0.99.9 release notes

3rd August 2020

🌟 New features

  • You can now add multiple request timeout callbacks using the following methods: #2937 #2939

  • You can now specify multiple decorators with a single call when building a service binding fluently. #2889

    Server.builder()
      .route().get("/hello")
              .decorators(firstDecorator,
                          secondDecorator,
                          thirdDecorator)
              .build(helloService)
      .build();

  • You can now specify whether the entire annotated service methods have to run in a blockingTaskExecutor. #2923 #2925

    Server.builder()
      .annotatedService().pathPrefix("/my_service")
                         .useBlockingTaskExecutor(true)
                         .build(myService);

  • You can also specify the @Blocking annotation on a class. It was previously allowed only on methods. #2915

    @Blocking
public class MyBlockingAnnotatedService {
    @Get
    public String delayed() throws Exception {
        Thread.sleep(1000);
        return "slept a second";
    }
}

  • You can now bind an annotated service method to the prefix path by specifying no path. #2708 #2853

    public class MyAnnotatedService {
    @Get
    public String withoutSlash() {
        return "without slash";
    }

    @Get("/")
    public String withSlash() {
        return "with slash";
    }
}

Server server =
    Server.builder()
          .http(8080)
          .annotatedService("/prefix", new MyAnnotatedService())
          .build();
server.start().join();

assert "without slash".equals(
    WebClient.of().get("http://127.0.0.1:8080/prefix")
             .aggregate().toStringUtf8());

assert "with slash".equals(
    WebClient.of().get("http://127.0.0.1:8080/prefix/")
             .aggregate().toStringUtf8());

  • You can now send and receive grpc-web-text messages in gRPC, as well as grpc-web+proto and grpc-web+json. #2938 #2955

    MyGrpcServiceStub client =
    Clients.newClient("gproto-web-text+h2c://example.com",
                      MyGrpcServiceStub.class);

  • You can now send a request via an HAPROXY server preserving the original source and destination addresses. #2589 #2907

    ClientFactory factory =
    ClientFactory.builder()
                 .proxyConfig(ProxyConfig.haproxy(haproxyServerAddr))
                 .build();

WebClient client =
    WebClient.builder()
             .factory(factory)
             .build();

// Send an HTTP request to example.com via an HAPROXY server,
// preserving the source address by using HAPROXY protocol.
client.get("http://example.com/").aggregate().join();

  • You can now use different ProxyConfig for different Endpoints using ProxyConfigSelector. #2752

    ProxyConfigSelector mySelector = (protocol, endpoint) -> {
    // Send the requests to *.foo.com via a SOCKS5 server.
    if (endpoint.host().endsWith(".foo.com")) {
        return ProxyConfig.socks5(socksServerAddr);
    }
    // Send the requests to *.bar.com via a HAPROXY server.
    if (endpoint.host().endsWith(".bar.com")) {
        return ProxyConfig.haproxy(haproxyServerAddr);
    }
    return ProxyConfig.direct();
};

ClientFactory factory =
    ClientFactory.builder()
                 .proxyConfig(mySelector)
                 .build();

  • Added Route.patternString() which can be used as a simple human-readable description of a Route. #2932 #2933

  • HttpData now extends AutoCloseable and provides various methods useful when using SubscriptionOption.WITH_POOLED_OBJECTS. #2892

    • Note that this feature is only for the advanced users who want to reduce the number of memory copies in a performance-sensitive environment.
    • See PooledObjects for more information.

📈 Improvements

  • We now use the following Google Error Prone annotations which might be useful if you use Error Prone already or your static analysis tool supports them: #2876 #2908
    • @CheckReturnValue
    • @FormatMethod and @FormatString
    • @MustBeClosed
  • You can now specify the connection ping interval less than 10 seconds, which was previously impossible. #2944
  • Improved the load distribution of client requests by randomizing how we choose the initial event loop, which may reduce the error rate in a certain situation. #2941
  • Improved the performance of Endpoint.toString(). #2906

🛠️ Bug fixes

  • ClientRequestContext.currentOrNull() and ServiceRequestContext.currentOrNull() don't throw an IllegalStateException anymore but return null when the current context type mismatches. #2962
  • Endpoint.parse() doesn't fail anymore when given with an authority with a userInfo part. #2869 #2893
  • req.serviceName in BuiltInProperties has been renamed to req.service_name for the consistency with other property names. #2958
  • We now handle an HTTP/2 request with a Host header properly, matching the behavior of HAPROXY. #2877 #2878
  • You can now send an HTTPS request via an HTTPS CONNECT proxy server (double encryption). #2887
  • Fixed the buffer leaks in the following places: 😱 #2891 #2892 #2951
  • You are now disallowed to set a :status header when building an HttpFile, because it will make FileService misbehave. #2926.
  • Fixed an IllegalReferenceCountException when content preview is turned on. #2905
  • gRPC-Web trailers are now compressed and decompressed properly. #2930
  • Fixed the compatibility issues with grpc-kotlin #2947 #2950
  • You can now use the graceful shutdown properties when integration with Spring Boot 1. #2954
  • You can now use DocServiceConfigurator when integrating with Spring Boot 2. #2960
  • MetricCollectingService now decorates all services if the armeria.enableMetrics property is set when integrating with Spring Boot. #2873 #2898

🏚️ Deprecations

☢️ Breaking changes

  • Added final to the various classes and methods so that a user doesn't extend them beyond the devs' intention. #2927
  • com.linecorp.armeria.common.util.NonNullByDefault and UnstableApi have been moved to com.linecorp.armeria.common.annotation. #2890
  • KeyedCircuitBreakerMapping and its inner class are now package-private. #2890
  • A Host header isn't automatically translated into the :authority header anymore, so that you can preserve the original headers when writing a proxy server with Armeria. #2877 #2878
  • req.serviceName in BuiltInProperties has been renamed to req.service_name for the consistency with other property names. #2958
  • Various classes and methods that were previously deprecated have been removed. #2926
  • The new Pooled* API introduced in the previous release has been reverted due to design and performance issues. #2882 #2892
  • ClientFactoryOption.PROXY_CONFIG has been replaced with ClientFactoryOptions.PROXY_CONFIG_SELECTOR. #2752

⛓ Dependencies

  • Bouncy Castle 1.65.01 → 1.66
  • Brave 5.12.3 → 5.12.4
  • Dropwizard 2.0.10 → 2.0.12, 1.3.23 → 1.3.24
  • Dropwizard Metrics 4.1.9 → 4.1.11
  • gRPC 1.30.2 → 1.31.0
  • Jackson 2.11.1 → 2.11.2
  • Jetty 9.4.30 → 9.4.31
  • Micrometer 1.5.2 → 1.5.3, 1.3.10 → 1.3.11
  • Netty 4.1.50 → 4.1.51
    • netty-tcnative-boringssl-static 2.0.30 → 2.0.31
  • Reactor 3.3.7 → 3.3.8
  • RxJava 3.0.4 → 3.0.5
  • Spring Boot 2.3.1 → 2.3.2
  • Tomcat 9.0.36 → 9.0.37, 8.5.56 → 8.5.57
  • Shaded dependencies:
    • completable-futures 0.3.2 → 0.3.3
    • fastutil 8.3.1 → 8.4.0

🙇 Thank you

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