governify-agreement-analyzer

Governify Agreement Analyzer

This is a Node.js API REST to analyze agreements defined by following the iAgree Specification.

Governify Agreement Analyzer provides some features, such as:

• An API for programmers to peform agreement analysis operations.
• An API REST to peform agreement analysis operations over a service.

Governify Agreement Analyzer executes all CSP by using the Reasoner tool defined on governify-csp-tools project, which in turn executes the CSP based on MiniZinc language.

Governify Agreement Analyzer has been developed on TypeScript and transpiled to JavaScript in order to be executed as a Node.js module. Also, it has been developed by following the project-template-nodejs development guidelines.

Install

$ npm install governify-agreement-analyzer

Basic usage

You can easily use this library in your project:

// Import
var AgreementAnalyzer = require("governify-agreement-analyzer");

// Configure analyzer
var config = {
    agreement: {
        file: "agreement.yaml"
    },
    reasoner: {
      type: "api",
      folder: "csp_files",
      api: {
        version: "v2",
        server: "https://minizinc.modules.designer.governify.io/module-minizinc",
        operationPath: "models/csp/operations/execute"
      }
    }
};

// Create an Analyzer instance
var analyzer = new AgreementAnalyzer(config);

// Execute an analysis operation
analyzer.isConsistent(function (err, sol) {
    if (err) {
        // manage error
        console.log(err);
    } else {
        console.log(sol);
    }
});

or deploy the analyzer as an API REST service:

// Import Agreement Analyzer API
var AgreementAnalyzerServer = require("governify-agreement-analyzer").api;
var api = new AgreementAnalyzerServer();
var app = require("connect")();

// Start API
api.initialize(app);

Once you deploy the API REST, you can now send a POST request over http://localhost:8080/api/v1/analysis/isConsistent with the configuration of Analyzer.

You can download agreement.yaml here.

Follow the analyzer configuration for more details.

Analyzer configuration

An example:

var configuration = { 
  "agreement": {
    "file": "agreement.yaml" // use 'url' property for remote agreements 
  },
  "reasoner": {
    "type": "local",
    "folder": "csp_files"
  }
}

Please, consider:

• Reasoner can be configured for local, remote or docker execution. Please, take a look at reasoner documentation to know which are the requirements to run reasoner in each environment.
• Use agreement.file property to define use an local agreement file located in your project. You can also use agreement.url to define a remote agreement file.

The JSON schema associated to analyzer configuration:

---

type: 'object'
properties:
  agreement:
    type: 'object'
    properties:
      file:
        type: 'string'
      url: 
        type: 'string'
      content: 
        type: 'object'
  reasoner:
    # Reasoner configuration of governify-csp-tools project
    type: 'object'
    properties:
      type:
        enum:
        - 'local'
        - 'api'
        - 'docker'
      folder:
        type: 'string' 
      api:
        type: 'object'
        properties:
          version:
            type: 'string'
          server:
            type: 'string'
          operationPath:
            type: 'string'
    required:
      - 'type'
      - 'folder'

Latest release

The version 0.6.6 is the latest stable version of governify-agreement-analyzer component. see release note for details.

For running:

• Download latest version from 0.6.6