### Home Classes Methods

### In Files

- lib/chef/cookbook/metadata.rb

### Parent

Object

### Methods

- ::from_hash
- ::from_json
- ::new
- ::validate_json
- #==
- #attribute
- #conflicts
- #depends
- #description
- #from_hash
- #from_json
- #grouping
- #license
- #long_description
- #maintainer
- #maintainer_email
- #name
- #provides
- #recipe
- #recommends
- #replaces
- #suggests
- #supports
- #to_hash
- #to_json

### Included Modules

- Chef::Mixin::ParamsValidate
- Chef::Mixin::FromFile

### Files

- LICENSE

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No matching classes.

# Chef::Cookbook::Metadata

Chef::Cookbook::Metadata provides a convenient DSL for declaring metadata about Chef Cookbooks.

### Constants

ATTRIBUTES
COMPARISON_FIELDS
CONFLICTING
DEPENDENCIES
DESCRIPTION
GROUPINGS
LICENSE
LONG_DESCRIPTION
MAINTAINER
MAINTAINER_EMAIL
NAME
PLATFORMS
PROVIDING
RECIPES
RECOMMENDATIONS
REPLACING
SUGGESTIONS
VERSION
VERSION_CONSTRAINTS

### Attributes

attributes[R]
conflicting[R]
cookbook[R]
dependencies[R]
groupings[R]
platforms[R]
providing[R]
recipes[R]
recommendations[R]
replacing[R]
suggestions[R]
version[R]

### Public Class Methods

from_hash(o) click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 447
    def self.from_hash(o)
      cm = self.new()
      cm.from_hash(o)
      cm
    end

from_json(string) click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 474
    def self.from_json(string)
      o = Chef::JSONCompat.from_json(string)
      self.from_hash(o)
    end

new(cookbook=nil, maintainer='YOUR_COMPANY_NAME', maintainer_email='YOUR_EMAIL', license='none') click to toggle source

Builds a new Chef::Cookbook::Metadata object.

### Parameters

cookbook<String> | An optional cookbook object
maintainer<String> | An optional maintainer
maintainer_email<String> | An optional maintainer email

license<String>::An optional license. Default is Apache v2.0

### Returns

metadata<Chef::Cookbook::Metadata>

    # File lib/chef/cookbook/metadata.rb, line 92
    def initialize(cookbook=nil, maintainer='YOUR_COMPANY_NAME', maintainer_email='YOUR_EMAIL', license='none')
      @cookbook = cookbook
      @name = cookbook ? cookbook.name : ""
      @long_description = ""
      self.maintainer(maintainer)
      self.maintainer_email(maintainer_email)
      self.license(license)
      self.description('A fabulous new cookbook')
      @platforms = Mash.new
      @dependencies = Mash.new
      @recommendations = Mash.new
      @suggestions = Mash.new
      @conflicting = Mash.new
      @providing = Mash.new
      @replacing = Mash.new
      @attributes = Mash.new
      @groupings = Mash.new
      @recipes = Mash.new
      @version = Version.new "0.0.0"
      if cookbook
        @recipes = cookbook.fully_qualified_recipe_names.inject({}) do |r, e|
          e = self.name if e =~ /::default$/
          r[e] = ""
          self.provides e
          r
        end
      end
    end

validate_json(json_str) click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 479
    def self.validate_json(json_str)
      o = Chef::JSONCompat.from_json(json_str)
      metadata = new()
      VERSION_CONSTRAINTS.each do |method_name, hash_key|
        if constraints = o[hash_key]
         constraints.each do |cb_name, constraints|
           metadata.send(method_name, cb_name, *Array(constraints))
         end
        end
      end
      true
    end

### Public Instance Methods

==(other) click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 121
    def ==(other)
      COMPARISON_FIELDS.inject(true) do |equal_so_far, field|
        equal_so_far && other.respond_to?(field) && (other.send(field) == send(field))
      end
    end

attribute(name, options) click to toggle source

Adds an attribute )hat a user needs to configure for this cookbook. Takes a name (with the / notation for a nested attribute), followed by any of these options

    display_name<String>:: What a UI should show for this attribute
    description<String>:: A hint as to what this attr is for
    choice<Array>:: An array of choices to present to the user.
    calculated<Boolean>:: If true, the default value is calculated by the recipe and cannot be displayed.
    type<String>:: "string" or "array" - default is "string"  ("hash" is supported for backwards compatibility)
    required<String>:: Whether this attr is 'required', 'recommended' or 'optional' - default 'optional' (true/false values also supported for backwards compatibility)
    recipes<Array>:: An array of recipes which need this attr set.
    default<String>,<Array>,<Hash>:: The default value

### Parameters

name<String> | The name of the attribute ('foo', or 'apache2/log_dir')
options<Hash> | The description of the options

### Returns

options<Hash> | Returns the current options hash

    # File lib/chef/cookbook/metadata.rb, line 386
    def attribute(name, options)
      validate(
        options,
        {
          :display_name => { :kind_of => String },
          :description => { :kind_of => String },
          :choice => { :kind_of => [ Array ], :default => [] },
          :calculated => { :equal_to => [ true, false ], :default => false },
          :type => { :equal_to => [ "string", "array", "hash", "symbol" ], :default => "string" },
          :required => { :equal_to => [ "required", "recommended", "optional", true, false ], :default => "optional" },
          :recipes => { :kind_of => [ Array ], :default => [] },
          :default => { :kind_of => [ String, Array, Hash ] }
        }
      )
      options[:required] = remap_required_attribute(options[:required]) unless options[:required].nil?
      validate_string_array(options[:choice])
      validate_calculated_default_rule(options)
      validate_choice_default_rule(options)

      @attributes[name] = options
      @attributes[name]
    end

conflicts(cookbook, *version_args) click to toggle source

Adds a conflict for another cookbook, with version checking strings.

### Parameters

cookbook<String> | The cookbook
version<String> | A version constraint of the form "OP VERSION",

where OP is one of < <= = > >= ~> and VERSION has the form x.y.z or x.y.

### Returns

versions<Array> | Returns the list of versions for the platform

    # File lib/chef/cookbook/metadata.rb, line 311
    def conflicts(cookbook, *version_args)
      version = new_args_format(:conflicts, cookbook, version_args)
      validate_version_constraint(:conflicts, cookbook, version)
      @conflicting[cookbook] = version
      @conflicting[cookbook]
    end

depends(cookbook, *version_args) click to toggle source

Adds a dependency on another cookbook, with version checking strings.

### Parameters

cookbook<String> | The cookbook
version<String> | A version constraint of the form "OP VERSION",

where OP is one of < <= = > >= ~> and VERSION has the form x.y.z or x.y.

### Returns

versions<Array> | Returns the list of versions for the platform

    # File lib/chef/cookbook/metadata.rb, line 260
    def depends(cookbook, *version_args)
      version = new_args_format(:depends, cookbook, version_args)
      validate_version_constraint(:depends, cookbook, version)
      @dependencies[cookbook] = version
      @dependencies[cookbook]
    end

description(arg=nil) click to toggle source

Sets the current description, or returns it. Should be short - one line only!

### Parameters

description<String> | The new description

### Returns

description<String> | Returns the description

    # File lib/chef/cookbook/metadata.rb, line 179
    def description(arg=nil)
      set_or_return(
        :description,
        arg,
        :kind_of => [ String ]
      )
    end

from_hash(o) click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 453
    def from_hash(o)
      @name                         = o[NAME] if o.has_key?(NAME)
      @description                  = o[DESCRIPTION] if o.has_key?(DESCRIPTION)
      @long_description             = o[LONG_DESCRIPTION] if o.has_key?(LONG_DESCRIPTION)
      @maintainer                   = o[MAINTAINER] if o.has_key?(MAINTAINER)
      @maintainer_email             = o[MAINTAINER_EMAIL] if o.has_key?(MAINTAINER_EMAIL)
      @license                      = o[LICENSE] if o.has_key?(LICENSE)
      @platforms                    = o[PLATFORMS] if o.has_key?(PLATFORMS)
      @dependencies                 = handle_deprecated_constraints(o[DEPENDENCIES]) if o.has_key?(DEPENDENCIES)
      @recommendations              = handle_deprecated_constraints(o[RECOMMENDATIONS]) if o.has_key?(RECOMMENDATIONS)
      @suggestions                  = handle_deprecated_constraints(o[SUGGESTIONS]) if o.has_key?(SUGGESTIONS)
      @conflicting                  = handle_deprecated_constraints(o[CONFLICTING]) if o.has_key?(CONFLICTING)
      @providing                    = o[PROVIDING] if o.has_key?(PROVIDING)
      @replacing                    = handle_deprecated_constraints(o[REPLACING]) if o.has_key?(REPLACING)
      @attributes                   = o[ATTRIBUTES] if o.has_key?(ATTRIBUTES)
      @groupings                    = o[GROUPINGS] if o.has_key?(GROUPINGS)
      @recipes                      = o[RECIPES] if o.has_key?(RECIPES)
      @version                      = o[VERSION] if o.has_key?(VERSION)
      self
    end

from_json(string) click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 492
    def from_json(string)
      o = Chef::JSONCompat.from_json(string)
      from_hash(o)
    end

grouping(name, options) click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 409
    def grouping(name, options)
      validate(
        options,
        {
          :title => { :kind_of => String },
          :description => { :kind_of => String }
        }
      )
      @groupings[name] = options
      @groupings[name]
    end

license(arg=nil) click to toggle source

Sets the current license, or returns it.

### Parameters

license<String> | The current license.

### Returns

license<String> | Returns the current license

    # File lib/chef/cookbook/metadata.rb, line 164
    def license(arg=nil)
      set_or_return(
        :license,
        arg,
        :kind_of => [ String ]
      )
    end

long_description(arg=nil) click to toggle source

Sets the current long description, or returns it. Might come from a README, say.

### Parameters

long_description<String> | The new long description

### Returns

long_description<String> | Returns the long description

    # File lib/chef/cookbook/metadata.rb, line 194
    def long_description(arg=nil)
      set_or_return(
        :long_description,
        arg,
        :kind_of => [ String ]
      )
    end

maintainer(arg=nil) click to toggle source

Sets the cookbooks maintainer, or returns it.

### Parameters

maintainer<String> | The maintainers name

### Returns

maintainer<String> | Returns the current maintainer.

    # File lib/chef/cookbook/metadata.rb, line 134
    def maintainer(arg=nil)
      set_or_return(
        :maintainer,
        arg,
        :kind_of => [ String ]
      )
    end

maintainer_email(arg=nil) click to toggle source

Sets the maintainers email address, or returns it.

### Parameters

maintainer_email<String> | The maintainers email address

### Returns

maintainer_email<String> | Returns the current maintainer email.

    # File lib/chef/cookbook/metadata.rb, line 149
    def maintainer_email(arg=nil)
      set_or_return(
        :maintainer_email,
        arg,
        :kind_of => [ String ]
      )
    end

name(arg=nil) click to toggle source

Sets the name of the cookbook, or returns it.

### Parameters

name<String> | The curent cookbook name.

### Returns

name<String> | Returns the current cookbook name.

    # File lib/chef/cookbook/metadata.rb, line 225
    def name(arg=nil)
      set_or_return(
        :name,
        arg,
        :kind_of => [ String ]
      )
    end

provides(cookbook, *version_args) click to toggle source

Adds a recipe, definition, or resource provided by this cookbook.

Recipes are specified as normal Definitions are followed by (), and can include :params for prototyping Resources are the stringified version (service)

### Parameters

recipe, definition, resource<String> | The thing we provide
version<String> | A version constraint of the form "OP VERSION",

where OP is one of < <= = > >= ~> and VERSION has the form x.y.z or x.y.

### Returns

versions<Array> | Returns the list of versions for the platform

    # File lib/chef/cookbook/metadata.rb, line 332
    def provides(cookbook, *version_args)
      version = new_args_format(:provides, cookbook, version_args)
      validate_version_constraint(:provides, cookbook, version)
      @providing[cookbook] = version
      @providing[cookbook]
    end

recipe(name, description) click to toggle source

Adds a description for a recipe.

### Parameters

recipe<String> | The recipe
description<String> | The description of the recipe

### Returns

description<String> | Returns the current description

    # File lib/chef/cookbook/metadata.rb, line 363
    def recipe(name, description)
      @recipes[name] = description
    end

recommends(cookbook, *version_args) click to toggle source

Adds a recommendation for another cookbook, with version checking strings.

### Parameters

cookbook<String> | The cookbook
version<String> | A version constraint of the form "OP VERSION",

where OP is one of < <= = > >= ~> and VERSION has the form x.y.z or x.y.

### Returns

versions<Array> | Returns the list of versions for the platform

    # File lib/chef/cookbook/metadata.rb, line 277
    def recommends(cookbook, *version_args)
      version = new_args_format(:recommends, cookbook,  version_args)
      validate_version_constraint(:recommends, cookbook, version)
      @recommendations[cookbook] = version
      @recommendations[cookbook]
    end

replaces(cookbook, *version_args) click to toggle source

Adds a cookbook that is replaced by this one, with version checking strings.

### Parameters

cookbook<String> | The cookbook we replace
version<String> | A version constraint of the form "OP VERSION",

where OP is one of < <= = > >= ~> and VERSION has the form x.y.z or x.y.

### Returns

versions<Array> | Returns the list of versions for the platform

    # File lib/chef/cookbook/metadata.rb, line 348
    def replaces(cookbook, *version_args)
      version = new_args_format(:replaces, cookbook, version_args)
      validate_version_constraint(:replaces, cookbook, version)
      @replacing[cookbook] = version
      @replacing[cookbook]
    end

suggests(cookbook, *version_args) click to toggle source

Adds a suggestion for another cookbook, with version checking strings.

### Parameters

cookbook<String> | The cookbook
version<String> | A version constraint of the form "OP VERSION",

where OP is one of < <= = > >= ~> and VERSION has the formx.y.z or x.y.

### Returns

versions<Array> | Returns the list of versions for the platform

    # File lib/chef/cookbook/metadata.rb, line 294
    def suggests(cookbook, *version_args)
      version = new_args_format(:suggests, cookbook, version_args)
      validate_version_constraint(:suggests, cookbook, version)
      @suggestions[cookbook] = version
      @suggestions[cookbook]
    end

supports(platform, *version_args) click to toggle source

Adds a supported platform, with version checking strings.

### Parameters

platform<String>,<Symbol> | The platform (like :ubuntu or :mac_os_x)
version<String> | A version constraint of the form "OP VERSION",

where OP is one of < <= = > >= ~> and VERSION has the form x.y.z or x.y.

### Returns

versions<Array> | Returns the list of versions for the platform

    # File lib/chef/cookbook/metadata.rb, line 243
    def supports(platform, *version_args)
      version = new_args_format(:supports, platform, version_args)
      validate_version_constraint(:supports, platform, version)
      @platforms[platform] = version
      @platforms[platform]
    end

to_hash() click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 421
    def to_hash
      {
        NAME             => self.name,
        DESCRIPTION      => self.description,
        LONG_DESCRIPTION => self.long_description,
        MAINTAINER       => self.maintainer,
        MAINTAINER_EMAIL => self.maintainer_email,
        LICENSE          => self.license,
        PLATFORMS        => self.platforms,
        DEPENDENCIES     => self.dependencies,
        RECOMMENDATIONS  => self.recommendations,
        SUGGESTIONS      => self.suggestions,
        CONFLICTING      => self.conflicting,
        PROVIDING        => self.providing,
        REPLACING        => self.replacing,
        ATTRIBUTES       => self.attributes,
        GROUPINGS        => self.groupings,
        RECIPES          => self.recipes,
        VERSION          => self.version
      }
    end

to_json(*a) click to toggle source

    # File lib/chef/cookbook/metadata.rb, line 443
    def to_json(*a)
      self.to_hash.to_json(*a)
    end

[Validate]

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