Abstract base class for text mode installers. Used by passenger-install-apache2-module and passenger-install-nginx-module.
Subclasses must at least implement the run_steps method which handles the installation itself.
Usage:
installer = ConcereteInstallerClass.new(options...) installer.run
Create an AbstractInstaller. All options will be stored as instance variables, for example:
installer = AbstractInstaller.new(:foo => "bar") installer.instance_variable_get(:"@foo") # => "bar"
# File lib/phusion_passenger/abstract_installer.rb, line 58 def initialize(options = {}) @stdout = STDOUT @stderr = STDERR options.each_pair do |key, value| instance_variable_set(:"@#{key}", value) end end
Start the installation by calling the install! method.
# File lib/phusion_passenger/abstract_installer.rb, line 67 def run before_install run_steps return true rescue Abort puts return false rescue SignalException, SystemExit raise rescue PlatformInfo::RuntimeError => e new_screen puts "<red>An error occurred</red>" puts puts e.message exit 1 rescue Exception => e show_support_options_for_installer_bug(e) exit 2 ensure after_install end
# File lib/phusion_passenger/abstract_installer.rb, line 111 def after_install STDOUT.write(Utils::AnsiColors::RESET) STDOUT.flush end
# File lib/phusion_passenger/abstract_installer.rb, line 106 def before_install STDOUT.write(Utils::AnsiColors::DEFAULT_TERMINAL_COLOR) STDOUT.flush end
# File lib/phusion_passenger/abstract_installer.rb, line 128 def check_dependencies(show_new_screen = true) new_screen if show_new_screen puts "<banner>Checking for required software...</banner>" puts require 'phusion_passenger/platform_info/depcheck' specs, ids = dependencies runner = PlatformInfo::Depcheck::ConsoleRunner.new specs.each do |spec| PlatformInfo::Depcheck.load(spec) end ids.each do |id| runner.add(id) end if runner.check_all return true else puts puts "<red>Some required software is not installed.</red>" puts "But don't worry, this installer will tell you how to install them.\n" puts "<b>Press Enter to continue, or Ctrl-C to abort.</b>" if PhusionPassenger.originally_packaged? wait else wait(10) end line puts puts "<banner>Installation instructions for required software</banner>" puts runner.missing_dependencies.each do |dep| puts " * To install <yellow>#{dep.name}</yellow>:" puts " #{dep.install_instructions}" puts end puts "If the aforementioned instructions didn't solve your problem, then please take" puts "a look at the Users Guide:" puts puts " <yellow>#{users_guide_path}</yellow>" puts " <yellow>#{users_guide_url}</yellow>" return false end end
# File lib/phusion_passenger/abstract_installer.rb, line 199 def check_directory_accessible_by_web_server return true if PhusionPassenger.natively_packaged? inaccessible_directories = [] list_parent_directories(PhusionPassenger.source_root).each do |path| if !world_executable?(path) inaccessible_directories << path end end if !inaccessible_directories.empty? new_screen render_template 'installer_common/world_inaccessible_directories', :directories => inaccessible_directories wait end end
# File lib/phusion_passenger/abstract_installer.rb, line 179 def check_gem_install_permission_problems return true if PhusionPassenger.natively_packaged? begin require 'rubygems' rescue LoadError return true end if Process.uid != 0 && PhusionPassenger.source_root =~ /^#{Regexp.escape home_dir}\// && PhusionPassenger.source_root =~ /^#{Regexp.escape Gem.dir}\// && File.stat(PhusionPassenger.source_root).uid == 0 new_screen render_template 'installer_common/gem_install_permission_problems' return false else return true end end
# File lib/phusion_passenger/abstract_installer.rb, line 175 def check_whether_os_is_broken # No known broken OSes at the moment. end
# File lib/phusion_passenger/abstract_installer.rb, line 215 def check_whether_system_has_enough_ram(required = 1024) begin meminfo = File.read("/proc/meminfo") if meminfo =~ /^MemTotal: *(\d+) kB$/ ram_mb = $1.to_i / 1024 if meminfo =~ /^SwapTotal: *(\d+) kB$/ swap_mb = $1.to_i / 1024 else swap_mb = 0 end end rescue Errno::ENOENT, Errno::EACCES # Don't do anything on systems without memory information. ram_mb = nil swap_mb = nil end if ram_mb && swap_mb && ram_mb + swap_mb < required new_screen render_template 'installer_common/low_amount_of_memory_warning', :required => required, :current => ram_mb + swap_mb, :ram => ram_mb, :swap => swap_mb, :doc_path => users_guide_path, :doc_url => users_guide_url wait end end
# File lib/phusion_passenger/abstract_installer.rb, line 124 def dependencies return [[], []] end
# File lib/phusion_passenger/abstract_installer.rb, line 417 def download(url, output, options = {}) if options[:use_cache] && cache_dir = PhusionPassenger.download_cache_dir basename = url.sub(/.*\//, '') if File.exist?("#{cache_dir}/#{basename}") puts "Copying #{basename} from #{cache_dir}..." FileUtils.cp("#{cache_dir}/#{basename}", output) return true end end args = [] if PlatformInfo.find_command("wget") if options[:cacert] args << "--ca-certificate=#{options[:cacert]}" end return sh("wget", "--tries=3", "-O", output, url, *args) else if options[:cacert] args << "--cacert" args << options[:cacert] end return sh("curl", url, "-f", "-L", "-o", output, *args) end end
# File lib/phusion_passenger/abstract_installer.rb, line 375 def home_dir Etc.getpwuid(Process.uid).dir end
# File lib/phusion_passenger/abstract_installer.rb, line 97 def interactive? return !@auto end
# File lib/phusion_passenger/abstract_installer.rb, line 306 def line puts "--------------------------------------------" end
# File lib/phusion_passenger/abstract_installer.rb, line 442 def list_parent_directories(dir) dirs = [] components = File.expand_path(dir).split(File::SEPARATOR) components.shift # Remove leading / components.size.times do |i| dirs << File::SEPARATOR + components[0 .. i].join(File::SEPARATOR) end return dirs.reverse end
# File lib/phusion_passenger/abstract_installer.rb, line 300 def new_screen puts line puts end
# File lib/phusion_passenger/abstract_installer.rb, line 101 def non_interactive? return !interactive? end
# File lib/phusion_passenger/abstract_installer.rb, line 277 def print(text) @stdout.write(Utils::AnsiColors.ansi_colorize(text)) @stdout.flush end
# File lib/phusion_passenger/abstract_installer.rb, line 310 def prompt(message, default_value = nil) done = false while !done print "#{message}: " if non_interactive? && default_value puts default_value return default_value end begin result = STDIN.readline rescue EOFError exit 2 end result.strip! if result.empty? if default_value result = default_value done = true else done = !block_given? || yield(result) end else done = !block_given? || yield(result) end end return result rescue Interrupt raise Abort end
# File lib/phusion_passenger/abstract_installer.rb, line 342 def prompt_confirmation(message) result = prompt("#{message} [y/n]") do |value| if value.downcase == 'y' || value.downcase == 'n' true else puts_error "Invalid input '#{value}'; please enter either 'y' or 'n'." false end end return result.downcase == 'y' rescue Interrupt raise Abort end
# File lib/phusion_passenger/abstract_installer.rb, line 282 def puts(text = nil) if text @stdout.puts(Utils::AnsiColors.ansi_colorize(text.to_s)) else @stdout.puts end @stdout.flush end
# File lib/phusion_passenger/abstract_installer.rb, line 291 def puts_error(text) @stderr.puts(Utils::AnsiColors.ansi_colorize("<red>#{text}</red>")) @stderr.flush end
# File lib/phusion_passenger/abstract_installer.rb, line 399 def rake(*args) require 'phusion_passenger/platform_info/ruby' if !PlatformInfo.rake_command puts_error 'Cannot find Rake.' raise Abort end sh("#{PlatformInfo.rake_command} #{args.join(' ')}") end
# File lib/phusion_passenger/abstract_installer.rb, line 408 def rake!(*args) require 'phusion_passenger/platform_info/ruby' if !PlatformInfo.rake_command puts_error 'Cannot find Rake.' raise Abort end sh!("#{PlatformInfo.rake_command} #{args.join(' ')}") end
# File lib/phusion_passenger/abstract_installer.rb, line 296 def render_template(name, options = {}) puts ConsoleTextTemplate.new({ :file => name }, options).result end
# File lib/phusion_passenger/abstract_installer.rb, line 380 def sh(*args) puts "# #{args.join(' ')}" result = system(*args) if result return true elsif $?.signaled? && $?.termsig == Signal.list["INT"] raise Interrupt else return false end end
# File lib/phusion_passenger/abstract_installer.rb, line 392 def sh!(*args) if !sh(*args) puts_error "*** Command failed: #{args.join(' ')}" raise CommandError end end
# File lib/phusion_passenger/abstract_installer.rb, line 244 def show_support_options_for_installer_bug(e) # We do not use template rendering here. Since we've determined that there's # a bug, *anything* may be broken, so we use the safest codepath to ensure that # the user sees the proper messages. begin line @stderr.puts "*** EXCEPTION: #{e} (#{e.class})\n " + e.backtrace.join("\n ") new_screen puts '<red>Oops, something went wrong :-(</red>' puts puts "We're sorry, but it looks like this installer ran into an unexpected problem.\n" + "Please visit the following website for support. We'll do our best to help you.\n\n" + " <b>#{SUPPORT_URL}</b>\n\n" + "When submitting a support inquiry, please copy and paste the entire installler\n" + "output." rescue Exception => e2 # Raise original exception so that it doesn't get lost. raise e end end
# File lib/phusion_passenger/abstract_installer.rb, line 267 def use_stderr old_stdout = @stdout begin @stdout = @stderr yield ensure @stdout = old_stdout end end
# File lib/phusion_passenger/abstract_installer.rb, line 116 def users_guide_path return PhusionPassenger.index_doc_path end
# File lib/phusion_passenger/abstract_installer.rb, line 120 def users_guide_url return INDEX_DOC_URL end
# File lib/phusion_passenger/abstract_installer.rb, line 356 def wait(timeout = nil) if interactive? if timeout require 'timeout' unless defined?(Timeout) begin Timeout.timeout(timeout) do STDIN.readline end rescue Timeout::Error # Do nothing. end else STDIN.readline end end rescue Interrupt raise Abort end
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