Class: Chef::Platform

Inherits:
Object show all
Extended by:
Mixin::ParamsValidate
Defined in:
lib/chef/platform.rb

Class Attribute Summary collapse

Class Method Summary collapse

Methods included from Mixin::ParamsValidate

set_or_return, validate

Class Attribute Details

.platforms ⇒ Object 



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# File 'lib/chef/platform.rb', line 35

def platforms
  @platforms ||= {
    :default  => {
      :file => Chef::Provider::File,
      :directory => Chef::Provider::Directory,
      :link => Chef::Provider::Link,
      :template => Chef::Provider::Template,
      :remote_directory => Chef::Provider::RemoteDirectory,
      :execute => Chef::Provider::Execute
    }
  }
end

Class Method Details

.find(name, version) ⇒ Object 



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# File 'lib/chef/platform.rb', line 50

def find(name, version)
  provider_map = platforms[:default].clone

  name_sym = name
  if name.kind_of?(String)
    name.downcase!
    name.gsub!(/\s/, "_")
    name_sym = name.to_sym
  end

  if platforms.has_key?(name_sym)
    if platforms[name_sym].has_key?(version)
      Chef::Log.debug("Platform #{name.to_s} version #{version} found")
      if platforms[name_sym].has_key?(:default)
        provider_map.merge!(platforms[name_sym][:default])
      end
      provider_map.merge!(platforms[name_sym][version])
    elsif platforms[name_sym].has_key?(:default)
      provider_map.merge!(platforms[name_sym][:default])
    end
  else
    Chef::Log.debug("Platform #{name} not found, using all defaults. (Unsupported platform?)")
  end
  provider_map
end

.find_platform_and_version(node) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/chef/platform.rb', line 76

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

.find_provider(platform, version, resource_type) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/chef/platform.rb', line 180

def find_provider(platform, version, resource_type)
  pmap = Chef::Platform.find(platform, version)
  provider_klass = explicit_provider(platform, version, resource_type) ||
                   platform_provider(platform, version, resource_type) ||
                   resource_matching_provider(platform, version, resource_type)

  raise ArgumentError, "Cannot find a provider for #{resource_type} on #{platform} version #{version}" if provider_klass.nil?

  provider_klass
end

.find_provider_for_node(node, resource_type) ⇒ Object 



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# File 'lib/chef/platform.rb', line 112

def find_provider_for_node(node, resource_type)
  platform, version = find_platform_and_version(node)
  provider = find_provider(platform, version, resource_type)
end

.provider_for_node(node, resource_type) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/chef/platform.rb', line 107

def provider_for_node(node, resource_type)
  raise NotImplementedError, "#{self.class.name} no longer supports #provider_for_node"
  find_provider_for_node(node, resource_type).new(node, resource_type)
end

.provider_for_resource(resource) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/chef/platform.rb', line 101

def provider_for_resource(resource)
  node = resource.run_context && resource.run_context.node
  raise ArgumentError, "Cannot find the provider for a resource with no run context set" unless node
  find_provider_for_node(node, resource).new(resource, resource.run_context)
end

.set(args) ⇒ Object 



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# File 'lib/chef/platform.rb', line 117

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]
        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