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Dev mode - gRPC: close streams on reload for non-mutiny services
- resolves #17428 - also use codemirror editor in Dev UI
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20 changes: 20 additions & 0 deletions
20
extensions/grpc/runtime/src/main/java/io/quarkus/grpc/runtime/devmode/CollectStreams.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| package io.quarkus.grpc.runtime.devmode; | ||
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| import static java.lang.annotation.ElementType.TYPE; | ||
| import static java.lang.annotation.RetentionPolicy.RUNTIME; | ||
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| import java.lang.annotation.Retention; | ||
| import java.lang.annotation.Target; | ||
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| import javax.interceptor.InterceptorBinding; | ||
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| /** | ||
| * | ||
| * @see StreamCollectorInterceptor | ||
| */ | ||
| @InterceptorBinding | ||
| @Target({ TYPE }) | ||
| @Retention(RUNTIME) | ||
| public @interface CollectStreams { | ||
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| } |
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84
...rpc/runtime/src/main/java/io/quarkus/grpc/runtime/devmode/StreamCollectorInterceptor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| package io.quarkus.grpc.runtime.devmode; | ||
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| import javax.annotation.Priority; | ||
| import javax.interceptor.AroundInvoke; | ||
| import javax.interceptor.Interceptor; | ||
| import javax.interceptor.InvocationContext; | ||
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| import io.grpc.stub.StreamObserver; | ||
| import io.quarkus.grpc.runtime.ServerCalls; | ||
| import io.quarkus.grpc.runtime.StreamCollector; | ||
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| @CollectStreams | ||
| @Priority(1) | ||
| @Interceptor | ||
| public class StreamCollectorInterceptor { | ||
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| private final StreamCollector streamCollector; | ||
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| public StreamCollectorInterceptor() { | ||
| this.streamCollector = ServerCalls.getStreamCollector(); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| @AroundInvoke | ||
| Object collect(InvocationContext context) throws Exception { | ||
| // Wraps the first StreamObserver parameter if available | ||
| Object[] params = context.getParameters(); | ||
| int streamIndex = 0; | ||
| StreamObserver<Object> stream = null; | ||
| for (int i = 0; i < params.length; i++) { | ||
| Object param = params[i]; | ||
| if (param == null) { | ||
| continue; | ||
| } | ||
| if (StreamObserver.class.isAssignableFrom(param.getClass())) { | ||
| stream = (StreamObserver<Object>) param; | ||
| streamIndex = i; | ||
| break; | ||
| } | ||
| } | ||
| if (stream == null) { | ||
| return context.proceed(); | ||
| } | ||
| streamCollector.add(stream); | ||
| Object[] newParams = new Object[params.length]; | ||
| for (int i = 0; i < params.length; i++) { | ||
| if (i == streamIndex) { | ||
| newParams[i] = new StreamObserverWrapper<>(stream); | ||
| } else { | ||
| newParams[i] = params[i]; | ||
| } | ||
| } | ||
| context.setParameters(newParams); | ||
| return context.proceed(); | ||
| } | ||
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| private final class StreamObserverWrapper<T> implements StreamObserver<T> { | ||
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| private final StreamObserver<T> delegate; | ||
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| public StreamObserverWrapper(StreamObserver<T> delegate) { | ||
| this.delegate = delegate; | ||
| } | ||
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| @Override | ||
| public void onNext(T value) { | ||
| delegate.onNext(value); | ||
| } | ||
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| @Override | ||
| public void onError(Throwable t) { | ||
| delegate.onError(t); | ||
| streamCollector.remove(delegate); | ||
| } | ||
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| @Override | ||
| public void onCompleted() { | ||
| delegate.onCompleted(); | ||
| streamCollector.remove(delegate); | ||
| } | ||
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| } | ||
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| } |