Spring Cloud

Spring Cloud Architecture

Kubernetes Architecture

Services

POM

Lombok
Spring Reactive Web
Spring Data Reactive MongoDB
Embedded MongoDB Database
Testcontainers
Config Client
Eureka Discovery Client
Spring Boot Actuator
Sleuth
Zipkin Client
Prometheus

spring-cloud-starter-kubernetes-client-loadbalancer
Resilience4j Reactor

<maven.build.timestamp.format>yyyy-MM-dd HH:mm</maven.build.timestamp.format>

application.yml

project:
  version: "@project.version@"
  spring-cloud-version: "@spring-cloud.version@"
  description: "@project.description@"
  timestamp: "@maven.build.timestamp@"

spring:
  application:
    name: ...service
  config:
    import: optional:configserver:http://localhost:9000

management:
  endpoints:
    web:
      exposure:
        include: [ "info", "health"]


---
spring:
  config:
    activate:
      on-profile: test
  mongodb:
    embedded:
      version: 4.4.9

Zipkin - tracing-service

docker run -d -p 9411:9411 openzipkin/zipkin

Domains

org.apache.maven.archetypes:maven-archetype-quickstart

package 
qt3.music.domains

pom.xml

<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <revision-bom>1.0.3</revision-bom>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>qt3.music</groupId>
                <artifactId>bom</artifactId>
                <version>${revision-bom}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <repositories>
        <repository>
            <id>gitlab-qt3-music</id>
            <url>https://gitlab.com/api/v4/groups/58460516/-/packages/maven</url>
        </repository>
    </repositories>
    <distributionManagement>
        <repository>
            <id>gitlab-qt3-music</id>
            <!--suppress UnresolvedMavenProperty -->
            <url>${CI_API_V4_URL}/projects/${CI_PROJECT_ID}/packages/maven</url>
        </repository>
    </distributionManagement>

    <dependency>
      <groupId>org.springframework.data</groupId>
      <artifactId>spring-data-mongodb</artifactId>
      <version>3.4.5</version>
    </dependency>
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.24</version>
    </dependency>

ci_settings.xml

cat <<EOF > ci_settings.xml
<settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
    <servers>
        <server>
            <id>gitlab-qt3-music</id>
            <configuration>
                <httpHeaders>
                    <property>
                        <name>Job-Token</name>
                        <value>"${CI_JOB_TOKEN}"</value>
                    </property>
                </httpHeaders>
            </configuration>
        </server>
    </servers>
</settings>
EOF

.gitlab-ci.yml

cat <<EOF > .gitlab-ci.yml
deploy:
  image: maven:3-openjdk-17
  script:
    - 'mvn deploy -s ci_settings.xml'
  only:
    - main
EOF

git

git init --initial-branch=main
git remote add origin git@gitlab.com:chainqt3/qt3-music/domains/<...>-domain.git

cat <<EOF > .gitignore
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/
EOF

git add .
git commit -m "Initial commit"
git push -u origin main