Weather-Forecast - Spring Boot Web Reactive with Cloud-Starter-Zipkin and Java 12

Simple weather forecast SpringBoot app using openweathermap API

• Zipkin server
• SpringBoot service using Java 12 for Weather Forecast using a random forecast generator if Open Weather API is not configured correctly
• Docker-Compose Orchestration

Prerequisite

1. Docker-compose
2. Create a free account at https://home.openweathermap.org (otherwise a failover will generate random values)

1 - Update your open-weather appId

Either

• resources/application.properties
• docker-compose.yml
• environment variable ${OPENWEATHER_APPID}

2 - Start to service

cd weather-forecast
docker-compose up -d

3 - Send some requests

The API is simplistic: http://localhost:8080/{country_code}/{city}

curl -X GET http://localhost:8080/uk/london

4 - Analyse the data in Zipkin

Open your favorite browser and go to http://localhost:9411/zipkin to see the data generated by your request.

To come:

• Extraction of the Failover service in a separate micro-service
• Kubernetes Orchestration