gembag.rb

#!/usr/bin/env ruby

require "logstash/environment"

# set gem paths here to help find the required gems below
ENV["GEM_PATH"] = LogStash::Environment.gem_home
ENV["GEM_HOME"] = LogStash::Environment.gem_home

require "rubygems/specification"
require "rubygems/commands/install_command"
require "logstash/JRUBY-PR1448" if RUBY_PLATFORM == "java" && Gem.win_platform?


def install_gem(name, requirement, target)
  puts "Fetching and installing gem: #{name} (#{requirement})"

  installer = Gem::Commands::InstallCommand.new
  installer.options[:generate_rdoc] = false
  installer.options[:generate_ri] = false
  installer.options[:version] = requirement
  installer.options[:args] = [name]
  installer.options[:install_dir] = target

  # ruby 2.0.0 / rubygems 2.x; disable documentation generation
  installer.options[:document] = []
  begin
    installer.execute
  rescue Gem::SystemExitException => e
    if e.exit_code != 0
      puts "Installation of #{name} failed"
      raise
    end
  end
end # def install_gem

# Ensure bundler is available.
begin
  gem("bundler", ">=1.7.3")
rescue Gem::LoadError => e
  install_gem("bundler", ">= 1.7.3", LogStash::Environment.gem_home)
end

require "bundler/cli"

# Monkeypatch bundler to write a .lock file specific to the version of ruby.
# This keeps MRI/JRuby/RBX from conflicting over the Gemfile.lock updates
module Bundler
  module SharedHelpers
    def default_lockfile
      ruby = "#{LogStash::Environment.ruby_engine}-#{LogStash::Environment.gem_ruby_version}"
      Pathname.new("#{default_gemfile}.#{ruby}.lock")
    end
  end
end

if LogStash::Environment.ruby_engine == "rbx"
  begin
    gem("rubysl")
  rescue Gem::LoadError => e
    install_gem("rubysl", ">= 0", LogStash::Environment.gem_home)
  end
end

# Try installing a few times in case we hit the "bad_record_mac" ssl error during installation.
10.times do
  begin
    Bundler::CLI.start(["install", "--gemfile=#{LogStash::Environment::GEMFILE_PATH}", "--path", LogStash::Environment::BUNDLE_DIR, "--standalone", "--clean", "--without", "development"])
    break
  rescue Gem::RemoteFetcher::FetchError => e
    puts e.message
    puts e.backtrace.inspect
    sleep 5 #slow down a bit before retry
  end
end