sachin chouksey ebru dincel
DESCRIPTION
A Cooperative Approach to Support Software Deployment Using the Software Dock by R. Hall, D. Heimbigner, A. Wolf. Sachin Chouksey Ebru Dincel. Outline. What is Software Deployment ? Software Deployment Life Cycle Software Dock (Architecture) Deployable Software Description (DSD) Format - PowerPoint PPT PresentationTRANSCRIPT
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A Cooperative Approach to Support Software Deployment Using the Software Dock
by R. Hall, D. Heimbigner, A. Wolf
Sachin Chouksey
Ebru Dincel
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Outline What is Software Deployment ? Software Deployment Life Cycle Software Dock (Architecture) Deployable Software Description (DSD) Format Software Dock Processes Current, Related & Future Work. Wrap-up
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What is Software Deployment? Release Install Adapt Reconfigure Update
Activate Deactivate Remove Retire
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How is it changing ?
Then Complete Installation
procedure for software system on CD ROM
Entire software system installation
Now Software producers
and consumers cooperating and negotiating.
“Update” of Software Systems
All this because of high connectivity
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What do we need from deployment technologies ? Support for heterogeneity in terms of
platforms and network environments. Semantic model to describe software
systems. Semantic model to describe target sites. Decentralized control for both software
producers and consumers.
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Software Deployment Definitions Previously
Installation of a software system. Simplistic & Incomplete view.
Currently An evolving collection of inter-related
activities. Software deployment life cycle.
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Software Deployment Life Cycle Producer side
Release Retire
Consumer side Install Activate/Deactivate Reconfigure Update Adapt Remove
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Software Dock Architecture
Components Release Dock Field Dock Inter Dock Agents Event Service
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Architecture: Release Dock Server residing at producer. Repository of software systems. Web-based release mechanism. Std. deployment schema for each release. Agents perform deployment process. Programmatic interface for agents. Generates events for changes made to a release. Agents subscribe to events.
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Architecture: Field Dock Server residing at consumer. Provides interface to consumer site. Site resources and configuration (context). Agents dock here and access interface. Standardized, hierarchical information
registry for a common namespace.
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Architecture: Agents Implement actual functionality. Only agent and software system description
loaded onto consumer site from release dock.
Agent configures system for that target site. Precise set of corresponding artifacts and
other agents then downloaded.
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Architecture: Event Service
Connectivity between software producers and consumers.
Remote agents subscribe to events. Uses standard protocols over the internet.
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Architecture: Inter Dock Future implementation. Support for “Administrator” role. Administrator can specify activity that
should occur at a specific or set of sites. Global view of consumer organization. Complicated deployment scenarios
addressable.
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Where are We ? What is Software Deployment ? Software Deployment Life Cycle Software Dock (Architecture) Deployable Software Description (DSD)
Format Software Dock Processes Current, Related & Future Work Wrap-up
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Deployable Software Description (DSD) Schema of deployment
information System as collections and
configurations of propertiesProperty {
Name = “ Online Help”Type = “Boolean”Description = “Include
online help.”….}
Simple, generic, hierarchical way of describing software system family/component based development
Critical piece of Software Dock
Elements
- Configuration
- Assertions
- Dependencies
- Artifacts
- Activities
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DSD: Configurations Relationships between software artifacts. Resources provided by software system.
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DSD: Assertions Consumer-side
constraints for a successful deployment.
Assertion {
Condition =
“($OS$ = =‘Solaris’) ||
($OS$ = =‘Win95’)”
Description = “Test for supported operating system.”
….}
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DSD: Dependencies Consumer-side constraints where a
resolution is possible if the constraint does not hold (e.g installing dependent subsystems).
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DSD: Artifacts Physical artifacts of
the software system.
Artifacts {Guard = “($Online Help$ = = true)”Artifact {
Guard = “($OS$ = = ‘Solaris’)”SourceName
=“help.html”Source = “/proj/doc”Destination = “doc”Mutable = falseSignature = “a4ca443b”Type = “DOC” …}
Artifact {……}….}
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DSD: Activities Any specialized activities outside of
standard deployment process.
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Software Dock Processes Generic
- Differential processing Specific
- Install (pull)- Update (pull/push, new DSD)- Reconfigure (pull, existing DSD)- Adapt (pull, enforces consistency, existing DSD)- Remove (pull)
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Related Work Configuration Management Tools (e.g. Adele, PCL,..)
- no deployment or schema Schema based (e.g. OSD, AMS, ..)
- not mature enough for automation, centralized Script based (e.g. GNU AutoConf,..)
- not rich enough, heuristics Recent utilities (e.g. InstallShield, netDeploy, ..)
- not rich enough for automation, better support
Immature, partial support for deployment activities, and not standardized
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Ongoing Work Current
Java Prototype http://www.cs.colorado.edu/~serl
- SIENA (event notification)
- Voyager (IPC, mobile agents)
- schema editing tool (DSD editing, artifact entry)
- dock station tool (interface for deployment process) Future
- higher security (JVM 2.0)
- remote agents and server
- extended DSD
- administration policies
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Software Dock Advantages Decentralized through cooperation. Scalability due to centralization. Asynchronous, bi-directional communication. Unification of description and process. Support for various deployment processes. Sophisticated configuration management. Support for multi-platform. Extensibility, reliability and standardization (schemas and
elements). Better performance results.
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Issues in an Embedded Environment Security (“trusted” mobile agents). Authentication and authorization. Resource constrained environments. Run-time reconfiguration, update, and down time. Platform changes (e.g. hardware). Real-time guarantees. Fault-tolerance, graceful degradation of service.