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0.97.0 release notes

8th December 2019

🌟 New features

We now have a new immutable cookie API with SameSite attribute support, which replaces Netty's cookie API. #1567 #2286

Cookie c1 = Cookie.of("foo", "bar")
Cookie c2 = Cookie.builder("alice", "bob")
                  .domain("foo.com")
                  .path("/bar")
                  .maxAge(3600)
                  .sameSite("Strict")
                  .build();
// Encoding
ResponseHeaders resHeaders =
    ResponseHeaders.builder(HttpStatus.OK)
                   .add(HttpHeaderNames.SET_COOKIE,
                        Cookie.toSetCookieHeaders(c1, c2))
                   .build();
// Decoding
Cookies cookies =
    Cookie.fromSetCookieHeaders(
        resHeaders.getAll(HttpHeaderNames.SET_COOKIE));

You can now replace the request headers of HttpRequest more conveniently using HttpRequest.withHeaders(RequestHeaders). #2278 #2283

HttpRequest req = HttpRequest.of(HttpMethod.POST, "/post",
                                 MediaType.PLAIN_TEXT_UTF_8,
                                 "Hello!");
RequestHeaders newHeaders = RequestHeaders.of(HttpMethod.PUT, "/put",
                                              MediaType.PLAIN_TEXT_UTF_8);
HttpRequest newReq = req.withHeaders(newHeaders);

ServiceRequestContext.blockingTaskExecutor() is now a ScheduledExecutorService instead of ExecutorService, which means you can schedule delayed or periodic tasks. #2269

// A service that sends `PING!` every second.
HttpService service = (ctx, req) -> {
    HttpResponse res = HttpResponse.streaming();
    res.write(ResponseHeaders.of(200));
    AtomicReference<ScheduledFuture<?>> futureHolder = new AtomicReference<>();
    futureHolder.set(ctx.blockingTaskExecutor().scheduleWithFixedDelay(() -> {
        boolean success = res.tryWrite(HttpData.ofUtf8("PING!\r\n"));
        if (!success) {
            if (futureHolder.get() != null) {
                futureHolder.get().cancel(false);
            }
        }
    }, 1, TimeUnit.SECONDS));
    return res;
};

You can now add converters and exception handlers to annotated services more conveniently using the new fluent builder methods. #2242

Server server =
    Server.builder()
          .annotatedService().requestConverters(converterA, converterB)
                             .responseConverters(converterC, converterD)
                             .exceptionHandlers(handlerA, handlerB)
                             .build(myAnnotatedService)
          .build();

You can now configure how Armeria decides ServiceRequestContext.clientAddress() via ServerBuilder.clientAddressMapper(). #1631 #2294

Server.builder()
      .clientAddressMapper(proxiedAddrs -> {
          InetSocketAddress srcAddr = proxiedAddrs.sourceAddress();
          List<InetSocketAddress> destAddrs = proxiedAddrs.destinationAddresses();
          if (destAddrs.isEmpty()) {
              // No proxy servers involved.
              return srcAddr;
          } else {
              // When there are more than one proxy server involved,
              // trust only the address given by the last proxy server.
              return destAddrs.get(destAddrs.size() - 1);
          }
      });

You can now choose a different SLF4J Logger than the default one when using LoggingClient or LoggingService. #2220 #2237

Logger myLogger = LoggerFactory.getLogger(MyService.class);
Server server =
    Server.builder()
          .service("/",
                   myService.decorate(LoggingService.builder()
                                                    .logger(myLogger)
                                                    .newDecorator()))
          .build();

BraveClient now adds connection timing information to a span. #2271 #2273
- connection-acquire.start and connection-acquire.end
- dns-resolve.start and dns-resolve.end
- socket-connect.start and socket-connect.end
- connection-reuse.start and connection-reuse.end
withDeadlineAfter is now supported for gRPC client stubs. #2284
GrpcService now allows controlling whether to respect the "grpc-timeout" header sent by a gRPC client. #2284
- Consider disabling this feature via GrpcServiceBuilder.useClientTimeoutHeader() in an insecure environment.

THttpService and ThriftCallService now supports adding more than one Thrift service at the same endpoint. #2164 #2285

class MyFooService implements FooService.Iface ... {
    public void foo() { ... }
}

class MyBarService implements BarService.Iface ... {
    public void bar() { ... }
}

// "foo" call goes to MyFooService and
// "bar" call goes to MyBarService.
Server server =
    Server.builder()
          .service("/thrift",
                   THttpService.builder()
                               .addService(new MyFooService())
                               .addService(new MyBarService())
                               .build())
          .build();

armeria-spring-boot-actuator-autoconfigure now supports the official CORS settings. #2063

# application.yml
management.endpoints.web.cors.allowed-origins: https://example.com
management.endpoints.web.cors.allowed-methods: GET,POST

📈 Improvements

Improved routing performance. #2293 #2295
The core JAR file is now smaller, by removing unnecessary resources such as web fonts and favicons. #2299 #2300
HttpRequest.of(RequestHeaders, Publisher) now handles the case where the Publisher is actually an HttpRequest. #2278 #2283

🔒 Security fixes

🛠️ Bug fixes

The event loop threads are properly cleaned up when Server failed to start. #2288
Server now sends a redirect response correctly for the requests without a trailing slash (/) even when you bound a fallback service at prefix:/. #2116 #2292
Fixed a bug where routing cache did not work as expected, leading suboptimal routing performance. #2293
Annotated services now accept only the first "Cookie" header when injecting Cookies, because multiple "Cookie" headers must be prohibited according to RFC 6265. #2286
GrpcService now respects gRPC stub deadline. #2008 #2284

🏚️ Deprecations

Deprecated HttpRequest.of(HttpRequest, RequestHeaders) in favor of HttpRequest.withHeaders() #2283
Deprecated HttpRequest.of(AggregatedHttpRequest) and HttpResponse.of(AggregatedHttpResponse) in favor of AggregatedHttpRequest.toHttpRequest() and AggregatedHttpResponse.toHttpResponse(). #2283
- These methods were removed from AggregatedHttpMessage some time ago due to ambiguity, but now we are reviving them because we have separate types for requests and responses.
Cookies.copyOf() has been deprecated in favor of Cookies.of(). #2286
AnnotatedServiceBuildingBuilder.requestConverter(), responseConverter() and exceptionHandler() have been deprecated in favor of requestConverters(), responseConverters() and exceptionHandlers() respectively. #2242
Sampler.rateLimited() has been deprecated in favor of rateLimiting(). #2122 #2289
THttpService.of() and ofFormats() factory methods that require a Map<String, ?> have been deprecated. Use THttpService.builder() and call THttpService.addService(String, Object) multiple times instead. #2285

☢️ Breaking changes

ServerBuilder.blockingTaskExecutor() now requires a ScheduledExecutorService instead of an ExecutorService. #2269
The behavior of automatic redirection for the case of missing trailing slash (/) has been changed (in a good way). #2116 #2292
- For example, previously, when a client sent a request to /docs, the following server routed the request to TomcatService:
```
Server server =
    Server.builder()
          .serviceUnder("/docs", new DocService())
          .serviceUnder("/", TomcatSerivce.forClassPath(...))
          .build();
```
- However, from this release, the request will not be routed to TomcatService but the server will issue a redirect response to /docs/.
ProxiedAddresses class has been redesigned to handle the case of more than one intermediary proxy server. #1631 #2294
Cookies now uses Armeria's own Cookie. #2286
Cookies now may contain the cookies with the same name. #2286
- Note that RFC does not prohibit duplicate names at all, so this is correct behavior.
Annotated services now accept only the first "Cookie" header when decoding cookies. Sending multiple "Cookie" headers was a violation of RFC 6265 anyway. #2286
The ThriftCallService factory method with signature of(Map<String, ? extends Iterable<?>>) has been changed to of(Map<String, ? extends Iterable<?>>) #2285

⛓ Dependencies

Brave 1.3.1
Jetty 9.4.22 -> 9.4.24
Micrometer 1.3.1 -> 1.3.2
Netty TCNative BoringSSL 2.0.27 -> 2.0.26
Project Reactor 3.3.0 -> 3.3.1
RxJava2 2.2.14 -> 2.2.15
Spring Boot 2.1.10 -> 2.2.1
Tomcat 9.0.27 -> 9.0.29, 8.5.47 -> 8.5.49