Class: PoolParty::ChefResolver

Inherits:
DependencyResolver show all
Defined in:
lib/poolparty/dependency_resolver/chef_resolver.rb

Instance Attribute Summary

Attributes inherited from DependencyResolver

#properties_hash, #the_cloud

Instance Method Summary collapse

Methods inherited from DependencyResolver

compile, #initialize, permitted_resource_options, #permitted_resource_options, #tf

Constructor Details

This class inherits a constructor from PoolParty::DependencyResolver

Instance Method Details

#_compile(props = @properties_hash, tabs = 0, default_namespace = "poolparty") ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 35

def _compile(props=@properties_hash, tabs=0, default_namespace="poolparty")
  cld_name = default_namespace
  comp(cld_name, props, tabs)
end

#base_dir(nm = "poolparty") ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 67

def base_dir(nm="poolparty")
  @base_dir ||= "#{Default.tmp_path}/dr_configure/chef/cookbooks/#{nm}"
end

#before_filter_check_on_hash(hsh, nm) ⇒ Object

Check if the hash has content and that the content exists here. This is used to provide a check



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 157

def before_filter_check_on_hash(hsh, nm)
  if hsh.has_key?(:content)
    cont = hsh.delete(:content)
    temp_file = "#{base_dir}/templates/default/#{nm}.erb"
    
    ::FileUtils.mkdir_p(::File.dirname(temp_file)) unless ::File.directory? temp_file
    ::File.open(temp_file, "w+") {|f| f.print cont }
    
    hsh.merge!({:source => "#{nm}.erb"})
  end
  # 
  hsh.delete(:require) if hsh.has_key?(:require)
  hsh.delete(:name) # we don't need the names in the methods
  hsh
end

#build_base_recipe_directory(nm) ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 52

def build_base_recipe_directory(nm)
  dputs "Making new #{base_dir}"
  ::FileUtils.mkdir_p "#{base_dir}"
  
  [ "recipes", "templates", "attributes" ].each do |bdir|
    ::FileUtils.mkdir_p "#{base_dir}/#{bdir}" #unless ::File.directory? "#{base_dir}/#{bdir}"
  end
  
  ::File.open("#{base_dir}/attributes/poolparty.rb", "w") do |f| 
    f << "poolparty Mash.new unless attribute?('poolparty')\n"
  end
  
  base_dir
end

#comp(cld_name, props, tabs) ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 40

def comp(cld_name, props, tabs)
  
  default_recipe = [ 
    resources_to_string(props[:resources],tabs),
    services_to_string(props[:services],tabs)
  ].join("\n")

  ::File.open("#{base_dir}/recipes/default.rb", "w+") {|f| f << default_recipe }
  
  default_recipe
end

#compile(props = @properties_hash, tabs = 0, default_namespace = "poolparty") ⇒ Object

Compile and add to the zipper



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 26

def compile(props=@properties_hash, tabs=0, default_namespace="poolparty")
  base_dir(default_namespace)
  build_base_recipe_directory( default_namespace )
  
  # ::Suitcase::Zipper.add( base_dir, "chef/cookbooks")
  
  _compile(props, tabs, default_namespace)
end

#handle_actions(key, value) ⇒ Object

Handle ensures



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 189

def handle_actions(key,value)
  case key
  when :ensures
    value.nil? ? nil : "action :#{value}"
  else
    nil
  end
end

#handle_chef_types(ty) ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 110

def handle_chef_types(ty)
  case ty.to_sym
  when :exec
    "execute"
  when :file
    "template"
  when :symlink
    "link"
  when :line_in_file
    "execute"
  when :chef_deploy_definition
    "deploy"
  else
    ty
  end
end

#handle_print_service(klassname, klassarray, tabs) ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 140

def handle_print_service(klassname, klassarray, tabs)
  case klassname
  when nil
    nil
  else
    kname = klassname.to_s.gsub(/pool_party_/, '').gsub(/_class/, '')
    str = "\n#{tf(tabs)}# #{kname}\n"
    str << "#{tf(tabs)}"
    klassarray.each do |hsh|
      str << _compile(hsh,tabs+1, klassname)
    end        
    str << "#{tf(tabs)}"
  end
end

#handle_print_variable(varhash) ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 95

def handle_print_variable(varhash)
  o = []
  if varhash[:namespace]
    o << ["\n#{varhash[:namespace]} Mash.new unless attribute?('#{varhash[:namespace]}')"]
    o << "#{varhash[:namespace]}[:#{varhash[:name]}] = #{to_option_string(varhash[:value])}\n"
  else
    o << "poolparty[:#{varhash[:name]}] = #{to_option_string(varhash[:value])}"
  end
  ::File.open("#{base_dir}/attributes/poolparty.rb", "a+") do |f| 
    f << o.join("\n")
    f << "\n"
  end
  ""
end

#hash_flush_out(hash, pre = "", post = "") ⇒ Object

flush out the hash into something meaningful



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 128

def hash_flush_out(hash, pre="", post="") 
  hash.map do |k,v|
    if o = handle_actions(k,v)
      o
    else
      key = to_chef_key(k)
      res = to_option_string(v)
      (key.nil? || res.nil?) ? nil : "#{pre}#{key} #{res}#{post}"
    end
  end
end

#options_to_string(opts, tabs = 0) ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 71

def options_to_string(opts,tabs=0)
  handle_print_variables(opts) if opts
end

#resources_to_string(opts, tabs = 0) ⇒ Object 



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 75

def resources_to_string(opts,tabs=0)
  out = []        
  out << opts.map do |resource|
    case ty = resource.delete(:pp_type)
    when "variable"
      handle_print_variable(resource)
    when "chef_recipe"
      "#{tf(tabs)}include_recipe #{to_option_string(resource.name)}"
    when "chef_library"
      "#{tf(tabs)}require #{to_option_string("/etc/chef/lib/#{resource.name}")}"
    else
      real_type = handle_chef_types(ty)
      real_name = resource[:name]
      res = before_filter_check_on_hash(resource, real_name)          
      "#{tf(tabs)}#{real_type} \"#{real_name}\" do\n#{tf(tabs+1)}#{hash_flush_out(res).compact.join("\n#{tf(tabs+1)}")}\n#{tf(tabs)}end"
    end
  end      
  out.join("\n")
end

#services_to_string(opts, tabs = 0) ⇒ Object

Turn the services into strings using the handle_print_service method Here we can strip out non-meaningful chef services



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 175

def services_to_string(opts,tabs=0)
  if opts
    str = ""
    [:control_statements, :conditional].each do |k|
      opts.delete(k)
    end
    opts.map do |klassname, klasshash|
      str << handle_print_service(klassname, klasshash, tabs)
    end
    str
  end
end

#to_chef_key(key) ⇒ Object

Take the keys from the resource hash and turn them into chef-like meaningful keys. This is how helpers are created for chef



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 200

def to_chef_key(key)
  case key
  when :ensures
    nil
  when :reloads
    "notifies :reload,"
  when :calls
    "notifies :run,"
  when :stops
    "notifies :stop,"
  when :starts
    "notifies :start,"
  when :enable
    nil
  when :if_not
    "not_if"
  when :not_if
    "not_if"
  when :only_if
    "only_if"
  else
    "#{key}"        
  end
end

#to_option_string(obj) ⇒ Object

Resolve the value of the resource hash into a meaningful chef value. Resources are turned into resource strings here



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# File 'lib/poolparty/dependency_resolver/chef_resolver.rb', line 227

def to_option_string(obj)
  case obj
  when PoolParty::Resources::Resource
    "resources(:#{handle_chef_types(obj.class.to_s.top_level_class.downcase.to_sym)} => \"#{obj.name}\")"
  when Fixnum
    "#{obj.to_i}"
  when String
    "\"#{obj}\""
  when Array
    # If we are sending a notifies with a second argument
    if obj[1] && [:immediately, :delayed].include?(obj[1])
      "#{to_option_string(obj[0])}, :#{obj[1]}"
    else
      "[ #{obj.map {|e| to_option_string(e) }.reject {|a| a.nil? || a.empty? }.join(", ")} ]"
    end        
  when nil
    nil
  when Symbol
    ":#{obj}"
  when Hash
    "#{obj.map {|k,v| ":#{k} => #{to_option_string(v)}" unless v == obj }.compact.join(",\n")}"
  else
    "#{obj}"
  end
end