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#
# Author:: Adam Jacob (<adam@opscode.com>)
# Copyright:: Copyright (c) 2008 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/log'
require 'chef/exceptions'
require 'chef/mixin/params_validate'
require 'chef/version_constraint/platform'
require 'chef/provider'
class Chef
class Platform
class << self
attr_writer :platforms
def platforms
@platforms ||= { default: {} }
end
include Chef::Mixin::ParamsValidate
def find(name, version)
provider_map = platforms[:default].clone
name_sym = name
if name.kind_of?(String)
name = name.downcase
name.gsub!(/\s/, "_")
name_sym = name.to_sym
end
if platforms.has_key?(name_sym)
platform_versions = platforms[name_sym].select {|k, v| k != :default }
if platforms[name_sym].has_key?(:default)
provider_map.merge!(platforms[name_sym][:default])
end
platform_versions.each do |platform_version, provider|
begin
version_constraint = Chef::VersionConstraint::Platform.new(platform_version)
if version_constraint.include?(version)
Chef::Log.debug("Platform #{name} version #{version} found")
provider_map.merge!(provider)
end
rescue Chef::Exceptions::InvalidPlatformVersion
Chef::Log.debug("Chef::Version::Comparable does not know how to parse the platform version: #{version}")
end
end
end
provider_map
end
def find_platform_and_version(node)
platform = nil
version = nil
if node[:platform]
platform = node[:platform]
elsif node.attribute?("os")
platform = node[:os]
end
raise ArgumentError, "Cannot find a platform for #{node}" unless platform
if node[:platform_version]
version = node[:platform_version]
elsif node[:os_version]
version = node[:os_version]
elsif node[:os_release]
version = node[:os_release]
end
raise ArgumentError, "Cannot find a version for #{node}" unless version
return platform, version
end
def provider_for_resource(resource, action=:nothing)
node = resource.run_context && resource.run_context.node
raise ArgumentError, "Cannot find the provider for a resource with no run context set" unless node
provider = find_provider_for_node(node, resource).new(resource, resource.run_context)
provider.action = action
provider
end
def provider_for_node(node, resource_type)
raise NotImplementedError, "#{self.class.name} no longer supports #provider_for_node"
end
def find_provider_for_node(node, resource_type)
platform, version = find_platform_and_version(node)
find_provider(platform, version, resource_type)
end
def set(args)
validate(
args,
{
:platform => {
:kind_of => Symbol,
:required => false,
},
:version => {
:kind_of => String,
:required => false,
},
:resource => {
:kind_of => Symbol
},
:provider => {
:kind_of => [ String, Symbol, Class ]
},
},
)
if args.has_key?(:platform)
if args.has_key?(:version)
if platforms.has_key?(args[:platform])
if platforms[args[:platform]].has_key?(args[:version])
platforms[args[:platform]][args[:version]][args[:resource].to_sym] = args[:provider]
else
platforms[args[:platform]][args[:version]] = {
args[:resource].to_sym => args[:provider]
}
end
else
platforms[args[:platform]] = {
args[:version] => {
args[:resource].to_sym => args[:provider]
}
}
end
else
if platforms.has_key?(args[:platform])
if platforms[args[:platform]].has_key?(:default)
platforms[args[:platform]][:default][args[:resource].to_sym] = args[:provider]
elsif args[:platform] == :default
platforms[:default][args[:resource].to_sym] = args[:provider]
else
platforms[args[:platform]] = { :default => { args[:resource].to_sym => args[:provider] } }
end
else
platforms[args[:platform]] = {
:default => {
args[:resource].to_sym => args[:provider]
}
}
end
end
else
if platforms.has_key?(:default)
platforms[:default][args[:resource].to_sym] = args[:provider]
else
platforms[:default] = {
args[:resource].to_sym => args[:provider]
}
end
end
end
def find_provider(platform, version, resource_type)
provider_klass = explicit_provider(platform, version, resource_type) ||
platform_provider(platform, version, resource_type) ||
resource_matching_provider(platform, version, resource_type)
raise Chef::Exceptions::ProviderNotFound, "Cannot find a provider for #{resource_type} on #{platform} version #{version}" if provider_klass.nil?
provider_klass
end
private
def explicit_provider(platform, version, resource_type)
resource_type.kind_of?(Chef::Resource) ? resource_type.provider : nil
end
def platform_provider(platform, version, resource_type)
pmap = Chef::Platform.find(platform, version)
rtkey = resource_type.kind_of?(Chef::Resource) ? resource_type.resource_name.to_sym : resource_type
pmap.has_key?(rtkey) ? pmap[rtkey] : nil
end
include Chef::Mixin::ConvertToClassName
def resource_matching_provider(platform, version, resource_type)
if resource_type.kind_of?(Chef::Resource)
class_name = resource_type.class.name ? resource_type.class.name.split('::').last :
convert_to_class_name(resource_type.resource_name.to_s)
if Chef::Provider.const_defined?(class_name)
Chef::Log.warn("Class Chef::Provider::#{class_name} does not declare 'provides #{convert_to_snake_case(class_name).to_sym.inspect}'.")
Chef::Log.warn("This will no longer work in Chef 13: you must use 'provides' to use the resource's DSL.")
return Chef::Provider.const_get(class_name)
end
end
nil
end
end
end
end
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