Added Redis Caching for Authorization Services

pom.xml

@@ -104,6 +104,12 @@
 			<version>1.14.0</version>
 		</dependency>
 
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-redis</artifactId>
+		</dependency>
+
+
 		<!-- Lombok -->
 		<dependency>
 			<groupId>org.projectlombok</groupId>

src/main/java/com/hrms/Human_Resource_Management_System_Back/HumanResourceManagementSystemBackApplication.java

@@ -3,9 +3,11 @@
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.domain.EntityScan;
+import org.springframework.cache.annotation.EnableCaching;
 import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 import org.springframework.transaction.annotation.EnableTransactionManagement;
 
+@EnableCaching
 @SpringBootApplication
 @EntityScan(basePackages = {
 		"com.hrms.Human_Resource_Management_System_Back.model",

src/main/java/com/hrms/Human_Resource_Management_System_Back/config/RedisConfig.java

@@ -0,0 +1,29 @@
+package com.hrms.Human_Resource_Management_System_Back.config;
+
+import org.springframework.cache.annotation.EnableCaching;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.cache.RedisCacheConfiguration;
+import org.springframework.data.redis.cache.RedisCacheManager;
+import org.springframework.data.redis.connection.RedisConnectionFactory;
+import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+
+@Configuration
+@EnableCaching
+public class RedisConfig {
+
+    @Bean
+    public RedisCacheManager cacheManager(RedisConnectionFactory connectionFactory) {
+        RedisSerializationContext.SerializationPair<Object> valueSerializationPair =
+                RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer());
+
+        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
+                .serializeValuesWith(valueSerializationPair);
+
+        return RedisCacheManager.builder(connectionFactory)
+                .cacheDefaults(config)
+                .build();
+    }
+}
+

src/main/java/com/hrms/Human_Resource_Management_System_Back/service/TenantPermissionService.java

@@ -3,8 +3,12 @@
 import com.hrms.Human_Resource_Management_System_Back.model.TenantPermission;
 import com.hrms.Human_Resource_Management_System_Back.repository.TenantPermissionRepository;
 import lombok.AllArgsConstructor;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 /**
  * Service class for handling business logic related to tenant permissions.
  * <p>
@@ -17,6 +21,7 @@
 public class TenantPermissionService extends BaseService<TenantPermission, Integer> {
     private final TenantPermissionRepository repo;
 
+
     /**
      * Returns the tenant permission repository.
      * <p>
@@ -30,4 +35,28 @@ public class TenantPermissionService extends BaseService<TenantPermission, Integ
     protected TenantPermissionRepository getRepository() {
         return repo;
     }
+
+    @Override
+    @Cacheable("permissions")
+    public List<TenantPermission> findAll() {
+        return super.findAll();
+    }
+
+    /**
+     * Evict cache when a permission is added or updated.
+     */
+    @Override
+    @CacheEvict(value = "permissions", allEntries = true)
+    public TenantPermission save(TenantPermission entity) {
+        return super.save(entity);
+    }
+
+    /**
+     * Evict cache when a permission is deleted.
+     */
+    @Override
+    @CacheEvict(value = "permissions", allEntries = true)
+    public void deleteById(Integer id) {
+        super.deleteById(id);
+    }
 }

src/main/java/com/hrms/Human_Resource_Management_System_Back/service/tenant/RolePermissionService.java

@@ -10,6 +10,8 @@
 import com.hrms.Human_Resource_Management_System_Back.repository.tenant.RoleRepository;
 import com.hrms.Human_Resource_Management_System_Back.service.BaseService;
 import lombok.AllArgsConstructor;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -72,8 +74,10 @@ protected RolePermissionRepository getRepository() {
      * @return a list of {@link UserRolePermissionDto} representing the filtered and processed permissions for the user tenant
      */
     @Transactional
+    @Cacheable(value = "user-role-permissions", key = "#id")
     public List<UserRolePermissionDto> getUserRolePermissions(Integer id) {
         List<UserRolePermissionDto> list = repo.findScopedPermissionsByUserTenantId(id);
+        System.out.println("KALTRINAAAAA?????????!!!!!!!!!");
 
         HashMap<String, UserRolePermissionDto> hashMap = new HashMap<>();
 
@@ -130,6 +134,7 @@ private String bytesToHex(byte[] bytes) {
      * @param roleId the role ID to retrieve permissions for
      * @return a list of {@link RolePermission} associated with the given role ID
      */
+    @Cacheable(value = "role-permissions", key = "#roleId")
     public List<RolePermission> findByRoleId(Integer roleId) {
         return repo.findAllByRole_RoleId(roleId);
     }
@@ -145,6 +150,7 @@ public List<RolePermission> findByRoleId(Integer roleId) {
      * @param req the request containing the new permission and target role IDs
      */
     @Transactional
+    @CacheEvict(value = "user-role-permissions", key = "#roleId")
     public void replacePermissions(Integer roleId, RolePermissionReplaceRequest req) {
         repo.deleteByRoleId(roleId);   // JPQL @Modifying DELETE, inside Tx
 

src/main/java/com/hrms/Human_Resource_Management_System_Back/service/tenant/RoleService.java

@@ -4,8 +4,12 @@
 import com.hrms.Human_Resource_Management_System_Back.repository.tenant.RoleRepository;
 import com.hrms.Human_Resource_Management_System_Back.service.BaseService;
 import lombok.AllArgsConstructor;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 
+import java.util.List;
+
 /**
  * Service class for handling business logic related to roles.
  * <p>
@@ -35,4 +39,22 @@ public class RoleService extends BaseService<Role, Integer> {
     protected RoleRepository getRepository() {
         return repo;
     }
+
+    @Override
+    @Cacheable("roles")
+    public List<Role> findAll() {
+        return super.findAll();
+    }
+
+    @Override
+    @CacheEvict(value = "roles", allEntries = true)
+    public Role save(Role entity) {
+        return super.save(entity);
+    }
+
+    @Override
+    @CacheEvict(value = "roles", allEntries = true)
+    public void deleteById(Integer id) {
+        super.deleteById(id);
+    }
 }

src/main/java/com/hrms/Human_Resource_Management_System_Back/service/tenant/UserRoleService.java

@@ -8,6 +8,8 @@
 import com.hrms.Human_Resource_Management_System_Back.service.BaseService;
 import jakarta.transaction.Transactional;
 import lombok.AllArgsConstructor;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 
 import java.util.List;
@@ -75,6 +77,7 @@ public List<UserRole> getUserRoles(Integer userId) {
      * @param userTenantId the ID of the user tenant whose roles are to be fetched
      * @return a list of {@link UserRole} associated with the user tenant ID
      */
+    @Cacheable(value = "user-roles", key = "#userTenantId")
     public List<UserRole> findByUserTenantId(Integer userTenantId) {
         return repo.findAllByUserTenant_UserTenantId(userTenantId);
     }
@@ -90,6 +93,7 @@ public List<UserRole> findByUserTenantId(Integer userTenantId) {
      * @param roleIds a list of role IDs to assign to the user tenant
      */
     @Transactional
+    @CacheEvict(value = "user-roles", key = "#userTenantId")
     public void replaceRoles(Integer userTenantId, List<Integer> roleIds) {
         // Delete existing roles for the user tenant
         repo.deleteByUserTenantId(userTenantId);

src/main/resources/application.yml

@@ -9,6 +9,14 @@ spring:
     password: 1234
     driver-class-name: org.postgresql.Driver
 
+  cache:
+    type: redis
+
+  data:
+    redis:
+      host: localhost
+      port: 6379
+
 
   jpa:
     transaction-manager: transactionManager