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+#
+# Author:: Christopher Webber (<cwebber@chef.io>)
+# Copyright:: Copyright (c) Chef Software 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_relative "../knife"
+
+class Chef
+ class Knife
+ class SupermarketDownload < Knife
+
+ banner "knife supermarket download COOKBOOK [VERSION] (options)"
+ category "supermarket"
+
+ deps do
+ require "fileutils" unless defined?(FileUtils)
+ end
+
+ option :file,
+ short: "-f FILE",
+ long: "--file FILE",
+ description: "The filename to write to."
+
+ option :force,
+ long: "--force",
+ description: "Force download deprecated version."
+
+ option :supermarket_site,
+ short: "-m SUPERMARKET_SITE",
+ long: "--supermarket-site SUPERMARKET_SITE",
+ description: "The URL of the Supermarket site.",
+ default: "https://supermarket.chef.io"
+
+ def run
+ if current_cookbook_deprecated?
+ message = "DEPRECATION: This cookbook has been deprecated. "
+ replacement = replacement_cookbook
+ if !replacement.to_s.strip.empty?
+ message << "It has been replaced by #{replacement}."
+ else
+ message << "No replacement has been defined."
+ end
+ ui.warn message
+
+ unless config[:force]
+ ui.warn "Use --force to force download deprecated cookbook."
+ return
+ end
+ end
+
+ download_cookbook
+ end
+
+ def version
+ @version = desired_cookbook_data["version"]
+ end
+
+ private
+
+ def cookbooks_api_url
+ "#{config[:supermarket_site]}/api/v1/cookbooks"
+ end
+
+ def current_cookbook_data
+ @current_cookbook_data ||= begin
+ noauth_rest.get "#{cookbooks_api_url}/#{@name_args[0]}"
+ end
+ end
+
+ def current_cookbook_deprecated?
+ current_cookbook_data["deprecated"] == true
+ end
+
+ def desired_cookbook_data
+ @desired_cookbook_data ||= begin
+ uri = if @name_args.length == 1
+ current_cookbook_data["latest_version"]
+ else
+ specific_cookbook_version_url
+ end
+
+ noauth_rest.get uri
+ end
+ end
+
+ def download_cookbook
+ ui.info "Downloading #{@name_args[0]} from Supermarket at version #{version} to #{download_location}"
+ tf = noauth_rest.streaming_request(desired_cookbook_data["file"])
+
+ ::FileUtils.cp tf.path, download_location
+ ui.info "Cookbook saved: #{download_location}"
+ end
+
+ def download_location
+ config[:file] ||= File.join Dir.pwd, "#{@name_args[0]}-#{version}.tar.gz"
+ config[:file]
+ end
+
+ def replacement_cookbook
+ File.basename(current_cookbook_data["replacement"] || "")
+ end
+
+ def specific_cookbook_version_url
+ "#{cookbooks_api_url}/#{@name_args[0]}/versions/#{@name_args[1].tr(".", "_")}"
+ end
+ end
+ end
+end