/*
 * ============LICENSE_START=======================================================
 * dcaegen2-collectors-veshv
 * ================================================================================
 * Copyright (C) 2018-2019 NOKIA
 * ================================================================================
 * 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
 *
 *      http://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.
 * ============LICENSE_END=========================================================
 */


/**
 * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
 * @since June 2018
 */
package org.onap.dcae.collectors.veshv.utils.rx

import org.reactivestreams.Publisher
import reactor.core.publisher.Flux
import reactor.core.publisher.Mono
import reactor.core.publisher.toMono
import java.time.Duration

fun <T> Publisher<T>.then(callback: () -> Unit): Mono<Unit> =
        toMono().then(Mono.fromCallable(callback))

fun <T> Flux<T>.nextWithVariableInterval(intervalSupplier: () -> Duration): Flux<T> =
        concatMap { Mono.just(it).delayElement(intervalSupplier()) }