ecos-gateway-app

Purpose:

Image of one of the central components of the microservice architecture. The application implements an API gateway for interacting with other microservices

Tags:

Nexus_gateway <tag> - ecos-gateway project build

Docker Compose service template:

gateway-app:
    logging:
      options:
        max-size: "10m"
        max-file: "5"
    image: nexus.citeck.ru/ecos-gateway:<GATEWAY_APP_IMAGE
    container_name: gateway-app
    hostname: gateway-app
    restart: unless-stopped
    stop_grace_period: 1m
    environment:
      - JHIPSTER_REGISTRY_PASSWORD=alfr3sc0
      - _JAVA_OPTIONS=-Xmx512m -Xms256m
      - SPRING_PROFILES_ACTIVE=prod,swagger
      - EUREKA_CLIENT_SERVICE_URL_DEFAULTZONE=http://admin:$${jhipster.registry.password}@jhipster-registry:8761/eureka
      - SPRING_CLOUD_CONFIG_URI=http://admin:$${jhipster.registry.password}@jhipster-registry:8761/config
      - SPRING_DATASOURCE_URL=jdbc:postgresql://micro-postgresql:5432/gateway
      - JHIPSTER_SLEEP=30 # gives time for the JHipster Registry to boot before the application
    expose:
      - 8085/tcp
    networks:
      - app_network
    depends_on:
      - jhipster-registry
      - micro-postgresql
  micro-postgresql:
    image: postgres:10.4
    container_name: micro-postgresql
    hostname: micro-postgresql
    restart: unless-stopped
    stop_grace_period: 1m
    environment:
      - POSTGRES_USER=gateway
      - POSTGRES_PASSWORD=
    networks:
      - app_network

Used variables:

• _JAVA_OPTIONS - parameters for jvm

• SPRING_PROFILES_ACTIVE - profiles used during deployment

• EUREKA_CLIENT_SERVICE_URL_DEFAULTZONE - URL of the default eureka load balancer, contains credentials

• SPRING_CLOUD_CONFIG_URI - URL of the cloud config server used, contains credentials

• JHIPSTER_REGISTRY_PASSWORD - user password for authentication in eureka load balancer

• SPRING_DATASOURCE_URL - URL of the postgresql datasource used

• JHIPSTER_SLEEP - timeout before microservice deployment

Typical log output for successful deployment:

gateway-app                 | ----------------------------------------------------------
gateway-app                 |   Application 'gateway' is running! Access URLs:
gateway-app                 |   Local:          http://localhost:8085/
gateway-app                 |   External:       http://172.25.0.22:8085/
gateway-app                 |   Profile(s):     [prod, swagger]
gateway-app                 | ----------------------------------------------------------
gateway-app                 | 2020-05-13 07:17:43.131  INFO 1 --- [           main] ru.citeck.ecos.GatewayApp                :
gateway-app                 | ----------------------------------------------------------
gateway-app                 |   Config Server:  Connected to the JHipster Registry running in Docker
gateway-app                 | ----------------------------------------------------------