armeria-0.11.0.Final

New features

• #114 Distributed tracing via Zipkin/Brave

This release introduces distributed tracing capability to Armeria clients and servers using Brave, a distributed tracing library compatible with Zipkin. This enables us to watch timing data among the whole Armeria RPC chain.

Decorating a client

// Create a brave instance with service name, span collector, and sampling rate.
Brave brave = new Brave.Builder("MyClientMain")
        .spanCollector(new ScribeSpanCollector("127.0.0.1", 9410))
        .traceSampler(Sampler.create(0.01f))
        .build();

MyService.Iface client =
        new ClientBuilder("tbinary+http://127.0.0.1:8080/thrift/myService")
                .decorator(HttpTracingClient.newDecorator(brave))
                .build(MyService.Iface.class);

Decorating a server

// Create a brave instance with service name, span collector, and sampling rate.
Brave brave = new Brave.Builder("MyServiceMain")
        .spanCollector(new ScribeSpanCollector("127.0.0.1", 9410))
        .traceSampler(Sampler.create(0.01f))
        .build();

ServerBuilder builder = new ServerBuilder();
builder.port(8080, SessionProtocol.HTTP);
builder.serviceAt("/thrift/myservice",
                  ThriftService.of(new MyServiceHandler(brave))
                               .decorate(HttpTracingService.newDecorator(brave));

Bug fixes

• #118 Default maxFrameLength differs between client and server side.
• #119 Unexpected exceptions are not logged properly.