80. Running Spring Cloud Services in Development

The Launcher CLI can be used to run common services like Eureka, Config Server etc. from the command line. To list the available services you can do spring cloud --list, and to launch a default set of services just spring cloud. To choose the services to deploy, just list them on the command line, e.g.

$ spring cloud eureka configserver h2 kafka stubrunner zipkin

Summary of supported deployables:

ServiceNameAddressDescription

eureka

Eureka Server

http://localhost:8761

Eureka server for service registration and discovery. All the other services show up in its catalog by default.

configserver

Config Server

http://localhost:8888

Spring Cloud Config Server running in the "native" profile and serving configuration from the local directory ./launcher

h2

H2 Database

http://localhost:9095 (console), jdbc:h2:tcp://localhost:9096/{data}

Relation database service. Use a file path for {data} (e.g. ./target/test) when you connect. Remember that you can add ;MODE=MYSQL or ;MODE=POSTGRESQL to connect with compatibility to other server types.

kafka

Kafka Broker

http://localhost:9091 (actuator endpoints), localhost:9092

 

hystrixdashboard

Hystrix Dashboard

http://localhost:7979

Any Spring Cloud app that declares Hystrix circuit breakers publishes metrics on /hystrix.stream. Type that address into the dashboard to visualize all the metrics,

dataflow

Dataflow Server

http://localhost:9393

Spring Cloud Dataflow server with UI at /admin-ui. Connect the Dataflow shell to target at root path.

zipkin

Zipkin Server

http://localhost:9411

Zipkin Server with UI for visualizing traces. Stores span data in memory and accepts them via HTTP POST of JSON data.

stubrunner

Stub Runner Boot

http://localhost:8750

Downloads WireMock stubs, starts WireMock and feeds the started servers with stored stubs. Pass stubrunner.ids to pass stub coordinates and then go to http://localhost:8750/stubs.

Each of these apps can be configured using a local YAML file with the same name (in the current working directory or a subdirectory called "config" or in ~/.spring-cloud). E.g. in configserver.yml you might want to do something like this to locate a local git repository for the backend:

configserver.yml. 

spring:
  profiles:
    active: git
  cloud:
    config:
      server:
        git:
          uri: file://${user.home}/dev/demo/config-repo

E.g. in Stub Runner app you could fetch stubs from your local .m2 in the following way.

stubrunner.yml. 

stubrunner:
  workOffline: true
  ids:
    - com.example:beer-api-producer:+:9876

80.1 Adding Additional Applications

Additional applications can be added to ./config/cloud.yml (not ./config.yml because that would replace the defaults), e.g. with

config/cloud.yml. 

spring:
  cloud:
    launcher:
      deployables:
        source:
          coordinates: maven://com.example:source:0.0.1-SNAPSHOT
          port: 7000
        sink:
          coordinates: maven://com.example:sink:0.0.1-SNAPSHOT
          port: 7001

when you list the apps:

$ spring cloud --list
source sink configserver dataflow eureka h2 hystrixdashboard kafka stubrunner zipkin

(notice the additional apps at the start of the list).