Replicate Multiple FHIR Accounts


Replicate multiple FHIR accounts to one or many databases.

CData Sync for FHIR is a stand-alone application that provides solutions for a variety of replication scenarios such as replicating sandbox and production instances into your database. Both Sync for Windows and Sync for Java include a command-line interface (CLI) that makes it easy to manage multiple FHIR connections. In this article we show how to use the CLI to replicate multiple FHIR accounts.

Configure FHIR Connections

You can save connection and email notification settings in an XML configuration file. To replicate multiple FHIR accounts, use multiple configuration files. Below is an example configuration to replicate FHIR to SQLite:

Windows

<?xml version="1.0" encoding="UTF-8" ?> <CDataSync> <DatabaseType>SQLite</DatabaseType> <DatabaseProvider>System.Data.SQLite</DatabaseProvider> <ConnectionString>URL=http://test.fhir.org/r4b/;ConnectionType=Generic;ContentType=JSON;AuthScheme=None;</ConnectionString> <ReplicateAll>False</ReplicateAll> <NotificationUserName></NotificationUserName> <DatabaseConnectionString>Data Source=C:\my.db</DatabaseConnectionString> <TaskSchedulerStartTime>09:51</TaskSchedulerStartTime> <TaskSchedulerInterval>Never</TaskSchedulerInterval> </CDataSync>

Java

<?xml version="1.0" encoding="UTF-8" ?> <CDataSync> <DatabaseType>SQLite</DatabaseType> <DatabaseProvider>org.sqlite.JDBC</DatabaseProvider> <ConnectionString>URL=http://test.fhir.org/r4b/;ConnectionType=Generic;ContentType=JSON;AuthScheme=None;</ConnectionString> <ReplicateAll>False</ReplicateAll> <NotificationUserName></NotificationUserName> <DatabaseConnectionString>Data Source=C:\my.db</DatabaseConnectionString> </CDataSync>

Set URL to the Service Base URL of the FHIR server. This is the address where the resources are defined in the FHIR server you would like to connect to. Set ConnectionType to a supported connection type. Set ContentType to the format of your documents. Set AuthScheme based on the authentication requirements for your FHIR server.

Generic, Azure-based, AWS-based, and Google-based FHIR server implementations are supported.

Sample Service Base URLs

  • Generic: http://my_fhir_server/r4b/
  • Azure: https://MY_AZURE_FHIR.azurehealthcareapis.com/
  • AWS: https://healthlake.REGION.amazonaws.com/datastore/DATASTORE_ID/r4/
  • Google: https://healthcare.googleapis.com/v1/projects/PROJECT_ID/locations/LOCATION/datasets/DATASET_ID/fhirStores/FHIR_STORE_ID/fhir/

Generic FHIR Instances

The product supports connections to custom instances of FHIR. Authentication to custom FHIR servers is handled via OAuth (read more about OAuth in the Help documentation. Before you can connect to custom FHIR instances, you must set ConnectionType to Generic.

Configure Queries for Each FHIR Instance

Sync enables you to control replication with standard SQL. The REPLICATE statement is a high-level command that caches and maintains a table in your database. You can define any SELECT query supported by the FHIR API. The statement below caches and incrementally updates a table of FHIR data:

REPLICATE Patient;

You can specify a file containing the replication queries you want to use to update a particular database. Separate replication statements with semicolons. The following options are useful if you are replicating multiple FHIR accounts into the same database:

You can use a different table prefix in the REPLICATE SELECT statement:

REPLICATE PROD_Patient SELECT * FROM Patient

Alternatively, you can use a different schema:

REPLICATE PROD.Patient SELECT * FROM Patient

Run Sync

After you have configured the connection strings and replication queries, you can run Sync with the following command-line options:

Windows

FHIRSync.exe -g MyProductionFHIRConfig.xml -f MyProductionFHIRSync.sql

Java

java -Xbootclasspath/p:c:\sqlitejdbc.jar -jar FHIRSync.jar -g MyProductionFHIRConfig.xml -f MyProductionFHIRSync.sql

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