org.springframework.web.server.CoWebExceptionHandler.kt Maven / Gradle / Ivy
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/*
* Copyright 2002-2024 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.web.server
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.reactor.mono
import reactor.core.publisher.Mono
import kotlin.coroutines.CoroutineContext
/**
* Kotlin-specific implementation of the [WebExceptionHandler] interface that allows for
* using coroutines, including [kotlin.coroutines.CoroutineContext] propagation.
*
* @author Sangyoon Jeong
* @since 6.2
*/
abstract class CoWebExceptionHandler : WebExceptionHandler {
final override fun handle(exchange: ServerWebExchange, ex: Throwable): Mono {
val context = exchange.attributes[CoWebFilter.COROUTINE_CONTEXT_ATTRIBUTE] as CoroutineContext?
return mono(context ?: Dispatchers.Unconfined) { coHandle(exchange, ex) }.then()
}
protected abstract suspend fun coHandle(exchange: ServerWebExchange, ex: Throwable)
}