Dragan Bojić University of Belgrade Experience from the maintenance phase in international projects

Dragan Bojić, Experience from the maintenance phase in international projects 2 General Projects Characteristics  Both for software market and for known customer (outsourcing)  Geographically distributed development/testing/deployment Most communication via Internet ( s, ftp,...) Offline integration (no web VCS)  Iterative development Alpha release (Prototype) Beta release Production release 1.0 Production release (patch for user XY) Production release 1.1 (new functionality)...  „maintenance“ – moving from one release to another

Dragan Bojić, Experience from the maintenance phase in international projects 3 Supporting processes for the maintenance phase  Configuration management & Change Request Management  Purpose: „control change to, and maintain integrity of, project artifacts“ (Rational Unified Process)  Artifact: intermediate or final work products produced and used during a project Models Documents Source code...

Dragan Bojić, Experience from the maintenance phase in international projects 4 Configuration Management  Process organization at RistanCASE, GmbH About 30 team members Telejob working environment  Offline integration

Dragan Bojić, Experience from the maintenance phase in international projects 5 CM with offline integration – team member actions Team Member NN baseline DAC_5_0_A100 NN's Workspace branch A100NN1 delta file baseline DAC_5_0_A100 1: Store baseline from delivery media to local repository with tailoring 2: Checkout to local workspace 4: Make some changes 5: Checkin to repository 3: Verify & resolve integration conflicts FTP server 6: Send delta for integration Local CM repository

Dragan Bojić, Experience from the maintenance phase in international projects 6 CM with offline integration Integrator baseline DAC_5_0_A100 Integration Workspace branch A100NN1 delta file 1: Send integration notice 2: Store deltas to local repository 4: Merge NN1 changes 7: Checkin new baseline 5: Merge XY4 changes 6: Resolve integration conflicts FTP server 8: Create distribution Local CM repository branch A100XY4 delta file baseline DAC_5_0_A101 3: Checkout to workspace

Dragan Bojić, Experience from the maintenance phase in international projects 7 Configuration Management- Access Control  A Workspace: defines access rights to individual artifacts (not accessible at all, read only, read-write).  Associated with groups of team members: wDEV – developers workspace (source code files, models, etc) wDEV_SubsystemX – part od wDEV assoc with a particular subsystem (component) wTST – test team member workspace (test specs, test cases, etc) wDOC – user documentation workspace wMGR – manager workspace (plans, reports, etc) .access file for mapping project directories and individual artifacts to workspaces: di\adg\di\cadg\lib | wDEV wDEV_ADG+ di\adg\di\cadg\mdl\configuration.cat | wDEV_ADG .workspace file for mapping workspaces to team members DB wMNG wDEV wDEV_SA wDEV_MTR wDOC DG wDEV wDEV_PM wDEV_UDA wDEV_SUP wDEV_SC  Chmod like tool for integrator to manage access rigths

Dragan Bojić, Experience from the maintenance phase in international projects 8 Configuration Management- Baseline and branch identification DAC_5_0_A001NN2 Project Name (DAC) Mayor release (5) Minor release (0) Promotion level (explained below) (A) Baseline identifier (001) For branches, initials of team member and branch number (NN2)  Promotion level: an attribute of the baseline Indicates its quality or stability A – alpha (internal integration, instable working baseline) B – beta (distributed to selected outside users) R – release candidate (released after testing and decision of product team)

Dragan Bojić, Experience from the maintenance phase in international projects 9 Change Management  Change Request: submitted request for new features, enhancements, defect elimination,...  Submitted by customers (via support), developers, testers, managers,...  Several hundred change requests between two mayor releases  Need to formalize and systematically process each

Dragan Bojić, Experience from the maintenance phase in international projects 10 Change M. - Assesment CR SubmitterProject ManagerProduct Team Sends RCLS mail - topic #50CRALL# Forms 1 and 2 Assigns id NNNN, opens topic #36CRNNNN# Status: Open Assesment Sends request via topic #36CRNNNN# forms 1 i 2 Status: Open need more info Submitter replies Study CR PT decides Fills in form 3, status Dissaproved Fills in form 3, status Deffered Decision Sends notice via topic #36CRNNNN# deferred rejected deferred Status: Approved, fills in form 3 Planning the realization rejected accepted Form 1-3 Status: PT to decide

Dragan Bojić, Experience from the maintenance phase in international projects 11 Chg M. - Realization CR SubmitterProject ManagerImplementer Inititates implementation via #36CRNNNN/DEV# (form 4) Status Assigned Assesment, then implementation Completion report (succeed fail) via #36CRNNNN/DEV# form 4 Status Assesment more activities needed Sends report (Form 4) via #36CRNNNN# Status: Rejected Verifier Status: Completed form 5 u #36CRNNNN/SQA# Failure Verification Completion report (succed, fail) via #36CRNNNN/SQA# (form 2) Success Status assesment Updates plans Send report (Form 4) via #36CRNNNN# Status: Closed Verification Passed Sends Report (form 4) via #36CRNNNN/ DEV# Status: Verification Failed Verif. failed

Dragan Bojić, Experience from the maintenance phase in international projects 12 Chg M. – Change Request States

Dragan Bojić, Experience from the maintenance phase in international projects 13 Form 1: for CR Submitter

Dragan Bojić, Experience from the maintenance phase in international projects 14 Form 2: for Verifier

Dragan Bojić, Experience from the maintenance phase in international projects 15 Form 3: for Managers

Dragan Bojić, Experience from the maintenance phase in international projects 16 Form 4: for Implementer