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Resolves: #383 Inspired by https://github.com/stas29a/coroutine-feign-client ## TODO - [ ] Separate Kotlin support module - [ ] Enhance test case - [ ] Refactoring - [ ] Clean up pom.xml
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14 changes: 14 additions & 0 deletions
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feign-reactor-core/src/main/java/reactivefeign/MethodKt.kt
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@file:JvmName("MethodKt") | ||
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package reactivefeign | ||
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import java.lang.reflect.Method | ||
import java.lang.reflect.Type | ||
import kotlin.reflect.jvm.javaType | ||
import kotlin.reflect.jvm.kotlinFunction | ||
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internal fun Method.isSuspend(): Boolean = | ||
kotlinFunction?.isSuspend ?: false | ||
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internal val Method.kotlinMethodReturnType: Type? | ||
get() = kotlinFunction?.returnType?.javaType |
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@file:JvmName("MonoKt") | ||
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package reactivefeign | ||
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import kotlinx.coroutines.reactor.awaitSingle | ||
import reactivefeign.client.ReactiveHttpResponse | ||
import reactor.core.publisher.Mono | ||
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internal suspend fun Mono<*>.awaitReactiveHttpResponse(): Any { | ||
val result = awaitSingle() | ||
if (result is ReactiveHttpResponse<*>) { | ||
val body = result.body() | ||
require(body is Mono<*>) { "Only Mono type is allowed for suspend method" } | ||
return body.awaitSingle() | ||
} | ||
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return result | ||
} |
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66 changes: 66 additions & 0 deletions
66
feign-reactor-core/src/test/java/reactivefeign/SuspendTest.kt
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package reactivefeign | ||
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import com.fasterxml.jackson.core.JsonProcessingException | ||
import kotlinx.coroutines.runBlocking | ||
import org.assertj.core.api.Assertions.assertThat | ||
import org.junit.AfterClass | ||
import org.junit.BeforeClass | ||
import org.junit.Test | ||
import reactivefeign.resttemplate.client.RestTemplateFakeReactiveFeign | ||
import reactivefeign.testcase.SuspendIceCreamServiceApi | ||
import reactivefeign.testcase.domain.OrderGenerator | ||
import reactor.core.publisher.Mono | ||
import reactor.netty.DisposableServer | ||
import reactor.netty.http.HttpProtocol | ||
import reactor.netty.http.server.HttpServer | ||
import reactor.netty.http.server.HttpServerRequest | ||
import reactor.netty.http.server.HttpServerResponse | ||
import reactor.netty.http.server.HttpServerRoutes | ||
import java.time.Duration | ||
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class SuspendTest { | ||
companion object { | ||
private lateinit var server: DisposableServer | ||
private const val DELAY_IN_MILLIS: Long = 500L | ||
private val cannedValue = OrderGenerator().generate(1) | ||
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@BeforeClass | ||
@JvmStatic | ||
@Throws(JsonProcessingException::class) | ||
fun startServer() { | ||
val data = TestUtils.MAPPER.writeValueAsString(cannedValue).toByteArray() | ||
server = HttpServer.create() | ||
.protocol(HttpProtocol.HTTP11, HttpProtocol.H2C) | ||
.route { routes: HttpServerRoutes -> | ||
routes[ | ||
"/icecream/orders/1", { req: HttpServerRequest?, res: HttpServerResponse -> | ||
res.header("Content-Type", "application/json") | ||
Mono.delay(Duration.ofMillis(DELAY_IN_MILLIS)) | ||
.thenEmpty(res.sendByteArray(Mono.just(data))) | ||
} | ||
] | ||
} | ||
.bindNow() | ||
} | ||
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@JvmStatic | ||
@AfterClass | ||
fun stopServer() { | ||
server.disposeNow() | ||
} | ||
} | ||
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@Test | ||
fun shouldRun(): Unit = runBlocking { | ||
val client = RestTemplateFakeReactiveFeign | ||
.builder<SuspendIceCreamServiceApi>() | ||
.target( | ||
SuspendIceCreamServiceApi::class.java, | ||
"http://localhost:" + server.port() | ||
) | ||
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val firstOrder = client.findOrder(orderId = 1) | ||
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assertThat(firstOrder).usingRecursiveComparison().isEqualTo(cannedValue) | ||
} | ||
} |
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10 changes: 10 additions & 0 deletions
10
feign-reactor-core/src/test/java/reactivefeign/testcase/SuspendIceCreamServiceApi.kt
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package reactivefeign.testcase | ||
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import feign.Param | ||
import feign.RequestLine | ||
import reactivefeign.testcase.domain.IceCreamOrder | ||
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interface SuspendIceCreamServiceApi { | ||
@RequestLine("GET /icecream/orders/{orderId}") | ||
suspend fun findOrder(@Param("orderId") orderId: Int): IceCreamOrder | ||
} |