Weather

Reference Project weather-rpc,It based on Scala 2 and cats 1, and does not use fs2-grpc and sangria

Description

A web server that allows to get the current temperature at most of the big cities in the world.

Technology stack

• Scala 3
• cats-effect 3
• fs2-grpc
• http4s
• circe
• sangria

Running

• You need to run the server app. Go to the project dir and execute

sbt "weather-server/runMain bitlap.weather.server.WeatherApplication"

Client apps

There are 2 clients in the project:

1. a simple client that gets the temperature for a single city and sends a shutdown server command
2. a streaming client that gets the temperature for multiple cities in a stream mode. This client does not stop the server.

To run the simple client execute

sbt "weather-client/runMain bitlap.weather.client.SimpleWeatherClient"

To run the streaming client execute

sbt "weather-client/runMain bitlap.weather.client.StreamingWeatherClient"

http4s http

curl --location 'http://localhost:8888/weather' \
--header 'Content-Type: application/json' \
--data '{
    "name": "Beijing",
    "countryCode": "CN",
    "region": "Beijing"
}'

sangria graphql

curl --location 'http://localhost:8888/graphql' \
--header 'Content-Type: application/json' \
--data '{"query":"query test {\n    city(name:\"Beijing\",countryCode:\"CN\"){\n     value\n    }\n}","variables":{}}'