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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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feign-reactor-core/src/main/java/reactivefeign/KotlinExtensions.kt
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| @file:JvmName("KotlinExtensions") | ||
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| package reactivefeign | ||
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| import kotlinx.coroutines.reactor.awaitSingle | ||
| import reactivefeign.client.ReactiveHttpResponse | ||
| import reactor.core.publisher.Mono | ||
| 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 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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| internal fun Method.isSuspendMethod(): Boolean = | ||
| kotlinFunction?.isSuspend ?: false | ||
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| internal fun Method.getKotlinMethodReturnType(): Type? = | ||
| kotlinFunction?.returnType?.javaType |
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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
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 | ||
| } |