Modern Environment for zOS Development.pdf
0 likes11 views
Modern Environment for zOS Development
Modern Environment for zOS Development.pdf
- 1. Modern environment for z/OS development Rosalind Radcliffe Venkat Balabhadrapatruni Feb 4, 2013 Session: 12503 Insert Custom Session QR if Desired.
- 2. 2 2 Four key barriers preventing optimal return on IT investments Decades of application investments Islands of skills, languages and platforms Poorly integrated teams Infrastructure inefficiency “We need to enable our teams to collaborate across platforms, languages, and environments.” “We need a cost effective way to improve our infrastructure efficiency and free up capacity to handle more workload.” “We don’t understand the effort, risk and impact of modernizing our legacy applications.” “Our skills gap keeps growing. How do we stay current with all the language and technology changes?”
- 3. 3 3 Overview of Supported Production Scenario Project Manager or Support Team has submitted Project Change Request … 4: Promote and deploy enhancement - Promote changes from development to test - Create update package with set of changes from development - Deploy update package to the test environment 3: Implement required changes, build and deliver - Analyze source to identify modifications - Implement and test modifications - Perform personal build and deliver new features 2: Review and Approve Change Request - Review analysis for change request and approve for scheduling - Create development work item(s) for implementation - Add work to project plan 1: Review Change Request - Analyze application to be changed - Size/scope effort and risk of change - Submit to Project Manager for review, approval and scheduling Analyst/SME Lead Developer/ Release Engineer Project Manager Application Developer 5. Track Project Status with Rational Team Concert Dashboard
- 4. 4 4 Development Life Cycle • Define the tasks • Create a plan • Create a work item • Assign the work item to a developer • Load the project/source artifacts from SCM • Navigate, Analyze, Edit, Syntax check source code • Compile • Quality assurance • Debug • Code Coverage • Code review • Unit Testing • Check-in/Deliver the source code • Build CLM RDz RTC RDz RD&T RTC RTC RDz Source Dev Build Planning Governance/Unit test
- 5. 5 5 Decreases development time by 15 to 20 percent “Building an agile development team requires a multiplatform approach, and Sodifrance uses Rational Developer for System z and Rational Team Concert for System z to help application teams synchronize their efforts and improve collaboration. Rational on System z offers a powerful and valuable combination for any company that wants to boost its development team’s productivity.” — Hugh Smith, Project Manager, Sodifrance Collaborative application lifecycle management Deploy new, common team infrastructure for source control, change management and build that empowers your team with integrated collaboration, process automation and reporting Requirements Project/Planning Development Testing Unify
- 6. 6 6 Rational Team Concert – A single tool, many capabilities • Source Control Planning Work Items Method Enforcement and Automation Dashboards & Reporting Builds – Continuous Integration
- 7. 7 7 Query Storage Collaboration Discovery Administration: Users, projects, process JAZZ SERVICES Business Partner Extensions Your Extensions Rational Team Concert: Built on an open, Web 2.0 platform Supporting a broad range of desktop clients, IDE’s and languages Rational Developer for System z Rational Software Architect Rational Systems Developer Rational Business Developer Rational Developer for Power Eclipse Clients Web Clients Visual Studio Microsoft .NET Clients Rational Desktop Clients Rational Team Concert Web 2.0 Jazz Client Extensions Eclipse Platform IBM Rational Extensions Best Practices Presentation: Mashups
- 8. 8 8 Rational Developer for System z: An Integrated Development Environment for System z Rational Developer for System z A modern IDE for productive development of cross-platform applications written in COBOL, PL/I, ASM, Java, EGL or C/C++ in System z CICS, IMS, DB2, Batch applications Access to typical System z sub-system functionality in z/OS, CICS, IMS, DB2, WAS Integration with Debug Tool for Development and Test Integration with Fault Analyzer for Dump Analysis Integration with File Manager for file and test data handling Integration with Asset Analyzer for Application Understanding and Impact Analysis Integration with Team Concert for Lifecycle and Source Management Integration with RD&T for flexible access to System z environment
- 9. 9 9 The Benefits of a RDz's IDE Instead of maneuvering to access panels and working sequentially, in RDz the functionality you need is always in-focus – you work concurrently Access Datasets + Dataset Management Access Jobs (Outlist facility) Edit a program Dataset Statistics Submit a Compile File Compare File Search
- 10. 10 10 Traditional development and Enterprise web services Enterprise Service Tools Single service projects Top down, bottom up, and meet in the middle web service enablement for CICS, IMS, and Batch/TSO environments. Service flow projects Graphical composition of CICS applications chained together to form a new business service. Enable Enterprise Applications for Mobile and Web Supports traditional development/maintenance • Cobol, PL/I, Assembler, JCL Supports modern architecture development
- 11. 11 11 Rational Development and Test Environment for System z The ultimate in modern application development for System z Note: This Program is licensed only for development and test of applications that run on IBM z/OS. The Program may not be used to run production workloads of any kind, nor more robust development workloads including without limitation production module builds, pre-production testing, stress testing, or performance testing. RDz & ISPF user ISPF user RDz user RDz user RDz user COBOL, PL/I, C++, Java, EGL, Batch, Assembler, Debug Tool x86 PC running Linux RDz user IMS z/OS WAS DB2 MQ CICS Increase availability of z/OS testing environment and resources Liberate developers to rapidly prototype new applications Develop and test System z applications anywhere, anytime! Eliminate costly delays by reducing dependencies on operations staff Improve quality and lower risk via automation, measurement, and collaboration Focus on what is required for the change at hand, then scale
- 12. 12 12 Centralized administration Push to Client - Configuration Files management and product updates Desktop configuration setup • upon connecting to the host, a user is notified if they have incoming changes to their configuration files. Product updates • triggered from central place to all the users connecting to the host An Export Wizard – to help an Admin configure various settings on RDz client and upload it to a central location. Settings are grouped by function into configuration files such as remote connections or system mappings.
- 13. 13 13 Development Life Cycle • Define the tasks • Create a plan • Create a work item • Assign the work item to a developer • Load the project/source artifacts from SCM • Navigate, Analyze, Edit, Syntax check source code • Compile • Quality assurance • Debug • Code Coverage • Code review • Unit Testing • Check-in/Deliver the source code • Build CLM RDz RTC RDz RD&T RTC RTC RDz Source Dev Build Planning Governance/Unit test
- 14. 14 Any process: Executable and repeatable Use ONE tool to support both agile and non-agile Process Architect Variant #1 Variant #2 Variant #3 Project Manager Scrum Waterfall Iterative Project C Waterfall Analyst Release Engineer Developer Quality Professional Project B Analyst Release Engineer Developer Quality Professional Project A Product Owner Scrum Master Team Member Agile Iterative Formal Project Mgt Template Scrum Template 14
- 15. 15 Multiple plan views facilitate continuous planning
- 16. 16 Progress Tracking - Everyone can see live project status 16
- 17. 17 17 In-context Collaboration – Team View Team Central Shows what is happening on project: • News & events • What’s being worked on • Changes Configurable (RSS feeds) - New kinds of information easily added Personalized, Persistent - Each team member can tailor to their needs 17
- 18. 18 18 Development Life Cycle • Define the tasks • Create a plan • Create a work item • Assign the work item to a developer • Load the project/source artifacts from SCM • Navigate, Analyze, Edit, Syntax check source code • Compile • Quality assurance • Debug • Code Coverage • Code review • Unit Testing • Check-in/Deliver the source code • Build CLM RDz RTC RDz RD&T RTC RTC RDz Source Dev Build Planning Governance/Unit test
- 19. 19 19 RDz Source Code Integration RDz Rational Team Concert SCLM Rational ClearCase Framework for other SCMs CA Endevor Rational’s Strategic Source Code tooling is RTC and RDz provides tight integration RDz offers integration into a variety of other Source Code Management (SCM) tools as well as a framework for creating SCM integration on your own (CARMA) Variety of vendors supply plug-ins to RDz to provide easy access to processes and source code controlled by their products
- 21. 21 21 Load the source artifacts 21
- 22. 22 RDz and RTC together • Once the project is loaded, it will appear in the RDz z/OS projects view • RDz augments the development productivity & experience • Appropriate editors (COBOL, maps, etc.) and functions (content assist, real time syntax check, etc.) • High value functions (Enterprise web services, SFM, Code review, Unit testing, program analysis/control flow etc.)
- 23. 23 23 Create a Property Group Generate property groups for your project based on RTC build definition Allows RDz to resolve the dependencies and thus offer all the tooling
- 24. 24 24 Navigate datasets and jobs live on zOS • Connect to multiple hosts concurrently • Respects existing security configurations and user IDs • Search, filter, browse, edit, compare, migrate, and allocate new MVS datasets and USS files • Copy source code, members, or datasets between systems with a few mouse clicks. • Access JES queues submit jobs, view job state, and open output spools • Submit TSO or USS commands • Add datasets and members into projects to group applications and work items together logically • Open an emulator in the IDE to configured hosts
- 25. 25 25 Edit capabilities in RDz • RDz at a high level has different types of editors • Lpex Editor • Supports editing of COBOL, PLI, HLASM, JCL, C/C++, Rexx etc. • Provides ISPF like edit experience including prefix commands, command line and even look and feel • Supports advanced edit functions for COBOL, PLI and HLASM like real time syntax checking, content assist • COBOL and PLI advanced editors • Based on the Eclipse editor infrastructure, provide more advanced edit capabilities like quick fixes, hyper- linking, hover, easy navigation between various edit sessions or within the same edit session. • Supports real time syntax checking, content assist, key word highlighting etc.
- 26. 26 26 Edit capabilities in RDz • RDz at a high level has different types of editors • WYSYWIG editors • Creation, edit of BMS and MFS maps • Has the source and design view – allows drag and drop of fields in the design view which generates the appropriate source • Data Editors • Edit QSAM data
- 27. 27 27 Editor Productivity features - Develop code more efficiently Find all statements and variables (including from COPYBOOKS or INCLUDE)
- 28. 28 28 Editor Productivity Features – real time syntax checking Real-time syntax check without requiring code compile or save
- 29. 29 29 Editor Productivity Features Provide "Open Called Program" action Hyper linking support for Open/ Browse/ View copybooks/include files Show In > Outline action to COBOL and PL/I Editor
- 30. 30 30 Editor Productivity Features Mark “Write occurrences” capability to the supported EXEC statements Occurrences within EXEC statements known to be “writes” are highlighted with a BROWN background • All “read” statements will continue to be highlighted with a GREY background
- 31. 31 31 Search for Occurrences Action Once a variable is selected the user triggers the “Find Occurrences” action using the Menu under search or keyboard shortcut “Ctrl+Shift+U” The occurrences are shown in the “Search results” page
- 32. 32 32 Copy book and Include file resolution • Hover over a COPY book name or a INCLUDE file to see the contents • Pressing F2 when hovering will “pin” the hover as shown • The window can then be dragged to expand, the Pencil icon shown below can be used to edit the copy book
- 33. 33 33 JCL Template Support Templates are provided for standard JCL statements, and users can create their own Templates When editing .jcl file using “Ctrl+Space” in the editor will trigger a pop list allowing the user to select the template to insert into the editor contents
- 34. 34 Enhanced Application Quality & Structure Analysis • Application Analysis • Control flow diagrams for COBOL programs, Graphical representation of the program flow with links to the source • Helps identify and highlight potential unreachable code
- 35. 35 Enhanced Structure Analysis – Data Element Table
- 36. 36 Pending Changes • If you want finer grained control on your SCM operations, then the Pending Changes view is for you • Check in, deliver, accept changes • Suspend, resume, discard changes • Replace, reload out-of-sync • Resolve conflicts • Open change sets and work items via the web client
- 37. 37 Traceability : Check-in History • Someone made a costly mistake merging and you want to understand exactly where the mistake was made • Problem : Traditional history commands & UI only show before/after & merge states for a change set … it does not show intermediates • Solution : Use Check-in history in Eclipse, CLI or .NET clients
- 38. 38 38 Development Life Cycle • Define the tasks • Create a plan • Create a work item • Assign the work item to a developer • Load the project/source artifacts from SCM • Navigate, Analyze, Edit, Syntax check source code • Compile • Quality assurance • Debug • Code Coverage • Code review • Unit Testing • Check-in/Deliver the source code • Build CLM RDz RTC RDz RD&T RTC RTC RDz Source Dev Build Planning Governance/Unit test
- 39. 39 39 Debug Multiple Runtimes – using IBM Debug tool • Use the cross-platform debugger to debug end-to-end systems as they execute in the runtime • IMS • CICS • DB2 • Batch • WAS • Java • From the workstation: • View executing source code • Step through host code line-by-line • Set breakpoints • Alter working storage values • Alter register values • Etc… • Debug zOS and distributed code in the same interface even stepping between runtimes and platforms!
- 40. 40 40 Enhanced Application Quality – Code Coverage • Line Level Code Coverage - provides tools to measure and report on test coverage of an application • Indicating what source code lines were tested and remain to be tested
- 41. 41 41 Innovative Debugging using Collaboration • Collaborative debug with RDz and IBM Debug Tool via the Rational Team Concert Server! • Share breakpoints and monitors with other team members • Transfer debug session control to other users • Save debugging sessions for later retrieval in the team environment • Works for WAS (JEE) and System z applications
- 42. 42 42 Enhanced Quality & Structure Analysis – Code review • Code Review/Governance - provides predefined rules and templates for COBOL and PL/I applications •Ensure adherence to corporate standards
- 43. 43 43 zUnit – Unit testing framework for z/OS • Frameworks that assist developers in writing code to perform repeatable, self-checking unit tests are collectively known as xUnit. • xUnit defines a set of concepts that together provide a light-weight architecture for implementing unit testing frameworks. • JUnit, for example, is a very popular instance of the xUnit architecture. • zUnit is a xUnit instance for System z • Goal is to encourage the continuous integration and continuous testing methodology for System z Application development and maintenance TESTCASE1 (...) ADDTESTS2 (...) TEST0012 (...) TESTnnn2 (...) SETUP2 (...) TEARDOWN2 (...) . . . ZXUTCINI(...) ZXUTCADD(...) ZXUASTFM(...) ZXUASTFA(...) USER.ZUNIT(TESTCASE) zUnit Test Runner API Invoking the assertion APIs in the SETUP, TEARDOWN, or active TEST entry will fail the current Test. 1 Language-specific details: In COBOL, this is the first program appearing in the Test Case source file and it will be invoked by the Test Runner for Test Case initialization. In PL/I, the is the procedure declared with option(fetchable) in the Test Case source file and it will be invoked by the Test Runner for Test Case initialization. 2 Language-specific details: In COBOL, these are expected to be subprograms (non-nested and therefore compatible with FUNCTION-POINTER). In PL/I, these are expected to be internal procedures that are declared at the package level (non-nested).
- 44. 44 44 Development Life Cycle • Define the tasks • Create a plan • Create a work item • Assign the work item to a developer • Load the project/source artifacts from SCM • Navigate, Analyze, Edit, Syntax check source code • Compile • Quality assurance • Debug • Code Coverage • Code review • Unit Testing • Check-in/Deliver the source code • Build CLM RDz RTC RDz RD&T RTC RTC RDz Source Dev Build Planning Governance/Unit test
- 45. 45 Enterprise Extensions Specific Functions • Dependency build • “Smart build” of z/OS and IBM i applications, based on what has changed • Promotion • Flow of source code changes and build outputs through development hierarchy • Packaging and deployment • Package build outputs and deploy to another system (e.g. test environment, QA, production, etc)
- 46. 46 Test Machine 1 Jazz Team Server The big picture 1. Dependency build runs on build machine. Source is loaded from Dev Stream and outputs are built in Dev Library. 2. Promotion build runs on build machine. Source is promoted from Dev Stream to Test Stream and build outputs are copied from Dev Library to Test Library. 3. Package build runs on build machine. Test Library build outputs are archived in a package. 4. Deploy build runs on various test machines. Package is loaded to test machine and build outputs are deployed to runtime libraries. Test Stream Dev Stream Build Machine Test Library Dev Library Runtime Library Test Machine 2 Test Machine 3 Package Runtime Library Runtime Library 1 2 2 3 4 4 4
- 47. 47 Dependency Build Summary 1- Scan 2- Preprocessing Scan new or changed files Extract their logical information and dependencies For changed files: impact on build maps Calculate dependency sets Dependency sets Build processing Server Mainframe (Build machine) Build Maps
- 48. 48 Snapshots for every build
- 49. 49 Promotion • Flow source code changes and build outputs through the development hierarchy Source Outputs
- 50. 50 Summary • Many companies spend more than 70% on keeping lights on, and that amount is increasing • IT organizations have problems modifying applications at speed of business • IBM provides a structured approach to incrementally modernize your portfolio based on business priorities • Change without a plan is chaos • A Plan without change is stagnation • Business goals change • applications need to change to address them • Continual renewal is required • tools help to guide, govern, drive, and accomplish this change
- 51. 51 Getting started Next steps to modernize your enterprise applications Try latest System z software for free Sign up for free web-based training Join IBM Rational Cafe Communities Get prescriptive service solutions www.ibm.com/rational/modernization Latest news on System z twitter Latest customer videos Success stories Latest skills: System z job board Enterprise Modernization Revitalize Unify Empower Optimize Enabling Product and Service Innovation
- 52. 52 52