1.25.0 release notes

22nd August 2023

🌟 New features

  • GraalVM Support: Armeria now provides GraalVM reachability metadata to easily build GraalVM native images. #5005

  • Micrometer Observation Support: Support for Micrometer Observation is added. Refer to ObservationClient or ObservationService for details on how to integrate with Armeria. #4659 #4980

    ObservationRegistry observationRegistry = ...
WebClient.builder()
  .decorator(ObservationClient.newDecorator(observationRegistry))
...
Server.builder()
  .decorator(ObservationService.newDecorator(observationRegistry))
...

  • WebSocket Client Support: You can now send and receive data over WebSocket using WebSocketClient. #4972

    WebSocketClient client = WebSocketClient.of("ws://...");
client.connect("/").thenAccept(webSocketSession -> {
  WebSocketWriter writer = WebSocket.streaming();
  webSocketSessions.setOutbound(writer);
  outbound.write("Hello!");

  Subscriber<WebSocketFrame> subscriber = new Subscriber<WebSocketFrame>() {
    ...
  }
  webSocketSessions.inbound().subscribe(subscriber);
});

  • Implement gRPC Richer Error Model More Easily: You can now easily use gRPC Richer Error Model via GoogleGrpcStatusFunction. #4614 #4986

    GoogleGrpcStatusFunction statusFunction = (ctx, throwable, metadata) -> {
  if (throwable instanceof MyException) {
    return com.google.rpc.Status.newBuilder()
      .setCode(Code.UNAUTHENTICATED.getNumber())
      .addDetails(detail(throwable))
      .build();
  }
  ...
};
Server.builder().service(
  GrpcService.builder()
    .exceptionMapping(statusFunction))

  • Set HTTP Trailers Easily: You can now easily set trailers to be sent after the data stream using HttpRequest.of() or HttpResponse.of(). #3959 #4727

  • New API for Multipart Headers: You can now retrieve headers from a multipart request in an annotated service using MultipartFile.headers(). #5106

  • Access RequestLogProperty Values More Easily: RequestLogAccess.getIfAvailable() has been introduced, which allows users to access a RequestLogProperty immediately if available. #4956 #4966

  • Keep an Idle Connection Alive on PING: The keepAliveOnPing option has been introduced. Enabling this option will keep an idle connection alive when an HTTP/2 PING frame or OPTIONS * HTTP/1.1 is received. The option can be configured by ServerBuilder.idleTimeout() or ClientFactoryBuilder.idleTimeout(). #4794 #4806

  • Create a StreamMessage from Future: You can now easily create a StreamMessage from a CompletionStage using StreamMessage.of())>. #4995

  • More Shortcuts for PrometheusExpositionService: You can now create a PrometheusExpositionService without specifying the default CollectorRegistry explicitly. #5134

📈 Improvements

  • The number of event loops is equal to the number of cores by default when io_uring is used as the transport type. #5089
  • You can now customize error responses when a service for a request is not found using ServiceErrorHandler.renderStatus(). #4996
  • Redirection for a trailing slash is done correctly even if a reverse proxy rewrites the path. #4994
  • DocService now tries to guess the correct route behind a reverse proxy. #4987
  • The RetentionPolicy of @UnstableApi annotation is now CLASS so that bytecode analysis tools can detect the declaration and usage of unstable APIs. #5131

🛠️ Bug fixes

  • GrpcService now returns an INTERNAL error code if an error occurs while serializing gRPC metadata. #4625 #4686
  • DnsCache now allows zero TTL for resolved DNS records. #5119
  • Armeria's DNS resolver doesn't cache a DNS whose query was timed out. #5117
  • Fixed a bug where headers could be written twice if Content-Length was exceeded during HTTP/2 cleartext upgrade. #5113
  • ServiceRequestContext.localAddress() and ServiceRequestContext.remoteAddress() now return correct values when using domain sockets in abstract namespace. #5096
  • armeria-logback12, armeria-logback13, and armeria-logback14 have been introduced for better compatibility with Logback. #5045 #5079 #5078 #5077
  • You can now use either an inline debug form or a modal debug form when using DocService. #5072
  • When using Spring integrations, even if internal-services.port and management.server.port are set to the same value internal services are bound to the port only once. #4796 #5022
  • Exceptions that occurred during a TLS handshake are properly propagated to users. #4950
  • AggregatedHttpObject.content() now respects the charset attribute in the Content-Type header if available. #4931 #4948
  • Routes with dynamic predicates are not incorrectly cached anymore. #4927 #4934

📃 Documentation

  • A new page has been added which describes how to integrate Armeria with Spring Boot. #4670 #4957
  • Documentation on how Flags work in Armeria has been added. #4870
  • A new example on how to use krotoDC with Armeria has been added. #5092

☢️ Breaking changes

  • The toStringHelper() method in DynamicEndpointGroup has been replaced with toString(Consumer) to avoid exposing an internal API in the public API. #5132

🏚️ Deprecations

⛓ Dependencies

  • gRPC-Java 1.56.0 → 1.57.2
  • GraphQL Kotlin 6.5.2 → 6.5.3
  • Guava 32.0.1-jre → 32.1.2-jre
  • Jakarta Websocket 2.1.0 → 2.1.1
  • Kafka client 3.4.0 → 3.4.1
  • Kotlin 1.8.22 → 1.9.0
  • Kotlin Coroutine 1.7.1 → 1.7.3
  • Logback 1.4.7 → 1.4.11
  • Micrometer 1.11.1 → 1.11.3
  • Netty 4.1.94.Final → 4.1.96.Final
  • Protobuf 3.22.3 → 3.24.0
  • Reactor 3.5.7 → 3.5.8
  • Resilience4j 2.0.2 → 2.1.0
  • Resteasy 5.0.5.Final → 5.0.7.Final
  • Sangria 4.0.0 → 4.0.1
  • scala-collection-compat 2.10.0 → 2.11.0
  • Spring 6.0.9 → 6.0.11
  • Spring Boot 2.7.12 → 2.7.14, 3.1.0 → 3.1.1
  • Tomcat 10.1.10 → 10.1.12

🙇 Thank you

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