handle exception better (#20)

## Summary

- Routine Change

### Details

- handles exceptions better

Author: anthony-nhs

src/main/java/software/nhs/FHIRValidator/HandlerStream.java

@@ -50,9 +50,9 @@ public void handleRequest(InputStream inputStream, OutputStream outputStream, Co
                 writer.close();
             }
 
-        } catch (IOException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
+        } catch (IOException ex) {
+            log.error(ex.getMessage(), ex);
+            throw new RuntimeException("error in handleRequest", ex);
         }
     }
 }

src/main/java/software/nhs/FHIRValidator/Validator.java

@@ -24,6 +24,7 @@
 import ca.uhn.fhir.context.support.DefaultProfileValidationSupport;
 import ca.uhn.fhir.context.support.IValidationSupport;
 import ca.uhn.fhir.context.support.ValidationSupportContext;
+import ca.uhn.fhir.rest.server.exceptions.InternalErrorException;
 import ca.uhn.fhir.rest.server.exceptions.InvalidRequestException;
 import ca.uhn.fhir.validation.FhirValidator;
 import ca.uhn.fhir.validation.ValidationResult;
@@ -62,9 +63,9 @@ public Validator() {
                         individualPackage.version);
                 npmPackageSupport.loadPackageFromClasspath(packagePath);
             }
-        } catch (IOException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
+        } catch (InternalErrorException | IOException ex) {
+            log.error(ex.getMessage(), ex);
+            throw new RuntimeException("error loading simplifier packages", ex);
         }
         supportChain.addValidationSupport(npmPackageSupport);
         generateSnapshots(supportChain);