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Jeremy will review some of the work he has been doing in data migration using work flows at TAMU. Discussion to follow.

PowerPoint Jeremy reviewed

Document

Exploring process of using a workflow engine for the migration process (Voyager to FOLIO)

• Proof of Concept using "Organizations"
  
  
• Architecture
  • mod-data-extractor - persist a custom query, starting point in the process - execute query and stream response of query
  • mod-workflow - provides an abstraction for the workflow engine.  can persist a workflow, dynamically generates xml needed to execute(?)
  • mod-camunda - service wrapper around Camunda workflow engine.  Event listening to trigger workflows registered with it
  • mod-organization-storage - destination for all migrated data for this POC
    
    
• Workflow tasks (e.g. ExtractorTask, ProcessorTask, CreateForEachTask, AccumulatorTask)
  • Support for multiple scripting languages.  They used JS.
  • Used APIs
    
    
• Results
  • slightly disappointing
  • created 7,294 organizations, 1,577 contacts...this took 45 minutes.  At 3-4,000 it would slow and stop....would stop for 35 minutes, resume and finish...maybe a database indexing issue?
  • They will be investigating
  • If indexing is the problem...a batch loading process may help
  • They may investigate the way the DB is setup via RAML module builder.  Maybe turn off indexing during the load?
  • The process was run on a dev machine (40GB RAM) pointing to FOLIO/Cloud
  • Getting this running in the same ecosystem will be a next step
    
    
• Conclusions
  • Has potential, capable or of orchestrating complex migration....
  • Figure out slowdown
  • Move dynamic workflow creation from mod-workflow into mod-camunda
  • Explore batch create endpoints
  • ...see further details in the powerpoint & document
    
    

Chicago has experience investigating indexing issues.  May be able to help.

Q: What determines which scripting languages are supported?  → JVM support of various scripting languages.  Several enabled at this time – JS, Ruby, Perl, Python...5-6....more could be added to the that.  Javax script package.  Future plan – UI interface to pick scripting language.

Q: How do you handle reference data?  Lookup Tables?  → For this POCs...they statically expressed them in the script.  Created manually ahead of time.  Feasible for categories - small set a data.  Future – some sort of delegate that does lookup.  Chicago generates the IDs ahead of time in their migration process.

Q: Advantages over a scripting language?  Using the workflow doesn't offer as much as it seems to...scripts can solve the same problem.  (e.g. they had a set of Perl scripts that accomplished some data migration).  However...

• Workflow - gave them a chance to explore using workflows against FOLIO API
• They've created a reusable framework for interacting with FOLIO...supporting different processes that will vary from institution to institution
  1. Extracting the data 
  2. Processing of the data
• This could also be used to migrate data from FOLIO to a new version of FOLIO

Link to public repo. in PowerPoint.  

Possible agenda item for next week - more questions about this POC.

Discussion

Tabled for lack of time