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#
# Author:: Lamont Granquist (<lamont@opscode.com>)
# Copyright:: Copyright (c) 2013 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require 'chef/mixin/template'
require 'chef/file_content_management/content_base'
class Chef
class Provider
class Template
# TODO: extract to file
# TODO: integrate into mixin/template (make it work with partials)
# TODO: docs
class TemplateContext < Erubis::Context
def _define_helpers(helper_methods)
# TODO (ruby 1.8 hack)
# This is most elegantly done with Object#define_singleton_method,
# however ruby 1.8.7 does not support that, so we create a module and
# include it. This should be revised when 1.8 support is not needed.
helper_mod = Module.new do
helper_methods.each do |method_name, method_body|
define_method(method_name, &method_body)
end
end
extend(helper_mod)
end
def _define_helpers_from_blocks(blocks)
blocks.each do |module_body|
helper_mod = Module.new(&module_body)
extend(helper_mod)
end
end
def _extend_modules(module_names)
module_names.each { |mod| extend(mod) }
end
end
class Content < Chef::FileContentManagement::ContentBase
include Chef::Mixin::Template
def template_location
@template_file_cache_location ||= begin
template_finder.find(@new_resource.source, :local => @new_resource.local, :cookbook => @new_resource.cookbook)
end
end
private
def file_for_provider
context = TemplateContext.new(@new_resource.variables)
context[:node] = @run_context.node
context[:template_finder] = template_finder
context._define_helpers(@new_resource.inline_helper_blocks)
context._define_helpers_from_blocks(@new_resource.inline_helper_modules)
context._extend_modules(@new_resource.helper_modules)
file = nil
render_template(IO.read(template_location), context) { |t| file = t }
file
end
def template_finder
@template_finder ||= begin
TemplateFinder.new(run_context, @new_resource.cookbook_name, @run_context.node)
end
end
end
end
end
end
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