the sherlock project purdue university, department of computer sciences sponsored by tellabs, inc....

The Sherlock ProjectPurdue University, Department of

Computer Sciences Sponsored by Tellabs, Inc.

Doug Clark - Group Leader

Tobey PasheilichRaj Talwar

Shahman BaluchCengiz Bayazit

2/15/99 Sherlock Project 2

Overview• The CS 406/407 class objectives

• The Sherlock Project

• Use-Cases and Sherlock

• The Sherlock Design

• System Behavior

• Work done last fall in CS 406

• Work done to date in CS 407

• Project Plan

• Q & A


The CS 406/407 Courses

• Fundamentals of Software Engineering

• Engineering a real software project

• Team-based environment

• Real-world problems and solutions

• Teleconferencing with the client

• Resume juice

• Grading policy


Project Sherlock

• System and Human Resource Locator

• General Description– Graphical, Client/Server-based, Platform-

independent Online Query Tool

• What is it Used For?– Locating People, Resources, and Facilities


Use Cases

• What is a Use Case Diagram?– Actors– Use Cases

• Primary Purposes– Decide/Describe Functional Requirements– Give Clear View of What System Does– Provide a Basis for System Tests


Sherlock Use Case Diagram

Search / Browse

Map Navigate

Notify

User: Kiosk

Modify Access

Modify View

Modify Data

User: Employee

User: Admin

Login


Web Browser

Search/BrowseCGI

Admin CGI

Map CGI

DirectoryServer

Flash Plug-In SuiteSpot

Map Generator

Sherlock Design


Web Browser

Search/BrowseCGI

Admin CGI

Map CGI

DirectoryServer


Map Generator

Sherlock Design


LDAP Directory

• Directory vs. Database

• Hierarchical Data Store

• User Authentication

• Access Control Lists

• Netscape SuiteSpot


Web Browser

Search/BrowseCGI

Admin CGI

Map CGI

DirectoryServer


Map Generator

Sherlock Design


Search/Browse Component

• Provides user with web interface • Does not require users to login• Will be accessible to every user • Allows users to request a view of Tellabs resources• Allows specific queries on various criteria


Workings of Search/Browse

• Client will interact with CGI component• CGI forwards request to LDAP directory service• Upon retrieval of results from LDAP, results are formatted for HTML display • Error messages are generated if no results are retrieved


Search/Browse

Display Result(s)

Web Browser

Search/BrowseCGI

DirectoryServer

Search Request

Send Request

Error: Invalid Format

Query Result

Format Result

Error: No Such Resource


Web Browser

Search/BrowseCGI

Admin CGI

Map CGI

DirectoryServer


Map Generator

Sherlock Design


Map Component Design

• Macromedia Flash

• Flash Generator

• Map Behavior

• Other Possibilities– Fly / Gd– Java Applets– Static Image Maps


Map NavigateWeb

BrowserMap CGI Directory

ServerMap

Generator

Request(level-n)

Call to Server()

Return(Map level-n)

Return(Map_data level-n)

Generate_map(Map_data level-n)

Pull(template)

Insert(Map_data level-n)


Web Browser

Search/BrowseCGI

Admin CGI

Map CGI

DirectoryServer


Map Generator

Sherlock Design


Administration Component Design

• High-level: Netscape Suitespot

• Low-level CGI:– Simple Interface– Security Features– LDAP Controls Security– Advanced Functionality– Cookies


Modify Data Component


Web Browser Admin CGI DirectoryServer

Requests Admin page

Presents Login screen

Sends name & password

Error: not using SSLAuthenticate user

Results of authentication

Error: Authentication failed

Search for user's object

Return object attributes

Determine user permissions on object

Format page based on attributes and permissions

Success, return cookie


Web Browser Admin CGI Directory Server

Choose attribute to modify

Success: attribute modify form

Send proposed changes

Verify permission to modify attribute

Error: no permission

Generate LDIF request

Send LDIF request

Return success codeShow results

Show modification form


Software Engineering Process:Stage 1

• Requirements Analysis

• Use Case Generation

• Design

• Design Testing

• Prototyping and Demonstration


Software Engineering Process:Stage 2

• Design Review

• Redesign

• Implementation

• System Testing

• Deployment


CS 406 Group A Experience• Confusion

– UML, Rational Rose, LDAP, SSL, Apache, Cookies, CGI, Java

• Design Development– Difficulties/Growth

• The Design– CGI– Sherlock Server– Problems

• Prototype


CS 406 Group B Experience: Initial Use Cases

ResourceQuery

ResourceReservation

User accountmaintenance

ScheduleAccess

DataMaintenance

MapAccess

Messaging

Admin.

Client

UsersEmployee


Components of Sherlock

Client

Comm.Gateway GUI

QueryParser

MapGenerator

LDAPOtherApplication


Revised Use Cases

User

Guest User

Form Search

Map Search

Resource Scheduling

Set User Preferences

Authorized User

Add Resource

Modify Resource Information

Remove Resource

User Account Maintenance

SysAdmin


Revised ArchitectureForm Query Display

Scheduling

LDAP Server

LDAP Directory

Sherlock Data Structures

Map Display


How it Worked

Client Applet

LdapSSLObject

TCP/IP

LDAPSERVER

LDAPSERVER

LJDK-3.0

ReferralBind

Connect

Create

Use


Final Use Cases

Resource Scheduling

Set User Preferences

Authorized User

Logoff

Form Search

Map Search

Logon

UserUser Account Maintenance

Remove Resource

Modify Resource Information

Add Resource

Sherlock Administr


CS 406 Group B: The Prototype• Demo on Thursday December 10, 1998• Features Demonstrated

– LDAP Functionality– Login,Add, Remove, Search

• Features Not Demonstrated– Map, SSL, Resource Data Types

• Language used in coding– Java (1.1)

• Other software packages used by the prototype :– Netscape LDAP JDK– Suitespot Server (3.xx)


Sherlock Project Plan

When WhatFebruary, March Coding, Development

March, April Clean-up and Testing

April 15th Product Preview

April 27th Final Demo!

May Tellabs Deployment


Team OrganizationComponent Responsible MembersAdministrate CGI Doug ClarkSearch / Browse CGI Shahman BaluchMap generation Cengiz Bayazit & Tobey PasheilichDirectory Server Cengiz Bayazit & Tobey Pasheilich

Tasks Responsible MembersGroup Leader Doug ClarkLDAP research and information Cengiz Bayazit & Tobey PasheilichUser Interface and Formatting Shahman BaluchMaps Cengiz Bayazit & Tobey PasheilichDocumentation maintenance and web page Raj Talwar


Features not in Current Design

• Search/Browse: Scheduling and Calendars

• Search/Browse: Interface with Pagers


Other Tasks to be Completed

• Obtain Server Licenses– Netscape SuiteSpot– Macromedia Flash and Generator

• LDAP and PerLDAP Research

2/15/99 Sherlock Project 36That’s all, folks...

Questions?

Comments?

the sherlock project purdue university, department of computer sciences sponsored by tellabs, inc....

Documents

sherlock project3

sherlock project19

sherlock project16 map

sherlock project usecases

sherlock project5 use

data component slide

user permissions

attribute error