Armeria Newsletter vol. 4

July 14, 2022

From the devs

✨ We've released several new versions since our last newsletter with a bunch of new exciting features!
- 1.17.0
  - Easier way to send and receive RESTful APIs
  - Ability to limit the maximum length of Thrift messages
  - Injecting dependencies in annotations
  - Support for Kotlin nullable type (?) in annotated services
- 1.16.0
  - New metrics for TLS handshake results
  - Handling Decorator annotation with GrpcService for your gRPC stubs
  - Programmatic Flags configuration via Java SPI
- 1.15.0
  - Support for gRPC health check protocol
  - Multipart file uploads in annotated services
  - GraphQL support in DocService
  - Refactored DNS resolver cache with higher hit ratio and reduced traffic
  - New metrics that help you get alerts before your TLS certificates are expired
- 1.14.0
  - Experimental support for Scala 3
  - Fluent conversion of HttpResponse into a desired type using WebClient
  - Various build options for gRPC using GrpcClientBuilder

👂 Armeria team is hosting bi-weekly virtual office hours.
- It was great talking with all of you through the video chat. We hope we can see you again in the near future. :)

From the community

🎓 Try out this guided tutorial for REST Service! This super friendly and simple tutorial will guide you to make a blog service, with which you can create, read, update and delete blog posts. In particular, you'll be using these Armeria features:
- Service annotations
- Request converter
- Parameter injection
- Exception handler
- Blocking task executor
🦾 MSA(Microservices Architecture): Harder, Better, Faster, Stronger
- In the session, @cnabro introduces how Series On migrated their monoliths into microservices using Armeria, gRPC, and GraphQL. He also mentions about how they monitored microservices using Zipkin and Elasticsearch.
- Here are the Video and Slides (also providing Korean and Japanese)

We need your comments

🤔 Your opinion means a lot to us. Please let us know what you think about these proposals:
- #4289 Supporting Spring Cloud Gateway integration(also considering GatewayAutoConfiguration, HttpClientFactory, and HttpClient)
- #4286 Changing the insertion order of ExceptionHandlerFunction
- #3820 Providing a way to enable gRPC reflection service and making it enabled by default

Good first issues

🔰 Want to contribute but not sure where to start from? Try one of these:

#4237 Support for request scoped DataLoader for GraphQL-Java

class GraphqlServiceBuilder {
    public GraphqlServiceBuilder dataLoaderRegistry(
      Function<ServiceRequestContext, DataLoaderRegistry>
      dataLoaderRegistrySupplier) {
         // This method will be mutually exclusive
         // with configureDataLoaderRegistry(...)
    }
}