use of org.opencds.cqf.ruler.cdshooks.evaluation.R4EvaluationContext in project cqf-ruler by DBCG.
the class CdsHooksServlet method doPost.
@Override
@SuppressWarnings("deprecation")
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
logger.info(request.getRequestURI());
try {
// validate that we are dealing with JSON
if (request.getContentType() == null || !request.getContentType().startsWith("application/json")) {
throw new ServletException(String.format("Invalid content type %s. Please use application/json.", request.getContentType()));
}
String baseUrl = this.myAppProperties.getServer_address();
String service = request.getPathInfo().replace("/", "");
JsonParser parser = new JsonParser();
Request cdsHooksRequest = new Request(service, parser.parse(request.getReader()).getAsJsonObject(), JsonHelper.getObjectRequired(getService(service), "prefetch"));
logger.info(cdsHooksRequest.getRequestJson().toString());
Hook hook = HookFactory.createHook(cdsHooksRequest);
String hookName = hook.getRequest().getHook();
logger.info("cds-hooks hook: {}", hookName);
logger.info("cds-hooks hook instance: {}", hook.getRequest().getHookInstance());
logger.info("cds-hooks maxCodesPerQuery: {}", this.getProviderConfiguration().getMaxCodesPerQuery());
logger.info("cds-hooks expandValueSets: {}", this.getProviderConfiguration().getExpandValueSets());
logger.info("cds-hooks searchStyle: {}", this.getProviderConfiguration().getSearchStyle());
logger.info("cds-hooks prefetch maxUriLength: {}", this.getProviderConfiguration().getMaxUriLength());
logger.info("cds-hooks local server address: {}", baseUrl);
logger.info("cds-hooks fhir server address: {}", hook.getRequest().getFhirServerUrl());
logger.info("cds-hooks cql_logging_enabled: {}", this.getProviderConfiguration().getCqlLoggingEnabled());
PlanDefinition planDefinition = read(Ids.newId(PlanDefinition.class, hook.getRequest().getServiceName()));
AtomicBoolean planDefinitionHookMatchesRequestHook = new AtomicBoolean(false);
planDefinition.getAction().forEach(action -> {
action.getTrigger().forEach(trigger -> {
if (hookName.equals(trigger.getName())) {
planDefinitionHookMatchesRequestHook.set(true);
return;
}
});
if (planDefinitionHookMatchesRequestHook.get()) {
return;
}
});
if (!planDefinitionHookMatchesRequestHook.get()) {
throw new ServletException("ERROR: Request hook does not match the service called.");
}
// No tenant information available, so create local system request
RequestDetails requestDetails = new SystemRequestDetails();
LibraryLoader libraryLoader = libraryLoaderFactory.create(Lists.newArrayList(jpaLibraryContentProviderFactory.create(requestDetails)));
CanonicalType canonical = planDefinition.getLibrary().get(0);
Library library = search(Library.class, Searches.byCanonical(canonical)).single();
org.cqframework.cql.elm.execution.Library elm = libraryLoader.load(new VersionedIdentifier().withId(library.getName()).withVersion(library.getVersion()));
Context context = new Context(elm);
context.setDebugMap(this.getDebugMap());
// provider case
// No tenant information available for cds-hooks
TerminologyProvider serverTerminologyProvider = myJpaTerminologyProviderFactory.create(requestDetails);
context.registerDataProvider("http://hl7.org/fhir", // TODO make sure tooling
fhirRetrieveProviderFactory.create(requestDetails, serverTerminologyProvider));
// handles remote
context.registerTerminologyProvider(serverTerminologyProvider);
context.registerLibraryLoader(libraryLoader);
context.setContextValue("Patient", hook.getRequest().getContext().getPatientId().replace("Patient/", ""));
context.setExpressionCaching(true);
EvaluationContext<PlanDefinition> evaluationContext = new R4EvaluationContext(hook, FhirContext.forCached(FhirVersionEnum.R4).newRestfulGenericClient(baseUrl), context, elm, planDefinition, this.getProviderConfiguration(), this.modelResolver);
this.setAccessControlHeaders(response);
response.setHeader("Content-Type", ContentType.APPLICATION_JSON.getMimeType());
R4HookEvaluator evaluator = new R4HookEvaluator(this.modelResolver);
String jsonResponse = toJsonResponse(evaluator.evaluate(evaluationContext));
logger.info(jsonResponse);
response.getWriter().println(jsonResponse);
} catch (BaseServerResponseException e) {
this.setAccessControlHeaders(response);
// This will be overwritten with the correct status code downstream if needed.
response.setStatus(500);
response.getWriter().println("ERROR: Exception connecting to remote server.");
this.printMessageAndCause(e, response);
this.handleServerResponseException(e, response);
this.printStackTrack(e, response);
logger.error(e.toString());
} catch (DataProviderException e) {
this.setAccessControlHeaders(response);
// This will be overwritten with the correct status code downstream if needed.
response.setStatus(500);
response.getWriter().println("ERROR: Exception in DataProvider.");
this.printMessageAndCause(e, response);
if (e.getCause() != null && (e.getCause() instanceof BaseServerResponseException)) {
this.handleServerResponseException((BaseServerResponseException) e.getCause(), response);
}
this.printStackTrack(e, response);
logger.error(e.toString());
} catch (CqlException e) {
this.setAccessControlHeaders(response);
// This will be overwritten with the correct status code downstream if needed.
response.setStatus(500);
response.getWriter().println("ERROR: Exception in CQL Execution.");
this.printMessageAndCause(e, response);
if (e.getCause() != null && (e.getCause() instanceof BaseServerResponseException)) {
this.handleServerResponseException((BaseServerResponseException) e.getCause(), response);
}
this.printStackTrack(e, response);
logger.error(e.toString());
} catch (Exception e) {
logger.error(e.toString());
throw new ServletException("ERROR: Exception in cds-hooks processing.", e);
}
}
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