Component dependencies

Call sequence per pipeline stage

Stage 1 RECEIVE
  └── Hl7v2Parser (HAPI HL7v2 Terser)
  └── MessageIdempotencyFilter (PostgreSQL SELECT)

Stage 2 ENRICH
  └── FacilityCodeResolver → JamFR :8089  GET /fhir/Organization?identifier=MSH-4
  └── MpiClientService     → JamMPI :8081 POST /fhir/Patient/$match

Stage 3 TRANSFORM
  └── Hl7v2ToFhirMapper (local, no network call)
  └── JamTS :8085  GET /fhir/ConceptMap/$translate  (if terminology.enabled)

Stage 4 GOVERN
  └── JamConnectClient → JamConnect :8091 POST /jamconnect/consent/check

Stage 5 PERSIST
  └── FhirClientService → HAPI FHIR :8080 PUT /fhir/{Resource}?identifier=...

Stage 6 DISPATCH
  └── SubscriptionEventDispatcher → HAPI FHIR :8080 (subscription matching)
  └── JamConnectClient → JamConnect :8091 POST /jamconnect/events (POST_WRITE)
  └── DHIS2AdaptorService → DHIS2 (if notifiable LOINC, optional)

Stage 7 ACK
  └── Hl7v2AckBuilder (local)
  └── AtnaService → syslog-ng :6514 (RFC 5425 TLS, async)
  └── AtnaService → HAPI FHIR :8080 POST /fhir/AuditEvent (async)

Dependency availability matrix

Dependency	Required	Fail-closed	Fallback
JamMPI	Yes	Yes — NACK	None
JamFR	Yes	No	Use facility-code from config
AJ Consent	Yes (if enabled)	Yes — NACK	None
JamTS	No	No	Pass local codes through
HAPI FHIR	Yes	Circuit breaker	Queue + retry
JamConnect	No	No	Skip POST_WRITE events
DHIS2	No	No	Skip surveillance push
ATNA syslog	No	No	Log to stdout