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#
# Author:: Adam Jacob (<adam@opscode.com>)
# Author:: Christopher Walters (<cw@opscode.com>)
# Copyright:: Copyright (c) 2009, 2010 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/knife"
class Chef
class Knife
class CookbookDownload < Knife
attr_reader :version
attr_accessor :cookbook_name
deps do
require "chef/cookbook_version"
end
banner "knife cookbook download COOKBOOK [VERSION] (options)"
option :latest,
:short => "-N",
:long => "--latest",
:description => "The version of the cookbook to download",
:boolean => true
option :download_directory,
:short => "-d DOWNLOAD_DIRECTORY",
:long => "--dir DOWNLOAD_DIRECTORY",
:description => "The directory to download the cookbook into",
:default => Dir.pwd
option :force,
:short => "-f",
:long => "--force",
:description => "Force download over the download directory if it exists"
# TODO: tim/cw: 5-23-2010: need to implement knife-side
# specificity for downloads - need to implement --platform and
# --fqdn here
def run
@cookbook_name, @version = @name_args
if @cookbook_name.nil?
show_usage
ui.fatal("You must specify a cookbook name")
exit 1
elsif @version.nil?
@version = determine_version
if @version.nil?
ui.fatal("No such cookbook found")
exit 1
end
end
ui.info("Downloading #{@cookbook_name} cookbook version #{@version}")
cookbook = Chef::CookbookVersion.load(@cookbook_name, @version)
manifest = cookbook.manifest
basedir = File.join(config[:download_directory], "#{@cookbook_name}-#{cookbook.version}")
if File.exists?(basedir)
if config[:force]
Chef::Log.debug("Deleting #{basedir}")
FileUtils.rm_rf(basedir)
else
ui.fatal("Directory #{basedir} exists, use --force to overwrite")
exit
end
end
Chef::CookbookVersion::COOKBOOK_SEGMENTS.each do |segment|
next unless manifest.has_key?(segment)
ui.info("Downloading #{segment}")
manifest[segment].each do |segment_file|
dest = File.join(basedir, segment_file["path"].gsub("/", File::SEPARATOR))
Chef::Log.debug("Downloading #{segment_file['path']} to #{dest}")
FileUtils.mkdir_p(File.dirname(dest))
tempfile = rest.streaming_request(segment_file["url"])
FileUtils.mv(tempfile.path, dest)
end
end
ui.info("Cookbook downloaded to #{basedir}")
end
def determine_version
if available_versions.nil?
nil
elsif available_versions.size == 1
@version = available_versions.first
elsif config[:latest]
@version = available_versions.last
else
ask_which_version
end
end
def available_versions
@available_versions ||= begin
versions = Chef::CookbookVersion.available_versions(@cookbook_name)
unless versions.nil?
versions.map! { |version| Chef::Version.new(version) }
versions.sort!
end
versions
end
@available_versions
end
def ask_which_version
question = "Which version do you want to download?\n"
valid_responses = {}
available_versions.each_with_index do |version, index|
valid_responses[(index + 1).to_s] = version
question << "#{index + 1}. #{@cookbook_name} #{version}\n"
end
question += "\n"
response = ask_question(question).strip
unless @version = valid_responses[response]
ui.error("'#{response}' is not a valid value.")
exit(1)
end
@version
end
end
end
end
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