Introduction

Build out a high-level description of each service to complement the Application Architecture diagram

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• TIS-SYNC is a container for background and long-running 'batch' jobs that synchronise data and update cached values.
• It currently .
  • ESR ETL: A spring-boot application which runs on a daily basis multiple times with different load types. 
  • ESR service: A spring-boot application running as a service and is used to persist and retrieve ESR data.

• The overall data flow and systems integration can be seen here: ESR-TIS Inbound and Outbound flows (MVP)
• A simplified flow and schedule details are shown below:

Where and When

The applications have their own github repositores.

• ESR Serviceis one package with a dependency of TCS persistence and reference client.

• It currently comprises 5 separate jobs (listed in "What it does") which assume they are run in a particular order.
• The jobs are currently duplicated in TCS but are scheduled to run a minute earlier by default

Where and When

SCM:

• TIS-SYNC: https://github.com/Health-Education-England/TIS-ESRSYNC
• ESR ETL: https://github.com/Health-Education-England/TIS-ESR-ETL

The ESR-ETL application is run from a Jenkins cron: 

• The application cron job: https://build.tis.nhs.uk/jenkins/job/tis-esr-etl-cron/
• The details of the schedules for the cron job can be found here: ESR Schedules
• There is a FTP sync process which takes care of syncing files between Azure(TIS owned) and FTP server (ESR owned). 
  • This process is scheduled as a Jenkins job and runs multiple times a day and can be found here: https://build.tis.nhs.uk/jenkins/job/tis-esr-ftpsync-cron-prod/
  • The schedule details are available under: ESR Schedules

What it does

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Deployment:

• Currently deployed on

The 5 jobs are triggered by cron schedule on methods in a Java class for each job.  The schedule can be set in the container by defining the cron as an environment variable or startup parameter.

• The default schedules for the cron jobs can be found here: ETL Timings

What it does

There are 5 Jobs:

• personPlacementEmployingBodyTrustJob: Truncates and repopulates the list
• It receives RMT files in changed (RMC) or full (RMF) mode. It processes and stores POR and POS records from the files.
  • The POR and POS records are persisted in ESR database (mySQL) using ESR service.
• Each of the above files are received per deanery/local office and all the files produced are as well per deanery.
• For each of the deanery posts ESR requests corresponding APP file containing applicant records in placement for the post is generated. The following restriction applies for the selection:
  • Only the future applicant placements are selected.
  • The selected future placements should have a start date between 2 days from that day to 3 months. 
  • It uses TCS service to fetch the post, placement and trainee details.
  • The applicant records are stored in ESR database using ESR service.
• A notification file (DNF - full notifications and DNC - changed notifications) is sent per deanery on a daily basis.
  • The notification records tracks all the events happening in TIS and creates different notification types outlined in the ESR spec. This is a way of updating ESR about the changes happening in TIS.
  • The TIS notification events are tracked and stored in TCS database in the EsrNotification table using the TCS service. This records only the TIS contents.
  • All of the final notification records generated are stored in ESR database using the ESR service.
• An acknowledgement is generated for each RMT file processed and similarly an acknowledgement file (APC) is received from ESR for each APP file sent.
  • These APC records are stored in the ESR database using the ESR service.
• The ESR service and ESR-ETL use profile/keycloak for user authentication and have an ESR specific user configured for the same.

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