Edit: Found a solution, I will update this post
Edit 2: The problem was that I defined my Commands and Events inside the src folder of my first and second microservice. The first microservice shot a com.myApplication.PaymentManagementService.commands.ApproveOrderCommand-command, while the command handler in the second microservice expected a com.myApplication.OrderManagementService.commands.ApproveOrderCommand-command.
I fixed the redundancy by lifting the commands and events a few hierarchy levels into a common api-folder that both services can access. Now the second micoservice expects a com.myApplication.api.commands.ApproveOrderCommand, that the first microservice shoots.
That solution may sound trivial to some, but since this is not described anywhere in the documentation and I didn't expect the name of the path to be relevant in handling the commands and events, you have to figure that out first.
Original post:
I'm currently implementing a distributed command bus with spring cloud. I followed the below example exactly, but I'm getting the following issues in both of my (Client-)Microservices.
https://docs.axoniq.io/reference-guide/v/master/extensions/spring-cloud
1. Could not auto-wire. There is more than one Bean of "Registration" type.
2. Cannot find a bean with the qualifier "localSegment", even though I'm using Spring Auto Configuration.
I can start both the client-applications (this one and the other microservice) nevertheless.
But:
I can't send a command from the first Microservice to the second Microservice, the following error appears:
org.axonframework.commandhandling.NoHandlerForCommandException: No node known to accept [com.myApplication.PaymentManagementService.commands.CheckPaymentCommand]
Both microservices are registered to my eureka server.
In the first Microservice, I produce a command over a REST Endpoint, the Command fires outside of an Aggegrate (via commandGateway.send()).
In the second Microservice, I want to receive the command:
@Component
public class TestCommandHandler {
@CommandHandler
public void handle(ApproveOrderCommand command){
System.out.println("Command delivered!");
}
}
Is there anything wrong with my dependencies or application properties? Do I have to setup a saga for this to work?
One of my poms:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.myApplication</groupId>
<artifactId>PaymentManagementService</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>PaymentManagementService</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<spring-cloud.version>Hoxton.SR9</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>2.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<!-- Axon -->
<dependency>
<groupId>org.axonframework</groupId>
<artifactId>axon-spring-boot-starter</artifactId>
<version>4.4.5</version>
<!--
<exclusions>
<exclusion>
<groupId>org.axonframework</groupId>
<artifactId>axon-server-connector</artifactId>
</exclusion>
</exclusions>
-->
</dependency>
<dependency>
<groupId>org.axonframework</groupId>
<artifactId>axon-spring-boot-autoconfigure</artifactId>
<version>4.4.5</version>
</dependency>
<!-- Spring Cloud -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.axonframework.extensions.springcloud</groupId>
<artifactId>axon-springcloud-spring-boot-starter</artifactId>
<version>4.3.1</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter</artifactId>
<version>2.2.6.RELEASE</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
</repository>
</repositories>
</project>
application.properties of Microservice 1
application.properties of Microservice 2
