v1.8.0

May 14, 2021

🌟 New features

You can now create a HealthChecker that updates its healthiness periodically. #3392 #3406

HealthChecker.of(() -> {
    HealthCheckStatus status = ...;
    UnmodifiableFuture.completedFuture(status);
}, Duration.ofSeconds(5));

You can now create a propagating ContextAwareExecutorService and ContextAwareScheduledExecutorService using RequestContext.makeContextPropagating(ExecutorService) and RequestContext.makeContextPropagating(ScheduledExecutorService). The executors propagate a RequestContext to submitted tasks when a submission thread is a request-context-aware thread. #3483

ExecutorService myExecutor = Executors.newSingleThreadExecutor();
ExecutorService contextAwareExecutor = RequestContext.makeContextPropagating(myExecutor);
// Make sure the current thread is a request-context-aware thread
RequestContext ctx = RequestContext.current();
contextAwareExecutor.execute(() -> {
    assert RequestContext.current() == ctx;
});

You can now set a maximum allowed length of a server response in the request level using WebClientRequestPreparation.maxResponseLength(). #3565
```
WebClient client = ...;
client.prepare()
      .maxResponseLength(maxResponseLength)
      ...
      .execute();
```

You can now add or set HTTP headers and query params with java.util.Map. #3499 #3502

 HttpHeaders
    .builder()
    .add(Map.of("foo", "1"))
    .set(Map.of("bar", "2"));

QueryParams.builder()
           .add(Map.of("page", "1"))
           .set(Map.of("size", "2"));

You can now disable DNS query metrics using DnsResolverGroupBuilder.disableDnsQueryMetrics(). #3368 #3552

ClientFactory.builder()
             .domainNameResolverCustomizer(customizer -> {
                 customizer.disableDnsQueryMetrics();
             })

You can now create a JSON Lines response using JsonLines. #3446 #3456

Publisher<MyObject> publisher = StreamMessage.of(new MyObject(...), new MyObject(...), ...);
HttpReponse response = JsonLines.fromPublisher(publisher);

You can now create an RpcRequest with a service name using RpcRequest.of(). #3537

You can now customize MetricCollectingService with MetricCollectingServiceConfigurator when using Spring integration. #3536

@Bean
public MetricCollectingServiceConfigurator metricCollectingServiceConfigurator() {
    return builder -> builder
            .successFunction((context, log) -> {
                final int statusCode = log.responseHeaders().status().code();
                return (statusCode >= 200 && statusCode < 400) || statusCode == 404;
            });
}

📈 Improvements

Various performance optimizations. #3534 #3535 #3537 #3538 #3539 #3543 #3548
You can now null-safely access the elements of collections and arrays in Kotlin 1.5. #3527 #3558
You can now use code completion for armeria.ssl when using IntelliJ IDEA. #3507

🛠️ Bug fixes

Armeria server now correctly sends Connection: close header on an invalid HTTP/1 request. #3506
You no longer see an infinity loop or an IllegalStateException: Recurse update when invalidating a DNS cache. #3528
LoggingService now correctly logs a request failed with the server error class(5xx) that is served by TransientService. #3551 #3559
You no longer see trailing dollar signs from a service name. #3508
You no longer see a NullPointerException when a request times out. #3564

⛓ Dependencies

Caffeine 2.9.0 -> 2.9.1
Dropwizard Metrics 4.1.20 -> 4.1.21
java-jwt 3.15.0 -> 3.16.0
Micrometer 1.6.6 -> 1.7.0
- Note that PrometheusMeterRegistry will work with the Prometheus simpleclient dependency version 0.10.0 or later only. See Micrometer 1.7.0 release note for more information.
Reactor 3.4.5 -> 3.4.6
scala-collection-compat 2.4.3 -> 2.4.4
scala-java8-compat 0.9.1 -> 1.0.0
Spring 5.3.6 -> 5.3.7