Fix SonarQube issues

spring-petclinic-genai-service/src/main/java/org/springframework/samples/petclinic/genai/AIFunctionConfiguration.java

@@ -3,6 +3,8 @@
 import java.util.List;
 import java.util.function.Function;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Description;
@@ -27,6 +29,8 @@
 @Configuration
 class AIFunctionConfiguration {
 
+    private static final Logger LOG = LoggerFactory.getLogger(AIFunctionConfiguration.class);
+
 	// The @Description annotation helps the model understand when to call the function
 	@Bean
 	@Description("List the owners that the pet clinic has")
@@ -49,7 +53,7 @@ public Function<VetRequest, VetResponse> listVets(AIDataProvider petclinicAiProv
 				return petclinicAiProvider.getVets(request);
 			}
 			catch (JsonProcessingException e) {
-				e.printStackTrace();
+                LOG.error("Error processing JSON in the listVets function", e);
 				return null;
 			}
 		};

spring-petclinic-genai-service/src/main/java/org/springframework/samples/petclinic/genai/PetclinicChatClient.java

@@ -2,6 +2,8 @@
 
 import static org.springframework.ai.chat.client.advisor.AbstractChatMemoryAdvisor.DEFAULT_CHAT_MEMORY_CONVERSATION_ID;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.ai.chat.client.ChatClient;
 import org.springframework.ai.chat.client.advisor.MessageChatMemoryAdvisor;
 import org.springframework.ai.chat.client.advisor.SimpleLoggerAdvisor;
@@ -20,26 +22,28 @@
 @RequestMapping("/")
 public class PetclinicChatClient {
 
+    private static final Logger LOG = LoggerFactory.getLogger(PetclinicChatClient.class);
+
 	// ChatModel is the primary interfaces for interacting with an LLM
 	// it is a request/response interface that implements the ModelModel
 	// interface. Make suer to visit the source code of the ChatModel and
-	// checkout the interfaces in the core spring ai package.
+	// checkout the interfaces in the core Spring AI package.
 	private final ChatClient chatClient;
 
 	public PetclinicChatClient(ChatClient.Builder builder, ChatMemory chatMemory) {
 		// @formatter:off
 		this.chatClient = builder
 				.defaultSystem("""
-			      		You are a friendly AI assistant designed to help with the management of a veterinarian pet clinic called Spring Petclinic.
-			      		Your job is to answer questions about and to perform actions on the user's behalf, mainly around
-			      		veterinarians, owners, owners' pets and owners' visits.
-			      		You are required to answer an a professional manner. If you don't know the answer, politely tell the user
-			      		you don't know the answer, then ask the user a followup question to try and clarify the question they are asking.
-			      		If you do know the answer, provide the answer but do not provide any additional followup questions.
-			      		When dealing with vets, if the user is unsure about the returned results, explain that there may be additional data that was not returned.
-			      		Only if the user is asking about the total number of all vets, answer that there are a lot and ask for some additional criteria.
-			      		For owners, pets or visits - provide the correct data.
-			      		""")
+                          You are a friendly AI assistant designed to help with the management of a veterinarian pet clinic called Spring Petclinic.
+                          Your job is to answer questions about and to perform actions on the user's behalf, mainly around
+                          veterinarians, owners, owners' pets and owners' visits.
+                          You are required to answer an a professional manner. If you don't know the answer, politely tell the user
+                          you don't know the answer, then ask the user a followup question to try and clarify the question they are asking.
+                          If you do know the answer, provide the answer but do not provide any additional followup questions.
+                          When dealing with vets, if the user is unsure about the returned results, explain that there may be additional data that was not returned.
+                          Only if the user is asking about the total number of all vets, answer that there are a lot and ask for some additional criteria.
+                          For owners, pets or visits - provide the correct data.
+                          """)
 				.defaultAdvisors(
 						// Chat memory helps us keep context when using the chatbot for up to 10 previous messages.
 						new MessageChatMemoryAdvisor(chatMemory, DEFAULT_CHAT_MEMORY_CONVERSATION_ID, 10), // CHAT MEMORY
@@ -64,7 +68,7 @@ public String exchange(@RequestBody String query) {
 	      .call()
 	      .content();
 	  } catch (Exception exception) {
-		  exception.printStackTrace();
+          LOG.error("Error processing chat message", exception);
  	      return "Chat is currently unavailable. Please try again later.";
 	  }
   }

spring-petclinic-genai-service/src/main/java/org/springframework/samples/petclinic/genai/VectorStoreController.java

@@ -2,8 +2,14 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.attribute.FileAttribute;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.PosixFilePermissions;
 import java.util.List;
+import java.util.Set;
 
+import org.apache.commons.lang3.SystemUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.ai.document.Document;
@@ -36,9 +42,8 @@ public class VectorStoreController {
 
 	private final VectorStore vectorStore;
     private final WebClient webClient;
-    private final String vetsHostname = "http://vets-service/";
-
-	public VectorStoreController(VectorStore vectorStore, WebClient.Builder webClientBuilder) throws IOException {
+
+    public VectorStoreController(VectorStore vectorStore, WebClient.Builder webClientBuilder) {
 		this.webClient = webClientBuilder.build();
 		this.vectorStore = vectorStore;
 	}
@@ -61,7 +66,8 @@ public void loadVetDataToVectorStoreOnStartup(ApplicationStartedEvent event) thr
 		// If vectorstore.json is deleted, the data will be loaded on startup every time.
 		// Warning - this can be costly in terms of credits used with the AI provider.
 		// Fetches all Vet entites and creates a document per vet
-			List<Vet> vets = webClient
+        String vetsHostname = "http://vets-service/";
+        List<Vet> vets = webClient
 	            .get()
 	            .uri(vetsHostname + "vets")
 	            .retrieve()
@@ -77,7 +83,18 @@ public void loadVetDataToVectorStoreOnStartup(ApplicationStartedEvent event) thr
 		this.vectorStore.add(documents);
 
 		if (vectorStore instanceof SimpleVectorStore) {
-			var file = File.createTempFile("vectorstore", ".json");
+            File file;
+            if(SystemUtils.IS_OS_UNIX) {
+                // java:S5443 Sonar rule: Using publicly writable directories is security-sensitive
+                FileAttribute<Set<PosixFilePermission>> attr = PosixFilePermissions.asFileAttribute(PosixFilePermissions.fromString("rwx------"));
+                file = Files.createTempFile("vectorstore", ".json", attr).toFile();
+            }
+            else {
+                file= Files.createTempFile("vectorstore", ".json").toFile();
+                file.setReadable(true, true);
+                file.setWritable(true, true);
+                file.setExecutable(true, true);
+            }
 			((SimpleVectorStore) this.vectorStore).save(file);
 			logger.info("vector store contents written to {}", file.getAbsolutePath());
 		}
@@ -98,7 +115,7 @@ public Resource convertListToJsonResource(List<Vet> vets) {
 			return new ByteArrayResource(jsonBytes);
 		}
 		catch (JsonProcessingException e) {
-			e.printStackTrace();
+            logger.error("Error processing JSON in the convertListToJsonResource function", e);
 			return null;
 		}
 	}