Adding logging

Author: CalvinAllen

client/src/pages/Error.tsx

@@ -1,6 +1,11 @@
 import pets from '/src/assets/images/pets.png';
 
 export const Error = () => {
+
+
+    const numbers = [0,1,2];
+    const theNumber = numbers[10];
+
   return (
     <>
       <div className="row">
@@ -9,6 +14,7 @@ export const Error = () => {
         </div>
       </div>
       <h2>Something happened...</h2>
+        <h3>{theNumber}</h3>
     </>
   );
 };

src/main/java/org/springframework/samples/petclinic/clm/RandomExceptionGenerator.java

@@ -1,6 +1,8 @@
 package org.springframework.samples.petclinic.clm;
 
 import com.newrelic.api.agent.Trace;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.util.List;
 import java.util.Random;
@@ -9,6 +11,8 @@
 
 public class RandomExceptionGenerator {
 
+	private static final Logger logger = LoggerFactory.getLogger(RandomExceptionGenerator.class);
+
 	private static final String[] words = {
 		"Quantum", "Flux", "Anomaly", "Paradox", "Entropy", "Singularity", "Nebula", "Vortex", "Pulsar", "Quasar",
 		"Eclipse", "Galaxy", "Meteor", "Orbit", "Blackhole", "Asteroid", "Comet", "Supernova", "Cosmos", "Universe",
@@ -63,6 +67,9 @@ private static String generateRandomMessage(Random random) {
 				message.append(" ");
 			}
 		}
-		return message.toString();
+		String finalMessage = message.toString();
+		logger.info("Generated Random Message: {}", finalMessage);
+
+		return finalMessage;
 	}
 }

src/main/java/org/springframework/samples/petclinic/owner/OwnerController.java

@@ -20,9 +20,12 @@
 
 import jakarta.validation.Valid;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.Pageable;
+import org.springframework.samples.petclinic.clm.ClmController;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.validation.BindingResult;
@@ -49,6 +52,7 @@ class OwnerController {
 	private static final String VIEWS_OWNER_CREATE_OR_UPDATE_FORM = "owners/createOrUpdateOwnerForm";
 
 	private final OwnerRepository owners;
+	private static final Logger logger = LoggerFactory.getLogger(OwnerController.class);
 
 	public OwnerController(OwnerRepository clinicService) {
 		this.owners = clinicService;
@@ -61,7 +65,12 @@ public void setAllowedFields(WebDataBinder dataBinder) {
 
 	@ModelAttribute("owner")
 	public Owner findOwner(@PathVariable(name = "ownerId", required = false) Integer ownerId) {
-		return ownerId == null ? new Owner() : this.owners.findById(ownerId);
+		if(ownerId == null) {
+			logger.info("OwnerId NULL");
+			return new Owner();
+		}
+
+		return this.owners.findById(ownerId);
 	}
 
 	@GetMapping("/owners/new")
@@ -74,6 +83,7 @@ public String initCreationForm(Map<String, Object> model) {
 	@PostMapping("/owners/new")
 	public String processCreationForm(@Valid Owner owner, BindingResult result, RedirectAttributes redirectAttributes) {
 		if (result.hasErrors()) {
+			logger.error("Error Creating New Owner; Validation Failed");
 			redirectAttributes.addFlashAttribute("error", "There was an error in creating the owner.");
 			return VIEWS_OWNER_CREATE_OR_UPDATE_FORM;
 		}
@@ -143,6 +153,7 @@ public String initUpdateOwnerForm(@PathVariable("ownerId") int ownerId, Model mo
 	public String processUpdateOwnerForm(@Valid Owner owner, BindingResult result, @PathVariable("ownerId") int ownerId,
 			RedirectAttributes redirectAttributes) {
 		if (result.hasErrors()) {
+			logger.error("Error Updating Owner; Validation Failed");
 			redirectAttributes.addFlashAttribute("error", "There was an error in updating the owner.");
 			return VIEWS_OWNER_CREATE_OR_UPDATE_FORM;
 		}