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DefaultRSocketRequesterBuilderTests.java
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DefaultRSocketRequesterBuilderTests.java
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/*
* Copyright 2002-2020 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.messaging.rsocket;
import java.lang.reflect.Field;
import java.time.Duration;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.function.Consumer;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.rsocket.ConnectionSetupPayload;
import io.rsocket.DuplexConnection;
import io.rsocket.core.DefaultConnectionSetupPayload;
import io.rsocket.core.RSocketConnector;
import io.rsocket.frame.decoder.PayloadDecoder;
import io.rsocket.metadata.WellKnownMimeType;
import io.rsocket.transport.ClientTransport;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Flux;
import reactor.core.publisher.Mono;
import org.springframework.core.ResolvableType;
import org.springframework.core.codec.Decoder;
import org.springframework.core.codec.DecodingException;
import org.springframework.core.codec.StringDecoder;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.core.io.buffer.DataBufferFactory;
import org.springframework.core.io.buffer.DefaultDataBufferFactory;
import org.springframework.core.io.buffer.NettyDataBufferFactory;
import org.springframework.util.MimeType;
import org.springframework.util.MimeTypeUtils;
import org.springframework.util.ReflectionUtils;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyNoInteractions;
/**
* Unit tests for {@link DefaultRSocketRequesterBuilder}.
*
* @author Brian Clozel
*/
public class DefaultRSocketRequesterBuilderTests {
private ClientTransport transport;
private final MockConnection connection = new MockConnection();
private final TestRSocketConnectorConfigurer connectorConfigurer = new TestRSocketConnectorConfigurer();
@BeforeEach
public void setup() {
this.transport = mock(ClientTransport.class);
given(this.transport.connect()).willReturn(Mono.just(this.connection));
}
@Test
@SuppressWarnings("unchecked")
public void rsocketConnectorConfigurerAppliesAtSubscription() {
Consumer<RSocketStrategies.Builder> strategiesConfigurer = mock(Consumer.class);
RSocketRequester.builder()
.rsocketConnector(this.connectorConfigurer)
.rsocketStrategies(strategiesConfigurer)
.connect(this.transport);
verifyNoInteractions(this.transport);
assertThat(this.connectorConfigurer.connector()).isNull();
}
@Test
@SuppressWarnings({"unchecked", "deprecation"})
public void rsocketConnectorConfigurer() {
ClientRSocketFactoryConfigurer factoryConfigurer = mock(ClientRSocketFactoryConfigurer.class);
Consumer<RSocketStrategies.Builder> strategiesConfigurer = mock(Consumer.class);
RSocketRequester.builder()
.rsocketConnector(this.connectorConfigurer)
.rsocketFactory(factoryConfigurer)
.rsocketStrategies(strategiesConfigurer)
.connect(this.transport)
.block();
// RSocketStrategies and RSocketConnector configurers should have been called
verify(this.transport).connect();
verify(strategiesConfigurer).accept(any(RSocketStrategies.Builder.class));
verify(factoryConfigurer).configure(any(io.rsocket.RSocketFactory.ClientRSocketFactory.class));
assertThat(this.connectorConfigurer.connector()).isNotNull();
}
@Test
public void defaultDataMimeType() {
RSocketRequester requester = RSocketRequester.builder()
.connect(this.transport)
.block();
assertThat(requester.dataMimeType())
.as("Default data MimeType, based on the first Decoder")
.isEqualTo(MimeTypeUtils.TEXT_PLAIN);
}
@Test
public void defaultDataMimeTypeWithCustomDecoderRegistered() {
RSocketStrategies strategies = RSocketStrategies.builder()
.decoder(new TestJsonDecoder(MimeTypeUtils.APPLICATION_JSON))
.build();
RSocketRequester requester = RSocketRequester.builder()
.rsocketStrategies(strategies)
.connect(this.transport)
.block();
assertThat(requester.dataMimeType())
.as("Default data MimeType, based on the first configured, non-default Decoder")
.isEqualTo(MimeTypeUtils.APPLICATION_JSON);
}
@Test
public void dataMimeTypeExplicitlySet() {
RSocketRequester requester = RSocketRequester.builder()
.dataMimeType(MimeTypeUtils.APPLICATION_JSON)
.connect(this.transport)
.block();
ConnectionSetupPayload setupPayload = Mono.from(this.connection.sentFrames())
.map(DefaultConnectionSetupPayload::new)
.block();
assertThat(setupPayload.dataMimeType()).isEqualTo("application/json");
assertThat(requester.dataMimeType()).isEqualTo(MimeTypeUtils.APPLICATION_JSON);
}
@Test
public void mimeTypesCannotBeChangedAtRSocketConnectorLevel() {
MimeType dataMimeType = MimeTypeUtils.APPLICATION_JSON;
MimeType metaMimeType = MimeTypeUtils.parseMimeType(WellKnownMimeType.MESSAGE_RSOCKET_ROUTING.getString());
RSocketRequester requester = RSocketRequester.builder()
.metadataMimeType(metaMimeType)
.dataMimeType(dataMimeType)
.rsocketConnector(connector -> {
connector.metadataMimeType("text/plain");
connector.dataMimeType("application/xml");
})
.connect(this.transport)
.block();
ConnectionSetupPayload setupPayload = Mono.from(this.connection.sentFrames())
.map(DefaultConnectionSetupPayload::new)
.block();
assertThat(setupPayload.dataMimeType()).isEqualTo(dataMimeType.toString());
assertThat(setupPayload.metadataMimeType()).isEqualTo(metaMimeType.toString());
assertThat(requester.dataMimeType()).isEqualTo(dataMimeType);
assertThat(requester.metadataMimeType()).isEqualTo(metaMimeType);
}
@Test
public void setupRoute() {
RSocketRequester.builder()
.dataMimeType(MimeTypeUtils.TEXT_PLAIN)
.metadataMimeType(MimeTypeUtils.TEXT_PLAIN)
.setupRoute("toA")
.setupData("My data")
.connect(this.transport)
.block();
ConnectionSetupPayload setupPayload = Mono.from(this.connection.sentFrames())
.map(DefaultConnectionSetupPayload::new)
.block();
assertThat(setupPayload.getMetadataUtf8()).isEqualTo("toA");
assertThat(setupPayload.getDataUtf8()).isEqualTo("My data");
}
@Test
public void setupWithAsyncValues() {
Mono<String> asyncMeta1 = Mono.delay(Duration.ofMillis(1)).map(aLong -> "Async Metadata 1");
Mono<String> asyncMeta2 = Mono.delay(Duration.ofMillis(1)).map(aLong -> "Async Metadata 2");
Mono<String> data = Mono.delay(Duration.ofMillis(1)).map(aLong -> "Async data");
RSocketRequester.builder()
.dataMimeType(MimeTypeUtils.TEXT_PLAIN)
.setupRoute("toA")
.setupMetadata(asyncMeta1, new MimeType("text", "x.test.metadata1"))
.setupMetadata(asyncMeta2, new MimeType("text", "x.test.metadata2"))
.setupData(data)
.connect(this.transport)
.block();
ConnectionSetupPayload payload = Mono.from(this.connection.sentFrames())
.map(DefaultConnectionSetupPayload::new)
.block();
MimeType compositeMimeType =
MimeTypeUtils.parseMimeType(WellKnownMimeType.MESSAGE_RSOCKET_COMPOSITE_METADATA.getString());
DefaultMetadataExtractor extractor = new DefaultMetadataExtractor(StringDecoder.allMimeTypes());
extractor.metadataToExtract(new MimeType("text", "x.test.metadata1"), String.class, "asyncMeta1");
extractor.metadataToExtract(new MimeType("text", "x.test.metadata2"), String.class, "asyncMeta2");
Map<String, Object> metadataValues = extractor.extract(payload, compositeMimeType);
assertThat(metadataValues.get("asyncMeta1")).isEqualTo("Async Metadata 1");
assertThat(metadataValues.get("asyncMeta2")).isEqualTo("Async Metadata 2");
assertThat(payload.getDataUtf8()).isEqualTo("Async data");
}
@Test
public void frameDecoderMatchesDataBufferFactory() throws Exception {
testPayloadDecoder(new NettyDataBufferFactory(ByteBufAllocator.DEFAULT), PayloadDecoder.ZERO_COPY);
testPayloadDecoder(new DefaultDataBufferFactory(), PayloadDecoder.DEFAULT);
}
private void testPayloadDecoder(DataBufferFactory bufferFactory, PayloadDecoder payloadDecoder)
throws NoSuchFieldException {
RSocketStrategies strategies = RSocketStrategies.builder()
.dataBufferFactory(bufferFactory)
.build();
RSocketRequester.builder()
.rsocketStrategies(strategies)
.rsocketConnector(this.connectorConfigurer)
.connect(this.transport)
.block();
RSocketConnector connector = this.connectorConfigurer.connector();
assertThat(connector).isNotNull();
Field field = RSocketConnector.class.getDeclaredField("payloadDecoder");
ReflectionUtils.makeAccessible(field);
PayloadDecoder decoder = (PayloadDecoder) ReflectionUtils.getField(field, connector);
assertThat(decoder).isSameAs(payloadDecoder);
}
static class MockConnection implements DuplexConnection {
private Publisher<ByteBuf> sentFrames;
public Publisher<ByteBuf> sentFrames() {
return this.sentFrames;
}
@Override
public Mono<Void> send(Publisher<ByteBuf> frames) {
this.sentFrames = frames;
return Mono.empty();
}
@Override
public Flux<ByteBuf> receive() {
return Flux.empty();
}
@Override
public ByteBufAllocator alloc() {
return ByteBufAllocator.DEFAULT;
}
@Override
public Mono<Void> onClose() {
return Mono.empty();
}
@Override
public void dispose() {
}
}
static class TestRSocketConnectorConfigurer implements RSocketConnectorConfigurer {
private RSocketConnector connector;
RSocketConnector connector() {
return this.connector;
}
@Override
public void configure(RSocketConnector connector) {
this.connector = connector;
}
}
static class TestJsonDecoder implements Decoder<Object> {
private final MimeType mimeType;
TestJsonDecoder(MimeType mimeType) {
this.mimeType = mimeType;
}
@Override
public List<MimeType> getDecodableMimeTypes() {
return Collections.singletonList(this.mimeType);
}
@Override
public boolean canDecode(ResolvableType elementType, MimeType mimeType) {
throw new UnsupportedOperationException();
}
@Override
public Mono<Object> decodeToMono(Publisher<DataBuffer> inputStream, ResolvableType elementType,
MimeType mimeType, Map<String, Object> hints) {
throw new UnsupportedOperationException();
}
@Override
public Flux<Object> decode(Publisher<DataBuffer> inputStream, ResolvableType elementType,
MimeType mimeType, Map<String, Object> hints) {
throw new UnsupportedOperationException();
}
@Override
public Object decode(DataBuffer buffer, ResolvableType targetType, MimeType mimeType,
Map<String, Object> hints) throws DecodingException {
throw new UnsupportedOperationException();
}
}
}