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Introduce a way to set headers and status code for streaming response
Relates to: quarkusio#33130
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77 changes: 77 additions & 0 deletions
77
...resteasy-reactive/common/runtime/src/main/java/org/jboss/resteasy/reactive/RestMulti.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package org.jboss.resteasy.reactive; | ||
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| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Objects; | ||
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| import org.jboss.resteasy.reactive.common.util.CaseInsensitiveMap; | ||
| import org.jboss.resteasy.reactive.common.util.MultivaluedTreeMap; | ||
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| import io.smallrye.mutiny.Multi; | ||
| import io.smallrye.mutiny.infrastructure.Infrastructure; | ||
| import io.smallrye.mutiny.operators.AbstractMulti; | ||
| import io.smallrye.mutiny.subscription.MultiSubscriber; | ||
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| /** | ||
| * A wrapper around {@link Multi} that gives resource methods a way to specify the HTTP status code and HTTP headers | ||
| * when streaming a result. | ||
| */ | ||
| public class RestMulti<T> extends AbstractMulti<T> { | ||
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| private final Multi<T> multi; | ||
| private final Integer status; | ||
| private final MultivaluedTreeMap<String, String> headers; | ||
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| public static <T> RestMulti.Builder<T> from(Multi<T> multi) { | ||
| return new RestMulti.Builder<>(multi); | ||
| } | ||
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| private RestMulti(Builder<T> builder) { | ||
| this.multi = builder.multi; | ||
| this.status = builder.status; | ||
| this.headers = builder.headers; | ||
| } | ||
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| @Override | ||
| public void subscribe(MultiSubscriber<? super T> subscriber) { | ||
| multi.subscribe(Infrastructure.onMultiSubscription(multi, subscriber)); | ||
| } | ||
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| public Integer getStatus() { | ||
| return status; | ||
| } | ||
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| public Map<String, List<String>> getHeaders() { | ||
| return headers; | ||
| } | ||
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| public static class Builder<T> { | ||
| private final Multi<T> multi; | ||
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| private Integer status; | ||
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| private final MultivaluedTreeMap<String, String> headers = new CaseInsensitiveMap<>(); | ||
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| private Builder(Multi<T> multi) { | ||
| this.multi = Objects.requireNonNull(multi, "multi cannot be null"); | ||
| } | ||
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| public Builder<T> status(int status) { | ||
| this.status = status; | ||
| return this; | ||
| } | ||
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| public Builder<T> header(String name, String value) { | ||
| if (value == null) { | ||
| headers.remove(name); | ||
| return this; | ||
| } | ||
| headers.add(name, value); | ||
| return this; | ||
| } | ||
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| public RestMulti<T> build() { | ||
| return new RestMulti<>(this); | ||
| } | ||
| } | ||
| } |
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