Class: Chef::Provider::Link

Inherits:
Chef::Provider show all
Includes:
Mixin::FileClass, Mixin::ShellOut
Defined in:
lib/chef/provider/link.rb

Constant Summary

Constants included from Mixin::ShellOut

Mixin::ShellOut::DEPRECATED_OPTIONS

Instance Attribute Summary

Attributes inherited from Chef::Provider

#action, #current_resource, #new_resource, #run_context

Instance Method Summary collapse

Methods included from Mixin::FileClass

#file_class

Methods included from Mixin::ShellOut

#run_command_compatible_options, #shell_out, #shell_out!

Methods inherited from Chef::Provider

#action_nothing, build_from_file, #cleanup_after_converge, #converge, #cookbook_name, #events, #initialize, #node, #process_resource_requirements, #requirements, #resource_collection, #run_action, #whyrun_mode?

Methods included from Mixin::ConvertToClassName

#convert_to_class_name, #convert_to_snake_case, #filename_to_qualified_string, #snake_case_basename

Methods included from Mixin::EnforceOwnershipAndPermissions

#access_controls, #enforce_ownership_and_permissions

Methods included from Mixin::RecipeDefinitionDSLCore

#method_missing

Methods included from Mixin::Language

#data_bag, #data_bag_item, #platform?, #platform_family?, #search, #value_for_platform, #value_for_platform_family

Constructor Details

This class inherits a constructor from Chef::Provider

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Chef::Mixin::RecipeDefinitionDSLCore

Instance Method Details

#action_createObject


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# File 'lib/chef/provider/link.rb', line 89

def action_create
  if @current_resource.to != canonicalize(@new_resource.to) ||
     @current_resource.link_type != @new_resource.link_type
    if @current_resource.to # nil if target_file does not exist
      converge_by("unlink existing file at #{@new_resource.target_file}") do
        ::File.unlink(@new_resource.target_file)
      end
    end
    if @new_resource.link_type == :symbolic
      converge_by("create symlink at #{@new_resource.target_file} to #{@new_resource.to}") do
        file_class.symlink(canonicalize(@new_resource.to),@new_resource.target_file)
        Chef::Log.debug("#{@new_resource} created #{@new_resource.link_type} link from #{@new_resource.to} -> #{@new_resource.target_file}")
        Chef::Log.info("#{@new_resource} created")
      end
    elsif @new_resource.link_type == :hard
      converge_by("create hard link at #{@new_resource.target_file} to #{@new_resource.to}") do
        file_class.link(@new_resource.to, @new_resource.target_file)
        Chef::Log.debug("#{@new_resource} created #{@new_resource.link_type} link from #{@new_resource.to} -> #{@new_resource.target_file}")
        Chef::Log.info("#{@new_resource} created")
      end
    end
  end
  if @new_resource.link_type == :symbolic
    if access_controls.requires_changes?
      converge_by(access_controls.describe_changes) do 
        access_controls.set_all
      end
    end
 end
end

#action_deleteObject


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# File 'lib/chef/provider/link.rb', line 120

def action_delete
  if @current_resource.to # Exists
    converge_by ("delete link at #{@new_resource.target_file}") do
      ::File.delete(@new_resource.target_file)
      Chef::Log.info("#{@new_resource} deleted")
    end
  end
end

#canonicalize(path) ⇒ Object


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# File 'lib/chef/provider/link.rb', line 85

def canonicalize(path)
  Chef::Platform.windows? ? path.gsub('/', '\\') : path
end

#define_resource_requirementsObject


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# File 'lib/chef/provider/link.rb', line 70

def define_resource_requirements
  requirements.assert(:delete) do |a|
    a.assertion do
      if @current_resource.to
        @current_resource.link_type == @new_resource.link_type and
        (@current_resource.link_type == :symbolic  or @current_resource.to != '')
      else
        true
      end
    end
    a.failure_message Chef::Exceptions::Link, "Cannot delete #{@new_resource} at #{@new_resource.target_file}! Not a #{@new_resource.link_type.to_s} link."
    a.whyrun("Would assume the link at #{@new_resource.target_file} was previously created")
  end
end

#load_current_resourceObject


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# File 'lib/chef/provider/link.rb', line 46

def load_current_resource
  @current_resource = Chef::Resource::Link.new(@new_resource.name)
  @current_resource.target_file(@new_resource.target_file)
  if file_class.symlink?(@current_resource.target_file)
    @current_resource.link_type(:symbolic)
    @current_resource.to(
      canonicalize(file_class.readlink(@current_resource.target_file))
    )
  else
    @current_resource.link_type(:hard)
    if ::File.exists?(@current_resource.target_file)
      if ::File.exists?(@new_resource.to) &&
         file_class.stat(@current_resource.target_file).ino ==
         file_class.stat(@new_resource.to).ino
        @current_resource.to(canonicalize(@new_resource.to))
      else
        @current_resource.to("")
      end
    end
  end
  ScanAccessControl.new(@new_resource, @current_resource).set_all!
  @current_resource
end

#whyrun_supported?Boolean

Returns:

  • (Boolean)

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# File 'lib/chef/provider/link.rb', line 42

def whyrun_supported?
  true
end