might as well
  # port this to Thor rather than reinventing Thor. For now, this preserves
  # the behavior to complain and exit with an error if one attempts to invoke
  # a pcc command that does not accept an argument. Like "help".
  options = args[2..-1] || []
  if is_option?(args[1])
    options.unshift(args[1])
    service = nil
  else
    service = args[1]
  end

  # returns either hash content of command or nil
  command = retrieve_command(command_to_run)
  if command.nil?
    log "I don't know that command."
    if args.length == 2
      log "Did you mean: #{exe_name} #{service} #{command_to_run}?"
    end
    help
    Kernel.exit 1
  end

  if args.length > 1 && command[:arity] != 2
    log "The command #{command_to_run} does not accept any arguments"
    Kernel.exit 2
  end

  parse_options options
  @force_exit = false
  exit_code = 0

  run_global_pre_hooks

  # Filter args to just command and service. If you are loading
  # custom commands and need access to the command line argument,
  # use ARGV directly.
  actual_args = [command_to_run, service].reject(&:nil?)
  if command_pre_hook(*actual_args)
    method_to_call = to_method_name(command_to_run)
    begin
      ret = send(method_to_call, *actual_args)
    rescue SystemExit => e
      @force_exit = true
      ret = e.status
    end
    command_post_hook(*actual_args)
    exit_code = ret unless ret.nil?
  else
    exit_code = 8
    @force_exit = true
  end

  if @force_exit
    Kernel.exit exit_code
  else
    exit_code
  end
end

#run_chef(attr_location, args = "") ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 487

def run_chef(attr_location, args = "")
  if @verbose
    log_level = "-l debug"
  elsif @quiet
    # null formatter is awfully quiet, so let them know we're doing something.
    log "Reconfiguring #{display_name}."
    log_level = "-l fatal -F null"
  else
    log_level = ""
  end
  remove_old_node_state
  cmd = "#{base_path}/embedded/bin/chef-client #{log_level} -z -c #{base_path}/embedded/cookbooks/solo.rb -j #{attr_location}"
  cmd += " #{args}" unless args.empty?
  run_command(cmd)
end

#run_command(command) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 236

def run_command(command)
  system(command)
  $?
end

#run_global_pre_hooks ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 764

def run_global_pre_hooks
  @global_pre_hooks.each do |hook_name, method_name|

    send(method_name)
  rescue => e
    $stderr.puts("Global pre-hook '#{hook_name}' failed with: '#{e.message}'")
    exit(1)

  end
end

#run_sv_command(sv_cmd, service = nil) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 346

def run_sv_command(sv_cmd, service = nil)
  exit_status = 0
  sv_cmd = "1" if sv_cmd == "usr1"
  sv_cmd = "2" if sv_cmd == "usr2"
  if service
    exit_status += run_sv_command_for_service(sv_cmd, service)
  else
    get_all_services.each do |service_name|
      exit_status += run_sv_command_for_service(sv_cmd, service_name) if global_service_command_permitted(sv_cmd, service_name)
    end
  end
  exit! exit_status
end

#run_sv_command_for_service(sv_cmd, service_name) ⇒ Object

run an sv command for a specific service name



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# File 'lib/omnibus-ctl.rb', line 361

def run_sv_command_for_service(sv_cmd, service_name)
  if service_enabled?(service_name)
    status = run_command("#{base_path}/init/#{service_name} #{sv_cmd}")
    status.exitstatus
  else
    log "#{service_name} disabled" if sv_cmd == "status" && verbose
    0
  end
end

#running_config ⇒ Object

returns nil when chef-server-running.json does not exist



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# File 'lib/omnibus-ctl.rb', line 439

def running_config
  @running_config ||= if File.exist?("#{etc_path}/chef-server-running.json")
                        JSON.parse(File.read("#{etc_path}/chef-server-running.json"))
                      end
end

#running_package_config ⇒ Object

Gives package config from the running_config. If there is no running config or if package_name doens’t reference a valid key, this will return an empty hash



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# File 'lib/omnibus-ctl.rb', line 462

def running_package_config
  if (cfg = running_config)
    cfg[package_name.gsub(/-/, "_")] || {}
  else
    {}
  end
end

#running_service_config(service) ⇒ Object

This returns running_config[service].

If there is no running_config or is no matching key it will return nil.



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# File 'lib/omnibus-ctl.rb', line 474

def running_service_config(service)
  running_package_config[service]
end

#scary_cleanse_warning(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 286

def scary_cleanse_warning(*args)
  just_do_it = args.include?("yes")
  with_external = ARGV.include?("--with-external")
  log <<EOM
*******************************************************************
* * * * * * * * * * *       STOP AND READ       * * * * * * * * * *
*******************************************************************
This command will delete *all* local configuration, log, and
variable data associated with #{display_name}.
EOM
  if with_external
    log <<EOM
This will also delete externally hosted #{display_name} data.
This means that any service you have configured as 'external'
will have any #{display_name} permanently deleted.
EOM
  elsif not external_services.empty?
    log <<EOM

Important note: If you also wish to delete externally hosted #{display_name}
data, please hit CTRL+C now and run '#{exe_name} cleanse --with-external'
EOM
  end

  unless just_do_it
    data = with_external ? "local, and remote data" : "and local data"
    log <<EOM

You have 60 seconds to hit CTRL-C before configuration,
logs, #{data} for this application are permanently
deleted.
*******************************************************************

EOM
    begin
      sleep 60
    rescue Interrupt
      log ""
      exit 0
    end
  end
end

#service_commands? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/omnibus-ctl.rb', line 180

def service_commands?
  @service_commands
end

#service_enabled?(service_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/omnibus-ctl.rb', line 342

def service_enabled?(service_name)
  File.symlink?("#{service_path}/#{service_name}")
end

#service_external?(service) ⇒ Boolean

Helper function that returns true if an external service entry exists for the named service

Returns:

  • (Boolean) 


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# File 'lib/omnibus-ctl.rb', line 453

def service_external?(service)
  return false if service.nil?

  external_services.key? service
end

#service_list(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 241

def service_list(*args)
  get_all_services.each do |service_name|
    print "#{service_name}"
    print "*" if service_enabled?(service_name)
    print "\n"
  end
  exit! 0
end

#service_list_post_hook ⇒ Object

Capture external services in the output list as well.



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# File 'lib/omnibus-ctl.rb', line 876

def service_list_post_hook
  log_external_service_header
  external_services.each  do |name, settings|
    log " >  #{name} on #{settings["vip"]}"
  end
end

#service_list_pre_hook ⇒ Object

Add some output headers if we have external services enabled



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# File 'lib/omnibus-ctl.rb', line 870

def service_list_pre_hook
  log_internal_service_header
  true
end

#show_config(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 503

def show_config(*args)
  status = run_chef("#{base_path}/embedded/cookbooks/show-config.json", "-l fatal -F null")
  exit! status.success? ? 0 : 1
end

#sigkill_pgrp(pgrp) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 231

def sigkill_pgrp(pgrp)
  pkill = `which pkill`.chomp
  run_command("#{pkill} -9 -g #{pgrp}")
end

#status_post_hook(service = nil) ⇒ Object

Status gets its own hook because each externalized service will have its own things to do in order to report status. As above, we may also include an output header to show that we’re reporting on external services.

Your callback for this function should be in the form ‘external_status_#service_name(detail_level) where detail_level is :sparse|:verbose :sparse is used when it’s a summary service status list, eg “$appname-ctl status” :verbose is used when the specific service has been named, eg “$appname-ctl status postgresql”



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# File 'lib/omnibus-ctl.rb', line 834

def status_post_hook(service = nil)
  if service.nil?
    log_external_service_header
    external_services.each_key do |service_name|
      status = send(to_method_name("external_status_#{service_name}"), :sparse)
      log status
    end
  else
    # Request verbose status if the service is asked for by name.
    if service_external?(service)
      status = send(to_method_name("external_status_#{service}"), :verbose)
      log status
    end
  end
end

#status_pre_hook(service = nil) ⇒ Object

If we’re listing status for all services and have external services to show, we’ll include an output header to show that we’re reporting internal services



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# File 'lib/omnibus-ctl.rb', line 817

def status_pre_hook(service = nil)
  log_internal_service_header if service.nil?
  true
end

#tail(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 574

def tail(*args)
  # find /var/log -type f -not -path '*/sasl/*' | grep -E -v '(lock|@|tgz|gzip)' | xargs tail --follow=name --retry
  command = "find -L #{log_path}"
  command << "/#{args[1]}" if args[1]
  command << " -type f"
  command << log_path_exclude.map { |path| " -not -path '#{path}'" }.join(" ")
  command << " | grep -E -v '#{log_exclude}' | xargs tail --follow=name --retry"

  system(command)
end

#to_method_name(name) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 160

def to_method_name(name)
  Ctl.to_method_name(name)
end

#uninstall(*args) ⇒ Object 



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# File 'lib/omnibus-ctl.rb', line 282

def uninstall(*args)
  cleanup_procs_and_nuke("/tmp/opt")
end