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DEV03 - How Watson, Bluemix, Cloudant, and XPages Can Work Together In A Real World Application
This document summarizes a presentation about how Watson, Bluemix, Cloudant, and XPages can work together in a real-world HR Assistant application. The application uses IBM Bluemix as a platform, Cloudant as a NoSQL database to store and retrieve data, IBM Watson services like Tone Analyzer and Personality Insights to analyze job posts and applications, and ChartJS to visualize analysis results. Lessons learned include that IBM Cloud services are powerful but APIs are inconsistent, and integrating Cloudant required extra work but it is reliable and flexible. Future plans include commercializing the solution and adding more capabilities.
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DEV03 - How Watson, Bluemix, Cloudant, and XPages Can Work Together In A Real World Application
- 1. How Watson, Bluemix,Cloudant, and XPages Can Work Together In A Real World Application Frank van der Linden, elstar IT Full stack Java Developer DEV03 Engage 2017
- 2. Me • Freelance Fullstack Java developer • Owner of elstar IT • Curious of new technology • IBM Champion 2013, 2014 and 2017
- 3. How do weproceed • HR Assistant • Running it on IBM Bluemix • Store it in Cloudant • Analyse it with IBM Watson • Show it with Charts • Lessons learned • The future
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- 7. Frédéric Dehédin • Atthe time of the project: Senior Application developer at Belsoft Collaboration AG • @fdehedin • http://www.fdehedin.ch/
- 8. Facts • Winner ofthe ICS Developer Competition 2016 • Runs on the XSP runtime on IBM Bluemix • Store all the data in Cloudant • Analyse jobs and job applications with IBM Watson • Backend is pure Java, no Java Notes objects
- 9. Add ons • Cloudantconnector OSGi plugin • Take out the security issue • Storing in and retrieving from Cloudant. JSON <—> POJO • Can be accessed from Java backend. • Do the heavy lifting. Don't reinvent the wheel.
- 10. Add ons • JacksonMapper OSGi plugin • Take out the security issue • Used with the IBM Watson services • Conversion of JSON to POJO • Makes @Annotations available in Java back end
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- 12. Running it onIBM Bluemix
- 13. Overview • Bluemix isIBM PaaS, with various services • The services we used.
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- 15. Deploy to IBMBluemix • Fill the Bluemix Manifest file under Application Configuration • Will result in a yaml file
- 16. Deploy to IBMBluemix • Set location of deployment • Add shared-plugin folder • Add the OSGi plugins
- 17. Deploy to IBMBluemix • Deploy Application
- 18. Store it inCloudant
- 19. What is Cloudant •It is the cloud version of CouchDb • It is document based • CouchDb is created by Damien Katz • Cloudant is bought by IBM • Is like MongoDb or NSF a NoSQL datastore
- 20. What is Cloudant •Data stored as JSON • View and Search ‘formula’ defined in javascript • Replication • Tasks • Build in API • No annoying limitations
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- 22. Design document • Specialtype of document • Holds javascript for View and FT Search definition.
- 23. • It isJSON everywhere. • _rev and _id are reserved parameters. • doc{}, is the actual data from application Document
- 24. Attachment @ Cloudant •Stored as base64 encoded String • Can be as standalone • Or as part of Document (we choose this way) • Store id as attachmentId, so it can be retrieved when needed
- 25. Attachment @ Cloudant •AttachmentDAO
- 26. Attachment @ Cloudant •AttachmentController • Convert upload to Attachment object
- 27. Attachment @ Cloudant •ControllerBase • All controllers can use these methods
- 28. Attachment @ Cloudant •Servlet is called in application for download • base64 data for the image tag
- 29. Analyse it withIBM Watson
- 30. Watson API explorer •Very useful to test input and see what is returned
- 31. Services we used •Tone analyser, to get the tone of the text • Personality Insight, to determine the personality of the job applicant • AlchemyLanguage, to get the keywords from the Job and Job application (now "Watson Natural Language Understanding”)
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- 33. Tone analyser • Thesame structure to call the Watson services
- 34. Tone analyser • ToneAnalyzerRequestcontain the text to analyse • ToneAnalyzerInjector gets text from model class
- 35. Tone analyser • Postthe data to IBM Watson service (1) • Convert the response back to Java class (2) 1 2
- 36. Tone analyser • ToneAnalyzerResponseholds the results • Use @annotations from Jackson to map JSON to properties • Result is the source of the charts
- 37. Show it withcharts
- 38. ChartJS • Open sourceHTML5 javascript based • Responsive • DataSets = Array of Objects
- 39. ChartJS • Factory toproduce the chart data, accepts objects • Factory set default Chart Type, like Radar or Bar
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- 41. ChartJS • Custom controlto display data
- 42. ChartJS • Custom controlto display data.
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- 44. Lessons learned • NoSingle Sign On service on all datacenters • Manifest yaml file and GIT are not an happy couple • API’s are not consistent across Watson services • Cloudant is a very reliable, flexible and fast NoSQL datastore • IBM Watson services are really powerful.
- 45. Lessons learned • Thereis no RichText on the web, it is HTML • Handling attachments on Cloudant was a challenge. Took some time get a robust solution. • BTW the way, we won the competition ;-)
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- 47. The future • Moveon as commercial service / solution (in progress) • Let it work with Domino authentication (done) • Change AlchemyLanguage service to Natural Language Understanding service. (done) • Add Document Conversion service (in progress) • Add support for more NoSQL datastores (NSF done, MongoDb in progress) • More to come…..
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- 49. Resources • HR Assistanton Bluemix • https://hrassistant1.mybluemix.net/ • HR Assistant code on GitHub • https://github.com/flinden68/HR-Assistant • IBM Watson services • https://www.ibm.com/watson/developercloud/services-catalog.html • IBM Cloudant documentation • https://docs.cloudant.com/ • HR Assistant Demo • https://youtu.be/yM5Foxn9Fvg
- 50. Resources • OSGi Cloudantconnector • https://bitbucket.org/flinden68/cloudant-connector • OSGi Jackson JSON Wrapper • https://bitbucket.org/flinden68/jackson-json-mapper-plugin • ChartJS • http://www.chartjs.org/ • Watson API Explorer • https://watson-api-explorer.mybluemix.net/
- 51. Reach out tome • @flinden68 • http://www.elstarit.nl • flinden68@elstarit.nl • https://nl.linkedin.com/in/flinden68