<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.18.RELEASE</version>  <relativePath/>  </parent> <groupId>com.example</groupId> <artifactId>logging-service</artifactId> <version>0.0.1-SNAPSHOT</version> <name>logging-service</name> <description>Logging service for user searches</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.postgresql</groupId> <artifactId>postgresql</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> # PostgreSQL Database Configuration spring.datasource.url=jdbc:postgresql://localhost:5432/logdb # Replace with your DB URL spring.datasource.username=your_username # Replace with your DB username spring.datasource.password=your_password # Replace with your DB password spring.datasource.driver-class-name=org.postgresql.Driver # JPA/Hibernate Configuration spring.jpa.hibernate.ddl-auto=update # Automatically update schema. Use 'create' for first run if needed, 'validate' or 'none' in production. spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect spring.jpa.show-sql=true # Show SQL queries in logs (optional) package com.example.loggingservice.entity; import lombok.Data; import lombok.NoArgsConstructor; import javax.persistence.*; import java.time.LocalDateTime; @Entity @Table(name = "search_logs") @Data // Lombok annotation for getters, setters, toString, equals, hashCode @NoArgsConstructor // Lombok annotation for no-args constructor public class LogEntry { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @Column(nullable = false) private String username; @Column(nullable = false) private String searchedId; @Column(nullable = false) private LocalDateTime timestamp; public LogEntry(String username, String searchedId, LocalDateTime timestamp) { this.username = username; this.searchedId = searchedId; this.timestamp = timestamp; } } package com.example.loggingservice.repository; import com.example.loggingservice.entity.LogEntry; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; @Repository public interface LogEntryRepository extends JpaRepository { // JpaRepository provides CRUD methods (save, findById, findAll, delete, etc.) // You can add custom query methods here if needed } package com.example.loggingservice.dto; import lombok.Data; @Data // Lombok annotation for getters, setters, etc. public class LogRequest { private String username; private String searchedId; // Timestamp will be generated server-side } package com.example.loggingservice.service; import com.example.loggingservice.dto.LogRequest; import com.example.loggingservice.entity.LogEntry; import com.example.loggingservice.repository.LogEntryRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import java.time.LocalDateTime; import java.util.List; @Service public class LoggingService { private final LogEntryRepository logEntryRepository; @Autowired public LoggingService(LogEntryRepository logEntryRepository) { this.logEntryRepository = logEntryRepository; } public LogEntry saveLog(LogRequest logRequest) { if (logRequest.getUsername() == null || logRequest.getUsername().isEmpty()) { throw new IllegalArgumentException("Username cannot be empty"); } if (logRequest.getSearchedId() == null || logRequest.getSearchedId().isEmpty()) { throw new IllegalArgumentException("Searched ID cannot be empty"); } LogEntry logEntry = new LogEntry( logRequest.getUsername(), logRequest.getSearchedId(), LocalDateTime.now() // Generate timestamp on the server ); return logEntryRepository.save(logEntry); } public List getAllLogs() { return logEntryRepository.findAll(); } } package com.example.loggingservice.controller; import com.example.loggingservice.dto.LogRequest; import com.example.loggingservice.entity.LogEntry; import com.example.loggingservice.service.LoggingService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import org.springframework.web.bind.annotation.*; import java.util.List; @RestController @RequestMapping("/api/logs") // Base path for logging endpoints @CrossOrigin(origins = "*") // Allow requests from any origin (adjust for production) public class LoggingController { private final LoggingService loggingService; @Autowired public LoggingController(LoggingService loggingService) { this.loggingService = loggingService; } @PostMapping public ResponseEntity createLog(@RequestBody LogRequest logRequest) { try { LogEntry savedLog = loggingService.saveLog(logRequest); return new ResponseEntity<>(savedLog, HttpStatus.CREATED); } catch (IllegalArgumentException e) { return new ResponseEntity<>(e.getMessage(), HttpStatus.BAD_REQUEST); } catch (Exception e) { // Log the exception e return new ResponseEntity<>("Error saving log entry.", HttpStatus.INTERNAL_SERVER_ERROR); } } @GetMapping public ResponseEntity> getAllLogs() { try { List logs = loggingService.getAllLogs(); return ResponseEntity.ok(logs); } catch (Exception e) { // Log the exception e return new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR); } } } package com.example.loggingservice; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class LoggingServiceApplication { public static void main(String[] args) { SpringApplication.run(LoggingServiceApplication.class, args); } }