Class: Ridley::Chef::Cookbook

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/ridley/chef/cookbook.rb,
lib/ridley/chef/cookbook/metadata.rb,
lib/ridley/chef/cookbook/syntax_check.rb

Defined Under Namespace

Classes: Metadata, MinimalMetadata, SyntaxCheck

Constant Summary collapse

CHEF_TYPE = 
"cookbook_version".freeze
CHEF_JSON_CLASS = 
"Chef::CookbookVersion".freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, path, metadata) ⇒ Cookbook

Returns a new instance of Cookbook.



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# File 'lib/ridley/chef/cookbook.rb', line 85

def initialize(name, path, metadata)
  @cookbook_name = name
  @path          = Pathname.new(path)
  @metadata      = metadata
  @frozen        = false
  @chefignore    = Ridley::Chef::Chefignore.new(@path) rescue nil

  clear_files
  load_files
end

Instance Attribute Details

#cookbook_name ⇒ Object (readonly)

Returns the value of attribute cookbook_name.



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# File 'lib/ridley/chef/cookbook.rb', line 56

def cookbook_name
  @cookbook_name
end

#frozen ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ridley/chef/cookbook.rb', line 81

def frozen
  @frozen
end

#manifest ⇒ Hashie::Mash (readonly)

Returns a Hashie::Mash containing Cookbook file category names as keys and an Array of Hashes containing metadata about the files belonging to that category. This is used to communicate what a Cookbook looks like when uploading to a Chef Server.

example:

{
  :recipes => [
    {
      name: "default.rb",
      path: "recipes/default.rb",
      checksum: "fb1f925dcd5fc4ebf682c4442a21c619",
      specificity: "default"
    }
  ]
  ...
  ...
}.

Returns:

  • (Hashie::Mash) —

    a Hashie::Mash containing Cookbook file category names as keys and an Array of Hashes containing metadata about the files belonging to that category. This is used to communicate what a Cookbook looks like when uploading to a Chef Server.

    example:

    {
  :recipes => [
    {
      name: "default.rb",
      path: "recipes/default.rb",
      checksum: "fb1f925dcd5fc4ebf682c4442a21c619",
      specificity: "default"
    }
  ]
  ...
  ...
}



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# File 'lib/ridley/chef/cookbook.rb', line 78

def manifest
  @manifest
end

#metadata ⇒ Object (readonly)

Returns the value of attribute metadata.



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# File 'lib/ridley/chef/cookbook.rb', line 58

def metadata
  @metadata
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/ridley/chef/cookbook.rb', line 57

def path
  @path
end

Class Method Details

.checksum(filepath) ⇒ String

Returns a checksum that can be used to uniquely identify the file understood by a Chef Server.

Parameters:

  • filepath (String) —

    a path on disk to the location of a file to checksum

Returns:

  • (String) —

    a checksum that can be used to uniquely identify the file understood by a Chef Server.



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# File 'lib/ridley/chef/cookbook.rb', line 15

def checksum(filepath)
  Ridley::Chef::Digester.md5_checksum_for_file(filepath)
end

.from_path(path) ⇒ Ridley::Chef::Cookbook

Creates a new instance of Ridley::Chef::Cookbook from a path on disk containing a Cookbook.

The name of the Cookbook is determined by the value of the name attribute set in the cookbooks’ metadata. If the name attribute is not present the name of the loaded cookbook is determined by directory containing the cookbook.

Parameters:

  • path (#to_s) —

    a path on disk to the location of a Cookbook

Returns:

Raises:

  • (IOError) —

    if the path does not contain a metadata.rb or metadata.json file



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# File 'lib/ridley/chef/cookbook.rb', line 32

def from_path(path)
  path = Pathname.new(path)

  if (file = path.join(Metadata::COMPILED_FILE_NAME)).exist?
    metadata = Metadata.from_json(File.read(file))
  elsif (file = path.join(Metadata::RAW_FILE_NAME)).exist?
    metadata = Metadata.from_file(file)
  else
    raise IOError, "no #{Metadata::COMPILED_FILE_NAME} or #{Metadata::RAW_FILE_NAME} found at #{path}"
  end

  unless metadata.name.presence
    raise Ridley::Errors::MissingNameAttribute.new(path)
  end

  new(metadata.name, path, metadata)
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/ridley/chef/cookbook.rb', line 228

def <=>(other)
  [self.cookbook_name, self.version] <=> [other.cookbook_name, other.version]
end

#checksums ⇒ Hash

Returns an hash containing the checksums and expanded file paths of all of the files found in the instance of CachedCookbook

example:

{
  "da97c94bb6acb2b7900cbf951654fea3" => "/Users/reset/.ridley/nginx-0.101.2/README.md"
}.

Returns:

  • (Hash) —

    an hash containing the checksums and expanded file paths of all of the files found in the instance of CachedCookbook

    example:

    {
  "da97c94bb6acb2b7900cbf951654fea3" => "/Users/reset/.ridley/nginx-0.101.2/README.md"
}



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# File 'lib/ridley/chef/cookbook.rb', line 104

def checksums
  {}.tap do |checksums|
    files.each do |file|
      checksums[self.class.checksum(file)] = file
    end
  end
end

#compile_metadata(out = self.path) ⇒ String

Compiles the raw metadata of the cookbook and writes it to a metadata.json file at the given out path. The default out path is the directory containing the cookbook itself.

Parameters:

  • out (String) (defaults to: self.path) —

    directory to output compiled metadata to

Returns:

  • (String) —

    path to the compiled metadata



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# File 'lib/ridley/chef/cookbook.rb', line 120

def compile_metadata(out = self.path)
  filepath = File.join(out, Metadata::COMPILED_FILE_NAME)
  File.open(filepath, "w+") do |f|
    f.write(metadata.to_json)
  end

  filepath
end

#compiled_metadata? ⇒ Boolean

Returns true if the cookbook instance has a compiled metadata file and false if it does not.

Returns:

  • (Boolean) 


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# File 'lib/ridley/chef/cookbook.rb', line 133

def compiled_metadata?
  manifest[:root_files].any? { |file| file[:name].downcase == Metadata::COMPILED_FILE_NAME }
end

#file_metadata(category, target) ⇒ Hash

Returns a Hash containing a name, path, checksum, and specificity key representing the metadata about a file contained in a Cookbook. This metadata is used when uploading a Cookbook’s files to a Chef Server.

Examples:

file_metadata(:root_files, "somefile.h") => {
  name: "default.rb",
  path: "recipes/default.rb",
  checksum: "fb1f925dcd5fc4ebf682c4442a21c619",
  specificity: "default"
}

Parameters:

  • category (Symbol) —

    the category of file to generate metadata about

  • target (String) —

    the filepath to the file to get metadata information about

Returns:

  • (Hash) —

    a Hash containing a name, path, checksum, and specificity key representing the metadata about a file contained in a Cookbook. This metadata is used when uploading a Cookbook’s files to a Chef Server.



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# File 'lib/ridley/chef/cookbook.rb', line 154

def file_metadata(category, target)
  target = Pathname.new(target)

  {
    name: target.basename.to_s,
    path: target.relative_path_from(path).to_s,
    checksum: self.class.checksum(target),
    specificity: file_specificity(category, target)
  }
end

#file_specificity(category, target) ⇒ String

Parameters:

  • category (Symbol)
  • target (Pathname)

Returns:

  • (String) 


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# File 'lib/ridley/chef/cookbook.rb', line 169

def file_specificity(category, target)
  case category
  when :files, :templates
    relpath = target.relative_path_from(path).to_s
    relpath.slice(/(.+)\/(.+)\/.+/, 2)
  else
    'default'
  end
end

#name ⇒ String

Returns the name of the cookbook and the version number separated by a dash (-).

example:

"nginx-0.101.2".

Returns:

  • (String) —

    the name of the cookbook and the version number separated by a dash (-).

    example:

    "nginx-0.101.2"



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# File 'lib/ridley/chef/cookbook.rb', line 184

def name
  "#{cookbook_name}-#{version}"
end

#reload ⇒ Object

Reload the cookbook from the files located on disk at ‘#path`.



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# File 'lib/ridley/chef/cookbook.rb', line 189

def reload
  clear_files
  load_files
end

#to_hash ⇒ Object 



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# File 'lib/ridley/chef/cookbook.rb', line 207

def to_hash
  result                 = manifest.dup
  result[:chef_type]     = CHEF_TYPE
  result[:name]          = name
  result[:cookbook_name] = cookbook_name
  result[:version]       = version
  result[:metadata]      = metadata.to_hash
  result[:frozen?]       = frozen
  result
end

#to_json(*args) ⇒ Object 



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# File 'lib/ridley/chef/cookbook.rb', line 218

def to_json(*args)
  result               = self.to_hash
  result['json_class'] = CHEF_JSON_CLASS
  result.to_json(*args)
end

#to_s ⇒ Object 



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# File 'lib/ridley/chef/cookbook.rb', line 224

def to_s
  "#{cookbook_name} (#{version}) '#{path}'"
end

#validate ⇒ Object

Raises:

  • (IOError) 


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# File 'lib/ridley/chef/cookbook.rb', line 194

def validate
  raise IOError, "No Cookbook found at: #{path}" unless path.exist?

  unless syntax_checker.validate_ruby_files
    raise Ridley::Errors::CookbookSyntaxError, "Invalid ruby files in cookbook: #{cookbook_name} (#{version})."
  end
  unless syntax_checker.validate_templates
    raise Ridley::Errors::CookbookSyntaxError, "Invalid template files in cookbook: #{cookbook_name} (#{version})."
  end

  true
end