Class: Bixby::Provision::Config

Inherits:
Base
  • Object
show all
Defined in:
lib/bixby/provision/dsl/config.rb

Constant Summary collapse

EXPORTS = 
[]

Constants inherited from Base

Base::PATH

Instance Attribute Summary

Attributes inherited from Base

#manifest, #proxy

Instance Method Summary collapse

Methods inherited from Base

#get_gid, #get_group, #get_uid, #get_user, #initialize, #tap

Methods included from Util::File

#chmod, #chown, #sha256sum, #which

Constructor Details

This class inherits a constructor from Bixby::Provision::Base

Instance Method Details

#file(dest, opts = {}) ⇒ Object 



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# File 'lib/bixby/provision/dsl/config.rb', line 11

def file(dest, opts={})

  # By default, attempt to preserve ownership and mode if none are given in opts
  opts[:preserve] = true if !opts.include? :preserve

  dest_file = File.expand_path(dest)
  if File.exists? dest_file then
    stat = File.stat(dest_file)
    old_owner = "#{stat.uid}:#{stat.gid}"
    old_mode  = stat.mode
  else
    old_owner = old_mode = nil
    dir.create(File.dirname(dest_file))
  end

  source = resolve_file(opts.delete(:source), dest_file)
  if source.nil? then
    # TODO raise
  end

  template = get_template(source)
  if template.nil? then

    if sha256sum(dest_file) == sha256sum(source) then
      logger.info "[config] skipping #{dest_file}: sha256sum matches"
      return
    end

    # just copy the file over
    if File.writable?(dest_file) then
      logger.info "[config] copying #{source} to #{dest}"
      FileUtils.cp(source, dest_file)
    else
      logger.info "[config] copying #{source} to #{dest} (as root)"
      logged_sudo("cp #{source} #{dest_file}")
    end

  else
    # use template
    logger.info "[config] rendering template #{source}"
    str = template.render(self.proxy)

    if (File.exists? dest_file and File.writable? dest_file) or
        File.writable? File.dirname(dest_file) then

      # write directly
      File.open(dest_file, 'w') { |f| f.write str }

    else
      # write to temp and mv into place
      t = Tempfile.new("bixby-provision-")
      t.write str
      t.close
      logged_sudo("mv #{t.path} #{dest_file}")
    end

  end

  # set correct ownership/mode
  owner = opts[:chown]
  mode = opts[:chmod]
  if opts[:preserve] then
    owner ||= old_owner
    mode ||= old_mode
  end
  chown(dest_file, owner)
  chmod(dest_file, mode)

end