CSEPM - A Continuous Software Engineering Process Metamodel

Presentation at the RCoSE Workshop 2017 in Buenos Aires, Argentinia

Transcript

1. s.krusche@tum.de - www.skrusche.de - @skrusche
   RCoSE 2017
   Stephan Krusche and Bernd Bruegge (May 22, 2017)
   CSEPM - A Continuous Software 

   Engineering Process Metamodel
   

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2. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
   Introduction
   2
   • The term “software engineering” (SE) was proposed in the 1960s to overcome
   “chaos” (software crisis) using a defined process control model
   • In the 1990s, agile methods changed the emphasis from defined to empirical process control
   Empirical Process
   Not entirely planned
   Inspect and adapt
   Defined Process
   Planned
   Follows strict rules
   Avoids deviations
   

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3. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
   Motivation
   • Jez Humble defined a model for continuous delivery: the goal is to keep software in a
   state so that changes to it can be released at any time
   • Jan Bosch coined the term continuous software engineering (CSE)
   • However, there has not yet been an attempt to model software engineering continuously
   • Main objective: create a software process metamodel to describes the continuous and
   unexpected nature of SE through workflows that can be interrupted by change events
   ➡Continuous Software Engineering Process Metamodel: CSEPM
   ➡Improve communication about CSE and formalize tailoring, customization and extension
   possibilities
   3
   

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4. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
   CSEPM in the Meta Object Facility
   4
   MOF Layer Type Example
   M3 - Meta
   Metamodel
   Meta Object
   Facility
   M2 - Metamodel
   (Generic concepts)
   CSEPM
   M1 - Model
   (Way of working)
   Process
   Model
   M0 - Reality
   (What actually
   happens)
   Concrete
   Process
   Class
   <>
   Work Queue
   <>
   <>
   Work Item
   <>
   *
   <>
   Sprint Backlog
   <>
   <>
   Backlog Item
   <>
   *
   <> <>
   Sprint 1 Backlog
   ID Name Difficulty
   1 Search available Pedelecs Medium
   2 Check working radius Large
   <>
   

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5. CSEPM: Static process
   metamodel (simplified)
   5
   Workflow Model
   Change Model
   -load
   -state : State
   +customize()
   +activate()
   +sleep()
   +receive(Event)
   Workflow
   +modifyItem()
   +proritizeItem()
   Work Queue
   Configuration Management Model
   -state : State
   -priority : Int
   +interrupt()
   +resume()
   Work Item
   Artifact
   (Resource)
   Sleep
   Ready
   Running
   Blocked
   Finished
   < < e n u m > >
   State
   Activity
   Project Management Model
   +tailor()
   Process
   Project
   Outcome
   Controlled
   Item
   +send()
   Event
   +addObserver()
   +removeObserver()
   +notify()
   Event Subject
   +update()
   Event Observer
   Service
   (Tool)
   Feedback Task
   Version
   Milestone
   Phase
   Review
   Release
   Iteration
   *
   *
   *
   *
   *
   1
   *
   *
   0..*
   *
   1..*
   *
   *
   *
   depend on
   require
   create
   activate
   subscribe
   / create
   

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6. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
   CSEPM: Lifecycle for a Workflow
   6
   Active Finished
   Blocked
   activate sleep
   stop
   resume
   interrupt
   Sleep
   End
   Start
   Rugby
   Receive Event
   Rugby Send
   Event
   

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7. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
   CSEPM: Lifecycle for a Workflow (Example)
   7
   Design Change
   Analysis
   Design
   New
   Requirement
   Design
   Change
   New
   Requirement
   Active Finished
   Blocked
   activate sleep
   stop
   resume
   interrupt
   Sleep
   End
   Start
   Rugby Send
   Event
   Feature
   Change
   Architecture
   Change
   Implementation
   Change
   Rugby
   Receive Event
   

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8. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
   CSEPM: Dynamic process metamodel
   8
   Start
   Workflow
   Perform
   Work
   Incoming
   Event
   Activate
   Workflow
   Workflow
   Outgoing
   Event
   Stop
   Workflow
   Project End
   Workflow
   Customization
   Stop
   Workflow
   Customize
   Workflow
   Workflow
   Start
   Workflow Start
   Workflow
   Start
   Subscribe
   to Events
   Project End
   Sleep
   Work
   finished?
   Sleep
   Project
   Start
   Sleep
   No
   Yes
   Start
   Workflow
   Perform
   Work
   Incoming
   Event
   Activate
   Workflow
   Workflow
   Outgoing
   Event
   Stop
   Workflow
   Project End
   Workflow
   Customization
   Stop
   Workflow
   Customize
   Workflow
   Workflow
   Start
   Workflow Start
   Workflow
   Start
   Subscribe
   to Events
   Project End
   Sleep
   Work
   finished?
   Sleep
   Project
   Start
   Sleep
   No
   Yes
   Start
   Workflow
   Perform
   Work
   Incoming
   Event
   Activate
   Workflow
   Workflow
   Outgoing
   Event
   Stop
   Workflow
   Project End
   Workflow
   Customization
   Stop
   Workflow
   Customize
   Workflow
   Workflow
   Start
   Workflow Start
   Workflow
   Start
   Subscribe
   to Events
   Project End
   Sleep
   Work
   finished?
   Sleep
   Project
   Start
   Sleep
   No
   Yes
   Start
   Workflow
   Perform
   Work
   Incoming
   Event
   Activate
   Workflow
   Workflow
   Outgoing
   Event
   Stop
   Workflow
   Project End
   Workflow
   Customization
   Stop
   Workflow
   Customize
   Workflow
   Workflow
   Start
   Workflow Start
   Workflow
   Start
   Subscribe
   to Events
   Project End
   Sleep
   Work
   finished?
   Sleep
   Project
   Start
   Sleep
   No
   Yes
   Start
   Workflow
   Perform
   Work
   Incoming
   Event
   Activate
   Workflow
   Workflow
   Outgoing
   Event
   Stop
   Workflow
   Project End
   Workflow
   Customization
   Stop
   Workflow
   Customize
   Workflow
   Workflow
   Start
   Workflow Start
   Workflow
   Start
   Subscribe
   to Events
   Project End
   Sleep
   Work
   finished?
   Sleep
   Project
   Start
   Sleep
   No
   Yes
   

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9. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
   CSEPM Instance of a Sequential Model: Waterfall
   9
   Requirements
   Elicitation
   Problem
   Statement
   Elicit
   requirements
   Analysis
   Requirements
   Analysis
   Document
   Analyze
   ...
   ...
   ...
   Deployment
   Deployed
   Software
   Deploy
   Requirements
   Elicitation
   finished
   Requirements
   Elicitation
   finished
   Analysis
   finished
   ...
   ...
   Testing
   finished
   Project
   Start
   Software
   deployed
   Project
   End
   Project
   Start
   Project
   End
   Sleep
   Sleep
   Sleep
   Sleep
   

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10. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
    CSEPM Instance of an Iterative Model: Unified Process
    10
    Inception
    Candidate
    Architecture
    Iterate
    Elaboration
    Iterate
    Executable
    Architecture
    Construction
    Iterate
    Intermediate
    Release
    Transition
    Iterate
    Final Release
    Lifecycle
    Objective
    Lifecycle
    Architecture
    Lifecycle
    Objective
    Lifecycle
    Architecture
    Initial
    Operational
    Capability
    Initial
    Operational
    Capability
    Product
    Release
    Project
    End
    Project Start
    Project
    Start
    Iteration
    needed?
    Iteration
    needed?
    Iteration
    needed?
    Iteration
    needed?
    Project
    End
    No
    Yes
    No
    Yes
    Yes
    Yes
    No
    No
    

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11. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
    CSEPM Instance of an Agile Model: Scrum
    11
    Sprint N
    Kickoff
    Meeting
    Create
    Product
    Backlog
    Initial
    Product
    Backlog
    Revise
    Product
    Backlog
    Sprint Planning
    Meeting
    Create
    Sprint
    Backlog
    Sprint
    Backlog N
    Develop
    Backlog Item
    Build
    Product
    Increment
    Product
    Increment N
    Sprint Review
    Meeting
    Feedback
    Revised
    Product
    Backlog
    Time based
    Release
    Feedback
    Report
    Project
    End
    Product
    Backlog
    revised
    Product
    Backlog
    created
    Product
    Backlog
    created
    Feedback
    Report
    Time
    based
    Release
    Project finished?
    Development
    done?
    Project
    Start
    Project
    End
    No
    Yes
    Yes
    No
    Paradigm Standard(TUM - Institut fuer Informatik - Lehrstuhl 1)
    

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12. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel 12
    Development
    Review
    Management
    Release
    Management
    Feedback
    Management
    Requirements
    Elicitation
    Analyze
    Finished?
    Backlog Item ready
    for development
    Merge Request
    Merge Request Review
    Quality ok?
    yes
    yes
    Backlog Item finished
    Merge
    Need feedback?
    Release Request
    no
    yes
    no
    Improvement Request
    Improvement Request
    Release Request
    Release Feedback Report
    Feedback Report
    Analyze
    Feedback
    New Backlog Item
    Backlog Item ready
    for Development
    Is new
    requirement?
    New Backlog Item
    Change Request
    yes
    no
    Change Request
    Specify Prioritize
    Design
    Implement
    Test
    CSEPM Instance of a Continuous Model: Rugby (simplified)
    Backlog Item finished
    Use …
    

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13. Stephan Krusche and Bernd Bruegge — CSEPM - A Continuous Software Engineering Process Metamodel
    Conclusion
    • CSEPM is an empirical process metamodel for continuous software engineering
    • It also allows to model instances for sequential, iterative and agile process models
    • It treats development activities as parallel running workflows to enable rapid cycles
    • It allows tailoring, customization and extension
    ➡ CSEPM helps to understand the continuous and unexpected nature of software
    engineering
    13
    

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14. s.krusche@tum.de - www.skrusche.de - @skrusche
    RCoSE 2017
    Stephan Krusche and Bernd Bruegge (May 22, 2017)
    CSEPM - A Continuous Software 

    Engineering Process Metamodel
    

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