[CAMEL-18004] Camel FHIR - Custom Header and Query Parameters

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 3.16.0
• Component/s: camel-fhir
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: Jawad Ahmad
• Created: 22/Apr/22 10:37
• Updated: 22/Apr/22 14:22
• Resolved: 22/Apr/22 14:22

Description

We are trying to integrate NHS FHIR API with our Salesforce instance. We are connecting with NHS using FHIR component. NHS Payloads are on FHIR R4 with UK Extensions.

The issue we are facing is that, apart from standard extra params, NHS API except for a few custom parameters in requests as well. There seems to be no way to add those in FHIR operations, I was able to add independent headers e.g Request ID using an HTTP interceptor but for parameters that are dependent on the current requests, I can't see any way to provide those in requests.

Look at this [NHS Summary Care Record FHIR API|
https://digital.nhs.uk/developer/api-catalogue/summary-care-record-fhir#:~:text=to%20follow%20later.-,Overview,in%20the%20patient's%20direct%20care.] it excepts a few extra parameters apart from ID.

It requires these extra parameters :

composition.identifier ( This is identifier of Bundle ID)
composition.subject:Patient.identifier (The patient's NHS number. Must be preceded with FHIR identifier (eg."composition.subject:Patient.identifier=https://fhir.nhs.uk/Id/nhs-number|9000000009"))

I don't see a way to provide these in FHIR Read Operations. Maybe an improvement can be done to extend ExtraParameters implementation to allow custom parameters as well.