Command Dispatch with Kafka Enabled.

Author: zaxxio

k8s/server-depl.yaml

@@ -1,32 +1,55 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: server-depl
+  name: client-depl
+  namespace: default
 spec:
   replicas: 1
   selector:
     matchLabels:
-      app: server
+      app: client
   template:
     metadata:
-      name: server-pod
+      name: client-pod
       labels:
-        app: server
+        app: client
     spec:
       containers:
-        - name: server
-          image: laithharb/server:v1
+        - name: client
+          image: laithharb/web-app:v1
 ---
 apiVersion: v1
 kind: Service
 metadata:
-  name: server-srv
+  name: client-srv
+  namespace: default
 spec:
   type: NodePort
   selector:
-    app: server
+    app: client
   ports:
     - port: 3000
       targetPort: 3000
-      nodePort: 30005
-      protocol: TCP
+      nodePort: 30007
+      protocol: TCP
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  annotations:
+    nginx.ingress.kubernetes.io/rewrite-target: /$1
+  name: rewrite
+  namespace: default
+spec:
+  ingressClassName: nginx
+  rules:
+    - host: auth.avaand.com
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: client-srv
+                port:
+                  number: 3000

logs/app.log

@@ -0,0 +1,36 @@
+{
+  "type": "record",
+  "name": "AccountCreatedEventAvro",
+  "namespace": "org.wsd.app.event",
+  "fields": [
+    {
+      "name": "id",
+      "type": "string"
+    },
+    {
+      "name": "accountHolder",
+      "type": "string"
+    },
+    {
+      "name": "accountType",
+      "type": "string"
+    },
+    {
+      "name": "createdAt",
+      "type": {
+        "type": "int",
+        "logicalType": "date"
+      }
+    },
+    {
+      "name": "balance",
+      "type": "double",
+      "default": 0
+    },
+    {
+      "name": "version",
+      "type": "int",
+      "default": 0
+    }
+  ]
+}

src/main/avro/AccountCreatedEventAvro.avsc

@@ -4,13 +4,10 @@
 
 package org.wsd.app.config;
 
-import jakarta.annotation.PostConstruct;
 import org.axonframework.commandhandling.CommandBus;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationContext;
-import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
-import org.springframework.stereotype.Component;
 
 @Configuration
 public class CQRSConfig {

src/main/avro/SensorEvent.avsc renamed to src/main/avro/SensorEventAvro.avsc

@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2024. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package org.wsd.app.core.api;
+
+
+import io.swagger.v3.oas.annotations.security.SecurityRequirement;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.wsd.app.config.SwaggerConfig;
+import org.wsd.app.core.infrastructure.CommandDispatcher;
+import org.wsd.app.cqrs.commands.CreateAccountCommand;
+
+import java.time.LocalDate;
+import java.util.UUID;
+
+@RestController
+@RequiredArgsConstructor
+@RequestMapping("/api/accounts")
+@Tag(name = "Account Command Controller")
+@SecurityRequirement(name = SwaggerConfig.BEARER_TOKEN)
+public class AccountCommandController {
+
+    @Autowired
+    private CommandDispatcher commandDispatcher;
+
+    @PostMapping("/create")
+    public ResponseEntity<String> createAccount(CreateAccountCommand command) {
+        UUID uuid = UUID.randomUUID();
+        CreateAccountCommand createAccountCommand = CreateAccountCommand.builder()
+                .id(uuid.toString())
+                .accountHolder(command.getAccountHolder())
+                .accountType(command.getAccountType())
+                .createdAt(LocalDate.now())
+                .balance(command.getBalance())
+                .build();
+        commandDispatcher.send(createAccountCommand);
+        return ResponseEntity.status(HttpStatus.CREATED).body(uuid.toString());
+    }
+
+}

src/main/java/org/wsd/app/config/CQRSConfig.java

@@ -15,5 +15,5 @@
 @AllArgsConstructor
 @SuperBuilder
 public abstract class BaseEvent extends Message {
-    private int version;
+    private int version = -1;
 }

src/main/java/org/wsd/app/core/api/AccountCommandController.java

@@ -8,7 +8,7 @@
 import org.wsd.app.core.commands.CommandHandler;
 
 public interface CommandDispatcher<T extends BaseCommand> {
-    <T extends BaseCommand> void registerHandler(Class<T> type, CommandHandler<T> command);
+    <T extends BaseCommand> void registerHandler(Class<T> type, CommandHandler command);
 
     <T extends BaseCommand> void send(T command);
 }

src/main/java/org/wsd/app/core/events/BaseEvent.java

@@ -5,7 +5,6 @@
 package org.wsd.app.core.infrastructure;
 
 import org.wsd.app.core.events.BaseEvent;
-import org.wsd.app.core.events.EventModel;
 import org.wsd.app.cqrs.infrastructure.AggregateNotFoundException;
 
 import java.util.List;

src/main/java/org/wsd/app/core/infrastructure/CommandDispatcher.java

@@ -13,7 +13,7 @@
 import org.wsd.app.cqrs.events.CashDepositedEvent;
 import org.wsd.app.cqrs.events.CashWithdrawnEvent;
 
-import java.util.Date;
+import java.time.LocalDate;
 
 @Data
 @NoArgsConstructor
@@ -26,7 +26,7 @@ public AccountAggregate(CreateAccountCommand createAccountCommand) {
                 AccountCreatedEvent.builder()
                         .id(createAccountCommand.getId())
                         .accountHolder(createAccountCommand.getAccountHolder())
-                        .createdAt(new Date())
+                        .createdAt(LocalDate.now())
                         .accountType(createAccountCommand.getAccountType())
                         .balance(createAccountCommand.getBalance())
                         .build()