Class: Riddl::Wrapper

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby/riddl/wrapper.rb,
lib/ruby/riddl/wrapper.rb,
lib/ruby/riddl/wrapper/declaration.rb,
lib/ruby/riddl/wrapper/description.rb,
lib/ruby/riddl/wrapper/layerchecker.rb,
lib/ruby/riddl/wrapper/messageparser.rb,
lib/ruby/riddl/wrapper/resourcechecker.rb,
lib/ruby/riddl/wrapper/declaration/tile.rb,
lib/ruby/riddl/wrapper/declaration/facade.rb,
lib/ruby/riddl/wrapper/description/access.rb,
lib/ruby/riddl/wrapper/description/resource.rb,
lib/ruby/riddl/wrapper/declaration/interface.rb,
lib/ruby/riddl/wrapper/description/message_and_transformation.rb

Defined Under Namespace

Classes: Declaration, Description, IOMessages, LayerChecker, MessageParser, ResourceChecker, WrapperUtils

Constant Summary collapse

VERSION_MAJOR =

{{{

1
VERSION_MINOR = 
0
VERSION = 
"#{VERSION_MAJOR}.#{VERSION_MINOR}"
DESCRIPTION = 
"http://riddl.org/ns/description/#{VERSION}"
DECLARATION = 
"http://riddl.org/ns/declaration/#{VERSION}"
XINCLUDE = 
"http://www.w3.org/2001/XInclude"
DESCRIPTION_FILE = 
"#{File.dirname(__FILE__)}/ns/description/#{VERSION_MAJOR}.#{VERSION_MINOR}/description.rng"
DECLARATION_FILE = 
"#{File.dirname(__FILE__)}/ns/declaration/#{VERSION_MAJOR}.#{VERSION_MINOR}/declaration.rng"
RIDDL_DESCRIPTION_SHOW = 
"#{File.dirname(__FILE__)}/ns/common-patterns/riddl-description/show.xml"
RIDDL_DESCRIPTION_RESOURCE_SHOW = 
"#{File.dirname(__FILE__)}/ns/common-patterns/riddl-description/resource-show.xml"
COMMON = 
"datatypeLibrary=\"http://www.w3.org/2001/XMLSchema-datatypes\" xmlns=\"#{DESCRIPTION}\" xmlns:xi=\"http://www.w3.org/2001/XInclude\""
CHECK = 
"<element name=\"check\" datatypeLibrary=\"http://www.w3.org/2001/XMLSchema-datatypes\" xmlns=\"http://relaxng.org/ns/structure/1.0\"><data/></element>"

Instance Method Summary collapse

Constructor Details

#initialize(name, get_description = false) ⇒ Wrapper

}}}



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# File 'lib/ruby/riddl/wrapper.rb', line 64

def initialize(name,get_description=false)
  #{{{
  @doc = nil

  fpath = nil
  if name.is_a?(XML::Smart::Dom)
    @doc = name
  else  
    if name.is_a?(String) && name =~ /^http:\/\/(www\.)?riddl\.org(\/ns\/common-patterns\/.*)/
      name = File.expand_path(File.dirname(__FILE__)) + $2
    end
    begin
      fh = name.respond_to?(:read) ? name : open(name)
      @doc = XML::Smart.string(fh.read)
      fh.close
      fpath = File.dirname(fh.path) if fh.is_a?(File) || fh.is_a?(Tempfile)
    rescue
      begin
        @doc = XML::Smart.string(name)
      rescue
        raise SpecificationError, "#{name.inspect} is no RIDDL description or declaration (neither a file, url or string)."
      end
    end  
  end  

  @doc.register_namespace 'x', XINCLUDE
  @doc.find('//x:include/@href').each do |i|
    if i.value =~ /^http:\/\/(www\.)?riddl\.org(\/ns\/common-patterns\/.*)/
      t = File.expand_path(File.dirname(__FILE__)) + $2
      i.value = t if File.exists?(t)
    end
  end
  fpath.nil? ? @doc.xinclude! : @doc.xinclude!(fpath)

  qname = @doc.root.qname
  @is_description = qname.href == DESCRIPTION && qname.name ==  'description'
  @is_declaration = qname.href == DECLARATION && qname.name ==  'declaration'

  @doc.register_namespace 'des', DESCRIPTION
  @doc.register_namespace 'dec', DECLARATION
  if @is_description && get_description
    rds = XML::Smart::open_unprotected(RIDDL_DESCRIPTION_SHOW)
    rrds = XML::Smart::open_unprotected(RIDDL_DESCRIPTION_RESOURCE_SHOW)
    @doc.root.prepend rds.find('/xmlns:description/xmlns:message')
    @doc.root.prepend rrds.find('/xmlns:description/xmlns:message')
    @doc.find("/des:description/des:resource").each do |r|
      r.prepend rds.find('/xmlns:description/xmlns:resource/*')
    end  
    @doc.find("/des:description//des:resource").each do |r|
      r.prepend rrds.find('/xmlns:description/xmlns:resource/*')
    end  
  end
  if @is_declaration  && get_description
    @doc.root.prepend("dec:interface",:name=>"riddldescription").add XML::Smart::open_unprotected(RIDDL_DESCRIPTION_SHOW).root
    @doc.root.prepend("dec:interface",:name=>"riddlresourcedescription").add XML::Smart::open_unprotected(RIDDL_DESCRIPTION_RESOURCE_SHOW).root
    @doc.root.find("dec:facade").first.append('dec:tile').append("layer",:name => "riddldescription")
    @doc.root.find("dec:facade").first.append('dec:tile').append("layer",:name => "riddlresourcedescription",:everywhere => 'true')
  end  

  @declaration = @description = nil
  #}}}
end

Instance Method Details

#check_message(params, headers, message) ⇒ Object 



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# File 'lib/ruby/riddl/wrapper.rb', line 212

def check_message(params,headers,message)
  description
  declaration
  #{{{
  return true if message.class == Riddl::Wrapper::Description::Star
  return true if message.nil? && params == []
  mp = MessageParser.new(params,headers)
  mp.check(message,true)
  #}}}
end

#declaration ⇒ Object 



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# File 'lib/ruby/riddl/wrapper.rb', line 127

def declaration
  #{{{
  if @declaration.nil? && @is_declaration
    @declaration = Riddl::Wrapper::Declaration.new(@doc)
  end
  @declaration
  #}}}
end

#declaration? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby/riddl/wrapper.rb', line 306

def declaration?; @is_declaration; end

#description ⇒ Object 



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# File 'lib/ruby/riddl/wrapper.rb', line 136

def description
  #{{{
  if @description.nil? && @is_description
    @description = Riddl::Wrapper::Description.new(@doc)
  end
  @description
  #}}}
end

#description? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby/riddl/wrapper.rb', line 307

def description?; @is_description; end

#io_messages(path, operation, params, headers) ⇒ Object 



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# File 'lib/ruby/riddl/wrapper.rb', line 159

def io_messages(path,operation,params,headers)
  #{{{
  description
  declaration
 
  req = @description.get_resource(path).access_methods if @is_description
  req = @declaration.get_resource(path).composition    if @is_declaration

  mp = MessageParser.new(params,headers)
  if req.has_key?(operation)
    if @is_description
      r = req[operation][0]
      r.select{|o|o.class==Riddl::Wrapper::Description::RequestInOut}.each do |o|
        return IOMessages.new(o.in, o.out) if mp.check(o.in)
      end
      r.select{|o|o.class==Riddl::Wrapper::Description::RequestTransformation}.each do |o|
        # TODO guess structure from input, create new output structure
        return IOMessages.new(Riddl::Wrapper::Description::Star.new, Riddl::Wrapper::Description::Star.new)
      end
      r.select{|o|o.class==Riddl::Wrapper::Description::RequestStarOut}.each do |o|
        return IOMessages.new(Riddl::Wrapper::Description::Star.new, o.out)
      end
      r.select{|o|o.class==Riddl::Wrapper::Description::RequestPass}.each do |o|
        return IOMessages.new(Riddl::Wrapper::Description::Star.new, Riddl::Wrapper::Description::Star.new)
      end
      r.select{|o|o.class==Riddl::Wrapper::Description::WebSocket}.each do |o|
        return IOMessages.new(nil,nil,nil,nil)
      end
    end  
    if @is_declaration
      r = req[operation]
      r.select{|o|o.result.class==Riddl::Wrapper::Description::RequestInOut}.each do |o|
        return IOMessages.new(o.result.in, o.result.out, o.route, o.result.interface) if mp.check(o.result.in)
      end
      r.select{|o|o.result.class==Riddl::Wrapper::Description::RequestTransformation}.each do |o|
        # TODO guess structure from input, create new output structure
        return IOMessages.new(Riddl::Wrapper::Description::Star.new, Riddl::Wrapper::Description::Star.new, o.route, o.result.interface)
      end
      r.select{|o|o.result.class==Riddl::Wrapper::Description::RequestStarOut}.each do |o|
        return IOMessages.new(Riddl::Wrapper::Description::Star.new, o.result.out, o.route, o.result.interface)
      end
      r.select{|o|o.result.class==Riddl::Wrapper::Description::RequestPass}.each do |o|
        return IOMessages.new(Riddl::Wrapper::Description::Star.new, Riddl::Wrapper::Description::Star.new, o.route, o.result.interface)
      end
      r.select{|o|o.result.class==Riddl::Wrapper::Description::WebSocket}.each do |o|
        return IOMessages.new(nil,nil,nil,o.result.interface)
      end
    end  
  end  
  return nil
  #}}}
end

#load_necessary_handlers! ⇒ Object 



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# File 'lib/ruby/riddl/wrapper.rb', line 241

def load_necessary_handlers!
  #{{{
  @doc.find("//des:parameter/@handler").map{|h|h.to_s}.uniq.each do |h|
    if File.exists?(File.dirname(__FILE__) + '/handlers/' + File.basename(h) + ".rb")
      require File.expand_path(File.dirname(__FILE__) + '/handlers/' + File.basename(h))
    end
  end
  #}}}
end

#load_necessary_roles! ⇒ Object

}}}



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# File 'lib/ruby/riddl/wrapper.rb', line 250

def load_necessary_roles!
  #{{{
  @doc.find("//des:resource/@role").map{|h|h.to_s}.uniq.each do |h|
    h = Protocols::HTTP::Generator::escape(h)
    if File.exists?(File.dirname(__FILE__) + '/roles/' + h + '.rb')
      require File.expand_path(File.dirname(__FILE__) + '/roles/' + h)
    end
  end
  #}}}
end

#paths ⇒ Object 



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# File 'lib/ruby/riddl/wrapper.rb', line 261

def paths
  #{{{
  description
  declaration
  tmp = []
  tmp = @description.paths if @is_description 
  tmp = @declaration.paths if @is_declaration
  tmp.map do |t|
    [t[0],Regexp.new("^" + t[0].gsub(/\{\}/,"[^/]+") + (t[1] ? '\/?' : '\/?$'))]
  end
  #}}}
end

#resource_description(path) ⇒ Object

}}}



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# File 'lib/ruby/riddl/wrapper.rb', line 153

def resource_description(path)
  req = @description.get_resource(path).description_xml(@doc.namespaces) if @is_description
  req = @declaration.get_resource(path).description_xml(@doc.namespaces) if @is_declaration
  req.to_s
end

#role(path) ⇒ Object

{{{



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# File 'lib/ruby/riddl/wrapper.rb', line 145

def role(path) #{{{
  description
  declaration
  return @description.get_resource(path).role if @is_description
  return @declaration.get_resource(path).role if @is_declaration
  nil
end

#validate! ⇒ Object 



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# File 'lib/ruby/riddl/wrapper.rb', line 223

def validate!
  #{{{
  if @is_description
    xval = @doc.validate_against(XML::Smart.open_unprotected(DESCRIPTION_FILE))
    xchk = ResourceChecker.new(@doc).check
    puts xchk.join("\n") unless xchk.empty?
    return xval && xchk.empty?
  end
  if @is_declaration
    xval = @doc.validate_against(XML::Smart.open_unprotected(DECLARATION_FILE))
    xchk = LayerChecker.new(@doc).check
    puts xchk.join("\n") unless xchk.empty?
    return xval && xchk.empty?
  end
  nil
  #}}}
end