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OSGi & Other Technologies
Peter Kriens, aQute
OSGi Fellow
www.aQute.biz
OSGi & Other Technologies
Overview
! OSGi's Place In The World
! Java & OSGi
! UPnP & OSGi
! Web Services & ...
www.aQute.biz
OSGi's Place In The World
! More and more demand for
connected systems
! Remote Diagnostics &
Maintenance
! ...
www.aQute.biz
OSGi's Place In The World
! Building systems is hard
! Connected systems are even
harder to build
! Distribu...
www.aQute.biz
OSGi's Place In The World
! The OSGi specifications define
a Java environment, just like an
operating system...
www.aQute.biz
Java & OSGi
! More than a programming
language …
! Standardized interfaces:
Multiple implementations
! Acces...
www.aQute.biz
UPnP & OSGi
! Universal Plug aNd Play
! A standard to let appliances
communicate
! Functions
! Device/Servic...
www.aQute.biz
UPnP & OSGi
! Sounds awfully
similar to
OSGi???
! Confused?
www.aQute.biz
UPnP & OSGi
! UPnP defines a communication
protocol
! OSGi defines an execution
environment
! Device
! Bundl...
www.aQute.biz
UPnP & OSGi
! The OSGi Service Platform is a
perfect execution environment
for UPnP enabled services!
! The ...
www.aQute.biz
Web Services & OSGi
! Web Services allow computers
to communicate
! Text Based, so it is easy to
route traff...
www.aQute.biz
Web Services & OSGi
! The OSGi Service Platform is
an excellent environment for
implementing web services
! ...
www.aQute.biz
OSGi & .NET
! Java captured significant market
share in the 90s because Java:
! Is easier to program than C+...
www.aQute.biz
OSGi & .NET
! So SUN sued Microsoft
! Microsoft kept Java at Version
1.1 (Still today)
! The OSGi was founde...
www.aQute.biz
C#C#
'VB''VB'
'J#''J#'
'C++''C++'
......
OSGi & .NET
! .NET Framework
! Provides all of the technical
advant...
www.aQute.biz
OSGi & .NET
! .NET's second cornerstone is:
! Web Services!
! Web Services level the playing
field
! Web Ser...
www.aQute.biz
JAVA.NET
! aQute & Inventures are
preparing a comprehensive
comparison of the Java and
.NET:
! Strategies
! ...
www.aQute.biz
So Why OSGi?
! The non-proprietary nature of
Java is future proof
! Multiple choices
! No party with market ...
Questions ?
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OSGi and Other Technologies - P Kriens

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OSGi World Congress 2003

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OSGi and Other Technologies - P Kriens

  1. 1. OSGi & Other Technologies Peter Kriens, aQute OSGi Fellow
  2. 2. www.aQute.biz OSGi & Other Technologies Overview ! OSGi's Place In The World ! Java & OSGi ! UPnP & OSGi ! Web Services & OSGi ! Microsoft .NET ! So Why OSGi?
  3. 3. www.aQute.biz OSGi's Place In The World ! More and more demand for connected systems ! Remote Diagnostics & Maintenance ! Downloading and running new services ! Inter-operability becomes an issues ! Too many standards ! Bridging is hard or impossible ! Danger of creating islands
  4. 4. www.aQute.biz OSGi's Place In The World ! Building systems is hard ! Connected systems are even harder to build ! Distribution adds failure points ! Difficult to fix bugs remotely ! Upgrades ! How can the devices on a network inter-operate? ! New devices ! New services ! New standards ! It is a giant puzzle! ! The keyword is extendibility
  5. 5. www.aQute.biz OSGi's Place In The World ! The OSGi specifications define a Java environment, just like an operating system, for networked services. ! A networked service: ! Can be deployed over a network ! Adds a variety of functions to the device ! May be managed, under the control of an operator ! Intended for all types of devices as long as they are networked ! Mobile phones, Gateways, PDAs, desktops, cars, and enterprise servers
  6. 6. www.aQute.biz Java & OSGi ! More than a programming language … ! Standardized interfaces: Multiple implementations ! Access to tens of thousands of software libraries ! Application is: start - stop ! Is this sufficient for networked devices? ! OSGi Specifications provide: ! An in-VM application model. ! A Service Registry for service discovery ! A delivery format ! The OSGi fills a gap in Java Operating SystemOperating System Operating SystemOperating System JavaJava VMVMJavaJava VMVM The ApplicationThe Application CryptoCrypto-- graphygraphy UPnPUPnP DirecDirec-- toriestories ImagingImaging MailMail MediaMedia FWFW SQLSQL GUIGUI DistriDistri-- butedbuted CommComm PortsPorts SecuritySecurity TCP/IPTCP/IP JTAPIJTAPI 3D3D WebWeb ServerServer MathMath SpeechSpeech BlueBlue-- toothtooth XMLXML USBUSB The ApplicationThe Application Operating SystemOperating System Operating SystemOperating System Operating SystemOperating System Operating SystemOperating System JavaJava VMVMJavaJava VMVM JavaJava VMVMJavaJava VMVM JavaJava VMVMJavaJava VMVM JavaJava VMVMSystem Class LibrariesSystem Class Libraries OSGiOSGi OSGiOSGi OSGiOSGi OSGiOSGi ApplicationApplication ApplicationApplication ApplicationApplication ApplicationApplication ApplicationApplication ApplicationApplication ApplicationApplication LibraryLibrary
  7. 7. www.aQute.biz UPnP & OSGi ! Universal Plug aNd Play ! A standard to let appliances communicate ! Functions ! Device/Service Discovery standard: SSDP ! Remote Execution: SOAP ! Device Interface Descriptions: WSDL ! Allows for pre-defined, device resident, and generated GUIs ! Device ! OSGi Based Device
  8. 8. www.aQute.biz UPnP & OSGi ! Sounds awfully similar to OSGi??? ! Confused?
  9. 9. www.aQute.biz UPnP & OSGi ! UPnP defines a communication protocol ! OSGi defines an execution environment ! Device ! Bundle/Application code ! Service OSGIOSGI OSGIOSGI
  10. 10. www.aQute.biz UPnP & OSGi ! The OSGi Service Platform is a perfect execution environment for UPnP enabled services! ! The OSGi Alliance has standardized a UPnP Service that makes empowering a device with UPnP very easy ! The Service Platform could become available as a standardized UPnP Device in the future ! A marriage made in heaven! OSGIOSGI OSGIOSGI
  11. 11. www.aQute.biz Web Services & OSGi ! Web Services allow computers to communicate ! Text Based, so it is easy to route traffic through firewalls ! Uses XML standards for communication: ! SOAP ! UDDI ! WSDL ! XSchema ! … ! Heavily supported by the industry ! Google ! Amazon Internet IntranetIntranet
  12. 12. www.aQute.biz Web Services & OSGi ! The OSGi Service Platform is an excellent environment for implementing web services ! Receiving ! Sending ! Registries ! The OSGi Service Platform simplifies the deployment and management of the applications ! Excellent match! Internet IntranetIntranet
  13. 13. www.aQute.biz OSGi & .NET ! Java captured significant market share in the 90s because Java: ! Is easier to program than C++ ! Has robust automatic memory management ! Provides a security model ! Microsoft noticed the advantage and "adopted" Java ! However, they optimized their implementation for Windows ! This invalidated the "write once, run everywhere" mantra ! Obviously, SUN was not smiling :) ::--((;;--))::--)) :|:) :|:| :) >:(>:(
  14. 14. www.aQute.biz OSGi & .NET ! So SUN sued Microsoft ! Microsoft kept Java at Version 1.1 (Still today) ! The OSGi was founded to use Java with networked services ! Microsoft introduced .NET ! Based on exactly the same principles as Java ! Heavily optimized (and compatible with Windows) ! SUN extended Java with J2ME and J2SE ! Microsoft developed several products for .NET and renamed more products to .NET ;);) :( :):) .NET.NET :| :|:| .NET.NET .NET.NET .NET.NET .NET.NET .NET.NET .NET.NET :)
  15. 15. www.aQute.biz C#C# 'VB''VB' 'J#''J#' 'C++''C++' ...... OSGi & .NET ! .NET Framework ! Provides all of the technical advantages of Java, and more ! Has virtually the same characteristics ! Comprehensive range of products ! But lacks ! Good remote management ! Life cycle management ! Optimizations for the myriad of niche applications ! Independent specifications Windows XPWindows XP or 2000or 2000 EmbeddedEmbedded XPXP CE .NETCE .NET CommonLanguageSpecificationCommonLanguageSpecification Common Language RuntimeCommon Language Runtime ADO.NETADO.NETASP.NETASP.NET WindowsWindows FormsForms ApplicationsApplications LibrariesLibraries COMLegacyCOMLegacy
  16. 16. www.aQute.biz OSGi & .NET ! .NET's second cornerstone is: ! Web Services! ! Web Services level the playing field ! Web Services implemented with Microsoft can be called from Java/OSGi based systems ! The choice from an implementation environment can now be based on technology, not market lock in! Internet IntranetIntranet MS OSGi
  17. 17. www.aQute.biz JAVA.NET ! aQute & Inventures are preparing a comprehensive comparison of the Java and .NET: ! Strategies ! Technologies ! Adoption ! Applicability ! Markets ! Standards ! We are looking for experiences, stories, and requirements ! Peter.Kriens@aQute.se
  18. 18. www.aQute.biz So Why OSGi? ! The non-proprietary nature of Java is future proof ! Multiple choices ! No party with market lock ! Large number of parties that make variations on the theme ! The OSGi service platform is complementary to many existing technologies ! A well defined run-time environ- ment for connecting devices ! The OSGi Specifications a unique remote deployment model ! Web Services level the playing field with .NET
  19. 19. Questions ?

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