ruby - 如何设置对在 Chef 加载 Recipe 时不存在的 Ruby 库的依赖项？

Question

场景:

• 方法 1:下载文件，解压它们。提供一个 CLI，它还定义了一个 Ruby 库。
• 秘诀 2:利用上述库中的 Ruby API。

在 recipe1/recipes/default.rb 中:

.. do work
node[:recipe1][:filePath] = ".." #path to file

在 recipe2/recipes/default.rb 中:

require node[:recipe1][:filePath]/lib/Library
.. do work

但是，当加载 Recipe 时，Chef 宣布:

[Wed, 17 Aug 2011 19:32:23 +0800] DEBUG: Loading cookbook apache2's definitions from /var/chef/cookbooks/apache2/definitions/web_app.rb
[Wed, 17 Aug 2011 19:32:23 +0800] DEBUG: Loading cookbook apache2's definitions from /var/chef/cookbooks/apache2/definitions/apache_module.rb
[Wed, 17 Aug 2011 19:32:23 +0800] DEBUG: Loading Recipe Recipe1 via include_recipe
[Wed, 17 Aug 2011 19:32:23 +0800] DEBUG: Found recipe default in cookbook Recipe1
[Wed, 17 Aug 2011 19:32:23 +0800] ERROR: Running exception handlers
[Wed, 17 Aug 2011 19:32:23 +0800] ERROR: Exception handlers complete
[Wed, 17 Aug 2011 19:32:23 +0800] DEBUG: Re-raising exception: LoadError - no such file to load -- /path/to/library/Library
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
/var/chef/cookbooks/hsltcli/recipes/default.rb:63:in `from_file'
/usr/lib64/ruby/gems/1.8/gems/chef-0.10.4/bin/../lib/chef/cookbook_version.rb:578:in `load_recipe'
/usr/lib64/ruby/gems/1.8/gems/chef-0.10.4/bin/../lib/chef/mixin/language_include_recipe.rb:40:in `include_recipe'
/usr/lib64/ruby/gems/1.8/gems/chef-0.10.4/bin/../lib/chef/mixin/language_include_recipe.rb:27:in `each'
/usr/lib64/ruby/gems/1.8/gems/chef-0.10.4/bin/../lib/chef/mixin/language_include_recipe.rb:27:in `include_recipe'

在所有配方都在运行之后，如何声明/启用 Ruby 库？

Answer 1

使用 Gem 包，您可以在资源上调用 run_action() 方法，使其在编译时发生，并确保清除 Gem 路径。例如:

r = gem_package "dynect_rest" do
  action :nothing
end
r.run_action(:install)
require 'rubygems'
Gem.clear_paths

或者，稍微紧凑一些:

gem_package "dynect_rest" do
  action :nothing
end.run_action(:install)
require 'rubygems'
Gem.clear_paths

(require 'rubygems' 可能不是绝对必要的，因为它应该已经由 Chef 加载，但我们想确定)