Customizing the CapabilityStatement
Per the FHIR specification, any compliant FHIR REST server must support the FHIR Capabilities operation. This operation is typically invoked by clients by requesting [baseUrl]/metadata from the server.
The Capabilities operation requires the server to return a valid CapabilityStatement resource describing the supported resources, operations, search parameters, and other capabilities of the server.
The HAPI FHIR RestfulServer will automatically generate a CapabilityStatement which describes its abilities.
You can customize the generated CapabiliityStatement by creating a server interceptor and registering it against the server. This interceptor should implement a hook method for the SERVER_CAPABILITY_STATEMENT_GENERATED pointcut.
An example is shown below:
@Interceptor
public class CapabilityStatementCustomizer {
@Hook(Pointcut.SERVER_CAPABILITY_STATEMENT_GENERATED)
public void customize(IBaseConformance theCapabilityStatement) {
// Cast to the appropriate version
CapabilityStatement cs = (CapabilityStatement) theCapabilityStatement;
// Customize the CapabilityStatement as desired
cs
.getSoftware()
.setName("Acme FHIR Server")
.setVersion("1.0")
.setReleaseDateElement(new DateTimeType("2021-02-06"));
}
}