Module: Coral::Resource

Defined in:
lib/coral_core/resource.rb

Constant Summary collapse

@@resource_groups =

Resource groups

{}

Class Method Summary collapse

Class Method Details

.add_members(group_name, resource_names) ⇒ Object 



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# File 'lib/coral_core/resource.rb', line 24

def self.add_members(group_name, resource_names)
  @@resource_groups[group_name] = [] unless @@resource_groups[group_name].is_a?(Array)
  
  unless resource_names.is_a?(Array)
    resource_names = [ resource_names ]
  end
  
  resource_names.each do |name|
    unless @@resource_groups[group_name].include?(name)
      @@resource_groups[group_name] << name
    end
  end
end

.clear_groups ⇒ Object 



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# File 'lib/coral_core/resource.rb', line 18

def self.clear_groups
  @@resource_groups = {}
end

.groups ⇒ Object 



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# File 'lib/coral_core/resource.rb', line 12

def self.groups
  return @@resource_groups
end

.namevar(type_name, resource_name) ⇒ Object 



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# File 'lib/coral_core/resource.rb', line 233

def self.namevar(type_name, resource_name) # Basically borrowed from Puppet (damn private methods!)
  resource = Puppet::Resource.new(type_name.sub(/^\@?\@/, ''), resource_name)
  
  if resource.builtin_type? and type = resource.resource_type and type.key_attributes.length == 1
    return type.key_attributes.first.to_s
  else
    return 'name'
  end
end

.normalize(type_name, resources, options) ⇒ Object

Resource operations



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# File 'lib/coral_core/resource.rb', line 41

def self.normalize(type_name, resources, options)
  clear_groups
  
  config    = Config.ensure(options)
  resources = Util::Data.value(resources)
  
  #dbg(resources, 'normalize -> init')
  
  unless Util::Data.empty?(resources)
    resources.keys.each do |name|
      #dbg(name, 'normalize -> name')
      if ! resources[name] || resources[name].empty? || ! resources[name].is_a?(Hash)        
        resources.delete(name)
      else
        normalize = true
        
        namevar = namevar(type_name, name)
        if resources[name].has_key?(namevar)
          value = resources[name][namevar]
          if Util::Data.empty?(value)
            #dbg(value, "delete #{name}")
            resources.delete(name)
            normalize = false
            
          elsif value.is_a?(Array)
            value.each do |item|
              item_name = "#{name}_#{item}".gsub(/\-/, '_')
              
              new_resource = resources[name].clone
              new_resource[namevar] = item
              
              resources[item_name] = render(new_resource, config)
              add_members(name, item_name)
            end
            resources.delete(name)
            normalize = false
          end  
        end
        
        #dbg(resources, 'normalize -> resources')
        
        if normalize
          resources[name] = render(resources[name], config)
        end
      end
    end
  end
  return resources
end

.render(resource, options = {}) ⇒ Object 



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# File 'lib/coral_core/resource.rb', line 93

def self.render(resource, options = {})
  resource = Core.string_map(resource.clone)
  config   = Config.ensure(options)
  
  resource.keys.each do |name|
    if match = name.match(/^(.+)_template$/)
      target = match.captures[0]
      
      #dbg(name, 'name')
      #dbg(target, 'target')
      
      config.set(:normalize_template, config.get("normalize_#{target}", true))
      config.set(:interpolate_template, config.get("interpolate_#{target}", true))
      
      resource[target] = Template.render(resource[name], resource[target], config)
      resource.delete(name)         
    end
  end
  
  #dbg(resource, 'render exit')
  return resource
end

.translate(type_name, resources, options = {}) ⇒ Object 



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# File 'lib/coral_core/resource.rb', line 118

def self.translate(type_name, resources, options = {})
  config    = Config.ensure(options)
  resources = Util::Data.value(resources)
  results   = {}
      
  #dbg(resources, 'resources -> translate')
  
  prefix = config.get(:resource_prefix, '')
  
  name_map = {}
  resources.keys.each do |name|
    name_map[name] = true
  end
  config[:resource_names] = name_map
  
  resources.each do |name, data|
    #dbg(name, 'name')
    #dbg(data, 'data')
    
    resource = resources[name]
    resource['before']    = translate_resource_refs(type_name, data['before'], config) if data.has_key?('before')
    resource['notify']    = translate_resource_refs(type_name, data['notify'], config) if data.has_key?('notify')
    resource['require']   = translate_resource_refs(type_name, data['require'], config) if data.has_key?('require')       
    resource['subscribe'] = translate_resource_refs(type_name, data['subscribe'], config) if data.has_key?('subscribe')
    
    unless prefix.empty?
      name = "#{prefix}_#{name}"
    end
    results[name] = resource
  end
  return results
end

.translate_resource_refs(type_name, resource_refs, options = {}) ⇒ Object 



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# File 'lib/coral_core/resource.rb', line 153

def self.translate_resource_refs(type_name, resource_refs, options = {})
  return :undef if Util::Data.undef?(resource_refs)
  
  config         = Config.ensure(options)
  resource_names = config.get(:resource_names, {})
  title_prefix   = config.get(:title_prefix, '')
  
  title_pattern  = config.get(:title_pattern, '^\s*([^\[\]]+)\s*$')
  title_group    = config.get(:title_var_group, 1)
  title_flags    = config.get(:title_flags, '')
  title_regexp   = Regexp.new(title_pattern, title_flags.split(''))
  
  allow_single   = config.get(:allow_single_return, true)    
  
  type_name      = type_name.sub(/^\@?\@/, '')
  values         = []
      
  case resource_refs
  when String
    if resource_refs.empty?
      return :undef 
    else
      resource_refs = resource_refs.split(/\s*,\s*/)
    end
      
  when Puppet::Resource
    resource_refs = [ resource_refs ]  
  end
  
  resource_refs.collect! do |value|
    if value.is_a?(Puppet::Resource) || ! value.match(title_regexp)
      value
        
    elsif resource_names.has_key?(value)
      if ! title_prefix.empty?
        "#{title_prefix}_#{value}"
      else
        value
      end
      
    elsif groups.has_key?(value) && ! groups[value].empty?
      results = []
      groups[value].each do |resource_name|
        unless title_prefix.empty?
          resource_name = "#{title_prefix}_#{resource_name}"
        end
        results << resource_name        
      end
      results
      
    else
      nil
    end           
  end
  
  resource_refs.flatten.each do |ref|
    #dbg(ref, 'reference -> init')
    unless ref.nil?        
      unless ref.is_a?(Puppet::Resource)
        ref = ref.match(title_regexp) ? Puppet::Resource.new(type_name, ref) : Puppet::Resource.new(ref)
      end
      #dbg(ref, 'reference -> final')       
      values << ref unless ref.nil?
    end
  end
  return values[0] if allow_single && values.length == 1
  return values
end

.type_name(value) ⇒ Object

Utilities



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# File 'lib/coral_core/resource.rb', line 225

def self.type_name(value) # Basically borrowed from Puppet (damn private methods!)
  return :main if value == :main
  return "Class" if value == "" or value.nil? or value.to_s.downcase == "component"
  return value.to_s.split("::").collect { |s| s.capitalize }.join("::")
end