diff --git a/.gitattributes b/.gitattributes new file mode 100644 index 0000000000..3b41682ac5 --- /dev/null +++ b/.gitattributes @@ -0,0 +1,2 @@ +/mvnw text eol=lf +*.cmd text eol=crlf diff --git a/.gitignore b/.gitignore index 67045665db..4614576fee 100644 --- a/.gitignore +++ b/.gitignore @@ -6,99 +6,50 @@ yarn-debug.log* yarn-error.log* lerna-debug.log* -# Diagnostic reports (https://nodejs.org/api/report.html) -report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json - # Runtime data pids *.pid *.seed *.pid.lock -# Directory for instrumented libs generated by jscoverage/JSCover -lib-cov - -# Coverage directory used by tools like istanbul -coverage -*.lcov - -# nyc test coverage -.nyc_output - -# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files) -.grunt - -# Bower dependency directory (https://bower.io/) -bower_components - -# node-waf configuration -.lock-wscript - -# Compiled binary addons (https://nodejs.org/api/addons.html) -build/Release - # Dependency directories node_modules/ -jspm_packages/ - -# TypeScript v1 declaration files -typings/ - -# TypeScript cache -*.tsbuildinfo - -# Optional npm cache directory -.npm - -# Optional eslint cache -.eslintcache - -# Microbundle cache -.rpt2_cache/ -.rts2_cache_cjs/ -.rts2_cache_es/ -.rts2_cache_umd/ - -# Optional REPL history -.node_repl_history - -# Output of 'npm pack' -*.tgz - -# Yarn Integrity file -.yarn-integrity # dotenv environment variables file .env .env.test -# parcel-bundler cache (https://parceljs.org/) -.cache - -# Next.js build output -.next - -# Nuxt.js build / generate output -.nuxt -dist - -# Gatsby files -.cache/ -# Comment in the public line in if your project uses Gatsby and *not* Next.js -# https://nextjs.org/blog/next-9-1#public-directory-support -# public - -# vuepress build output -.vuepress/dist - -# Serverless directories -.serverless/ - -# FuseBox cache -.fusebox/ - -# DynamoDB Local files -.dynamodb/ - -# TernJS port file -.tern-port +# ==================== Java / Maven ==================== +HELP.md +target/ +.mvn/wrapper/maven-wrapper.jar +!**/src/main/**/target/ +!**/src/test/**/target/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ +build/ +!**/src/main/**/build/ +!**/src/test/**/build/ + +### VS Code ### +.vscode/ diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties new file mode 100644 index 0000000000..8dea6c227c --- /dev/null +++ b/.mvn/wrapper/maven-wrapper.properties @@ -0,0 +1,3 @@ +wrapperVersion=3.3.4 +distributionType=only-script +distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.12/apache-maven-3.9.12-bin.zip diff --git a/README.md b/README.md index b067a71026..24ef768957 100644 --- a/README.md +++ b/README.md @@ -1,82 +1,225 @@ -# Yape Code Challenge :rocket: +# Reto Técnico - Sistema de Transacciones con Validación Anti-Fraude -Our code challenge will let you marvel us with your Jedi coding skills :smile:. +Sistema de microservicios que gestiona transacciones financieras con validación anti-fraude asíncrona mediante Kafka, implementado con arquitectura hexagonal y patrón CQRS. -Don't forget that the proper way to submit your work is to fork the repo and create a PR :wink: ... have fun !! +## Tecnologías -- [Problem](#problem) -- [Tech Stack](#tech_stack) -- [Send us your challenge](#send_us_your_challenge) +| Tecnología | Uso | +|---|---| +| Java 21 | Lenguaje | +| Spring Boot 3.4.2 | Framework | +| PostgreSQL 16 | Base de datos (modelo de escritura) | +| Redis 7 | Cache (modelo de lectura - CQRS) | +| Apache Kafka | Mensajería entre microservicios | +| Docker Compose | Infraestructura local | +| Maven Multi-Módulo | Gestión del proyecto | +| Arquitectura Hexagonal | Separación de responsabilidades | -# Problem +## Estructura del Proyecto -Every time a financial transaction is created it must be validated by our anti-fraud microservice and then the same service sends a message back to update the transaction status. -For now, we have only three transaction statuses: +``` +reto-tecnico/ +├── pom.xml (POM padre) +├── docker-compose.yml (PostgreSQL + Redis + Kafka + Zookeeper) +├── common/ (Módulo compartido - eventos Kafka) +├── transaction-service/ (Microservicio de transacciones - puerto 8080) +└── anti-fraud-service/ (Microservicio anti-fraude - puerto 8081) +``` + +## Requisitos Previos + +- Java 21 +- Maven 3.9+ +- Docker Desktop + +## Despliegue + +### 1. Levantar infraestructura con Docker + +```bash +docker-compose up -d +``` + +Esto levanta: +- **PostgreSQL** en `localhost:5432` (base de datos `transactions_db`) +- **Redis** en `localhost:6379` +- **Kafka** en `localhost:9092` +- **Zookeeper** en `localhost:2181` + +Verificar que todo esté corriendo: + +```bash +docker-compose ps +``` + +### 2. Compilar el proyecto + +```bash +./mvnw clean install -DskipTests +``` -
    -
  1. pending
    2. -
  2. approved
    3. -
  3. rejected
    4. -
+### 3. Levantar los microservicios -Every transaction with a value greater than 1000 should be rejected. +En una terminal, levantar el servicio de transacciones: -```mermaid - flowchart LR - Transaction -- Save Transaction with pending Status --> transactionDatabase[(Database)] - Transaction --Send transaction Created event--> Anti-Fraud - Anti-Fraud -- Send transaction Status Approved event--> Transaction - Anti-Fraud -- Send transaction Status Rejected event--> Transaction - Transaction -- Update transaction Status event--> transactionDatabase[(Database)] +```bash +./mvnw -pl transaction-service spring-boot:run ``` -# Tech Stack +En otra terminal, levantar el servicio anti-fraude: -
    -
  1. Node. You can use any framework you want (i.e. Nestjs with an ORM like TypeOrm or Prisma)
    2. -
  2. Any database
    3. -
  3. Kafka
    4. -
+```bash +./mvnw -pl anti-fraud-service spring-boot:run +``` -We do provide a `Dockerfile` to help you get started with a dev environment. +### 4. Detener todo -You must have two resources: +```bash +# Detener microservicios: Ctrl+C en cada terminal -1. Resource to create a transaction that must containt: +# Detener infraestructura Docker +docker-compose down +``` + +--- + +## Endpoints + +### POST /api/transactions — Crear transacción + +**Request:** + +```bash +curl -X POST http://localhost:8080/api/transactions \ + -H "Content-Type: application/json" \ + -d '{ + "accountExternalIdDebit": "550e8400-e29b-41d4-a716-446655440000", + "accountExternalIdCredit": "6ba7b810-9dad-11d1-80b4-00c04fd430c8", + "tranferTypeId": 1, + "value": 120 + }' +``` + +**Response (201 Created):** ```json { - "accountExternalIdDebit": "Guid", - "accountExternalIdCredit": "Guid", - "tranferTypeId": 1, - "value": 120 + "transactionExternalId": "fb443c94-1206-4578-a953-c8a543bc666b", + "transactionType": { + "name": "Transfer" + }, + "transactionStatus": { + "name": "pending" + }, + "value": 120, + "createdAt": "2026-02-28T14:26:41.250" } ``` -2. Resource to retrieve a transaction +### GET /api/transactions/{transactionExternalId} — Consultar transacción + +**Request:** + +```bash +curl http://localhost:8080/api/transactions/fb443c94-1206-4578-a953-c8a543bc666b +``` + +**Response (200 OK):** ```json { - "transactionExternalId": "Guid", + "transactionExternalId": "fb443c94-1206-4578-a953-c8a543bc666b", "transactionType": { - "name": "" + "name": "Transfer" }, "transactionStatus": { - "name": "" + "name": "approved" }, "value": 120, - "createdAt": "Date" + "createdAt": "2026-02-28T14:26:41.250" } ``` -## Optional +> **Nota:** El estado cambia de `pending` a `approved` o `rejected` de forma asíncrona mediante Kafka tras la validación del servicio anti-fraude. -You can use any approach to store transaction data but you should consider that we may deal with high volume scenarios where we have a huge amount of writes and reads for the same data at the same time. How would you tackle this requirement? +--- -You can use Graphql; +## Regla de Negocio -# Send us your challenge +- Transacciones con `value <= 1000` → **approved** +- Transacciones con `value > 1000` → **rejected** + +--- + +## Flujo Completo + +``` +1. Cliente hace POST /api/transactions (value=120) + │ + ▼ +2. TransactionController recibe el request + │ + ▼ +3. CreateTransactionService orquesta: + ├── Transaction.create() → Crea entidad con status=PENDING + ├── JpaTransactionRepositoryAdapter → Guarda en PostgreSQL + ├── RedisTransactionCacheAdapter → Guarda en Redis (CQRS) + └── KafkaTransactionPublisher → Publica en topic "transaction-created" + │ + └── Respuesta al cliente: { status: "pending" } + + ⚡ KAFKA (automático) ⚡ + +4. Anti-Fraud Service: + ├── KafkaFraudConsumer ← Consume "transaction-created" + ├── FraudValidationService → Evalúa regla de negocio + ├── FraudValidation.validate() → 120 > 1000? NO → APPROVED + └── KafkaFraudResultPublisher → Publica en topic "transaction-status" + + ⚡ KAFKA (automático) ⚡ + +5. Transaction Service (de vuelta): + ├── KafkaTransactionStatusConsumer ← Consume "transaction-status" + └── UpdateTransactionStatusService + ├── PostgreSQL → UPDATE status = APPROVED + └── Redis → UPDATE status = APPROVED + +6. Cliente hace GET /api/transactions/{id} + │ + ▼ +7. GetTransactionService: + ├── Redis (cache hit?) → SÍ → Devuelve { status: "approved" } + └── PostgreSQL (si no está en cache) → Devuelve y repobla cache +``` + +## Arquitectura Hexagonal + +Cada microservicio sigue la estructura de puertos y adaptadores: + +``` +domain/ +├── model/ → Entidades de dominio (sin dependencias de frameworks) +└── port/ + ├── in/ → Puertos de entrada (casos de uso) + └── out/ → Puertos de salida (interfaces de persistencia, mensajería, cache) + +application/ +├── service/ → Implementación de los casos de uso +├── dto/ → Objetos de transferencia de datos +└── exception/ → Manejo global de errores + +infrastructure/ +├── adapter/ +│ ├── in/rest/ → Controladores REST +│ └── out/ +│ ├── persistence/ → Adaptador JPA (PostgreSQL) +│ ├── messaging/ → Adaptador Kafka (productor/consumidor) +│ └── cache/ → Adaptador Redis (CQRS) +└── config/ → Configuraciones (Kafka, Redis, Jackson) +``` -When you finish your challenge, after forking a repository, you **must** open a pull request to our repository. There are no limitations to the implementation, you can follow the programming paradigm, modularization, and style that you feel is the most appropriate solution. +## CQRS (Command Query Responsibility Segregation) -If you have any questions, please let us know. +- **Escritura (Command):** PostgreSQL es la fuente de verdad para todas las operaciones de escritura. +- **Lectura (Query):** Redis actúa como modelo de lectura optimizado. Las consultas GET buscan primero en Redis (~0.1ms) y solo van a PostgreSQL como fallback (~5ms). +- **Sincronización:** Cada vez que se escribe o actualiza una transacción en PostgreSQL, también se actualiza Redis. diff --git a/anti-fraud-service/pom.xml b/anti-fraud-service/pom.xml new file mode 100644 index 0000000000..d7d97322b1 --- /dev/null +++ b/anti-fraud-service/pom.xml @@ -0,0 +1,69 @@ + + + 4.0.0 + + + com.retotecnico + reto-tecnico + 0.0.1-SNAPSHOT + + + anti-fraud-service + anti-fraud-service + Anti-Fraud Microservice - Validates transactions + + + + + com.retotecnico + common + + + + + org.springframework.boot + spring-boot-starter + + + + + org.springframework.kafka + spring-kafka + + + + + org.springframework.boot + spring-boot-devtools + runtime + true + + + + + org.springframework.kafka + spring-kafka-test + test + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + org.projectlombok + lombok + + + + + + + + diff --git a/anti-fraud-service/src/main/java/com/retotecnico/antifraud/AntiFraudServiceApplication.java b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/AntiFraudServiceApplication.java new file mode 100644 index 0000000000..a07da34048 --- /dev/null +++ b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/AntiFraudServiceApplication.java @@ -0,0 +1,12 @@ +package com.retotecnico.antifraud; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class AntiFraudServiceApplication { + + public static void main(String[] args) { + SpringApplication.run(AntiFraudServiceApplication.class, args); + } +} diff --git a/anti-fraud-service/src/main/java/com/retotecnico/antifraud/application/service/FraudValidationService.java b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/application/service/FraudValidationService.java new file mode 100644 index 0000000000..ee477585f3 --- /dev/null +++ b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/application/service/FraudValidationService.java @@ -0,0 +1,36 @@ +package com.retotecnico.antifraud.application.service; + +import com.retotecnico.antifraud.domain.model.FraudValidation; +import com.retotecnico.antifraud.domain.port.in.ValidateTransactionUseCase; +import com.retotecnico.antifraud.domain.port.out.FraudResultPublisher; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.stereotype.Service; + +import java.math.BigDecimal; +import java.util.UUID; + +@Slf4j +@Service +@RequiredArgsConstructor +public class FraudValidationService implements ValidateTransactionUseCase { + + private final FraudResultPublisher fraudResultPublisher; + + @Override + public String execute(UUID transactionExternalId, BigDecimal value) { + // Apply domain business rule + FraudValidation validation = FraudValidation.validate(transactionExternalId, value); + + log.info("Fraud validation for transaction {}: value={}, result={}", + transactionExternalId, value, validation.getResultStatus()); + + // Publish result back via Kafka + fraudResultPublisher.publishResult( + validation.getTransactionExternalId(), + validation.getResultStatus() + ); + + return validation.getResultStatus(); + } +} diff --git a/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/model/FraudValidation.java b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/model/FraudValidation.java new file mode 100644 index 0000000000..71eb7dc24f --- /dev/null +++ b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/model/FraudValidation.java @@ -0,0 +1,38 @@ +package com.retotecnico.antifraud.domain.model; + +import lombok.AllArgsConstructor; +import lombok.Builder; +import lombok.Data; +import lombok.NoArgsConstructor; + +import java.math.BigDecimal; +import java.util.UUID; + +/** + * Domain model representing a fraud validation result. + */ +@Data +@Builder +@NoArgsConstructor +@AllArgsConstructor +public class FraudValidation { + + private static final BigDecimal MAX_ALLOWED_VALUE = new BigDecimal("1000"); + + private UUID transactionExternalId; + private BigDecimal transactionValue; + private String resultStatus; + + /** + * Core business rule: transactions > 1000 are rejected. + */ + public static FraudValidation validate(UUID transactionExternalId, BigDecimal value) { + String status = value.compareTo(MAX_ALLOWED_VALUE) > 0 ? "REJECTED" : "APPROVED"; + + return FraudValidation.builder() + .transactionExternalId(transactionExternalId) + .transactionValue(value) + .resultStatus(status) + .build(); + } +} diff --git a/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/port/in/ValidateTransactionUseCase.java b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/port/in/ValidateTransactionUseCase.java new file mode 100644 index 0000000000..c903e6f869 --- /dev/null +++ b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/port/in/ValidateTransactionUseCase.java @@ -0,0 +1,12 @@ +package com.retotecnico.antifraud.domain.port.in; + +import java.math.BigDecimal; +import java.util.UUID; + +/** + * Input port - use case for validating a transaction against fraud rules. + */ +public interface ValidateTransactionUseCase { + + String execute(UUID transactionExternalId, BigDecimal value); +} diff --git a/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/port/out/FraudResultPublisher.java b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/port/out/FraudResultPublisher.java new file mode 100644 index 0000000000..5288a828be --- /dev/null +++ b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/domain/port/out/FraudResultPublisher.java @@ -0,0 +1,11 @@ +package com.retotecnico.antifraud.domain.port.out; + +import java.util.UUID; + +/** + * Output port - publishes fraud validation result. + */ +public interface FraudResultPublisher { + + void publishResult(UUID transactionExternalId, String status); +} diff --git a/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/adapter/messaging/KafkaFraudConsumer.java b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/adapter/messaging/KafkaFraudConsumer.java new file mode 100644 index 0000000000..9e93f1d2e4 --- /dev/null +++ b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/adapter/messaging/KafkaFraudConsumer.java @@ -0,0 +1,34 @@ +package com.retotecnico.antifraud.infrastructure.adapter.messaging; + +import com.retotecnico.common.event.TransactionCreatedEvent; +import com.retotecnico.antifraud.domain.port.in.ValidateTransactionUseCase; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.kafka.annotation.KafkaListener; +import org.springframework.stereotype.Component; + +/** + * Kafka consumer - listens for transaction-created events. + */ +@Slf4j +@Component +@RequiredArgsConstructor +public class KafkaFraudConsumer { + + private final ValidateTransactionUseCase validateTransactionUseCase; + + @KafkaListener( + topics = "transaction-created", + groupId = "anti-fraud-service-group", + containerFactory = "createdKafkaListenerContainerFactory" + ) + public void onTransactionCreated(TransactionCreatedEvent event) { + log.info("Received transaction-created event: id={}, value={}", + event.getTransactionExternalId(), event.getValue()); + + validateTransactionUseCase.execute( + event.getTransactionExternalId(), + event.getValue() + ); + } +} diff --git a/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/adapter/messaging/KafkaFraudResultPublisher.java b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/adapter/messaging/KafkaFraudResultPublisher.java new file mode 100644 index 0000000000..6dccaf8975 --- /dev/null +++ b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/adapter/messaging/KafkaFraudResultPublisher.java @@ -0,0 +1,34 @@ +package com.retotecnico.antifraud.infrastructure.adapter.messaging; + +import com.retotecnico.common.event.TransactionStatusEvent; +import com.retotecnico.antifraud.domain.port.out.FraudResultPublisher; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.kafka.core.KafkaTemplate; +import org.springframework.stereotype.Component; + +import java.util.UUID; + +/** + * Kafka producer - publishes fraud validation results. + */ +@Slf4j +@Component +@RequiredArgsConstructor +public class KafkaFraudResultPublisher implements FraudResultPublisher { + + private static final String TOPIC = "transaction-status"; + + private final KafkaTemplate kafkaTemplate; + + @Override + public void publishResult(UUID transactionExternalId, String status) { + TransactionStatusEvent event = TransactionStatusEvent.builder() + .transactionExternalId(transactionExternalId) + .status(status) + .build(); + + kafkaTemplate.send(TOPIC, transactionExternalId.toString(), event); + log.info("Published transaction-status event: id={}, status={}", transactionExternalId, status); + } +} diff --git a/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/config/KafkaConfig.java b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/config/KafkaConfig.java new file mode 100644 index 0000000000..bcab596369 --- /dev/null +++ b/anti-fraud-service/src/main/java/com/retotecnico/antifraud/infrastructure/config/KafkaConfig.java @@ -0,0 +1,65 @@ +package com.retotecnico.antifraud.infrastructure.config; + +import com.retotecnico.common.event.TransactionCreatedEvent; +import com.retotecnico.common.event.TransactionStatusEvent; +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.clients.producer.ProducerConfig; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.apache.kafka.common.serialization.StringSerializer; +import org.springframework.beans.factory.annotation.Value; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory; +import org.springframework.kafka.core.*; +import org.springframework.kafka.support.serializer.JsonDeserializer; +import org.springframework.kafka.support.serializer.JsonSerializer; + +import java.util.HashMap; +import java.util.Map; + +@Configuration +public class KafkaConfig { + + @Value("${spring.kafka.bootstrap-servers}") + private String bootstrapServers; + + // ==================== CONSUMER (TransactionCreatedEvent) ==================== + + @Bean + public ConsumerFactory createdConsumerFactory() { + Map props = new HashMap<>(); + props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers); + props.put(ConsumerConfig.GROUP_ID_CONFIG, "anti-fraud-service-group"); + props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class); + props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, JsonDeserializer.class); + props.put(JsonDeserializer.TRUSTED_PACKAGES, "com.retotecnico.common.event"); + props.put(JsonDeserializer.VALUE_DEFAULT_TYPE, TransactionCreatedEvent.class.getName()); + props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); + return new DefaultKafkaConsumerFactory<>(props); + } + + @Bean + public ConcurrentKafkaListenerContainerFactory createdKafkaListenerContainerFactory() { + ConcurrentKafkaListenerContainerFactory factory = + new ConcurrentKafkaListenerContainerFactory<>(); + factory.setConsumerFactory(createdConsumerFactory()); + return factory; + } + + // ==================== PRODUCER (TransactionStatusEvent) ==================== + + @Bean + public ProducerFactory producerFactory() { + Map props = new HashMap<>(); + props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers); + props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class); + props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, JsonSerializer.class); + props.put(JsonSerializer.ADD_TYPE_INFO_HEADERS, false); + return new DefaultKafkaProducerFactory<>(props); + } + + @Bean + public KafkaTemplate kafkaTemplate() { + return new KafkaTemplate<>(producerFactory()); + } +} diff --git a/anti-fraud-service/src/main/resources/application.properties b/anti-fraud-service/src/main/resources/application.properties new file mode 100644 index 0000000000..ca456d30ab --- /dev/null +++ b/anti-fraud-service/src/main/resources/application.properties @@ -0,0 +1,9 @@ +# ==================== Server ==================== +server.port=8081 + +# ==================== Kafka ==================== +spring.kafka.bootstrap-servers=localhost:9092 + +# ==================== Logging ==================== +logging.level.com.retotecnico=DEBUG +logging.level.org.springframework.kafka=INFO diff --git a/anti-fraud-service/src/test/java/com/retotecnico/antifraud/AntiFraudServiceApplicationTests.java b/anti-fraud-service/src/test/java/com/retotecnico/antifraud/AntiFraudServiceApplicationTests.java new file mode 100644 index 0000000000..f8c13d3421 --- /dev/null +++ b/anti-fraud-service/src/test/java/com/retotecnico/antifraud/AntiFraudServiceApplicationTests.java @@ -0,0 +1,14 @@ +package com.retotecnico.antifraud; + +import org.junit.jupiter.api.Test; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.ActiveProfiles; + +@SpringBootTest +@ActiveProfiles("test") +class AntiFraudServiceApplicationTests { + + @Test + void contextLoads() { + } +} diff --git a/anti-fraud-service/src/test/java/com/retotecnico/antifraud/domain/model/FraudValidationTest.java b/anti-fraud-service/src/test/java/com/retotecnico/antifraud/domain/model/FraudValidationTest.java new file mode 100644 index 0000000000..b1556b5bac --- /dev/null +++ b/anti-fraud-service/src/test/java/com/retotecnico/antifraud/domain/model/FraudValidationTest.java @@ -0,0 +1,39 @@ +package com.retotecnico.antifraud.domain.model; + +import org.junit.jupiter.api.Test; + +import java.math.BigDecimal; +import java.util.UUID; + +import static org.junit.jupiter.api.Assertions.assertEquals; + +class FraudValidationTest { + + @Test + void shouldApproveTransactionUnder1000() { + UUID id = UUID.randomUUID(); + FraudValidation result = FraudValidation.validate(id, new BigDecimal("500")); + assertEquals("APPROVED", result.getResultStatus()); + } + + @Test + void shouldApproveTransactionExactly1000() { + UUID id = UUID.randomUUID(); + FraudValidation result = FraudValidation.validate(id, new BigDecimal("1000")); + assertEquals("APPROVED", result.getResultStatus()); + } + + @Test + void shouldRejectTransactionOver1000() { + UUID id = UUID.randomUUID(); + FraudValidation result = FraudValidation.validate(id, new BigDecimal("1001")); + assertEquals("REJECTED", result.getResultStatus()); + } + + @Test + void shouldRejectTransactionWayOver1000() { + UUID id = UUID.randomUUID(); + FraudValidation result = FraudValidation.validate(id, new BigDecimal("50000")); + assertEquals("REJECTED", result.getResultStatus()); + } +} diff --git a/anti-fraud-service/src/test/resources/application-test.properties b/anti-fraud-service/src/test/resources/application-test.properties new file mode 100644 index 0000000000..ea9117d7eb --- /dev/null +++ b/anti-fraud-service/src/test/resources/application-test.properties @@ -0,0 +1,3 @@ +# ==================== Test Profile ==================== +spring.kafka.bootstrap-servers=localhost:9092 +spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration diff --git a/common/pom.xml b/common/pom.xml new file mode 100644 index 0000000000..9f65dca5e3 --- /dev/null +++ b/common/pom.xml @@ -0,0 +1,24 @@ + + + 4.0.0 + + + com.retotecnico + reto-tecnico + 0.0.1-SNAPSHOT + + + common + common + Shared events and DTOs between microservices + + + + com.fasterxml.jackson.core + jackson-databind + + + + diff --git a/common/src/main/java/com/retotecnico/common/event/TransactionCreatedEvent.java b/common/src/main/java/com/retotecnico/common/event/TransactionCreatedEvent.java new file mode 100644 index 0000000000..0d3fa854d9 --- /dev/null +++ b/common/src/main/java/com/retotecnico/common/event/TransactionCreatedEvent.java @@ -0,0 +1,22 @@ +package com.retotecnico.common.event; + +import lombok.AllArgsConstructor; +import lombok.Builder; +import lombok.Data; +import lombok.NoArgsConstructor; + +import java.math.BigDecimal; +import java.util.UUID; + +@Data +@Builder +@NoArgsConstructor +@AllArgsConstructor +public class TransactionCreatedEvent { + + private UUID transactionExternalId; + private UUID accountExternalIdDebit; + private UUID accountExternalIdCredit; + private int transferTypeId; + private BigDecimal value; +} diff --git a/common/src/main/java/com/retotecnico/common/event/TransactionStatusEvent.java b/common/src/main/java/com/retotecnico/common/event/TransactionStatusEvent.java new file mode 100644 index 0000000000..3a401df5ae --- /dev/null +++ b/common/src/main/java/com/retotecnico/common/event/TransactionStatusEvent.java @@ -0,0 +1,18 @@ +package com.retotecnico.common.event; + +import lombok.AllArgsConstructor; +import lombok.Builder; +import lombok.Data; +import lombok.NoArgsConstructor; + +import java.util.UUID; + +@Data +@Builder +@NoArgsConstructor +@AllArgsConstructor +public class TransactionStatusEvent { + + private UUID transactionExternalId; + private String status; // APPROVED or REJECTED +} diff --git a/docker-compose.yml b/docker-compose.yml index 0e8807f21c..3629bb6cc9 100644 --- a/docker-compose.yml +++ b/docker-compose.yml @@ -1,25 +1,71 @@ -version: "3.7" +version: "3.8" services: + + # ==================== PostgreSQL (Write Model) ==================== postgres: - image: postgres:14 + image: postgres:16-alpine + container_name: reto-postgres ports: - "5432:5432" environment: - - POSTGRES_USER=postgres - - POSTGRES_PASSWORD=postgres + POSTGRES_DB: transactions_db + POSTGRES_USER: postgres + POSTGRES_PASSWORD: postgres + volumes: + - postgres_data:/var/lib/postgresql/data + healthcheck: + test: ["CMD-SHELL", "pg_isready -U postgres"] + interval: 10s + timeout: 5s + retries: 5 + + # ==================== Redis (Read Model - CQRS) ==================== + redis: + image: redis:7-alpine + container_name: reto-redis + ports: + - "6379:6379" + healthcheck: + test: ["CMD", "redis-cli", "ping"] + interval: 10s + timeout: 5s + retries: 5 + + # ==================== Zookeeper (Kafka dependency) ==================== zookeeper: - image: confluentinc/cp-zookeeper:5.5.3 + image: confluentinc/cp-zookeeper:7.5.3 + container_name: reto-zookeeper environment: ZOOKEEPER_CLIENT_PORT: 2181 + ZOOKEEPER_TICK_TIME: 2000 + healthcheck: + test: ["CMD", "nc", "-z", "localhost", "2181"] + interval: 10s + timeout: 5s + retries: 5 + + # ==================== Kafka (Messaging) ==================== kafka: - image: confluentinc/cp-enterprise-kafka:5.5.3 - depends_on: [zookeeper] + image: confluentinc/cp-kafka:7.5.3 + container_name: reto-kafka + depends_on: + zookeeper: + condition: service_healthy + ports: + - "9092:9092" environment: - KAFKA_ZOOKEEPER_CONNECT: "zookeeper:2181" + KAFKA_BROKER_ID: 1 + KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181 KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:29092,PLAINTEXT_HOST://localhost:9092 KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT - KAFKA_BROKER_ID: 1 + KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1 - KAFKA_JMX_PORT: 9991 - ports: - - 9092:9092 + KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true" + healthcheck: + test: ["CMD", "kafka-topics", "--bootstrap-server", "localhost:9092", "--list"] + interval: 15s + timeout: 10s + retries: 10 + +volumes: + postgres_data: diff --git a/mvnw b/mvnw new file mode 100755 index 0000000000..bd8896bf22 --- /dev/null +++ b/mvnw @@ -0,0 +1,295 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Apache Maven Wrapper startup batch script, version 3.3.4 +# +# Optional ENV vars +# ----------------- +# JAVA_HOME - location of a JDK home dir, required when download maven via java source +# MVNW_REPOURL - repo url base for downloading maven distribution +# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven +# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output +# ---------------------------------------------------------------------------- + +set -euf +[ "${MVNW_VERBOSE-}" != debug ] || set -x + +# OS specific support. +native_path() { printf %s\\n "$1"; } +case "$(uname)" in +CYGWIN* | MINGW*) + [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")" + native_path() { cygpath --path --windows "$1"; } + ;; +esac + +# set JAVACMD and JAVACCMD +set_java_home() { + # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched + if [ -n "${JAVA_HOME-}" ]; then + if [ -x "$JAVA_HOME/jre/sh/java" ]; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD="$JAVA_HOME/jre/sh/java" + JAVACCMD="$JAVA_HOME/jre/sh/javac" + else + JAVACMD="$JAVA_HOME/bin/java" + JAVACCMD="$JAVA_HOME/bin/javac" + + if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then + echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2 + echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2 + return 1 + fi + fi + else + JAVACMD="$( + 'set' +e + 'unset' -f command 2>/dev/null + 'command' -v java + )" || : + JAVACCMD="$( + 'set' +e + 'unset' -f command 2>/dev/null + 'command' -v javac + )" || : + + if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then + echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2 + return 1 + fi + fi +} + +# hash string like Java String::hashCode +hash_string() { + str="${1:-}" h=0 + while [ -n "$str" ]; do + char="${str%"${str#?}"}" + h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296)) + str="${str#?}" + done + printf %x\\n $h +} + +verbose() { :; } +[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; } + +die() { + printf %s\\n "$1" >&2 + exit 1 +} + +trim() { + # MWRAPPER-139: + # Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds. + # Needed for removing poorly interpreted newline sequences when running in more + # exotic environments such as mingw bash on Windows. + printf "%s" "${1}" | tr -d '[:space:]' +} + +scriptDir="$(dirname "$0")" +scriptName="$(basename "$0")" + +# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties +while IFS="=" read -r key value; do + case "${key-}" in + distributionUrl) distributionUrl=$(trim "${value-}") ;; + distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;; + esac +done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties" +[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties" + +case "${distributionUrl##*/}" in +maven-mvnd-*bin.*) + MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ + case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in + *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;; + :Darwin*x86_64) distributionPlatform=darwin-amd64 ;; + :Darwin*arm64) distributionPlatform=darwin-aarch64 ;; + :Linux*x86_64*) distributionPlatform=linux-amd64 ;; + *) + echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2 + distributionPlatform=linux-amd64 + ;; + esac + distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip" + ;; +maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;; +*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;; +esac + +# apply MVNW_REPOURL and calculate MAVEN_HOME +# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/ +[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}" +distributionUrlName="${distributionUrl##*/}" +distributionUrlNameMain="${distributionUrlName%.*}" +distributionUrlNameMain="${distributionUrlNameMain%-bin}" +MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}" +MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")" + +exec_maven() { + unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || : + exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD" +} + +if [ -d "$MAVEN_HOME" ]; then + verbose "found existing MAVEN_HOME at $MAVEN_HOME" + exec_maven "$@" +fi + +case "${distributionUrl-}" in +*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;; +*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;; +esac + +# prepare tmp dir +if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then + clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; } + trap clean HUP INT TERM EXIT +else + die "cannot create temp dir" +fi + +mkdir -p -- "${MAVEN_HOME%/*}" + +# Download and Install Apache Maven +verbose "Couldn't find MAVEN_HOME, downloading and installing it ..." +verbose "Downloading from: $distributionUrl" +verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName" + +# select .zip or .tar.gz +if ! command -v unzip >/dev/null; then + distributionUrl="${distributionUrl%.zip}.tar.gz" + distributionUrlName="${distributionUrl##*/}" +fi + +# verbose opt +__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR='' +[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v + +# normalize http auth +case "${MVNW_PASSWORD:+has-password}" in +'') MVNW_USERNAME='' MVNW_PASSWORD='' ;; +has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;; +esac + +if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then + verbose "Found wget ... using wget" + wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl" +elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then + verbose "Found curl ... using curl" + curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl" +elif set_java_home; then + verbose "Falling back to use Java to download" + javaSource="$TMP_DOWNLOAD_DIR/Downloader.java" + targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName" + cat >"$javaSource" <<-END + public class Downloader extends java.net.Authenticator + { + protected java.net.PasswordAuthentication getPasswordAuthentication() + { + return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() ); + } + public static void main( String[] args ) throws Exception + { + setDefault( new Downloader() ); + java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() ); + } + } + END + # For Cygwin/MinGW, switch paths to Windows format before running javac and java + verbose " - Compiling Downloader.java ..." + "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java" + verbose " - Running Downloader.java ..." + "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")" +fi + +# If specified, validate the SHA-256 sum of the Maven distribution zip file +if [ -n "${distributionSha256Sum-}" ]; then + distributionSha256Result=false + if [ "$MVN_CMD" = mvnd.sh ]; then + echo "Checksum validation is not supported for maven-mvnd." >&2 + echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2 + exit 1 + elif command -v sha256sum >/dev/null; then + if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then + distributionSha256Result=true + fi + elif command -v shasum >/dev/null; then + if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then + distributionSha256Result=true + fi + else + echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2 + echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2 + exit 1 + fi + if [ $distributionSha256Result = false ]; then + echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2 + echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2 + exit 1 + fi +fi + +# unzip and move +if command -v unzip >/dev/null; then + unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip" +else + tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar" +fi + +# Find the actual extracted directory name (handles snapshots where filename != directory name) +actualDistributionDir="" + +# First try the expected directory name (for regular distributions) +if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then + if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then + actualDistributionDir="$distributionUrlNameMain" + fi +fi + +# If not found, search for any directory with the Maven executable (for snapshots) +if [ -z "$actualDistributionDir" ]; then + # enable globbing to iterate over items + set +f + for dir in "$TMP_DOWNLOAD_DIR"/*; do + if [ -d "$dir" ]; then + if [ -f "$dir/bin/$MVN_CMD" ]; then + actualDistributionDir="$(basename "$dir")" + break + fi + fi + done + set -f +fi + +if [ -z "$actualDistributionDir" ]; then + verbose "Contents of $TMP_DOWNLOAD_DIR:" + verbose "$(ls -la "$TMP_DOWNLOAD_DIR")" + die "Could not find Maven distribution directory in extracted archive" +fi + +verbose "Found extracted Maven distribution directory: $actualDistributionDir" +printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url" +mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME" + +clean || : +exec_maven "$@" diff --git a/mvnw.cmd b/mvnw.cmd new file mode 100644 index 0000000000..92450f9327 --- /dev/null +++ b/mvnw.cmd @@ -0,0 +1,189 @@ +<# : batch portion +@REM ---------------------------------------------------------------------------- +@REM Licensed to the Apache Software Foundation (ASF) under one +@REM or more contributor license agreements. See the NOTICE file +@REM distributed with this work for additional information +@REM regarding copyright ownership. The ASF licenses this file +@REM to you under the Apache License, Version 2.0 (the +@REM "License"); you may not use this file except in compliance +@REM with the License. You may obtain a copy of the License at +@REM +@REM http://www.apache.org/licenses/LICENSE-2.0 +@REM +@REM Unless required by applicable law or agreed to in writing, +@REM software distributed under the License is distributed on an +@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +@REM KIND, either express or implied. See the License for the +@REM specific language governing permissions and limitations +@REM under the License. +@REM ---------------------------------------------------------------------------- + +@REM ---------------------------------------------------------------------------- +@REM Apache Maven Wrapper startup batch script, version 3.3.4 +@REM +@REM Optional ENV vars +@REM MVNW_REPOURL - repo url base for downloading maven distribution +@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven +@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output +@REM ---------------------------------------------------------------------------- + +@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0) +@SET __MVNW_CMD__= +@SET __MVNW_ERROR__= +@SET __MVNW_PSMODULEP_SAVE=%PSModulePath% +@SET PSModulePath= +@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @( + IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B) +) +@SET PSModulePath=%__MVNW_PSMODULEP_SAVE% +@SET __MVNW_PSMODULEP_SAVE= +@SET __MVNW_ARG0_NAME__= +@SET MVNW_USERNAME= +@SET MVNW_PASSWORD= +@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*) +@echo Cannot start maven from wrapper >&2 && exit /b 1 +@GOTO :EOF +: end batch / begin powershell #> + +$ErrorActionPreference = "Stop" +if ($env:MVNW_VERBOSE -eq "true") { + $VerbosePreference = "Continue" +} + +# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties +$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl +if (!$distributionUrl) { + Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties" +} + +switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) { + "maven-mvnd-*" { + $USE_MVND = $true + $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip" + $MVN_CMD = "mvnd.cmd" + break + } + default { + $USE_MVND = $false + $MVN_CMD = $script -replace '^mvnw','mvn' + break + } +} + +# apply MVNW_REPOURL and calculate MAVEN_HOME +# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/ +if ($env:MVNW_REPOURL) { + $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" } + $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')" +} +$distributionUrlName = $distributionUrl -replace '^.*/','' +$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$','' + +$MAVEN_M2_PATH = "$HOME/.m2" +if ($env:MAVEN_USER_HOME) { + $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME" +} + +if (-not (Test-Path -Path $MAVEN_M2_PATH)) { + New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null +} + +$MAVEN_WRAPPER_DISTS = $null +if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) { + $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists" +} else { + $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists" +} + +$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain" +$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join '' +$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME" + +if (Test-Path -Path "$MAVEN_HOME" -PathType Container) { + Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME" + Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD" + exit $? +} + +if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) { + Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl" +} + +# prepare tmp dir +$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile +$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir" +$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null +trap { + if ($TMP_DOWNLOAD_DIR.Exists) { + try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null } + catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" } + } +} + +New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null + +# Download and Install Apache Maven +Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..." +Write-Verbose "Downloading from: $distributionUrl" +Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName" + +$webclient = New-Object System.Net.WebClient +if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) { + $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD) +} +[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 +$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null + +# If specified, validate the SHA-256 sum of the Maven distribution zip file +$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum +if ($distributionSha256Sum) { + if ($USE_MVND) { + Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." + } + Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash + if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) { + Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property." + } +} + +# unzip and move +Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null + +# Find the actual extracted directory name (handles snapshots where filename != directory name) +$actualDistributionDir = "" + +# First try the expected directory name (for regular distributions) +$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain" +$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD" +if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) { + $actualDistributionDir = $distributionUrlNameMain +} + +# If not found, search for any directory with the Maven executable (for snapshots) +if (!$actualDistributionDir) { + Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object { + $testPath = Join-Path $_.FullName "bin/$MVN_CMD" + if (Test-Path -Path $testPath -PathType Leaf) { + $actualDistributionDir = $_.Name + } + } +} + +if (!$actualDistributionDir) { + Write-Error "Could not find Maven distribution directory in extracted archive" +} + +Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir" +Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null +try { + Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null +} catch { + if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) { + Write-Error "fail to move MAVEN_HOME" + } +} finally { + try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null } + catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" } +} + +Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD" diff --git a/pom.xml b/pom.xml new file mode 100644 index 0000000000..d60f6f99a2 --- /dev/null +++ b/pom.xml @@ -0,0 +1,77 @@ + + + 4.0.0 + + + org.springframework.boot + spring-boot-starter-parent + 3.4.2 + + + + com.retotecnico + reto-tecnico + 0.0.1-SNAPSHOT + pom + reto-tecnico + Yape Code Challenge - Transaction & Anti-Fraud Microservices + + + common + transaction-service + anti-fraud-service + + + + 21 + 21 + 21 + UTF-8 + + + + + + com.retotecnico + common + ${project.version} + + + + + + + + org.projectlombok + lombok + true + + + + org.springframework.boot + spring-boot-starter-test + test + + + + + + + org.apache.maven.plugins + maven-compiler-plugin + + 21 + 21 + + + org.projectlombok + lombok + + + + + + + + diff --git a/transaction-service/pom.xml b/transaction-service/pom.xml new file mode 100644 index 0000000000..6ef2493618 --- /dev/null +++ b/transaction-service/pom.xml @@ -0,0 +1,94 @@ + + + 4.0.0 + + + com.retotecnico + reto-tecnico + 0.0.1-SNAPSHOT + + + transaction-service + transaction-service + Transaction Microservice - Hexagonal Architecture + + + + + com.retotecnico + common + + + + + org.springframework.boot + spring-boot-starter-web + + + + + org.springframework.boot + spring-boot-starter-data-jpa + + + + + org.postgresql + postgresql + runtime + + + + + org.springframework.kafka + spring-kafka + + + + + org.springframework.boot + spring-boot-starter-data-redis + + + + + org.springframework.boot + spring-boot-starter-validation + + + + + org.springframework.boot + spring-boot-devtools + runtime + true + + + + + org.springframework.kafka + spring-kafka-test + test + + + + + + + org.springframework.boot + spring-boot-maven-plugin + + + + org.projectlombok + lombok + + + + + + + + diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/TransactionServiceApplication.java b/transaction-service/src/main/java/com/retotecnico/transaction/TransactionServiceApplication.java new file mode 100644 index 0000000000..8352eacadf --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/TransactionServiceApplication.java @@ -0,0 +1,12 @@ +package com.retotecnico.transaction; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class TransactionServiceApplication { + + public static void main(String[] args) { + SpringApplication.run(TransactionServiceApplication.class, args); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/application/dto/CreateTransactionRequest.java b/transaction-service/src/main/java/com/retotecnico/transaction/application/dto/CreateTransactionRequest.java new file mode 100644 index 0000000000..8214a9cd14 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/application/dto/CreateTransactionRequest.java @@ -0,0 +1,29 @@ +package com.retotecnico.transaction.application.dto; + +import jakarta.validation.constraints.NotNull; +import jakarta.validation.constraints.Positive; +import lombok.AllArgsConstructor; +import lombok.Data; +import lombok.NoArgsConstructor; + +import java.math.BigDecimal; +import java.util.UUID; + +@Data +@NoArgsConstructor +@AllArgsConstructor +public class CreateTransactionRequest { + + @NotNull(message = "accountExternalIdDebit is required") + private UUID accountExternalIdDebit; + + @NotNull(message = "accountExternalIdCredit is required") + private UUID accountExternalIdCredit; + + @Positive(message = "tranferTypeId must be positive") + private int tranferTypeId; + + @NotNull(message = "value is required") + @Positive(message = "value must be positive") + private BigDecimal value; +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/application/dto/TransactionResponse.java b/transaction-service/src/main/java/com/retotecnico/transaction/application/dto/TransactionResponse.java new file mode 100644 index 0000000000..6365a74860 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/application/dto/TransactionResponse.java @@ -0,0 +1,55 @@ +package com.retotecnico.transaction.application.dto; + +import com.retotecnico.transaction.domain.model.Transaction; +import lombok.AllArgsConstructor; +import lombok.Builder; +import lombok.Data; +import lombok.NoArgsConstructor; + +import java.io.Serializable; +import java.math.BigDecimal; +import java.time.LocalDateTime; +import java.util.UUID; + +@Data +@Builder +@NoArgsConstructor +@AllArgsConstructor +public class TransactionResponse implements Serializable { + + private UUID transactionExternalId; + private TransactionTypeDto transactionType; + private TransactionStatusDto transactionStatus; + private BigDecimal value; + private LocalDateTime createdAt; + + @Data + @Builder + @NoArgsConstructor + @AllArgsConstructor + public static class TransactionTypeDto implements Serializable { + private String name; + } + + @Data + @Builder + @NoArgsConstructor + @AllArgsConstructor + public static class TransactionStatusDto implements Serializable { + private String name; + } + + public static TransactionResponse fromDomain(Transaction transaction) { + return TransactionResponse.builder() + .transactionExternalId(transaction.getTransactionExternalId()) + .transactionType(TransactionTypeDto.builder() + .name(transaction.getTransferType().getName()) + .build()) + .transactionStatus(TransactionStatusDto.builder() + .name(transaction.getStatus().name().toLowerCase()) + .build()) + .value(transaction.getValue()) + .createdAt(transaction.getCreatedAt()) + .build(); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/application/exception/GlobalExceptionHandler.java b/transaction-service/src/main/java/com/retotecnico/transaction/application/exception/GlobalExceptionHandler.java new file mode 100644 index 0000000000..9e6a401dac --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/application/exception/GlobalExceptionHandler.java @@ -0,0 +1,47 @@ +package com.retotecnico.transaction.application.exception; + +import org.springframework.http.HttpStatus; +import org.springframework.http.ResponseEntity; +import org.springframework.web.bind.MethodArgumentNotValidException; +import org.springframework.web.bind.annotation.ExceptionHandler; +import org.springframework.web.bind.annotation.RestControllerAdvice; + +import java.time.LocalDateTime; +import java.util.HashMap; +import java.util.Map; + +@RestControllerAdvice +public class GlobalExceptionHandler { + + @ExceptionHandler(RuntimeException.class) + public ResponseEntity> handleRuntimeException(RuntimeException ex) { + Map body = new HashMap<>(); + body.put("timestamp", LocalDateTime.now()); + body.put("error", ex.getMessage()); + body.put("status", HttpStatus.NOT_FOUND.value()); + return ResponseEntity.status(HttpStatus.NOT_FOUND).body(body); + } + + @ExceptionHandler(IllegalArgumentException.class) + public ResponseEntity> handleIllegalArgument(IllegalArgumentException ex) { + Map body = new HashMap<>(); + body.put("timestamp", LocalDateTime.now()); + body.put("error", ex.getMessage()); + body.put("status", HttpStatus.BAD_REQUEST.value()); + return ResponseEntity.badRequest().body(body); + } + + @ExceptionHandler(MethodArgumentNotValidException.class) + public ResponseEntity> handleValidation(MethodArgumentNotValidException ex) { + Map body = new HashMap<>(); + body.put("timestamp", LocalDateTime.now()); + body.put("status", HttpStatus.BAD_REQUEST.value()); + + Map errors = new HashMap<>(); + ex.getBindingResult().getFieldErrors() + .forEach(error -> errors.put(error.getField(), error.getDefaultMessage())); + body.put("errors", errors); + + return ResponseEntity.badRequest().body(body); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/application/service/CreateTransactionService.java b/transaction-service/src/main/java/com/retotecnico/transaction/application/service/CreateTransactionService.java new file mode 100644 index 0000000000..244c36e590 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/application/service/CreateTransactionService.java @@ -0,0 +1,54 @@ +package com.retotecnico.transaction.application.service; + +import com.retotecnico.transaction.domain.model.Transaction; +import com.retotecnico.transaction.domain.port.in.CreateTransactionUseCase; +import com.retotecnico.transaction.domain.port.out.TransactionCacheRepository; +import com.retotecnico.transaction.domain.port.out.TransactionEventPublisher; +import com.retotecnico.transaction.domain.port.out.TransactionRepository; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.stereotype.Service; +import org.springframework.transaction.annotation.Transactional; + +import java.math.BigDecimal; +import java.util.UUID; + +@Slf4j +@Service +@RequiredArgsConstructor +public class CreateTransactionService implements CreateTransactionUseCase { + + private final TransactionRepository transactionRepository; + private final TransactionEventPublisher transactionEventPublisher; + private final TransactionCacheRepository transactionCacheRepository; + + @Override + @Transactional + public Transaction execute(UUID accountExternalIdDebit, + UUID accountExternalIdCredit, + int transferTypeId, + BigDecimal value) { + + // 1. Create domain entity with PENDING status + Transaction transaction = Transaction.create( + accountExternalIdDebit, + accountExternalIdCredit, + transferTypeId, + value + ); + + // 2. Save to PostgreSQL (Write model) + Transaction saved = transactionRepository.save(transaction); + log.info("Transaction saved with id: {} and status: {}", + saved.getTransactionExternalId(), saved.getStatus()); + + // 3. Save to Redis (Read model - CQRS) + transactionCacheRepository.save(saved); + + // 4. Publish event to Kafka for Anti-Fraud validation + transactionEventPublisher.publishTransactionCreated(saved); + log.info("Transaction event published for id: {}", saved.getTransactionExternalId()); + + return saved; + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/application/service/GetTransactionService.java b/transaction-service/src/main/java/com/retotecnico/transaction/application/service/GetTransactionService.java new file mode 100644 index 0000000000..1d31e5a3fb --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/application/service/GetTransactionService.java @@ -0,0 +1,36 @@ +package com.retotecnico.transaction.application.service; + +import com.retotecnico.transaction.domain.model.Transaction; +import com.retotecnico.transaction.domain.port.in.GetTransactionUseCase; +import com.retotecnico.transaction.domain.port.out.TransactionCacheRepository; +import com.retotecnico.transaction.domain.port.out.TransactionRepository; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.stereotype.Service; + +import java.util.UUID; + +@Slf4j +@Service +@RequiredArgsConstructor +public class GetTransactionService implements GetTransactionUseCase { + + private final TransactionRepository transactionRepository; + private final TransactionCacheRepository transactionCacheRepository; + + @Override + public Transaction execute(UUID transactionExternalId) { + // CQRS: First try Redis (Read model), then fallback to PostgreSQL (Write model) + return transactionCacheRepository.findById(transactionExternalId) + .orElseGet(() -> { + log.info("Cache miss for transaction: {}, fetching from database", transactionExternalId); + Transaction transaction = transactionRepository.findById(transactionExternalId) + .orElseThrow(() -> new RuntimeException( + "Transaction not found: " + transactionExternalId)); + + // Repopulate cache + transactionCacheRepository.save(transaction); + return transaction; + }); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/application/service/UpdateTransactionStatusService.java b/transaction-service/src/main/java/com/retotecnico/transaction/application/service/UpdateTransactionStatusService.java new file mode 100644 index 0000000000..c274543946 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/application/service/UpdateTransactionStatusService.java @@ -0,0 +1,45 @@ +package com.retotecnico.transaction.application.service; + +import com.retotecnico.transaction.domain.model.Transaction; +import com.retotecnico.transaction.domain.model.TransactionStatus; +import com.retotecnico.transaction.domain.port.in.UpdateTransactionStatusUseCase; +import com.retotecnico.transaction.domain.port.out.TransactionCacheRepository; +import com.retotecnico.transaction.domain.port.out.TransactionRepository; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.stereotype.Service; +import org.springframework.transaction.annotation.Transactional; + +import java.util.UUID; + +@Slf4j +@Service +@RequiredArgsConstructor +public class UpdateTransactionStatusService implements UpdateTransactionStatusUseCase { + + private final TransactionRepository transactionRepository; + private final TransactionCacheRepository transactionCacheRepository; + + @Override + @Transactional + public void execute(UUID transactionExternalId, String status) { + Transaction transaction = transactionRepository.findById(transactionExternalId) + .orElseThrow(() -> new RuntimeException( + "Transaction not found: " + transactionExternalId)); + + // Update domain entity status + TransactionStatus newStatus = TransactionStatus.valueOf(status.toUpperCase()); + if (newStatus == TransactionStatus.APPROVED) { + transaction.approve(); + } else if (newStatus == TransactionStatus.REJECTED) { + transaction.reject(); + } + + // Update in PostgreSQL (Write model) + transactionRepository.save(transaction); + log.info("Transaction {} status updated to {}", transactionExternalId, status); + + // Update in Redis (Read model - CQRS) + transactionCacheRepository.save(transaction); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/Transaction.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/Transaction.java new file mode 100644 index 0000000000..9db4410947 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/Transaction.java @@ -0,0 +1,54 @@ +package com.retotecnico.transaction.domain.model; + +import lombok.AllArgsConstructor; +import lombok.Builder; +import lombok.Data; +import lombok.NoArgsConstructor; + +import java.math.BigDecimal; +import java.time.LocalDateTime; +import java.util.UUID; + +/** + * Entidad de dominio - objeto de negocio puro, sin dependencias de frameworks. + */ +@Data +@Builder +@NoArgsConstructor +@AllArgsConstructor +public class Transaction { + + private UUID transactionExternalId; + private UUID accountExternalIdDebit; + private UUID accountExternalIdCredit; + private TransferType transferType; + private BigDecimal value; + private TransactionStatus status; + private LocalDateTime createdAt; + + /** + * Metodo de fabrica para crear una nueva transaccion con estado pendiente. + */ + public static Transaction create(UUID accountExternalIdDebit, + UUID accountExternalIdCredit, + int transferTypeId, + BigDecimal value) { + return Transaction.builder() + .transactionExternalId(UUID.randomUUID()) + .accountExternalIdDebit(accountExternalIdDebit) + .accountExternalIdCredit(accountExternalIdCredit) + .transferType(TransferType.fromId(transferTypeId)) + .value(value) + .status(TransactionStatus.PENDING) + .createdAt(LocalDateTime.now()) + .build(); + } + + public void approve() { + this.status = TransactionStatus.APPROVED; + } + + public void reject() { + this.status = TransactionStatus.REJECTED; + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/TransactionStatus.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/TransactionStatus.java new file mode 100644 index 0000000000..6c33ffc897 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/TransactionStatus.java @@ -0,0 +1,7 @@ +package com.retotecnico.transaction.domain.model; + +public enum TransactionStatus { + PENDING, + APPROVED, + REJECTED +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/TransferType.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/TransferType.java new file mode 100644 index 0000000000..74c980e322 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/model/TransferType.java @@ -0,0 +1,32 @@ +package com.retotecnico.transaction.domain.model; + +public enum TransferType { + TRANSFER(1, "Transfer"), + PAYMENT(2, "Payment"), + DEPOSIT(3, "Deposit"); + + private final int id; + private final String name; + + TransferType(int id, String name) { + this.id = id; + this.name = name; + } + + public int getId() { + return id; + } + + public String getName() { + return name; + } + + public static TransferType fromId(int id) { + for (TransferType type : values()) { + if (type.id == id) { + return type; + } + } + throw new IllegalArgumentException("Invalid transfer type id: " + id); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/CreateTransactionUseCase.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/CreateTransactionUseCase.java new file mode 100644 index 0000000000..cd149b67bc --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/CreateTransactionUseCase.java @@ -0,0 +1,17 @@ +package com.retotecnico.transaction.domain.port.in; + +import com.retotecnico.transaction.domain.model.Transaction; + +import java.math.BigDecimal; +import java.util.UUID; + +/** + * Input port - use case for creating a transaction. + */ +public interface CreateTransactionUseCase { + + Transaction execute(UUID accountExternalIdDebit, + UUID accountExternalIdCredit, + int transferTypeId, + BigDecimal value); +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/GetTransactionUseCase.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/GetTransactionUseCase.java new file mode 100644 index 0000000000..8863309ff4 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/GetTransactionUseCase.java @@ -0,0 +1,13 @@ +package com.retotecnico.transaction.domain.port.in; + +import com.retotecnico.transaction.domain.model.Transaction; + +import java.util.UUID; + +/** + * Input port - use case for retrieving a transaction. + */ +public interface GetTransactionUseCase { + + Transaction execute(UUID transactionExternalId); +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/UpdateTransactionStatusUseCase.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/UpdateTransactionStatusUseCase.java new file mode 100644 index 0000000000..d370942dcc --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/in/UpdateTransactionStatusUseCase.java @@ -0,0 +1,11 @@ +package com.retotecnico.transaction.domain.port.in; + +import java.util.UUID; + +/** + * Input port - use case for updating transaction status from anti-fraud. + */ +public interface UpdateTransactionStatusUseCase { + + void execute(UUID transactionExternalId, String status); +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionCacheRepository.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionCacheRepository.java new file mode 100644 index 0000000000..039368643c --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionCacheRepository.java @@ -0,0 +1,18 @@ +package com.retotecnico.transaction.domain.port.out; + +import com.retotecnico.transaction.domain.model.Transaction; + +import java.util.Optional; +import java.util.UUID; + +/** + * Output port - cache abstraction for CQRS read model (Redis). + */ +public interface TransactionCacheRepository { + + void save(Transaction transaction); + + Optional findById(UUID transactionExternalId); + + void deleteById(UUID transactionExternalId); +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionEventPublisher.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionEventPublisher.java new file mode 100644 index 0000000000..4f13c40152 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionEventPublisher.java @@ -0,0 +1,11 @@ +package com.retotecnico.transaction.domain.port.out; + +import com.retotecnico.transaction.domain.model.Transaction; + +/** + * Output port - publishes transaction events to messaging system (Kafka). + */ +public interface TransactionEventPublisher { + + void publishTransactionCreated(Transaction transaction); +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionRepository.java b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionRepository.java new file mode 100644 index 0000000000..db3844bf30 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/domain/port/out/TransactionRepository.java @@ -0,0 +1,16 @@ +package com.retotecnico.transaction.domain.port.out; + +import com.retotecnico.transaction.domain.model.Transaction; + +import java.util.Optional; +import java.util.UUID; + +/** + * Output port - persistence abstraction (Write model). + */ +public interface TransactionRepository { + + Transaction save(Transaction transaction); + + Optional findById(UUID transactionExternalId); +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/in/rest/TransactionController.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/in/rest/TransactionController.java new file mode 100644 index 0000000000..2414e9e32f --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/in/rest/TransactionController.java @@ -0,0 +1,47 @@ +package com.retotecnico.transaction.infrastructure.adapter.in.rest; + +import com.retotecnico.transaction.application.dto.CreateTransactionRequest; +import com.retotecnico.transaction.application.dto.TransactionResponse; +import com.retotecnico.transaction.domain.model.Transaction; +import com.retotecnico.transaction.domain.port.in.CreateTransactionUseCase; +import com.retotecnico.transaction.domain.port.in.GetTransactionUseCase; +import jakarta.validation.Valid; +import lombok.RequiredArgsConstructor; +import org.springframework.http.HttpStatus; +import org.springframework.http.ResponseEntity; +import org.springframework.web.bind.annotation.*; + +import java.util.UUID; + +@RestController +@RequestMapping("/api/transactions") +@RequiredArgsConstructor +public class TransactionController { + + private final CreateTransactionUseCase createTransactionUseCase; + private final GetTransactionUseCase getTransactionUseCase; + + @PostMapping + public ResponseEntity createTransaction( + @Valid @RequestBody CreateTransactionRequest request) { + + Transaction transaction = createTransactionUseCase.execute( + request.getAccountExternalIdDebit(), + request.getAccountExternalIdCredit(), + request.getTranferTypeId(), + request.getValue() + ); + + return ResponseEntity.status(HttpStatus.CREATED) + .body(TransactionResponse.fromDomain(transaction)); + } + + @GetMapping("/{transactionExternalId}") + public ResponseEntity getTransaction( + @PathVariable UUID transactionExternalId) { + + Transaction transaction = getTransactionUseCase.execute(transactionExternalId); + + return ResponseEntity.ok(TransactionResponse.fromDomain(transaction)); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/cache/RedisTransactionCacheAdapter.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/cache/RedisTransactionCacheAdapter.java new file mode 100644 index 0000000000..5c312b80e0 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/cache/RedisTransactionCacheAdapter.java @@ -0,0 +1,65 @@ +package com.retotecnico.transaction.infrastructure.adapter.out.cache; + +import com.retotecnico.transaction.application.dto.TransactionResponse; +import com.retotecnico.transaction.domain.model.Transaction; +import com.retotecnico.transaction.domain.model.TransactionStatus; +import com.retotecnico.transaction.domain.model.TransferType; +import com.retotecnico.transaction.domain.port.out.TransactionCacheRepository; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.data.redis.core.RedisTemplate; +import org.springframework.stereotype.Component; + +import java.util.Optional; +import java.util.UUID; +import java.util.concurrent.TimeUnit; + +/** + * Adapter implementing the output port for CQRS read model using Redis. + */ +@Slf4j +@Component +@RequiredArgsConstructor +public class RedisTransactionCacheAdapter implements TransactionCacheRepository { + + private static final String CACHE_PREFIX = "transaction:"; + private static final long TTL_HOURS = 24; + + private final RedisTemplate redisTemplate; + + @Override + public void save(Transaction transaction) { + String key = CACHE_PREFIX + transaction.getTransactionExternalId(); + TransactionResponse response = TransactionResponse.fromDomain(transaction); + redisTemplate.opsForValue().set(key, response, TTL_HOURS, TimeUnit.HOURS); + log.debug("Cached transaction: {}", transaction.getTransactionExternalId()); + } + + @Override + public Optional findById(UUID transactionExternalId) { + String key = CACHE_PREFIX + transactionExternalId; + TransactionResponse cached = redisTemplate.opsForValue().get(key); + + if (cached == null) { + return Optional.empty(); + } + + // Convert cached response back to domain object + Transaction transaction = Transaction.builder() + .transactionExternalId(cached.getTransactionExternalId()) + .transferType(TransferType.valueOf(cached.getTransactionType().getName().toUpperCase())) + .status(TransactionStatus.valueOf(cached.getTransactionStatus().getName().toUpperCase())) + .value(cached.getValue()) + .createdAt(cached.getCreatedAt()) + .build(); + + log.debug("Cache hit for transaction: {}", transactionExternalId); + return Optional.of(transaction); + } + + @Override + public void deleteById(UUID transactionExternalId) { + String key = CACHE_PREFIX + transactionExternalId; + redisTemplate.delete(key); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/messaging/KafkaTransactionPublisher.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/messaging/KafkaTransactionPublisher.java new file mode 100644 index 0000000000..ce62a73c0d --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/messaging/KafkaTransactionPublisher.java @@ -0,0 +1,36 @@ +package com.retotecnico.transaction.infrastructure.adapter.out.messaging; + +import com.retotecnico.common.event.TransactionCreatedEvent; +import com.retotecnico.transaction.domain.model.Transaction; +import com.retotecnico.transaction.domain.port.out.TransactionEventPublisher; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.kafka.core.KafkaTemplate; +import org.springframework.stereotype.Component; + +/** + * Adapter implementing the output port - publishes events to Kafka. + */ +@Slf4j +@Component +@RequiredArgsConstructor +public class KafkaTransactionPublisher implements TransactionEventPublisher { + + private static final String TOPIC = "transaction-created"; + + private final KafkaTemplate kafkaTemplate; + + @Override + public void publishTransactionCreated(Transaction transaction) { + TransactionCreatedEvent event = TransactionCreatedEvent.builder() + .transactionExternalId(transaction.getTransactionExternalId()) + .accountExternalIdDebit(transaction.getAccountExternalIdDebit()) + .accountExternalIdCredit(transaction.getAccountExternalIdCredit()) + .transferTypeId(transaction.getTransferType().getId()) + .value(transaction.getValue()) + .build(); + + kafkaTemplate.send(TOPIC, transaction.getTransactionExternalId().toString(), event); + log.info("Published transaction-created event for: {}", transaction.getTransactionExternalId()); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/messaging/KafkaTransactionStatusConsumer.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/messaging/KafkaTransactionStatusConsumer.java new file mode 100644 index 0000000000..37fd64b20e --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/messaging/KafkaTransactionStatusConsumer.java @@ -0,0 +1,34 @@ +package com.retotecnico.transaction.infrastructure.adapter.out.messaging; + +import com.retotecnico.common.event.TransactionStatusEvent; +import com.retotecnico.transaction.domain.port.in.UpdateTransactionStatusUseCase; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.kafka.annotation.KafkaListener; +import org.springframework.stereotype.Component; + +/** + * Kafka consumer - listens for transaction status updates from Anti-Fraud service. + */ +@Slf4j +@Component +@RequiredArgsConstructor +public class KafkaTransactionStatusConsumer { + + private final UpdateTransactionStatusUseCase updateTransactionStatusUseCase; + + @KafkaListener( + topics = "transaction-status", + groupId = "transaction-service-group", + containerFactory = "statusKafkaListenerContainerFactory" + ) + public void onTransactionStatus(TransactionStatusEvent event) { + log.info("Received transaction-status event: id={}, status={}", + event.getTransactionExternalId(), event.getStatus()); + + updateTransactionStatusUseCase.execute( + event.getTransactionExternalId(), + event.getStatus() + ); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/JpaTransactionRepositoryAdapter.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/JpaTransactionRepositoryAdapter.java new file mode 100644 index 0000000000..ead9bad6b4 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/JpaTransactionRepositoryAdapter.java @@ -0,0 +1,32 @@ +package com.retotecnico.transaction.infrastructure.adapter.out.persistence; + +import com.retotecnico.transaction.domain.model.Transaction; +import com.retotecnico.transaction.domain.port.out.TransactionRepository; +import lombok.RequiredArgsConstructor; +import org.springframework.stereotype.Component; + +import java.util.Optional; +import java.util.UUID; + +/** + * Adapter implementing the output port for persistence using JPA. + */ +@Component +@RequiredArgsConstructor +public class JpaTransactionRepositoryAdapter implements TransactionRepository { + + private final SpringDataTransactionRepository springDataRepository; + + @Override + public Transaction save(Transaction transaction) { + TransactionJpaEntity entity = TransactionMapper.toJpaEntity(transaction); + TransactionJpaEntity saved = springDataRepository.save(entity); + return TransactionMapper.toDomain(saved); + } + + @Override + public Optional findById(UUID transactionExternalId) { + return springDataRepository.findById(transactionExternalId) + .map(TransactionMapper::toDomain); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/SpringDataTransactionRepository.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/SpringDataTransactionRepository.java new file mode 100644 index 0000000000..c2f59be0aa --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/SpringDataTransactionRepository.java @@ -0,0 +1,10 @@ +package com.retotecnico.transaction.infrastructure.adapter.out.persistence; + +import org.springframework.data.jpa.repository.JpaRepository; +import org.springframework.stereotype.Repository; + +import java.util.UUID; + +@Repository +public interface SpringDataTransactionRepository extends JpaRepository { +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/TransactionJpaEntity.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/TransactionJpaEntity.java new file mode 100644 index 0000000000..7c2e2d1245 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/TransactionJpaEntity.java @@ -0,0 +1,45 @@ +package com.retotecnico.transaction.infrastructure.adapter.out.persistence; + +import jakarta.persistence.*; +import lombok.AllArgsConstructor; +import lombok.Builder; +import lombok.Data; +import lombok.NoArgsConstructor; + +import java.math.BigDecimal; +import java.time.LocalDateTime; +import java.util.UUID; + +/** + * JPA entity - infrastructure concern, maps to database table. + */ +@Entity +@Table(name = "transactions") +@Data +@Builder +@NoArgsConstructor +@AllArgsConstructor +public class TransactionJpaEntity { + + @Id + @Column(name = "transaction_external_id", nullable = false, updatable = false) + private UUID transactionExternalId; + + @Column(name = "account_external_id_debit", nullable = false) + private UUID accountExternalIdDebit; + + @Column(name = "account_external_id_credit", nullable = false) + private UUID accountExternalIdCredit; + + @Column(name = "transfer_type_id", nullable = false) + private int transferTypeId; + + @Column(name = "value", nullable = false, precision = 19, scale = 2) + private BigDecimal value; + + @Column(name = "status", nullable = false, length = 20) + private String status; + + @Column(name = "created_at", nullable = false) + private LocalDateTime createdAt; +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/TransactionMapper.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/TransactionMapper.java new file mode 100644 index 0000000000..77acf5e889 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/adapter/out/persistence/TransactionMapper.java @@ -0,0 +1,38 @@ +package com.retotecnico.transaction.infrastructure.adapter.out.persistence; + +import com.retotecnico.transaction.domain.model.Transaction; +import com.retotecnico.transaction.domain.model.TransactionStatus; +import com.retotecnico.transaction.domain.model.TransferType; + +/** + * Mapper between domain model and JPA entity. + */ +public class TransactionMapper { + + private TransactionMapper() { + } + + public static TransactionJpaEntity toJpaEntity(Transaction domain) { + return TransactionJpaEntity.builder() + .transactionExternalId(domain.getTransactionExternalId()) + .accountExternalIdDebit(domain.getAccountExternalIdDebit()) + .accountExternalIdCredit(domain.getAccountExternalIdCredit()) + .transferTypeId(domain.getTransferType().getId()) + .value(domain.getValue()) + .status(domain.getStatus().name()) + .createdAt(domain.getCreatedAt()) + .build(); + } + + public static Transaction toDomain(TransactionJpaEntity entity) { + return Transaction.builder() + .transactionExternalId(entity.getTransactionExternalId()) + .accountExternalIdDebit(entity.getAccountExternalIdDebit()) + .accountExternalIdCredit(entity.getAccountExternalIdCredit()) + .transferType(TransferType.fromId(entity.getTransferTypeId())) + .value(entity.getValue()) + .status(TransactionStatus.valueOf(entity.getStatus())) + .createdAt(entity.getCreatedAt()) + .build(); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/JacksonConfig.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/JacksonConfig.java new file mode 100644 index 0000000000..50907a20e1 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/JacksonConfig.java @@ -0,0 +1,18 @@ +package com.retotecnico.transaction.infrastructure.config; + +import com.fasterxml.jackson.databind.SerializationFeature; +import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule; +import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; + +@Configuration +public class JacksonConfig { + + @Bean + public Jackson2ObjectMapperBuilderCustomizer jsonCustomizer() { + return builder -> builder + .modules(new JavaTimeModule()) + .featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/KafkaConfig.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/KafkaConfig.java new file mode 100644 index 0000000000..338b570926 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/KafkaConfig.java @@ -0,0 +1,65 @@ +package com.retotecnico.transaction.infrastructure.config; + +import com.retotecnico.common.event.TransactionCreatedEvent; +import com.retotecnico.common.event.TransactionStatusEvent; +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.clients.producer.ProducerConfig; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.apache.kafka.common.serialization.StringSerializer; +import org.springframework.beans.factory.annotation.Value; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory; +import org.springframework.kafka.core.*; +import org.springframework.kafka.support.serializer.JsonDeserializer; +import org.springframework.kafka.support.serializer.JsonSerializer; + +import java.util.HashMap; +import java.util.Map; + +@Configuration +public class KafkaConfig { + + @Value("${spring.kafka.bootstrap-servers}") + private String bootstrapServers; + + // ==================== PRODUCER (TransactionCreatedEvent) ==================== + + @Bean + public ProducerFactory producerFactory() { + Map props = new HashMap<>(); + props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers); + props.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, StringSerializer.class); + props.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, JsonSerializer.class); + props.put(JsonSerializer.ADD_TYPE_INFO_HEADERS, false); + return new DefaultKafkaProducerFactory<>(props); + } + + @Bean + public KafkaTemplate kafkaTemplate() { + return new KafkaTemplate<>(producerFactory()); + } + + // ==================== CONSUMER (TransactionStatusEvent) ==================== + + @Bean + public ConsumerFactory statusConsumerFactory() { + Map props = new HashMap<>(); + props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers); + props.put(ConsumerConfig.GROUP_ID_CONFIG, "transaction-service-group"); + props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class); + props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, JsonDeserializer.class); + props.put(JsonDeserializer.TRUSTED_PACKAGES, "com.retotecnico.common.event"); + props.put(JsonDeserializer.VALUE_DEFAULT_TYPE, TransactionStatusEvent.class.getName()); + props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest"); + return new DefaultKafkaConsumerFactory<>(props); + } + + @Bean + public ConcurrentKafkaListenerContainerFactory statusKafkaListenerContainerFactory() { + ConcurrentKafkaListenerContainerFactory factory = + new ConcurrentKafkaListenerContainerFactory<>(); + factory.setConsumerFactory(statusConsumerFactory()); + return factory; + } +} diff --git a/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/RedisConfig.java b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/RedisConfig.java new file mode 100644 index 0000000000..3aedb52be8 --- /dev/null +++ b/transaction-service/src/main/java/com/retotecnico/transaction/infrastructure/config/RedisConfig.java @@ -0,0 +1,38 @@ +package com.retotecnico.transaction.infrastructure.config; + +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.SerializationFeature; +import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule; +import com.retotecnico.transaction.application.dto.TransactionResponse; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.data.redis.connection.RedisConnectionFactory; +import org.springframework.data.redis.core.RedisTemplate; +import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer; +import org.springframework.data.redis.serializer.StringRedisSerializer; + +@Configuration +public class RedisConfig { + + @Bean + public RedisTemplate redisTemplate(RedisConnectionFactory connectionFactory) { + ObjectMapper mapper = new ObjectMapper(); + mapper.registerModule(new JavaTimeModule()); + mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); + mapper.activateDefaultTyping( + mapper.getPolymorphicTypeValidator(), + ObjectMapper.DefaultTyping.NON_FINAL + ); + + GenericJackson2JsonRedisSerializer jsonSerializer = new GenericJackson2JsonRedisSerializer(mapper); + + RedisTemplate template = new RedisTemplate<>(); + template.setConnectionFactory(connectionFactory); + template.setKeySerializer(new StringRedisSerializer()); + template.setValueSerializer(jsonSerializer); + template.setHashKeySerializer(new StringRedisSerializer()); + template.setHashValueSerializer(jsonSerializer); + template.afterPropertiesSet(); + return template; + } +} diff --git a/transaction-service/src/main/resources/application.properties b/transaction-service/src/main/resources/application.properties new file mode 100644 index 0000000000..b6b3342e20 --- /dev/null +++ b/transaction-service/src/main/resources/application.properties @@ -0,0 +1,28 @@ +# ==================== Server ==================== +server.port=8080 + +# ==================== PostgreSQL (Write Model) ==================== +spring.datasource.url=jdbc:postgresql://localhost:5432/transactions_db +spring.datasource.username=postgres +spring.datasource.password=postgres +spring.datasource.driver-class-name=org.postgresql.Driver + +# JPA / Hibernate +spring.jpa.hibernate.ddl-auto=update +spring.jpa.show-sql=true +spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect +spring.jpa.properties.hibernate.format_sql=true + +# ==================== Kafka ==================== +spring.kafka.bootstrap-servers=localhost:9092 + +# ==================== Redis (Read Model - CQRS) ==================== +spring.data.redis.host=localhost +spring.data.redis.port=6379 + +# ==================== Jackson ==================== +spring.jackson.serialization.write-dates-as-timestamps=false + +# ==================== Logging ==================== +logging.level.com.retotecnico=DEBUG +logging.level.org.springframework.kafka=INFO diff --git a/transaction-service/src/test/java/com/retotecnico/transaction/TransactionServiceApplicationTests.java b/transaction-service/src/test/java/com/retotecnico/transaction/TransactionServiceApplicationTests.java new file mode 100644 index 0000000000..2ce9c1f724 --- /dev/null +++ b/transaction-service/src/test/java/com/retotecnico/transaction/TransactionServiceApplicationTests.java @@ -0,0 +1,14 @@ +package com.retotecnico.transaction; + +import org.junit.jupiter.api.Test; +import org.springframework.boot.test.context.SpringBootTest; +import org.springframework.test.context.ActiveProfiles; + +@SpringBootTest +@ActiveProfiles("test") +class TransactionServiceApplicationTests { + + @Test + void contextLoads() { + } +} diff --git a/transaction-service/src/test/java/com/retotecnico/transaction/domain/model/TransactionTest.java b/transaction-service/src/test/java/com/retotecnico/transaction/domain/model/TransactionTest.java new file mode 100644 index 0000000000..c51519b49f --- /dev/null +++ b/transaction-service/src/test/java/com/retotecnico/transaction/domain/model/TransactionTest.java @@ -0,0 +1,47 @@ +package com.retotecnico.transaction.domain.model; + +import org.junit.jupiter.api.Test; + +import java.math.BigDecimal; +import java.util.UUID; + +import static org.junit.jupiter.api.Assertions.*; + +class TransactionTest { + + @Test + void shouldCreateTransactionWithPendingStatus() { + Transaction tx = Transaction.create( + UUID.randomUUID(), + UUID.randomUUID(), + 1, + new BigDecimal("500") + ); + + assertNotNull(tx.getTransactionExternalId()); + assertEquals(TransactionStatus.PENDING, tx.getStatus()); + assertEquals(TransferType.TRANSFER, tx.getTransferType()); + assertNotNull(tx.getCreatedAt()); + } + + @Test + void shouldApproveTransaction() { + Transaction tx = Transaction.create(UUID.randomUUID(), UUID.randomUUID(), 1, new BigDecimal("100")); + tx.approve(); + assertEquals(TransactionStatus.APPROVED, tx.getStatus()); + } + + @Test + void shouldRejectTransaction() { + Transaction tx = Transaction.create(UUID.randomUUID(), UUID.randomUUID(), 1, new BigDecimal("100")); + tx.reject(); + assertEquals(TransactionStatus.REJECTED, tx.getStatus()); + } + + @Test + void shouldThrowExceptionForInvalidTransferType() { + assertThrows(IllegalArgumentException.class, () -> + Transaction.create(UUID.randomUUID(), UUID.randomUUID(), 99, new BigDecimal("100")) + ); + } +} diff --git a/transaction-service/src/test/resources/application-test.properties b/transaction-service/src/test/resources/application-test.properties new file mode 100644 index 0000000000..757ee7958f --- /dev/null +++ b/transaction-service/src/test/resources/application-test.properties @@ -0,0 +1,8 @@ +# ==================== Test Profile ==================== +spring.datasource.url=jdbc:h2:mem:testdb +spring.datasource.driver-class-name=org.h2.Driver +spring.jpa.hibernate.ddl-auto=create-drop +spring.kafka.bootstrap-servers=localhost:9092 +spring.data.redis.host=localhost +spring.data.redis.port=6379 +spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration,org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration