Goal-Oriented Dependability Analysis (GODA)

A Contextual-Runtime Goal Model (CRGM) to PRISM model/PARAMetric formula generator to be used with the TAOM4E tool for TROPOS goal model.

Environment:

• Donwnload Eclipse 4.5 (http://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/mars2)
• Taom4e plugin (http://selab.fbk.eu/taom/) (see plugin instalation bellow)

Install Plugin Taom4e

Help > Install new Software > Add

• Name: Taom4e
• Location: http://selab.fbk.eu/taom/eu.fbk.se.taom4e.updateSite/

PDE ( Plug-in Development Environment (PDE) )

• Help > Eclipse Market Place > "PDE"

Building and Running RGMToPRISM

• clone the repo: $ git clone https://github.com/lesunb/RGMToPRISM/

• Patch Taom4e Plugin: In order to succesfull run the RGMToPRISM you need to patch Taom4e plugin. Do it by as follow: Replace the taom4eplatform.jar present in your /plugins/it.itc.sra.taom4e.platform_0.6.3.1 by the one in RGMToPRISM/lib .

Import RGMToPRISM project to eclipse

• Open Eclipse
• File > Import > Existing Project
• Find the folder where you cloned RGMToPRISM project
• Accept the defaults

Running the Plugin

• Right click in the project
• Run As > Eclipse Application, it should open another Eclipse with the active plugin.

Plugin first time setup

In the new Eclipse window, configure the plugin:

• Window -> Preferences -> TAOM4E -> PRISM GENERATOR

###Templates directory

• Uncheck 'Use standard'
• Click in 'Select' buton to select a Template directory path
• Select the folder inside the project: src/main/resources/TemplateInput

###Output directory

• Click in 'Select' buton to select a Output directory path
• Select any system folder. Ex: ~/workspace/CRGMToPRISM/dtmc

###PRISM/PARAM directory

• Click in 'Select' buton to select a Tools directory path
• Select any system folder. Ex: ~/workspace/CRGMToPRISM/tools
• Copy the binaries of both PRISM and PARAM to a specific folder without version suffixes:
  • PATH/prism
  • PATH/param

Using CRGMToPRISM

Create a CRGMToPRISM Project

• File > New Project

Create a Tropos Diagram

Right-click in the project folder (or subfolder) and:

• File > New > Other > Tropos Model

Genearting The Prism Model

• NOTE: Before generate the PRISM code, verify if thereisn't any TROPOS goal with missing labels.
• NOTE2: You could have goals in your model that you can't see in the graphical representation. Refer to the the TROPOS outline view an remove any not labeled goal.

Syntax used to lable Goals and Tasks

Goals and tasks must have a lable according to the rules bellow. The general form of a lable is:

• IDENTIFIER: DESCRIPTION [runtime annotation]

IDENTIFIER: DESCRIPTION

• Goals must use a prefix G followed by an unique numeric ID within the CRGM Goals set followed by a colon followed by a textual description . Ex: G1: Goal description, G2: Goal description, G3: Goal description

• Same rule used for Goals, except that:

  • Tasks must use a prefix T
  • Task level refers to the depth level after the goal they succeed
  • Level 1 tasks' prefix should be followed by an unique numeric ID within their context. Ex:
    • T1: Task description, T2: Task description, T3: Task description (for goal G2)
    • T1: Task description, T2: Task description, T3: Task description (for goal G3)
  • Second and subsequent level tasks prefix must be followed by the same unique numeric ID of its first level task, a dot and an unique numeric ID. Ex:
    • T1.1: Tsk Dsc, T1.2: Tsk dsc (descendants of T1)
    • T1.11: Tsk dsc, T1.12: Tsk dsc (descendantas of T1 -> T1.1)
    • T2.11: Tsk dsc, T2.12: Tsk dsc, T2.13: Tsk dsc... (descendants of T2 -> T2.1) and so forward.

[runtime annotation]

• Any non-leaf node that is refined/decomposed into two or more sub-nodes must have a runtime annotation as part of its lable
• Leaf-nodes and nodes refined by a single sub-node are trivial and require no runtime annotation; they may still receive a runtime annotation of type opt(E) in case their sub-node should be specified as optional
• runtime annotations must be inside brakets and be placed after DESCRIPTION. Ex:
• G1:Goal description [G2;G3#G4]
• runtime annotations may be separated from DESCRIPTION with space(s) and/or break line(s). As long as it is inside the brakets and after DESCRIPTION, it will be parsed

A CRGM example

![CRGM example] (https://github.com/lesunb/CRGMToPRISM/blob/master/docs/CRGM.png?raw=true)

Plugin Structure

• plugin.xml: The main file that describes the plugin. It contains information to help with the code generation, libraries, plugin dependencies, and extension points.
• build.properties: The file used for describing the build process. Mainly, this is used to specify the needed libraries.
• src: Plugin classes.

##Development

Updating an ANTLR grammar

• After updating any .g4 grammar file (for context or runtime annotations), use maven version 3 to recompile the java classes for your language (regex, parser, etc):
  • At the project root folder, use (linux): mvn package -e
  • Refresh the project folder in eclipse
  • Restart the workspace used for testing the framework

##Bugs? Doubts?

• Look for existing issues or create a new one describing your problem or doubt
• Contact the author by email
  • danilo.filgueira[at]polimi[dot]it
  • TODO: add other team members contacts here