Module: Common

Included in:
BuildRunner, DeleteRunner, DeployRunner, InitRunner, ListRunner, OutputRunner, UpdateRunner
Defined in:
lib/wombat/common.rb

Instance Method Summary collapse

Instance Method Details

#audio? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wombat/common.rb', line 176

def audio?
  is_mac? && conf['audio']
end
 


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# File 'lib/wombat/common.rb', line 11

def banner(msg)
  puts "==> #{msg}"
end

#bootstrap_aws ⇒ Object 



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# File 'lib/wombat/common.rb', line 48

def bootstrap_aws
  @workstation_passwd = wombat['workstations']['password']
  rendered = ERB.new(File.read("#{conf['template_dir']}/bootstrap-aws.erb"), nil, '-').result(binding)
  Dir.mkdir("#{conf['packer_dir']}/scripts", 0755) unless File.exist?("#{conf['packer_dir']}/scripts")
  File.open("#{conf['packer_dir']}/scripts/bootstrap-aws.txt", 'w') { |file| file.puts rendered }
  banner("Generated: #{conf['packer_dir']}/scripts/bootstrap-aws.txt")
end

#build_nodes ⇒ Object 



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# File 'lib/wombat/common.rb', line 126

def build_nodes
  build_nodes = {}
  1.upto(wombat['build-nodes']['count'].to_i) do |i|
    build_nodes["build-node-#{i}"] = i
  end
  build_nodes
end

#calculate_templates ⇒ Object 



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# File 'lib/wombat/common.rb', line 184

def calculate_templates
globs = "*.json"
  Dir.chdir(conf['packer_dir']) do
    Array(globs).
      map { |glob| result = Dir.glob("#{glob}"); result.empty? ? glob : result }.
      flatten.
      sort.
      delete_if { |file| file =~ /\.variables\./ }.
      map { |template| template.sub(/\.json$/, '') }
  end
end

#conf ⇒ Object 



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# File 'lib/wombat/common.rb', line 158

def conf
  conf = wombat['conf']
  conf ||= {}
  conf['key_dir'] ||= 'keys'
  conf['cookbook_dir'] ||= 'cookbooks'
  conf['packer_dir'] ||= 'packer'
  conf['log_dir'] ||= 'logs'
  conf['stack_dir'] ||= 'stacks'
  conf['template_dir'] ||= 'templates'
  conf['timeout'] ||= 7200
  conf['audio'] ||= false
  conf
end

#create_infranodes_json ⇒ Object 



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# File 'lib/wombat/common.rb', line 142

def create_infranodes_json
  if File.exists?("#{conf['packer_dir']}/file/infranodes-info.json")
    current_state = JSON(File.read('files/infranodes-info.json'))
  else
    current_state = nil
  end
  return if current_state == infranodes # yay idempotence
  File.open("#{conf['packer_dir']}/files/infranodes-info.json", 'w') do |f|
    f.puts JSON.pretty_generate(infranodes)
  end
end

#duration(total) ⇒ Object 



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# File 'lib/wombat/common.rb', line 23

def duration(total)
  total = 0 if total.nil?
  minutes = (total / 60).to_i
  seconds = (total - (minutes * 60))
  format("%dm%.2fs", minutes, seconds)
end

#gen_ssh_key ⇒ Object 



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# File 'lib/wombat/common.rb', line 94

def gen_ssh_key
  rsa_key = OpenSSL::PKey::RSA.new 2048

  type = rsa_key.ssh_type
  data = [rsa_key.to_blob].pack('m0')

  openssh_format = "#{type} #{data}"

  Dir.mkdir(conf['key_dir'], 0755) unless File.exist?(conf['key_dir'])

  if File.exist?("#{conf['key_dir']}/public.pub") && File.exist?("#{conf['key_dir']}/private.pem")
    puts 'An SSH keypair already exists'
  else
    File.open("#{conf['key_dir']}/public.pub", 'w') { |file| file.puts openssh_format }
    File.open("#{conf['key_dir']}/private.pem", 'w') { |file| file.puts rsa_key.to_pem }
    puts 'SSH Keypair created'
  end
end

#gen_x509_cert(hostname) ⇒ Object 



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# File 'lib/wombat/common.rb', line 56

def gen_x509_cert(hostname)
  rsa_key = OpenSSL::PKey::RSA.new(2048)
  public_key = rsa_key.public_key

  subject = "/C=AU/ST=New South Wales/L=Sydney/O=#{wombat['org']}/OU=wombats/CN=#{wombat['domain_prefix']}#{hostname}.#{wombat['domain']}"

  cert = OpenSSL::X509::Certificate.new
  cert.subject = cert.issuer = OpenSSL::X509::Name.parse(subject)
  cert.not_before = Time.now
  cert.not_after = Time.now + 365 * 24 * 60 * 60
  cert.public_key = public_key
  cert.serial = 0x0
  cert.version = 2

  ef = OpenSSL::X509::ExtensionFactory.new
  ef.subject_certificate = cert
  ef.issuer_certificate = cert
  cert.extensions = [
    ef.create_extension('basicConstraints', 'CA:TRUE', true),
    ef.create_extension('subjectKeyIdentifier', 'hash'),
    # ef.create_extension("keyUsage", "cRLSign,keyCertSign", true),
  ]
  cert.add_extension ef.create_extension('authorityKeyIdentifier',
                                         'keyid:always,issuer:always')

  cert.sign(rsa_key, OpenSSL::Digest::SHA256.new)
  
  Dir.mkdir(conf['key_dir'], 0755) unless File.exist?(conf['key_dir'])

  if File.exist?("#{conf['key_dir']}/#{hostname}.crt") && File.exist?("#{conf['key_dir']}/#{hostname}.key")
    puts "An x509 certificate already exists for #{hostname}"
  else
    File.open("#{conf['key_dir']}/#{hostname}.crt", 'w') { |file| file.puts cert.to_pem }
    File.open("#{conf['key_dir']}/#{hostname}.key", 'w') { |file| file.puts rsa_key.to_pem }
    puts "Certificate created for #{wombat['domain_prefix']}#{hostname}.#{wombat['domain']}"
  end
end

#info(msg) ⇒ Object 



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# File 'lib/wombat/common.rb', line 15

def info(msg)
  puts "    #{msg}"
end

#infranodes ⇒ Object 



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# File 'lib/wombat/common.rb', line 118

def infranodes
  unless wombat['infranodes'].nil?
    wombat['infranodes'].sort
  else
    puts 'No infranodes listed in wombat.yml'
  end
end

#is_mac? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wombat/common.rb', line 172

def is_mac?
  (/darwin/ =~ RUBY_PLATFORM) != nil
end

#linux ⇒ Object 



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# File 'lib/wombat/common.rb', line 154

def linux
  wombat['linux'].nil? ? 'ubuntu' : wombat['linux']
end

#lock ⇒ Object 



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# File 'lib/wombat/common.rb', line 39

def lock
  if !File.exists?('wombat.lock')
    warn('No wombat.lock found')
    return 1
  else
    JSON.parse(File.read('wombat.lock'))
  end
end

#logs ⇒ Object 



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# File 'lib/wombat/common.rb', line 180

def logs
  Dir.glob("#{conf['log_dir']}/#{cloud}*.log").reject { |l| !l.match(wombat['linux']) }
end

#parse_log(log, cloud) ⇒ Object 



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# File 'lib/wombat/common.rb', line 113

def parse_log(log, cloud)
  regex = cloud == 'gcp' ? "A disk image was created:" : "#{wombat['aws']['region']}:"
  File.read(log).split("\n").grep(/#{regex}/) {|x| x.split[1]}.last
end

#update_lock(cloud) ⇒ Object 



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# File 'lib/wombat/common.rb', line 196

def update_lock(cloud)
  copy = {}
  copy = wombat
  region = copy[cloud]['region']
  linux = copy['linux']
  copy['amis'] = { region => {} }

  if logs.length == 0
    warn('No logs found - skipping lock update')
  else
    logs.each do |log|
      case log
      when /build-node/
        copy['amis'][region]['build-node'] ||= {}
        num = log.split('-')[3]
        copy['amis'][region]['build-node'].store(num, parse_log(log, cloud))
      when /workstation/
        copy['amis'][region]['workstation'] ||= {}
        num = log.split('-')[2]
        copy['amis'][region]['workstation'].store(num, parse_log(log, cloud))
      when /infranodes/
        copy['amis'][region]['infranodes'] ||= {}
        name = log.split('-')[2]
        copy['amis'][region]['infranodes'].store(name, parse_log(log, cloud))
      else
        instance = log.match("#{cloud}-(.*)-#{linux}\.log")[1]
        copy['amis'][region].store(instance, parse_log(log, cloud))
      end
    end
    copy['last_updated'] = Time.now.gmtime.strftime('%Y%m%d%H%M%S')
    banner('Updating wombat.lock')
    File.open('wombat.lock', 'w') do |f|
      f.write(JSON.pretty_generate(copy))
    end
  end
end

#update_template(cloud) ⇒ Object 



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# File 'lib/wombat/common.rb', line 233

def update_template(cloud)
  if lock == 1
    warn('No lock - skipping template creation')
  else
    region = lock['aws']['region']
    @chef_server_ami = lock['amis'][region]['chef-server']
    @automate_ami = lock['amis'][region]['automate']
    @compliance_ami = lock['amis'][region]['compliance']
    @build_nodes = lock['build-nodes']['count'].to_i
    @build_node_ami = {}
    1.upto(@build_nodes) do |i|
      @build_node_ami[i] = lock['amis'][region]['build-node'][i.to_s]
    end
    @infra = {}
    infranodes.each do |name, _rl|
      @infra[name] = lock['amis'][region]['infranodes'][name]
    end
    @workstations = lock['workstations']['count'].to_i
    @workstation_ami = {}
    1.upto(@workstations) do |i|
      @workstation_ami[i] = lock['amis'][region]['workstation'][i.to_s]
    end
    @availability_zone = lock['aws']['az']
    @iam_roles = lock['aws']['iam_roles']
    @demo = lock['name']
    @version = lock['version']
    @ttl = lock['ttl']
    rendered_cfn = ERB.new(File.read("#{conf['template_dir']}/cfn.json.erb"), nil, '-').result(binding)
    Dir.mkdir(conf['stack_dir'], 0755) unless File.exist?(conf['stack_dir'])
    File.open("#{conf['stack_dir']}/#{@demo}.json", 'w') { |file| file.puts rendered_cfn }
    banner("Generated: #{conf['stack_dir']}/#{@demo}.json")
  end
end

#warn(msg) ⇒ Object 



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# File 'lib/wombat/common.rb', line 19

def warn(msg)
  puts ">>> #{msg}"
end

#wombat ⇒ Object 



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# File 'lib/wombat/common.rb', line 30

def wombat
  if !File.exists?('wombat.yml')
    warn('No wombat.yml found, copying example')
    gen_dir = "#{File.expand_path("../..", File.dirname(__FILE__))}/generator_files"
    FileUtils.cp_r "#{gen_dir}/wombat.yml", Dir.pwd
  end
  YAML.load(File.read('wombat.yml'))
end

#workstations ⇒ Object 



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# File 'lib/wombat/common.rb', line 134

def workstations
  workstations = {}
  1.upto(wombat['workstations']['count'].to_i) do |i|
    workstations["workstation-#{i}"] = i
  end
  workstations
end