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Cool Apps: Building Cryospheric
Data Applications With Standards-
Based Service Oriented Architecture
Julia A Collins, Ian Truslove, Brendan W Billingsley, Joseph
Oldenburg, Mary Jo Brodzik, Scott Lewis, Miao Liu
Outline


  1.   Introduction
  2.   The Web, circa 2012
  3.   3-tier and Service Oriented Architectures (SOA)
  4.   Service standards
  5.   NSIDC apps
  6.   Proposal




             Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
INTRODUCTION


   Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Introduction


  The National Snow and Ice Data Center (NSIDC)
  supports research into our world's frozen realms: the
  snow, ice, glaciers, frozen ground, and climate
  interactions that make up Earth's cryosphere.
  NSIDC manages and distributes scientific data, creates
  tools for data access, supports data users, performs
  scientific research, and educates the public about the
  cryosphere.



            Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Introduction


  The National Snow and Ice Data Center (NSIDC)
  supports research into our world's frozen realms: the
  snow, ice, glaciers, frozen ground, and climate
  interactions that make up Earth's cryosphere.
  NSIDC manages and distributes scientific data, creates
  tools for data access, supports data users, performs
  scientific research, and educates the public about the
  cryosphere.



            Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Introduction


  distributes scientific data



  creates tools for data access



  supports data users



             Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Introduction


  distributes scientific data



  creates tools for data access



  supports data users



             Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Introduction


              Distribution
              of scientific
                  data




                The
                Web
 Supports                                   Tools for
 data users                                data access




              Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Introduction


              Distribution
              of scientific
                  data
                                                      3rd
                                                     party
                                                     tools

                The
                Web
 Supports                                   Tools for
 data users                                data access




              Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
THE WEB


   Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Web Applications




http://blog.fogcreek.com/the-trello-tech-stack/

                          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
3-Tier Web Architecture


          Presentation                                            JavaScript Web client

        Business Logic                                            Application Server

                           Data                                   Data Abstraction / ORM

                                                                  Database




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
3-Tier Web Architecture




         The Problem:




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
3-Tier Web Architecture




         The Problem:                                             Tight Coupling




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
3-Tier Web Architecture




         The Problem:



1 user interface requires 1 app stack




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
3-Tier Web Architecture




         The Problem:
                …and perhaps

                                  portal
                               proliferation
                                 problem

          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
3-Tier Web Architecture


                                  Extending…




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
3-Tier Web Architecture




                                                 Bridge




                       New app                                       Other data



          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
3-Tier Web Architecture




         The Problem:



 1 user interface requires ≥1 app stack
        (hopefully in the same language)



          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
SOA Web Architecture

                                             Client App 1




                                       XML                      JSON




                                               System A




         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Service Interfaces


       Clients consume service interfaces

                       Loose                                       coupling

        Systems expose service interfaces




           Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Service Interfaces


                                   Extending…




           Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
SOA Web Architecture

                                             Client App 1




                                               System A




         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Service Interfaces


          The Problem:


                                  service interface
                                    proliferation
                                      problem




           Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Service Interfaces and Standards


      Clients consume service interfaces


       …service interfaces conforming to
                   standards




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Service Standards

        data:                  OGC WMS, WFS, WPS, …
                               OPeNDAP
                               REST
   publishing:                 ATOM
    discovery:                 ESIP OpenSearch
    metadata:                  OAI-PMH


           Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Service Interfaces


                                       Reusing…




           Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
SOA Web Architecture

                                             Client App 1
                 Client App 2                                             Client App 3




                                               System A                                       System B




Many clients…
         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
SOA Web Architecture

                                             Client App 1




                               System A                         System B




Many service providers…
         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Implementing Services


                                   Adopt
                                     >
                                  Extend
                                     >
                               Roll your own



         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Service Standards




    REST is aN
  Architectural
      style!




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Services: Roll Your Own


  Desirable properties include:

                    Discoverability
                  Comprehensibility
                       Universality
                      Extensibility


          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Services, RESTfully

 Discoverability:
      hypermedia constraint, published media types
 Comprehensibility:
      familiar URIs; media types
 Universality:
      HTTP transport; XML or JSON payloads
 Extensibility:
      XML, e.g. ATOM

            Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Implementing Services


                   Adopt
                     >
                   Extend
                     >
       Roll your own RESTful services



         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
SOA @ NSIDC


    Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
NSIDC’s Service Oriented Architecture
Web Apps



                                                                                                                        ACADIS Arctic
                             IceBridge Portal
                                                                                                                        Data Explorer



                   WMS,                      ESIP                                 ESIP                                    ESIP
                   WFS                       OpenSearch                           OpenSearch                        OpenSearch


                                  Libre                                Searchlight
                                Aggregator                              Services                         jOAI                    GI-Cat
                                                                                                                     OAI-PMH
Services




                                            ESIP                       Searchlight
                                            Collection                   Core                           DIF
                                                                                                       DIF
                                            Cast
                                                                                                        XML
                                                                                                       XML
            MapServer              Libre
                                DataCaster
                                                                                                get_metadata


             GeoTIFF
            GeoTIFF
Data




           GeoTIFF
             map data
            map data                                                               Metadata DB
           map data


                          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
NSIDC’s Service Oriented Architecture
Web Apps



                                                                                                                        ACADIS Arctic
                             IceBridge Portal
                                                                                                                        Data Explorer



                   WMS,                      ESIP                                 ESIP                                    ESIP
                   WFS                       OpenSearch                           OpenSearch                        OpenSearch


                                  Libre                                Searchlight
                                Aggregator                              Services                         jOAI                    GI-Cat
                                                                                                                     OAI-PMH
Services




                                            ESIP                       Searchlight
                                            Collection                   Core                           DIF
                                                                                                       DIF
                                            Cast
                                                                                                        XML
                                                                                                       XML
            MapServer              Libre
                                DataCaster
                                                                                                get_metadata


             GeoTIFF
            GeoTIFF
Data




           GeoTIFF
             map data
            map data                                                               Metadata DB
           map data


                          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Operation IceBridge Portal




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Operation IceBridge Portal

        ESIP                                                                              WMS
   OpenSearch


                                                                                          WFS                            NSIDC
                                                           ESIP                                                         MapServer

                                                           OpenSearch
     NSIDC
   Searchlight




                                          Libre
                                        Aggregator


                 Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
ACADIS Arctic Data Explorer




         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
ACADIS Arctic Data Explorer

                                 ESIP OpenSearch

ACADIS Arctic Data
    Explorer
                                                                                                              OAI-PMH
               OPeNDAP




            EOL field                        NSIDC                                 Met.no
             catalog                        metadata                              metadata                        ACADIS
            (NCAR)                           catalog                               catalog                    Gateway (NCAR)


              Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
+/-/Δ: OBSERVATIONS


    Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Disadvantages


                         Complexity
                         Compromise
                       Development time




         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Advantages


             Reuse (and reusability)
             Off-The-Shelf Software
               Development time




         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Challenges


                            Documentation
                              Adoption
                             Continuity




         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
THE WEB OF SERVICES


    Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
The Web of Services


      Clients consume service interfaces




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
The Web of Services




                                Web clients…




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
The Web of Services




  Web browsers have security restrictions…
          (“same origin policy”)




          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
The Web of Services




                           My web client
             may not consume
     your service interface

          Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
A MODEST PROPOSAL


    Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Goal



  Increase the pool
  of potential users
 (web applications)
        of our data



        Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
HTML5 Standard: CORS


    CORS: Cross Origin Resource Sharing

       http://www.w3.org/TR/cors/
           http://enable-cors.org/




        Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Proposal


           Write service-enabled clients

           Build standards-based services

                                   Enable CORS

       Share and reuse data and services


           Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Poster


         Joe Oldenburg: “Cool Apps”

                                 IN43B-1517




         Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
Questions

                                   Write service-enabled clients

                                 Build standards-based services

                                                   Enable CORS

                             Share and reuse data and services


                    me: ian.truslove@nsidc.org
                         @iantruslove
      this presentation: http://goo.gl/xkxgd
            Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture

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Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture

  • 1. Cool Apps: Building Cryospheric Data Applications With Standards- Based Service Oriented Architecture Julia A Collins, Ian Truslove, Brendan W Billingsley, Joseph Oldenburg, Mary Jo Brodzik, Scott Lewis, Miao Liu
  • 2. Outline 1. Introduction 2. The Web, circa 2012 3. 3-tier and Service Oriented Architectures (SOA) 4. Service standards 5. NSIDC apps 6. Proposal Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 3. INTRODUCTION Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 4. Introduction The National Snow and Ice Data Center (NSIDC) supports research into our world's frozen realms: the snow, ice, glaciers, frozen ground, and climate interactions that make up Earth's cryosphere. NSIDC manages and distributes scientific data, creates tools for data access, supports data users, performs scientific research, and educates the public about the cryosphere. Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 5. Introduction The National Snow and Ice Data Center (NSIDC) supports research into our world's frozen realms: the snow, ice, glaciers, frozen ground, and climate interactions that make up Earth's cryosphere. NSIDC manages and distributes scientific data, creates tools for data access, supports data users, performs scientific research, and educates the public about the cryosphere. Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 6. Introduction distributes scientific data creates tools for data access supports data users Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 7. Introduction distributes scientific data creates tools for data access supports data users Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 8. Introduction Distribution of scientific data The Web Supports Tools for data users data access Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 9. Introduction Distribution of scientific data 3rd party tools The Web Supports Tools for data users data access Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 10. THE WEB Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 11. Web Applications http://blog.fogcreek.com/the-trello-tech-stack/ Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 12. 3-Tier Web Architecture Presentation JavaScript Web client Business Logic Application Server Data Data Abstraction / ORM Database Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 13. 3-Tier Web Architecture The Problem: Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 14. 3-Tier Web Architecture The Problem: Tight Coupling Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 15. 3-Tier Web Architecture The Problem: 1 user interface requires 1 app stack Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 16. 3-Tier Web Architecture The Problem: …and perhaps portal proliferation problem Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 17. 3-Tier Web Architecture Extending… Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 18. 3-Tier Web Architecture Bridge New app Other data Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 19. 3-Tier Web Architecture The Problem: 1 user interface requires ≥1 app stack (hopefully in the same language) Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 20. Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 21. SOA Web Architecture Client App 1 XML JSON System A Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 22. Service Interfaces Clients consume service interfaces Loose coupling Systems expose service interfaces Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 23. Service Interfaces Extending… Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 24. SOA Web Architecture Client App 1 System A Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 25. Service Interfaces The Problem: service interface proliferation problem Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 26. Service Interfaces and Standards Clients consume service interfaces …service interfaces conforming to standards Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 27. Service Standards data: OGC WMS, WFS, WPS, … OPeNDAP REST publishing: ATOM discovery: ESIP OpenSearch metadata: OAI-PMH Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 28. Service Interfaces Reusing… Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 29. SOA Web Architecture Client App 1 Client App 2 Client App 3 System A System B Many clients… Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 30. SOA Web Architecture Client App 1 System A System B Many service providers… Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 31. Implementing Services Adopt > Extend > Roll your own Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 32. Service Standards REST is aN Architectural style! Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 33. Services: Roll Your Own Desirable properties include: Discoverability Comprehensibility Universality Extensibility Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 34. Services, RESTfully Discoverability: hypermedia constraint, published media types Comprehensibility: familiar URIs; media types Universality: HTTP transport; XML or JSON payloads Extensibility: XML, e.g. ATOM Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 35. Implementing Services Adopt > Extend > Roll your own RESTful services Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 36. SOA @ NSIDC Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 37. NSIDC’s Service Oriented Architecture Web Apps ACADIS Arctic IceBridge Portal Data Explorer WMS, ESIP ESIP ESIP WFS OpenSearch OpenSearch OpenSearch Libre Searchlight Aggregator Services jOAI GI-Cat OAI-PMH Services ESIP Searchlight Collection Core DIF DIF Cast XML XML MapServer Libre DataCaster get_metadata GeoTIFF GeoTIFF Data GeoTIFF map data map data Metadata DB map data Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 38. NSIDC’s Service Oriented Architecture Web Apps ACADIS Arctic IceBridge Portal Data Explorer WMS, ESIP ESIP ESIP WFS OpenSearch OpenSearch OpenSearch Libre Searchlight Aggregator Services jOAI GI-Cat OAI-PMH Services ESIP Searchlight Collection Core DIF DIF Cast XML XML MapServer Libre DataCaster get_metadata GeoTIFF GeoTIFF Data GeoTIFF map data map data Metadata DB map data Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 39. Operation IceBridge Portal Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 40. Operation IceBridge Portal ESIP WMS OpenSearch WFS NSIDC ESIP MapServer OpenSearch NSIDC Searchlight Libre Aggregator Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 41. ACADIS Arctic Data Explorer Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 42. ACADIS Arctic Data Explorer ESIP OpenSearch ACADIS Arctic Data Explorer OAI-PMH OPeNDAP EOL field NSIDC Met.no catalog metadata metadata ACADIS (NCAR) catalog catalog Gateway (NCAR) Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 43. +/-/Δ: OBSERVATIONS Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 44. Disadvantages Complexity Compromise Development time Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 45. Advantages Reuse (and reusability) Off-The-Shelf Software Development time Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 46. Challenges Documentation Adoption Continuity Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 47. THE WEB OF SERVICES Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 48. The Web of Services Clients consume service interfaces Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 49. The Web of Services Web clients… Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 50. The Web of Services Web browsers have security restrictions… (“same origin policy”) Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 51. The Web of Services My web client may not consume your service interface Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 52. A MODEST PROPOSAL Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 53. Goal Increase the pool of potential users (web applications) of our data Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 54. HTML5 Standard: CORS CORS: Cross Origin Resource Sharing http://www.w3.org/TR/cors/ http://enable-cors.org/ Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 55. Proposal Write service-enabled clients Build standards-based services Enable CORS Share and reuse data and services Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 56. Poster Joe Oldenburg: “Cool Apps” IN43B-1517 Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture
  • 57. Questions Write service-enabled clients Build standards-based services Enable CORS Share and reuse data and services me: ian.truslove@nsidc.org @iantruslove this presentation: http://goo.gl/xkxgd Cool Apps: Building Cryospheric Data Applications With Standards-Based Service Oriented Architecture