class Bosh::Director::Core::Templates::JobTemplateLoader

Public Class Methods

new(logger) click to toggle source
# File lib/bosh/director/core/templates/job_template_loader.rb, line 7
def initialize(logger)
  @logger = logger
end

Public Instance Methods

process(job_template) click to toggle source
# File lib/bosh/director/core/templates/job_template_loader.rb, line 11
def process(job_template)
  template_dir = extract_template(job_template)
  manifest = Psych.load_file(File.join(template_dir, 'job.MF'))

  monit_erb_file = File.read(File.join(template_dir, 'monit'))
  monit_source_erb = SourceErb.new('monit', 'monit', monit_erb_file, job_template.name)

  source_erbs = []

  template_name = manifest.fetch('name', {})

  manifest.fetch('templates', {}).each_pair do |src_name, dest_name|
    erb_file = File.read(File.join(template_dir, 'templates', src_name))
    source_erbs << SourceErb.new(src_name, dest_name, erb_file, job_template.name)
  end

  JobTemplateRenderer.new(job_template.name, template_name, monit_source_erb, source_erbs, @logger)
ensure
  FileUtils.rm_rf(template_dir) if template_dir
end

Private Instance Methods

extract_template(job_template) click to toggle source
# File lib/bosh/director/core/templates/job_template_loader.rb, line 34
def extract_template(job_template)
  temp_path = job_template.download_blob
  template_dir = Dir.mktmpdir('template_dir')

  output = `tar -C #{template_dir} -xzf #{temp_path} 2>&1`
  if $?.exitstatus != 0
    raise JobTemplateUnpackFailed,
          "Cannot unpack '#{job_template.name}' job template, " +
            "tar returned #{$?.exitstatus}, " +
            "tar output: #{output}"
  end

  template_dir
ensure
  FileUtils.rm_f(temp_path) if temp_path
end